Characteristic velocities of stripped-envelope core-collapse supernova cores (2009)
Maurer, I., Mazzali, P. A., Deng, J., Filippenko, A. V., Hamuy, M., Kirshner, R. P., ...
The velocity of the inner ejecta of stripped-envelope core-collapse supernovae (CC-SNe) is studied by means of an analysis of their nebular spectra. Stripped-envelope CC-SNe are the result of the...
Cenko, S. B., Butler, N. R., Ofek, E. O., Perley, D. A., Morgan, A. N., Frail, D. A., ...
We present broadband (gamma-ray, X-ray, near-infrared, optical, and radio) observations of the gamma-ray burst (GRB) 090709A and its afterglow in an effort to ascertain the origin of this high-energy...
Lampeitl, H., Nichol, R. C., Giannantonio, T., Shapiro, C., Bassett, B., ...
We present an analysis of the luminosity distances of Type Ia Supernovae from the Sloan Digital Sky Survey-II (SDSS-II) Supernova Survey in conjunction with other intermediate redshift (z97% level...
On the Progenitor of the Type II-Plateau SN 2008cn in NGC 4603 (2009)
Elias-Rosa, N., Van Dyk, S. D., Li, W., Morrell, N., Gonzalez, S., Hamuy, M., ...
Through comparison of pre- and post-explosion images obtained with the Wide Field and Planetary Camera 2 onboard the Hubble Space Telescope, we have isolated a supergiant star prior to explosion at...
Optical Observations of the Rapidly Expanding Type Ia Supernova 2007gi (2009)
Zhang, T., Wang, X., Li, W., Filippenko, A. V., Wang, L., Zhou, X., ...
We present optical photometry and spectra for the Type Ia supernova (SN Ia) 2007gi in the nearby galaxy NGC 4036. SN 2007gi is characterized by extremely high-velocity (HV) features of the...
Dust and the Type II-Plateau Supernova 2004et (2009)
Kotak, R., Meikle, W. P. S., Farrah, D., Gerardy, C. L., Foley, R. J., Van Dyk, S. D., ...
We present mid-infrared (MIR) observations of the Type II-plateau supernova (SN) 2004et, obtained with the Spitzer Space Telescope between 64 and 1406 days past explosion. Late-time optical spectra...
Sollerman, J., Mörtsell, E., Davis, T. M., Blomqvist, M., Bassett, B., Becker, A. C., ...
We use the new SNe Ia discovered by the SDSS-II Supernova Survey together with additional supernova datasets as well as observations of the cosmic microwave background and baryon acoustic...
The normal Type Ia SN 2003hv out to very late phases (2009)
Leloudas, G., Stritzinger, M. D., Sollerman, J., Burns, C. R., Kozma, C., Krisciunas, K., ...
An extensive dataset for SN 2003hv that covers the flux evolution from maximum light to day +786 is presented. The data are combined with published nebular-phase infrared spectra, and the...
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...
New Observations of the Very Luminous Supernova 2006gy: Evidence for Echoes (2009)
Miller, A. A., Smith, N., Li, W., Bloom, J. S., Chornock, R., Filippenko, A. V., ...
Supernova (SN) 2006gy was a hydrogen-rich core-collapse SN that remains one of the most luminous optical supernovae ever observed. The total energy budget (> 2 x 10^51 erg radiated in the optical...
A new type of stellar explosion (2009)
Perets, H. B., Gal-Yam, A., Mazzali, P., Arnett, D., Kagan, D., Filippenko, A. V., ...
The explosive deaths of stars (supernovae; SNe) are generally explained by two physical processes. Young massive stars (more than eight solar masses, M_Sun) undergo gravitational core-collapse and...
Improved Distances to Type Ia Supernovae with Two Spectroscopic Subclasses (2009)
Wang, Xiaofeng, Filippenko, A. V., Ganeshalingam, M., Li, W., Silverman, J. M., Wang, L., ...
We study the observables of 158 relatively normal Type Ia supernovae (SNe Ia) by dividing them into two groups in terms of the expansion velocity inferred from the absorption minimum of the Si II...
The Quasar SDSS J1536+0441: An Unusual Double-Peaked Emitter (2009)
Chornock, Ryan, Bloom, J. S., Cenko, S. B., Filippenko, A. V., Silverman, J. M., Hicks, M. D., ...
The quasar SDSS J153636.22+044127.0, exhibiting peculiar broad emission-line profiles with multiple components, was proposed as a candidate sub-parsec binary supermassive black hole system. More...
GRB 080503: implications of a naked short gamma-ray burst dominated by extended emission (2009)
Perley, D. A., Metzger, B. D., Granot, J., Butler, N. R., Sakamoto, T., Ramirez-Ruiz, Enrico, ...
We report on observations of GRB 080503, a short gamma-ray burst (GRB) with very bright extended emission (about 30 times the gamma-ray fluence of the initial spike) in conjunction with a thorough...
Observations of the naked-eye GRB 080319B: implications of nature's brightest explosion (2009)
Bloom, J. S., Perley, D. A., Li, W., Butler, N. R., Miller, A. A., Kocevski, D., ...
The first gamma-ray burst (GRB) confirmed to be bright enough to be seen with the naked eye, GRB 080319B at redshift z = 0.937, allowed for exquisite follow-up observations across the electromagnetic...
GRB 080503: implications of a naked short gamma-ray burst dominated by extended emission (2009)
Perley, D. A., Metzger, B. D., Granot, J., Butler, N. R., Sakamoto, T., Ramirez-Ruiz, Enrico, ...
We report on observations of GRB 080503, a short gamma-ray burst (GRB) with very bright extended emission (about 30 times the gamma-ray fluence of the initial spike) in conjunction with a thorough...
The normal type Ia SN 2003hv out to very late phases (2009)
Leloudas, G., Stritzinger, M. D., Sollerman, J., Burns, C. R., Kozma, C., Krisciunas, K., ...
Perley, D. A., Li, W., Chornock, R., Prochaska, J. X., Butler, N. R., Chandra, P., ...
The optical afterglow of long-duration GRB 071003 is among the brightest yet to be detected from any GRB, with R ≈ 12 mag in KAIT observations starting 42 s after the GRB trigger, including...
Gal-Yam, A., Bufano, F., Barlow, T. A., Baron, E., Benetti, S., Cappellaro, E., ...
We present the initial results from our GALEX program designed to obtain ultraviolet (UV) spectra of nearby core-collapse supernovae (SNe). Our first target, SN 2005ay in the nearby galaxy NGC 3938,...
The broad-lined type Ic supernova 2003jd (2008)
Valenti, S., Benetti, S., Cappellaro, E., Patat, F., Mazzali, P., Turatto, M., ...
The results of a worldwide coordinated observational campaign on the broad-lined Type Ic supernova (SN Ic) 2003jd are presented. In total, 74 photometric data points and 26 spectra were collected...
The rapidly flaring afterglow of the very bright and energetic GRB 070125 (2008)
Updike, A.C., Haislip, J.B., Nysewander, M.C., Fruchter, A.S., Kann, D.A., Klose, S., ...
We report on multiwavelength observations, ranging from X-ray to radio wave bands, of the IPN-localized gamma-ray burst GRB 070125. Spectroscopic observations reveal the presence of absorption lines...
Wood-Vasey, W. M., Miknaitis, G., Stubbs, C. W., Jha, S., Riess, A. G., Garnavich, P. M., ...
We present constraints on the dark energy equation-of-state parameter, w = P/(ρc2), using 60 SNe Ia from the ESSENCE supernova survey. We derive a set of constraints on the nature of the dark energy...
An optical supernova associated with the X-ray flash XRF 060218 (2006)
Pian, E., Mazzali, P. A., Masetti, N., Ferrero, P., Klose, S., Palazzi, E., ...
Long-duration gamma-ray bursts (GRBs) are associated with type Ic supernovae(1) that are more luminous than average(2-5) and that eject material at very high velocities. Less-luminous supernovae were...
Observation Of Cosmological Time Dilation Using Type Ia Supernovae As Clocks (1997)
G.GOLDHABER, S. Deustua, S. Gabi, D. Groom, I. Hook, M. KIM, ...
. This work is based on the first results from a systematic search for high redshift Type Ia supernovae. Using filters in the R-band we discovered seven such SNe, with redshift z = 0:3 \Gamma 0:5,...
Kim, Alex G., Gabi, S., Goldhaber, G., Groom, Donald E., Hook, Isobel, Kim, Min Kook, ...
The Supernova Cosmology Project has discovered over 28 supernovae (SNs) at 0.35 < z < 0.65 in an ongoing program that uses Type Ia SNs (SN Ia's) as high-redshift distance indicators. Here we...
Gravitational lensing statistics based on a large sample of highly luminous quasars (1993)
Surdej, Jean, Claeskens, J F, Crampton, D, Filippenko, A V, Hutsemekers, Damien, Magain, Pierre, ...
Results on gravitational lensing statistics applied to a sample of 469 highly luminous quasars are reported. The objects were directly imaged, either from the ground under optimal seeing conditions,...
Claeskens, J F, Crampton, D, Filippenko, A V, Hutsemekers, Damien, Magain, Pierre, Pirenne, B, ...
31st Liège International Astrophysical Colloquium "Gravitational lenses in the Universe"
Surdej, Jean, Claeskens, J F, Crampton, D, Filippenko, A V, Hutsemekers, Damien, Magain, Pierre, ...
"Science with the Hubble Space Telescope", ESO Conference