Evidence for mass ejection associated with long secondary periods in red giants (2009)
Approximately 30% of luminous red giants exhibit a Long Secondary Period (LSP) of variation in their light curves, in addition to a shorter primary period of oscillation. The cause of the LSP has so...
Long Secondary Periods in Variable Red Giants (2009)
Nicholls, C. P., Wood, P. R., Cioni, M. -R. L., Soszyński, I.
We present a study of a sample of LMC red giants exhibiting Long Secondary Periods (LSPs). We use radial velocities obtained from VLT spectral observations and MACHO and OGLE light curves to examine...
Tisserand, P., Wood, P. R., Marquette, J. B., Afonso, C., Albert, J. N., Andersen, J., ...
R Coronae Borealis stars (RCB) are a rare type of evolved carbon-rich supergiant stars that are increasingly thought to result from the merger of two white dwarfs, called the Double degenerate...
The effect of metallicity on Cepheid magnitudes and the distance to M33 (2009)
Scowcroft, V., Bersier, D., Mould, J. R., Wood, P. R.
We present the results from a multi-epoch survey of two regions of M33 using the 3.5m WIYN telescope. The inner field is located close to the centre of the galaxy, with the outer region situated...
Ireland, M. J., Scholz, M., Wood, P. R.
We describe the Cool Opacity-sampling Dynamic EXtended (codex) atmosphere models of Mira variable stars, and examine in detail the physical and numerical approximations that go in-to the model...
Woodruff, H. C., Ireland, M. J., Tuthill, P. G., Monnier, J. D., Bedding, T. R., Danchi, W. C., ...
We present results from a spectro-interferometric study of the Miras o Cet, R Leo and W Hya obtained with the Keck Aperture Masking Experiment from 1998 Sep to 2002 Jul. The spectrally dispersed...
Ireland, M. J., Scholz, M., Wood, P. R.
We describe the Cool Opacity-sampling Dynamic EXtended (CODEX) atmosphere models of Mira variable stars, and examine in detail the physical and numerical approximations that go in to the model...
Sloan, G. C., Kraemer, K. E., Wood, P. R., Zijlstra, A. A., Bernard-Salas, J., Devost, D., ...
We observed a sample of evolved stars in the Large and Small Magellanic Clouds (LMC and SMC) with the Infrared Spectrograph on the Spitzer Space Telescope. Comparing samples from the SMC, LMC, and...
R Coronae Borealis stars in the Galactic Bulge discovered by EROS-2 (2008)
Tisserand, P., Marquette, J. B., Wood, P. R., Lesquoy, E., Beaulieu, J. P., Milsztajn, A., ...
Rare types of variable star may give unique insight into short-lived stages of stellar evolution. The systematic monitoring of millions of stars and advanced light curve analysis techniques of...
Degenerate Thermal Pulses in AGB Stars (2007)
C. A. Frost, J. C. Lattanzio, P. R. Wood
We report on the discovery of a new kind of thermal pulse in intermediate mass AGB stars. Deep dredge-up during normal thermal pulses on the AGB leads to the formation of a long, unburnt tail to the...
. Background and Motivation (2007)
Our Knowledge, J. C. Lattanzio, C. A. Frost, R. C. Cannon, P. R. Wood
e. The motivation for studying HBB can be briefly summarised: When the brightest AGB stars in the Magellanic Clouds were observed [1] they were found not to be carbon stars. It was suggested by [1]...
Cioni, M. -R. L., Bekki, K., Clementini, G., Emerson, J. P., Evans, C. J., ...
The Magellanic System represents one of the best places to study the formation and evolution of galaxies. Photometric surveys of various depths, areas and wavelengths have had a significant impact on...
The AGB stars of the intermediate-age LMC cluster NGC 1846 Variability and age determination (2007)
Aims: To investigate variability and to model the pulsational behaviour of AGB variables in the intermediate-age LMC cluster NGC 1846. Methods: Our own photometric monitoring has been combined with...
Matsuura, M., Zijlstra, A. A., Bernard-Salas, J., Menzies, J. W., Sloan, G. C., Whitelock, P. A., ...
We have observed five carbon-rich AGB stars in the Fornax dwarf spheroidal (dSph) galaxy, using the Infrared Spectrometer on board the Spitzer Space Telescope. The stars were selected from a...
Abundances in intermediate-mass AGB stars undergoing third dredge-up and hot-bottom burning (2007)
McSaveney, J. A., Wood, P. R., Scholz, M., Lattanzio, J. C., Hinkle, K. H.
High dispersion near-infrared spectra have been taken of seven highly-evolved, variable, intermediate-mass (4-6 Msun) AGB stars in the LMC and SMC in order to look for C, N and O variations that are...
Modelling the Near-IR Spectra of Red Supergiant-dominated Populations (2007)
Lançon, A., Gallagher, J. S., De Grijs, R., Hauschildt, P., Ladjal, D., Mouhcine, M., ...
We report on recent progress in the modelling of the near-IR spectra of young stellar populations, i.e. populations in which red supergiants (RSGs) are dominant. First, we discuss the determination...
Luminosities and mass-loss rates of carbon stars in the Magellanic Clouds (2007)
Groenewegen, M. A. T, Wood, P. R, Sloan, G. C, Cioni, M. -R. L, Feast, M. W, ...
Dust radiative transfer models are presented for 60 carbon stars in the Magellanic Clouds (MCs) for which 5-35 mu m Spitzer infrared spectrograph (IRS) spectra and quasi-simultaneous ground-based...
Mid-Infrared Spectroscopy of Carbon Stars in the Small Magellanic Cloud (2007)
Sloan, G. C., Kraemer, K. E., Matsuura, M., Wood, P. R., Price, S. D., Egan, M. P.
We have observed a sample of 36 objects in the Small Magellanic Cloud (SMC) with the Infrared Spectrometer on the Spitzer Space Telescope. Of these sources, 19 are carbon stars. An examination of the...
Spitzer spectroscopy of carbon stars in the Small Magellanic Cloud. (2007)
Lagadec, E., Zijlstra, A.A., Sloan, G.C., Matsuura, M., Wood, P.R., Van Loon, J.Th., ...
‘The definitive version is available at www.blackwell-synergy.com.’ Copyright Blackwell Publishing DOI: 10.1111/j.1365-2966.2007.11517.x
Tracing the development of dust around evolved stars: The case of 47 Tuc (2006)
Lebzelter, T., Posch, T., Hinkle, K., Wood, P. R., Bouwman, J.
We observed mid-infrared (7.5-22 mum) spectra of AGB stars in the globular cluster 47 Tuc with the Spitzer telescope and find significant dust features of various types. Comparison of the...
A Post-AGB Star in the Small Magellanic Cloud Observed with the Spitzer Infrared Spectrograph (2006)
Kraemer, Kathleen E., Sloan, G. C., Bernard-Salas, J., Price, Stephan D., Egan, Michael P., Wood, P. R.
We have observed an evolved star with a rare combination of spectral features, MSX SMC 029, in the Small Magellanic Cloud (SMC) using the low-resolution modules of the Infrared Spectrograph on the...
Matsuura, M., Wood, P. R., Sloan, G. C., Zijlstra, A. A., Van Loon, J. Th., Groenewegen, M. A. T., ...
We investigate the molecular bands in carbon-rich AGB stars in the Large Magellanic Cloud (LMC), using the InfraRed Spectrograph (IRS) on board the Spitzer Space Telescope (SST) over the 5--38 micron...
Mid-infrared spectroscopy of carbon stars in the Small Magellanic Cloud (2006)
Sloan, G. C., Kraemer, K. E., Matsuura, M., Wood, P. R., Price, S. D., Egan, M. P.
We have observed a sample of 36 objects in the Small Magellanic Cloud (SMC) with the Infrared Spectrometer on the Spitzer Space Telescope. Nineteen of these sources are carbon stars. An examination...
We utilize nonlinear pulsation models to reproduce the observed light and color curves for two samples of bump Cepheid variables, 19 from the Large Magellanic Cloud and 9 from the Small Magellanic...
Kraemer, Kathleen E., Sloan, G. C., Wood, P. R., Price, Stephan D., Egan, Michael P.
We observed 36 evolved stars in the Small Magellanic Cloud (SMC) using the low-resolution mode of the Infrared Spectrograph (IRS) on the Spitzer Space Telescope. Two of these stars, MSX SMC 014 and...
Tracing the development of dust around evolved stars: The case of 47 Tuc (2006)
Lebzelter, Th, Posch, Th, Hinkle, K., Wood, P. R., Bouwman, J.
We observed mid-infrared (7.5-22 mum) spectra of asymptotic giant branch (AGB) stars in the globular cluster 47 Tuc with the Spitzer Space Telescope, and we find significant dust features of various...
Zijlstra, A.A., Matsuura, M., Wood, P.R., Sloan, G.C., Lagadec, E., Loon, J.T. Van, ...
We present a Spitzer Space Telescope spectroscopic survey of mass-losing carbon stars (and one oxygen-rich star) in the Large Magellanic Cloud (LMC). The stars represent the superwind phase on the...
Matsuura, M., Wood, P.R., Sloan, G.C., Zijlstra, A.A., Loon, J.T. Van, Groenewegen, M.A.T., ...
We investigate the molecular bands in carbon-rich asymptotic giant branch (AGB) stars in the Large Magellanic Cloud (LMC), using the Infrared Spectrograph (IRS) onboard the Spitzer Space Telescope...
Zijlstra, A.A., Matsuura, M., Wood, P.R., Sloan, G.C., Lagadec, E., Van Loon, J.Th., ...
‘The definitive version is available at www.blackwell-synergy.com.’ Copyright Blackwell Publishing DOI: 10.1111/j.1365-2966.2006.10623.x
Matsuura, M., Wood, P.R., Sloan, G.C., Zijlstra, A.A., Van Loon, J.Th., Groenewegen, M.A.T., ...
‘The definitive version is available at www.blackwell-synergy.com.’ Copyright Blackwell Publishing DOI: 10.1111/j.1365-2966.2006.10664.x
Ohnaka, K., Scholz, M., Wood, P. R.
We present a comparison of dynamical model atmospheres with mid-infrared (~11 micron) interferometric and spectroscopic observations of the Mira variable o Cet. The dynamical model atmospheres of...
Van Loon, Jacco Th., Oliveira, J. M., Wood, P. R., Zijlstra, A. A., Sloan, G. C., Matsuura, M., ...
We present the first thermal-infrared spectra of an extra-galactic Young Stellar Object (YSO), IRAS05328-6827 in the HII region LHA 120-N148 in the Large Magellanic Cloud. The observed and modelled...
Kraemer, Kathleen E., Sloan, G. C., Wood, P. R., Price, Stephan D., Egan, Michael P.
We observed 36 evolved stars in the Small Magellanic Cloud (SMC) using the low-resolution mode of the Infrared Spectrograph (IRS) on the Spitzer Space Telescope. Two of these stars, MSX SMC 014 and...
The unusual silicate dust around HV 2310, an evolved star in the LMC (2005)
Sloan, G. C., Devost, D., Bernard-Salas, J., Wood, P. R., Houck, J. R.
The spectrum of HV 2310, an evolved star in the Large Magellanic Cloud, taken with the Infrared Spectrograph (IRS) on the Spitzer Space Telescope reveals the presence of an optically thin shell of...
Long period variables in 47 Tuc: direct evidence for lost mass (2005)
We have identified 22 new variable red giants in 47 Tuc and determined periods for another 8 previously known variables. All red giants redder than V-I_c=1.8 are variable at the limits of our...
SSSPM J1549$-$3544 Is Not a White Dwarf (2005)
Farihi, J., Wood, P. R., Stalder, B.
Spectroscopy and photometry demonstrate that SSSPM J1549$-$3544 is not a cool white dwarf but a high velocity metal-poor halo star.
An HST Study of the Supernovae Accompanying GRB 040924 and GRB 041006 (2005)
Soderberg, A. M., Kulkarni, S. R., Price, P. A., Fox, D. B., Berger, E., ...
We present the results from a {\it Hubble Space Telescope/ACS} study of the supernovae associated with gamma-ray bursts 040924 ($z=0.86$) and 041006 ($z=0.71$). We find evidence that both GRBs were...
Long period variables in the globular cluster 47 Tuc: radial velocity variations (2005)
Lebzelter, T., Wood, P. R., Hinkle, K. H., Joyce, R. R., Fekel, F. C.
We present near infrared velocity curves for 12 long period variables (LPVs) in the globular cluster 47 Tuc (NGC 104). New light curves are also presented for these variables. Results are compared...
Loon, J.T. Van, Oliveira, J.M., Wood, P.R., Zijlstra, A.A., Sloan, G.C., Matsuura, M., ...
We present the first thermal-infrared spectra of an extragalactic Young Stellar Object (YSO), IRAS05328-6827 in the HII region LHA120-N148 in the Large Magellanic Cloud (LMC). The observed and...
Van Loon, J.Th., Oliveira, J.M., Wood, P.R., Zijlstra, A.A., Sloan, G.C., Matsuura, M., ...
‘The definitive version is available at www.blackwell-synergy.com.’ Copyright Blackwell Publishing DOI: 10.1111/j.1745-3933.2005.00108.x
A study of bright Southern Long Period Variables (2004)
Lebzelter, T., Hinkle, K. H., Wood, P. R., Joyce, R. R., Fekel, F. C.
In this paper we present radial velocity curves of AGB variables that exhibit various kinds of anomalies: Semiregular variables (SRVs) with typical mira periods, SRVs exceeding the mira 2.5 mag...
The K-band intensity profile of R Leonis probed by VLTI/VINCI (2004)
Fedele, D., Wittkowski, M., Paresce, F., Scholz, M., Wood, P. R., Ciroi, S.
We present near-infrared K-band interferometric measurements of the Mira star R Leonis obtained in April 2001 and January 2002 with the VLTI, the commissioning instrument VINCI, and the two test...
Ireland, M. J., Scholz, M., Tuthill, P. G., Wood, P. R.
Models of M-type Miras with masses of 1 $M_\odot$ and 1.2 $M_\odot$, i.e. with envelope masses of about 0.4 $M_\odot$ and 0.6 $M_\odot$, have been constructed, and a comparison has been made of their...
Woodruff, H. C., Eberhardt, M., Driebe, T., Ohnaka, K., Richichi, A., ...
We present K-band commissioning observations of the Mira star prototype o Cet obtained at the ESO Very Large Telescope Interferometer (VLTI) with the VINCI instrument and two siderostats. The...
Tej, A., Lancon, A., Scholz, M., Wood, P. R.
Pulsation models are crucial for the interpretation of spectrophotometric and interferometric observations of Mira variables. Comparing predicted and observed spectra is one way of establishing the...
Polosukhina, N. S., Drake, N. A., Hack, M., Wood, P. R., Shavrina, A. V.
We present the results of the observations of some roAp stars made at Mount Stromlo Observatory during 17 nights in 2001 September-October. This long observing run permitted us to obtain a good...
Variable Stars in the Fornax Dwarf Galaxy (2001)
We present a search for variable stars in the Fornax dwarf galaxy covering an area of 1/2 a square degree. We have ~30 epochs of VI data. We found and determined periods for more than 500 RR Lyrae,...
PSR J1740-3052 - a pulsar with a massive companion (2000)
Stairs, I. H., Manchester, R. N., Lyne, A. G., Kaspi, V. M., Camilo, F., Bell, J. F., ...
We report on the discovery of a binary pulsar, PSR J1740-3052, during the Parkes multibeam survey. Timing observations of the 570-ms pulsar at Jodrell Bank and Parkes show that it is young, with a...
Near-infrared and Br_gamma observations of post-AGB stars (2000)
Van De Steene, G. C., Wood, P. R.
We investigate the infrared properties of the IRAS sources not confirmed as PNe in Van de Steene & Pottasch (1993). We observed 28 objects in the N-band of which 20 were detected and 5 were resolved....
Microalbuminuria following anaphylaxis with general anaesthesia (2000)
Wood, P. R., Gosling, P., Cook, M. C.
Microalbuminuria is increasingly recognized as a marker of pathologies that cause acute systemic capillary leak. We report a case of an anaphylactic reaction to general anaesthesia involving cardiac...
Alvarez, R., Lancon, A., Plez, B., Wood, P. R.
Based on a new and large sample of optical and near-infrared spectra obtained at the Mount Stromlo and Siding Spring Observatories (Lancon & Wood 1998; Lancon & Wood, in preparation),...
The Brightest Carbon Stars (1997)
C. A. Frost, R. C. Cannon, J. C. Lattanzio, P. R. Wood, M. Forestini
. It is currently accepted that Hot-Bottom-Burning (HBB) in intermediate-mass asymptotic giant branch (AGB) stars prevents the formation of C stars. Nevertheless, we present the results of some...
The Brightest Carbon Stars (1997)
C. A. Frost, R. C. Cannon, J. C. Lattanzio, P. R. Wood, M. Forestini
. It is currently accepted that Hot-BottomBurning (HBB) in intermediate-mass asymptotic giant branch (AGB) stars prevents the formation of C stars. Nevertheless, we present in this paper the results...
Astrometric measurements of asteroids (1995)
Steel, D. I., McNaught, R. H., Asher, D. J., Garradd, G. J., Russell, K. S., Hartley, M., ...
Astrometric measurements of asteroids (1995)
Steel, D. I., McNaught, R. H., Asher, D. J., Garradd, G. J., Russell, K. S., Hartley, M., ...
Sinus bradycardia associated with traumatic haemothorax (1994)
A 39-year-old male suffered a closed chest deceleration injury. He presented with clinical and radiological signs consistent with trauma to the thoracic aorta, but also developed sinus bradycardia...
TRAINING IN FIBREOPTIC TRACHEAL INTUBATION IN THE NORTH OF ENGLAND (1992)
WOOD, P. R., DRESNER, M., LAWLER, P. G. P.
Twenty-nine departments of anaesthesia in the North of England were questioned about the availability and teaching of fibreoptic tracheal intubation techniques. While 27 departments had both suitable...
Expression of ovine gamma interferon in Escherichia coli and Corynebacterium glutamicum.
Billman-Jacobe, H, Hodgson, A L, Lightowlers, M, Wood, P R, Radford, A J
Bacteria of two species, Escherichia coli and Corynebacterium glutamicum, were used as hosts to express recombinant ovine gamma interferon as a fusion protein with glutathione S-transferase. The...
Purification and characterization of major antigens from a Mycobacterium bovis culture filtrate.
Fifis, T, Costopoulos, C, Radford, A J, Bacic, A, Wood, P R
Ten major antigens from Mycobacterium bovis culture filtrate of 39, 32, 30, 25, 24, 22 (a and b forms), 19, 15, and 12 kDa have been purified and characterized by classical physicochemical methods....
Wood, P R, Young, A M, McKimm-Breschkin, J L, Cheers, C
Splenectomy of mice genetically susceptible to Listeria monocytogenes genetically susceptible mouse strains increased their resistance to L. monocytogenes infection but had no effect on the course of...
Genetic control of Propionibacterium acnes-induced protection of mice against Babesia microti.
Using various strains of inbred mice, we found that Propionibacterium acnes-induced protection against the hemoprotozoan parasite Babesia microti was controlled by a dominant gene(s) not linked to...
Possible importance of macrophage-derived mediators in acute malaria.
Clark, I A, Virelizier, J L, Carswell, E A, Wood, P R
Tumor necrosis factor, lymphocyte-activating factor, and enhanced levels of type I interferon were found in serum samples taken 2 h after mice infected with Plasmodium vinckei subsp. petteri received...
Expression of ovine gamma interferon in Escherichia coli and Corynebacterium glutamicum.
Billman-Jacobe, H, Hodgson, A L, Lightowlers, M, Wood, P R, Radford, A J
Bacteria of two species, Escherichia coli and Corynebacterium glutamicum, were used as hosts to express recombinant ovine gamma interferon as a fusion protein with glutathione S-transferase. The...
Purification and characterization of major antigens from a Mycobacterium bovis culture filtrate.
Fifis, T, Costopoulos, C, Radford, A J, Bacic, A, Wood, P R
Ten major antigens from Mycobacterium bovis culture filtrate of 39, 32, 30, 25, 24, 22 (a and b forms), 19, 15, and 12 kDa have been purified and characterized by classical physicochemical methods....
Wood, P R, Young, A M, McKimm-Breschkin, J L, Cheers, C
Splenectomy of mice genetically susceptible to Listeria monocytogenes genetically susceptible mouse strains increased their resistance to L. monocytogenes infection but had no effect on the course of...
Genetic control of Propionibacterium acnes-induced protection of mice against Babesia microti.
Using various strains of inbred mice, we found that Propionibacterium acnes-induced protection against the hemoprotozoan parasite Babesia microti was controlled by a dominant gene(s) not linked to...
Possible importance of macrophage-derived mediators in acute malaria.
Clark, I A, Virelizier, J L, Carswell, E A, Wood, P R
Tumor necrosis factor, lymphocyte-activating factor, and enhanced levels of type I interferon were found in serum samples taken 2 h after mice infected with Plasmodium vinckei subsp. petteri received...
Production of lymphocyte activating factor in vivo.
Wood, P R, Andrus, L, Clark, I A
Mice injected with Propionibacterium acnes, when challenged with lipopolysaccharide release a range of soluble mediators into their serum. Included among these is lymphocyte activating factor (LAF,...
Cytokine release by ovine macrophages following infection with Chlamydia psittaci
Entrican, G, Wilkie, R, Mcwaters, P, Scheerlinck, J-P, Wood, P R, Brown, J
Chlamydia psittaci is an obligate intracellular pathogen that causes abortion in both sheep and humans. The disease in sheep (but not humans) is characterized by a long-term persistent phase that...
Junior medical staff and the assessment of trauma.
Wood, P. R., Foley, M. A., Peel, W. J., Lawler, P. G.
Eighty junior doctors in the acute specialties received a postal questionnaire aimed at assessing their ability to assign priority to the treatment of patients who may have sustained serious trauma....