Photometric redshifts for supernovae Ia in the Supernova Legacy Survey (2009)
Palanque-Delabrouille, N., Ruhlmann-Kleider, V., Pascal, S., Rich, J., Guy, J., Bazin, G., ...
We present a method using the SALT2 light curve fitter to determine the redshift of Type Ia supernovae in the Supernova Legacy Survey (SNLS) based on their photometry in g', r', i' and z'. On 289...
Mysterious transients unmasked as the bright blue death throes of massive stars (2009)
Quimby, R. M., Kulkarni, S. R., Kasliwal, M. M., Gal-Yam, A., Arcavi, I., Sullivan, M., ...
Movies of the heavens, produced by modern synoptic imaging surveys, are revolutionizing the field of cosmic explosions in astronomy. Recent discoveries suggest entirely new pathways for the deaths of...
The ESO/VLT 3rd year Type Ia supernova data set from the Supernova Legacy Survey (2009)
Balland, C., Baumont, S., Basa, S., Mouchet, M., Howell, D. A., Astier, P., ...
We present 139 spectra of 124 Type Ia supernovae (SNeIa) that were observed at the ESO/VLT during the first three years of the Canada-France-Hawai Telescope (CFHT) Supernova Legacy Survey (SNLS)....
Photometric Calibration of the Supernova Legacy Survey Fields (2009)
Regnault, N., Conley, A., Guy, J., Sullivan, M., Astier, P., ...
We present the photometric calibration of the Supernova Legacy Survey (SNLS) fields. The SNLS aims at measuring the distances to SNe Ia at (0.3
The Palomar Transient Factory: System Overview, Performance and First Results (2009)
Law, N. M., Kulkarni, S. R., Dekany, R. G., Ofek, E. O., Quimby, R. M., Nugent, P. E., ...
The Palomar Transient Factory (PTF) is a fully-automated, wide-field survey aimed at a systematic exploration of the optical transient sky. The transient survey is performed using a new 8.1 square...
Constraining dust and color variations of high-z SNe using NICMOS on Hubble Space Telescope (2009)
Nobili, S., Fadeyev, V., Aldering, G., Amanullah, R., Barbary, K., Burns, M. S., ...
We present data from the Supernova Cosmology Project for five high redshift Type Ia supernovae (SNe Ia) that were obtained using the NICMOS infrared camera on the Hubble Space Telescope. We add two...
The Core-collapse rate from the Supernova Legacy Survey (2009)
Bazin, G., Palanque-Delabrouille, N., Rich, J., Ruhlmann-Kleider, V., Aubourg, E., Guillou, L. Le, ...
We use three years of data from the Supernova Legacy Survey (SNLS) to study the general properties of core-collapse and type Ia supernovae. This is the first such study using the "rolling search"...
The mean type Ia Supernova spectrum over the past nine gigayears (2009)
Sullivan, M., Ellis, R. S., Howell, D. A., Riess, A., Nugent, P. E., Gal-Yam, A.
We examine the possibility of evolution with redshift in the mean rest-frame ultraviolet (UV; λ ≾ 4500 Å) spectrum of Type Ia Supernovae (SNe Ia) sampling the redshift range 0 < z < 1.3. We find...
Type Ia supernova science 2010-2020 (2009)
Howell, D. A., Conley, A., Della Valle, M., Nugent, P. E., Perlmutter, S., Marion, G. H., ...
In the next decade Type Ia supernovae (SNe Ia) will be used to test theories predicting changes in the Dark Energy equation of state with time. Ultimately this requires a dedicated space mission like...
The Mean Type Ia Supernova Spectrum Over the Past 9 Gigayears (2009)
Sullivan, M., Ellis, R. S., Howell, D. A., Riess, A., Nugent, P. E., Gal-Yam, A.
We examine the possibility of evolution with redshift in the mean rest-frame ultraviolet (UV;
Howell, D. A., Sullivan, M., Brown, E. F., Conley, A., Borgne, D. Le, Hsiao, E. Y., ...
Timmes, Brown & Truran found that metallicity variations could theoretically account for a 25% variation in the mass of 56Ni synthesized in Type Ia supernovae (SNe Ia), and thus account for a large...
PHotometry Assisted Spectral Extraction (PHASE) and identification of SNLS supernovae (2008)
Baumont, S., Balland, C., Astier, P., Guy, J., Hardin, D., Howell, D. A., ...
Aim: We present new extraction and identification techniques for supernova (SN) spectra developed within the Supernova Legacy Survey (SNLS) collaboration. Method: The new spectral extraction method...
Ellis, R.S., Sullivan, M., Nugent, P.E., Howell, D.A., Gal-Yam, A., Astier, P., ...
We analyze the mean rest-frame ultraviolet (UV) spectrum of Type Ia Supernovae(SNe) and its dispersion using high signal-to-noise Keck-I/LRIS-B spectroscopyfor a sample of 36 events at intermediate...
Clustering of supernova Ia host galaxies (2008)
Carlberg, R. G., Sullivan, M., Borgne, D. Le, Conley, A., Howell, D. A., Perrett, K., ...
For the first time the cross-correlation between type Ia supernova host galaxies and surrounding field galaxies is measured using the Supernova Legacy Survey sample. Over the z=0.2 to 0.9 redshift...
Type Ia supernovae rates and galaxy clustering from the CFHT supernova legacy survey (2008)
Graham, M. L., Pritchet, C. J., Sullivan, M., Gwyn, S. D. J., Neill, J. D., Hsiao, E. Y., ...
The Canada-France-Hawaii Telescope Supernova Legacy Survey (CFHT SNLS) has created a large homogeneous database of intermediate redshift (0.2 < z < 1.0) type Ia supernovae (SNe Ia). The SNLS team has...
SiFTO: An Empirical Method for Fitting SNe Ia Light Curves (2008)
Conley, A., Sullivan, M., Hsiao, E. Y., Guy, J., Astier, P., Balam, D., ...
We present SiFTO, a new empirical method for modeling type Ia supernovae (SNe Ia) light curves by manipulating a spectral template. We make use of high-redshift SN observations when training the...
Ellis, R. S., Sullivan, M., Nugent, P. E., Howell, D. A., Gal-Yam, A., Astier, P., ...
We analyze the mean rest-frame ultraviolet (UV) spectrum of Type Ia Supernovae (SNe) and its dispersion using high signal-to-noise ratio Keck-I/LRIS-B spectroscopy for a sample of 36 events at...
A. Conley, G. Goldhaber, L. Wang, G. Aldering, R. Amanullah, E. D. Commins, ...
We present measurements of Ωm and ΩΛ from a blind analysis of 21 high redshift supernovae using a new technique (CMAGIC) for fitting the multicolor lightcurves of Type Ia supernovae, first...
Type Ia Supernovae Rates and Galaxy Clustering from the CFHT Supernova Legacy Survey (2008)
Graham, M. L., Pritchet, C. J., Sullivan, M., Gwyn, S. D. J., Neill, J. D., Hsiao, E. Y., ...
The Canada-France-Hawaii Telescope Supernova Legacy Survey (SNLS) has created a large homogeneous database of intermediate redshift (0.2 < z < 1.0) type Ia supernovae (SNe Ia). The SNLS team has...
Measuring Radial Velocities Of Orion Association Members Using The Uk Schmidt Flair. (2007)
Introduction OB Associations are snapshots of the star formation process in the galactic plane, and they are our primary laboratories for studying this process. They provide direct constraints on...
Ellis, R. S., Sullivan, M., Nugent, P. E., Howell, D. A., Gal-Yam, A., Astier, P., ...
We analyze the mean rest-frame ultraviolet (UV) spectrum of Type Ia Supernovae (SNe Ia) and its dispersion using high signal-to-noise Keck-I/LRIS-B spectroscopy for a sample of 36 events at...
SNLS Spectroscopy: Testing for Evolution in Type Ia Supernovae (2007)
Bronder, T. J., Hook, I. M., Astier, P., Balam, D., Balland, C., Basa, S., ...
Aims: We present a quantitative study of a new data set of high redshift Type Ia supernovae spectra, observed at the Gemini telescopes during the first 34 months of the Supernova Legacy Survey....
Guy, J., Astier, P., Baumont, S., Hardin, D., Pain, R., Regnault, N., ...
We present an empirical model of Type Ia supernovae spectro-photometric evolution with time. The model is built using a large data set including light-curves and spectra of both nearby and distant...
Guy, J., Astier, P., Baumont, S., Hardin, D., Pain, R., Regnault, N., ...
We present an empirical model of Type Ia supernovae spectro-photometric evolution with time. The model is built using a large data set including light-curves and spectra of both nearby and distant...
Guy, J., Astier, P., Baumont, S., Hardin, D., Pain, R., Regnault, N., ...
We present an empirical model of Type Ia supernovae spectro-photometric evolution with time. The model is built using a large data set including light-curves and spectra of both nearby and distant...
Astier, P., Guy, J., Regnault, N., Pain, R., Aubourg, E., Balam, D., ...
We present distance measurements to 71 high redshift type Ia supernovae discovered during the first year of the 5-year Supernova Legacy Survey (SNLS). These events were detected and their multi-color...
Astier, P., Guy, J., Regnault, N., Pain, R., Aubourg, E., Balam, D., ...
We present distance measurements to 71 high redshift type Ia supernovae discovered during the first year of the 5-year Supernova Legacy Survey (SNLS). These events were detected and their multi-color...
Astier, P., Guy, J., Regnault, N., Pain, R., Aubourg, E., Balam, D., ...
We present distance measurements to 71 high redshift type Ia supernovae discovered during the first year of the 5-year Supernova Legacy Survey (SNLS). These events were detected and their multi-color...
Conley, A., Carlberg, R. G., Guy, J., Howell, D. A., Jha, S., Riess, A. G., ...
We examine recent evidence from the luminosity-redshift relation of Type Ia Supernovae for the $\sim 3 \sigma$ detection of a ``Hubble bubble'' -- a departure of the local value of the Hubble...
Conley, A., Carlberg, R. G., Guy, J., Howell, D. A., Jha, S., Riess, A. G., ...
We examine recent evidence from the luminosity-redshift relation of Type Ia Supernovae (SNe Ia) for the $\sim 3 \sigma$ detection of a ``Hubble bubble'' -- a departure of the local value of the...
Garavini, G., Folatelli, G., Nobili, S., Aldering, G., Amanullah, R., Antilogus, P., ...
We develop a method to measure the strength of the absorption features in Type Ia supernova (SN Ia) spectra and use it to make a quantitative comparison between the spectra of Type Ia supernovae at...
Garavini, G., Folatelli, G., Nobili, S., Aldering, G., Amanullah, R., Antilogus, P., ...
We develop a method to measure the strength of the absorption features in Type Ia supernova (SN Ia) spectra and use it to make a quantitative comparison between the spectra of Type Ia supernovae at...
K-corrections and spectral templates of Type Ia supernovae (2007)
Hsiao, E. Y., Conley, A., Howell, D. A., Sullivan, M., Pritchet, C. J., Carlberg, R. G., ...
With the advent of large dedicated Type Ia supernova (SN Ia) surveys, K-corrections of SNe Ia and their uncertainties have become especially important in the determination of cosmological parameters....
Conley, A., Goldhaber, G., Wang, L., Aldering, G., Amanullah, R., Commins, E. D., ...
We present measurements of \Omega_m and \Omega_{\Lambda} from a blind analysis of 21 high-redshift supernovae using a new technique (CMAGIC) for fitting the multi-color lightcurves of Type Ia...
Towards a Cosmological Hubble Diagram for Type II-P Supernovae (2007)
Nugent, P., Sullivan, M., Ellis, R., Gal-Yam, A., Leonard, D.C., Howell, D.A., ...
We present the first high-redshift Hubble diagram for Type II-P supernovae (SNe II-P) based upon five events at redshift up to z~0.3. This diagram was constructed using photometry from the...
Knop, R. A., Aldering, G., Amanullah, R., Astier, P., Blanc, G., Burns, M. S., ...
We report measurements of $\Omega_M$, $\Omega_\Lambda$, and w from eleven supernovae at z=0.36-0.86 with high-quality lightcurves measured using WFPC-2 on the HST. This is an independent set of...
The distant Type Ia supernova rate (2007)
Pain, R., Fabbro, S., Sullivan, M., Ellis, R. S., Aldering, G., Astier, P., ...
We present a measurement of the rate of distant Type Ia supernovae derived using 4 large subsets of data from the Supernova Cosmology Project. Within this fiducial sample, which surveyed about 12...
The Hubble Diagram of Type Ia Supernovae as a Function of Host Galaxy Morphology (2007)
Sullivan, M., Ellis, R. S., Aldering, G., Amanullah, R., Astier, P., Blanc, G., ...
(Abridged) We present new results on the Hubble diagram of distant type Ia supernovae (SNe Ia) segregated according to the type of host galaxy. This makes it possible to check earlier evidence for a...
The Supernova Type Ia Rate Evolution with SNLS (2007)
Neill, J. D., Sullivan, M., Balam, D., Pritchet, C. J., Howell, D. A., Perrett, K., ...
We present a progress report on a project to derive the evolution of the volumetric supernova Type Ia rate from the Supernova Legacy Survey. Our preliminary estimate of the rate evolution divides the...
The Rise Time of Type Ia Supernovae from the Supernova Legacy Survey (2007)
Conley, A., Howell, D. A., Howes, A., Sullivan, M., Astier, P., Balam, D., ...
We compare the rise times of nearby and distant Type Ia supernovae (SNe Ia) as a test for evolution using 73 high-redshift spectroscopically-confirmed SNe Ia from the first two years of the five year...
Guy, J., Astier, P., Baumont, S., Hardin, D., Pain, R., Regnault, N., ...
We present an empirical model of Type Ia supernovae spectro-photometric evolution with time. The model is built using a large data set including light-curves and spectra of both nearby and distant...
The Supernova Type Ia Rate Evolution with SNLS (2007)
Neill, J. D., Sullivan, M., Balam, D., Pritchet, C. J., Howell, D. A., Perrett, K., ...
We present a progress report on a project to derive the evolution of the volumetric supernova Type Ia rate from the Supernova Legacy Survey. Our preliminary estimate of the rate evolution divides the...
Howell, D.A., Smith, A.G., Roman, E.
To gain survival advantages potentially associated with prompt diagnosis, the UK government introduced identical waiting-time targets for all cancers, and guidelines to ensure that general...
Restframe I-band Hubble diagram for type Ia supernovae up to redshift z $\sim$ 0.5 (2006)
Nobili, S., Amanullah, R., Garavini, G., Goobar, A., Lidman, C., Stanishev, V., ...
We present a novel technique for fitting restframe I-band light curves on a data set of 42 Type Ia supernovae (SNe Ia). Using the result of the fit, we construct a Hubble diagram with 26 SNe from the...
Restframe I-band Hubble diagram for type Ia supernovae up to redshift z $\sim$ 0.5 (2006)
Nobili, S., Amanullah, R., Garavini, G., Goobar, A., Lidman, C., Stanishev, V., ...
We present a novel technique for fitting restframe I-band light curves on a data set of 42 Type Ia supernovae (SNe Ia). Using the result of the fit, we construct a Hubble diagram with 26 SNe from the...
Restframe I-band Hubble diagram for type Ia supernovae up to redshift z $\sim$ 0.5 (2006)
Nobili, S., Amanullah, R., Garavini, G., Goobar, A., Lidman, C., Stanishev, V., ...
We present a novel technique for fitting restframe I-band light curves on a data set of 42 Type Ia supernovae (SNe Ia). Using the result of the fit, we construct a Hubble diagram with 26 SNe from the...
The type Ia supernova SNLS-03D3bb from a super-Chandrasekhar-mass white dwarf star (2006)
Howell, D.A., Sullivan, M., Nugent, P.E., Ellis, R.S., Conley, A.J., Le Borgne, D., ...
The acceleration of the expansion of the universe, and the need for Dark Energy, were inferred from the observations of Type Ia supernovae (SNe Ia). There is consensus that SNe Ia are thermonuclear...
Sullivan, M., Borgne, D. Le, Pritchet, C. J., Hodsman, A., Neill, J. D., Howell, D. A, ...
(ABRIDGED) We show that Type Ia supernovae (SNe Ia) are formed within both very young and old stellar populations, with observed rates that depend on the stellar mass and mean star-formation rates...
The Type Ia Supernova Rate at z ~0.5 from the Supernova Legacy Survey (2006)
Neill, J. D., Sullivan, M., Balam, D., Pritchet, C. J., Howell, D. A., Perrett, K., ...
We present a measurement of the distant Type Ia supernova rate derived from the first two years of the Canada -- France -- Hawaii Telescope Supernova Legacy Survey. We observed four one-square degree...
Sullivan, M., Le Borgne, D., Pritchet, C. J., Hodsman, A., Neill, J. D., Howell, D. A., ...
We show that Type Ia supernovae (SNe Ia) are formed within both very young and old stellar populations, with observed rates that depend on the stellar mass and mean star formation rates (SFRs) of...
The Type Ia Supernova Rate at z ~0.5 from the Supernova Legacy Survey (2006)
Neill, J. D., Sullivan, M., Balam, D., Pritchet, C. J., Howell, D. A., Perrett, K., ...
We present a measurement of the distant Type Ia supernova rate derived from the first two years of the Canada -- France -- Hawaii Telescope Supernova Legacy Survey. We observed four one-square degree...
The Rise Time of Type Ia Supernovae from the Supernova Legacy Survey (2006)
Conley, A., Howell, D. A., Howes, A., Sullivan, M., Astier, P., Balam, D., ...
We compare the rise times of nearby and distant Type Ia supernovae (SNe Ia) as a test for evolution using 73 high-redshift spectroscopically-confirmed SNe Ia from the first two years of the five year...
Sullivan, M., Borgne, D. Le, Pritchet, C. J., Hodsman, A., Neill, J. D., Howell, D. A, ...
(ABRIDGED) We show that Type Ia supernovae (SNe Ia) are formed within both very young and old stellar populations, with observed rates that depend on the stellar mass and mean star-formation rates...
The Type Ia Supernova Rate at z ~0.5 from the Supernova Legacy Survey (2006)
Neill, J. D., Sullivan, M., Balam, D., Pritchet, C. J., Howell, D. A., Perrett, K., ...
We present a measurement of the distant Type Ia supernova rate derived from the first two years of the Canada -- France -- Hawaii Telescope Supernova Legacy Survey. We observed four one-square degree...
Photometric selection of high-redshift type Ia supernovae (2006)
Sullivan, M., Howell, D.A., Perrett, K., Nugent, P., Astier, P., Aubourg, E., ...
We present a method for selecting high-redshift type Ia supernovae (SNe Ia) located via rolling SN searches. The technique, using both color and magnitude information of events from only 2-3 epochs...
Spectroscopic Observations and Analysis of the Unusual Type Ia SN 1999ac (2006)
Garavini, G., Aldering, G., Amadon, A., Amanullah, R., Astier, P., Balland, C., ...
We present optical spectra of the peculiar Type Ia supernova (SN Ia) 1999ac. The data extend from -15 to +42 days with respect to B-band maximum and reveal an event that is unusual in several...
Conley, A., Goldhaber, G., Wang, L., Aldering, G., Amanullah, R., Commins, E. D., ...
We present measurements of \Omega_m and \Omega_{\Lambda} from a blind analysis of 21 high-redshift supernovae using a new technique (CMAGIC) for fitting the multi-color lightcurves of Type Ia...
Hook, I. M., Howell, D. A., Aldering, G., Amanullah, R., Burns, M. S., Conley, A., ...
We present spectra for 14 high-redshift (0.17 < z < 0.83) supernovae, which were discovered by the Supernova Cosmology Project as part of a campaign to measure cosmological parameters. The spectra...
Lymphoma: variations in time to diagnosis and treatment (2006)
HOWELL, D.A., SMITH, A.G., ROMAN, E.
This study examines illness trajectories of patients with lymphoma and assesses whether UK government targets to reduce waiting time for diagnosis and treatment are achievable and appropriate. One...
Photometric selection of high-redshift type Ia supernovae (2006)
Sullivan, M., Howell, D.A., Perrett, K., Nugent, P., Astier, P., Aubourg, E., ...
We present a method for selecting high-redshift type Ia supernovae (SNe Ia) located via rolling SN searches. The technique, using both color and magnitude information of events from only 2-3 epochs...
Astier, P., Guy, J., Regnault, N., Pain, R., Aubourg, E., Balam, D., ...
We present distance measurements to 71 high redshift type Ia supernovae discovered during the first year of the 5-year Supernova Legacy Survey (SNLS). These events were detected and their multi-color...
Photometric selection of high-redshift type Ia supernovae (2006)
Sullivan, M., Howell, D.A., Perrett, K., Nugent, P., Astier, P., Aubourg, E., ...
We present a method for selecting high-redshift type Ia supernovae (SNe Ia) located via rolling SN searches. The technique, using both color and magnitude information of events from only 2-3 epochs...
Astier, P., Guy, J., Regnault, N., Pain, R., Aubourg, E., Balam, D., ...
We present distance measurements to 71 high redshift type Ia supernovae discovered during the first year of the 5-year Supernova Legacy Survey (SNLS). These events were detected and their multi-color...
The Type Ia Supernova Rate at z ~0.5 from the Supernova Legacy Survey (2006)
Neill, J. D., Sullivan, M., Balam, D., Pritchet, C. J., Howell, D. A., Perrett, K., ...
We present a measurement of the distant Type Ia supernova rate derived from the first two years of the Canada -- France -- Hawaii Telescope Supernova Legacy Survey. We observed four one-square degree...
Sullivan, M., Borgne, D. Le, Pritchet, C. J., Hodsman, A., Neill, J. D., Howell, D. A, ...
(ABRIDGED) We show that Type Ia supernovae (SNe Ia) are formed within both very young and old stellar populations, with observed rates that depend on the stellar mass and mean star-formation rates...
The type Ia supernova SNLS-03D3bb from a super-Chandrasekhar-mass white dwarf star (2006)
Howell, D.A., Sullivan, M., Nugent, P.E., Ellis, R.S., Conley, A.J., Le Borgne, D., ...
The acceleration of the expansion of the universe, and the need for Dark Energy, were inferred from the observations of Type Ia supernovae (SNe Ia). There is consensus that SNe Ia are thermonuclear...
The Supernova Legacy Survey: measurement of ΩM, ΩΛ and w from the first year data set (2006)
Astier, P., Guy, J., Regnault, N., Pain, R., Aubourg, E., Balam, D., ...
Photometric selection of high-redshift type Ia supernovae (2005)
Sullivan, M., Howell, D. A., Perrett, K., Nugent, P., Astier, P., Aubourg, E., ...
We present a method for selecting high-redshift type Ia supernovae (SNe Ia) located via rolling SN searches. The technique, using both color and magnitude information of events from only 2-3 epochs...
Astier, P., Guy, J., Regnault, N., Pain, R., Aubourg, E., Balam, D., ...
We present distance measurements to 71 high redshift type Ia supernovae discovered during the first year of the 5-year Supernova Legacy Survey (SNLS). These events were detected and their multi-color...
Howell, D. A., Sullivan, M., Perrett, K., Bronder, T. J., Hook, I. M., Astier, P., ...
We present new techiques for improving the efficiency of supernova (SN) classification at high redshift using 64 candidates observed at Gemini North and South during the first year of the Supernova...
Hook, I. M., Howell, D. A., Aldering, G., Amanullah, R., Burns, M. S., Conley, A., ...
We present spectra for 14 high-redshift (0.17 < z < 0.83) supernovae, which were discovered by the Supernova Cosmology Project as part of a campaign to measure cosmological parameters. The spectra...
Spectroscopic Observations and Analysis of the Unusual Type Ia SN 1999ac (2005)
Garavini, G., Aldering, G., Amadon, A., Amanullah, R., Astier, P., Balland, C., ...
Spectroscopic Observations and Analysis of the Unusual Type Ia SN 1999ac (2005)
Aldering, G., Amadon, A., Amanullah, R., Astier, P., Balland, C., ...
We present optical spectra of the peculiar Type Ia supernova (SN Ia) 1999ac. The data extend from -15 to +42 days with respect to B-band maximum and reveal an event that is unusual in several...
Restframe I-band Hubble diagram for type Ia supernovae up to redshift z ~0.5 (2005)
Amanullah, R., Garavini, G., Goobar, A., Lidman, C., Stanishev, V., ...
We present a novel technique for fitting restframe I-band light curves on a data set of 42 Type Ia supernovae (SNe Ia). Using the result of the fit, we construct a Hubble diagram with 26 SNe from the...
Restframe I-band Hubble diagram for type Ia supernovae up to redshift z ~; 0.5 (2005)
Nobili, S., Amanullah, R., Garavini, G., Goobar, A., Lidman, C., Stanishev, V., ...
We present a novel technique for fitting restframe I-band light curves on a data set of 42 type Ia supernovae (SNe Ia). Using the result of the fit, we construct a Hubble diagram with 26 SNe from the...
An HST Search for Supernovae Accompanying X-ray Flashes (2005)
Soderberg, A. M., Kulkarni, S. R., Fox, D. B., Berger, E., Price, P. A., Cenko, S. B., ...
We present the results from an Hubble Space Telescope/ACS search for supernovae associated with X-ray flashes 020903, 040701, 040812 and 040916. We find strong evidence that XRF 020903 (z=0.25) was...
Hook, I. M., Howell, D. A., Aldering, G., Amanullah, R., Burns, M. S., Conley, A., ...
We present spectra for 14 high-redshift (0.17 < z < 0.83) supernovae, which were discovered by the Supernova Cosmology Project as part of a campaign to measure cosmological parameters. The spectra...
Spectroscopic Observations and Analysis of the Unusual Type Ia SN 1999ac (2005)
Garavini, G., Aldering, G., Amadon, A., Amanullah, R., Astier, P., Balland, C., ...
We present optical spectra of the peculiar Type Ia supernova (SN Ia) 1999ac. The data extend from -15 to +42 days with respect to B-band maximum and reveal an event that is unusual in several...
Restframe I-band Hubble diagram for type Ia supernovae up to redshift z $\sim$ 0.5 (2005)
Nobili, S., Amanullah, R., Garavini, G., Goobar, A., Lidman, C., Stanishev, V., ...
We present a novel technique for fitting restframe I-band light curves on a data set of 42 Type Ia supernovae (SNe Ia). Using the result of the fit, we construct a Hubble diagram with 26 SNe from the...
Hook, I. M., Howell, D. A., Aldering, G., Amanullah, R., Burns, M. S., Conley, A., ...
We present spectra for 14 high-redshift (0.17 < z < 0.83) supernovae, which were discovered by the Supernova Cosmology Project as part of a campaign to measure cosmological parameters. The spectra...
Spectroscopic Observations and Analysis of the Unusual Type Ia SN 1999ac (2005)
Garavini, G., Aldering, G., Amadon, A., Amanullah, R., Astier, P., Balland, C., ...
We present optical spectra of the peculiar Type Ia supernova (SN Ia) 1999ac. The data extend from -15 to +42 days with respect to B-band maximum and reveal an event that is unusual in several...
Restframe I-band Hubble diagram for type Ia supernovae up to redshift z $\sim$ 0.5 (2005)
Nobili, S., Amanullah, R., Garavini, G., Goobar, A., Lidman, C., Stanishev, V., ...
We present a novel technique for fitting restframe I-band light curves on a data set of 42 Type Ia supernovae (SNe Ia). Using the result of the fit, we construct a Hubble diagram with 26 SNe from the...
Spectroscopic observations and analysis of the unusual type Ia SN 1999ac (2005)
Garavini, G., Aldering, G., Amadon, A., Amanullah, R., Astier, P., Balland, C., ...
We present optical spectra of the peculiar Type Ia supernova (SN Ia) 1999ac. The data extend from -15 to +42 days with respect to B-band maximum and reveal an event that is unusual in several...
Spectroscopic confirmation of high-redshift supernovae with the ESO VLT (2004)
Lidman, C., Howell, D. A., Folatelli, G., Garavini, G., Nobili, S., Aldering, G., ...
We present VLT FORS1 and FORS2 spectra of 39 candidate high-redshift supernovae that were discovered as part of a cosmological study using Type Ia supernovae (SNe Ia) over a wide range of redshifts....
Spectroscopic Observations and Analysis of the Peculiar SN 1999aa (2004)
Garavini, G., Folatelli, G., Goobar, A., Nobili, S., Aldering, G., Amadon, A., ...
We present an extensive new time-series of spectroscopic data of the peculiar SN 1999aa in NGC 2595. Our data set includes 25 optical spectra between -11 and +58 days with respect to B-band maximum...
C. Lidman, D. A. Howell, G. Folatelli, G. Garavini, S. Nobili, G. Aldering, ...
c ○ ESO 2005 Spectroscopic confirmation of high-redshift supernovae with the ESO VLT ⋆,⋆⋆
Spectroscopic observations and analysis of the peculiar SN 1999aa (2003)
Garavini, G., Folatelli, G., Goobar, A., Nobili, S., Aldering, G., Amadon, A., ...
We present an extensive new time series of spectroscopic data of the peculiar SN 1999aa in NGC 2595. Our data set includes 25 optical spectra between -11 and +58 days with respect to B-band maximum...
Knop, R. A., Aldering, G., Amanullah, R., Astier, P., Blanc, G., Burns, M. S., ...
We report measurements of $\Omega_M$, $\Omega_\Lambda$, and w from eleven supernovae at z=0.36-0.86 with high-quality lightcurves measured using WFPC-2 on the HST. This is an independent set of...
Kasen, Daniel, Nugent, Peter, Wang, Lifan, Howell, D. A., Wheeler, J. Craig, Hoeflich, Peter, ...
SN 2001el is the first normal Type Ia supernova to show a strong, intrinsic polarization signal. In addition, during the epochs prior to maximum light, the CaII IR triplet absorption is seen...
The Hubble Diagram of Type Ia Supernovae as a Function of Host Galaxy Morphology (2002)
Sullivan, M., Ellis, R. S., Aldering, G., Amanullah, R., Astier, P., Blanc, G., ...
(Abridged) We present new results on the Hubble diagram of distant type Ia supernovae (SNe Ia) segregated according to the type of host galaxy. This makes it possible to check earlier evidence for a...
The distant Type Ia supernova rate (2002)
Pain, R., Fabbro, S., Sullivan, M., Ellis, R. S., Aldering, G., Astier, P., ...
We present a measurement of the rate of distant Type Ia supernovae derived using 4 large subsets of data from the Supernova Cosmology Project. Within this fiducial sample, which surveyed about 12...
Overview of the Nearby supernova factory (2002)
Aldering, G., Adam, G., Antilogus, P., Astier, P., Bacon, Roland, Bongard-Canet, S., ...
Overview of the Nearby supernova factory (2002)
Aldering, G., Adam, G., Antilogus, P., Astier, P., Bacon, Roland, Bongard-Canet, S., ...
Overview of the Nearby supernova factory (2002)
Aldering, G., Adam, G., Antilogus, P., Astier, P., Bacon, Roland, Bongard, S., ...
Overview of the Nearby supernova factory (2002)
Aldering, G., Adam, G., Antilogus, P., Astier, P., Bacon, Roland, Bongard, S., ...
Overview of the Nearby supernova factory (2002)
Aldering, G., Adam, G., Antilogus, P., Astier, P., Bacon, Roland, Bongard, S., ...
R. Pain, S. Fabbro, M. Sullivan, R. S. Ellis, G. Aldering, P. Astier, ...
We present a measurement of the rate of distant Type Ia supernovae derived using 4 large subsets of data from the Supernova Cosmology Project. Within this fiducial sample, which surveyed about 12...
Endoscopic sphincterotomy for stones by experts is safe, even in younger patients with normal ducts.
Cotton, P B, Geenen, J E, Sherman, S, Cunningham, J T, Howell, D A, Carr-Locke, D L, ...
OBJECTIVE: To provide current information on the risks of endoscopic sphincterotomy for stone. SUMMARY BACKGROUND DATA: In recent years (since the popularity of laparoscopic cholecystectomy),...
Endoscopic sphincterotomy for stones by experts is safe, even in younger patients with normal ducts.
Cotton, P B, Geenen, J E, Sherman, S, Cunningham, J T, Howell, D A, Carr-Locke, D L, ...
OBJECTIVE: To provide current information on the risks of endoscopic sphincterotomy for stone. SUMMARY BACKGROUND DATA: In recent years (since the popularity of laparoscopic cholecystectomy),...
Observations on Strokes and Cerebral Edema with Intracranial Tumours
Howell, D. A., Embree, G., Tatlow, W. F. Tissington
Four patients who suffered strokes were found at autopsy to have intracranial tumours remote from the region responsible for the stroke, but the relevant cerebral white matter was swollen, pale...
Observations on Anticoagulant Therapy in Thromboembolic Disease of the Brain
Howell, D. A., Tatlow, W. F. Tissington, Feldman, S.
According to a recently reported study, anticoagulant therapy appears to be ineffective in thrombotic cerebrovascular disease when viewed from the standpoint of mortality, although it does control...
Olfactory mucosa in herpes simplex encephalitis.
Twomey, J A, Barker, C M, Robinson, G, Howell, D A
The olfactory mucosa was examined in three patients dying from herpes simplex encephalitis. It showed changes attributed to infection by the herpes simplex virus. It is suggested that in some...
Relapsing corticosteroid-dependent polyneuritis
Matthews, W. B., Howell, D. A., Hughes, R. C.
Three patients are described with chronic polyneuritis of unknown cause in whom a state of corticosteroid dependence developed. A fatal relapse occurred in one patient. No clinical,...
Spinal internuncial neurones in progressive encephalomyelitis with rigidity.
Howell, D A, Lees, A J, Toghill, P J
The clinical and pathological features of a fourth patient with progressive encephalomyelitis with rigidity are reported and compared with those previously described. It is suggested that the...