439 citations · 2.1k across the 54 of their papers we have counts for
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Neon and Chemical Fractionation Trends in Late-type Stellar Atmospheres
D. Garcia-Alvarez, J. J. Drake, P. Testa
A survey of Ne, O and Fe coronal abundances culled from the recent literature for about 60 late-type stars confirms that the Ne/O ratio of stellar outer atmospheres is about two ti…
The Brightest Serendipitous X-ray Sources in ChaMPlane
Kyle Penner, Maureen van den Berg, JaeSub Hong +3
The Chandra Multiwavelength Plane (ChaMPlane) Survey is a comprehensive effort to constrain the population of accretion-powered and coronal low-luminosity X-ray sources (L_X < 10^3…
The Accretion Disk Wind in the Black Hole GRO J1655-40
J. M. Miller, J. Raymond, C. S. Reynolds +3
We report on simultaneous Chandra/HETGS and RXTE observations of the transient stellar-mass black hole GRO J1655-40, made during its 2005 outburst. Chandra reveals a line-rich X-ra…
Double-peaked Oxygen Lines Are not Rare in Nebular Spectra of Core-Collapse Supernovae
Maryam Modjaz, R. P. Kirshner, S. Blondin +2
Double-peaked oxygen lines in the nebular spectra of two peculiar Type Ib/c Supernovae (SN Ib/c) have been interpreted as off-axis views of a GRB-jet or unipolar blob ejections. He…
ATCA observations of the very young Planetary Nebula SAO 244567
G. Umana, C. Trigilio, L. Cerrigone +2
The radio emission from the youngest known Planetary nebula, SAO244567, has been mapped at 1384, 2368, 4800, 8640, 16832 and 18752 MHz by using the Australian Telescope Compact Arr…
Millimeter observations of Planetary Nebulae: a contribution to the Planck pre-launch catalogue
G. Umana, P. Leto, C. Trigilio +5
We present new millimetre 43 GHz observations of a sample of radio-bright Planetary Nebulae. Such observations were carried out to have a good determination of the high-frequency r…
The Chandra View of Galaxy Mergers
N. J. Brassington, T. J. Ponman, A. M. Read
From a Chandra survey of nine interacting galaxy systems the evolution of X-ray emission during the merger process has been investigated. It is found that the X-ray luminosity peak…
Soft-excess in ULX spectra: disc emission or wind absorption?
A. C. Goncalves, R. Soria
We assess the claim that Ultra-luminous X-ray sources (ULXs) host intermediate-mass black holes (BH) by comparing the cool disc-blackbody model with a range of other models, namell…
Modelling mid-Z element atmospheres for strongly-magnetized neutron stars
Kaya Mori, Wynn C. G. Ho
We construct models for strongly-magnetized neutron star atmospheres composed of mid-Z elements (carbon, oxygen and neon) with magnetic fields B=10^{12}-10^{13} G and effective tem…
The Interstellar Medium of GRB Host Galaxies I. Echelle Spectra of Swift GRB Afterglows
J. X. Prochaska, H. -W. Chen, J. S. Bloom +8
We present optical echelle spectra of four gamma-ray burst (GRB) afterglows (GRB 050730, GRB 050820, GRB 051111, and GRB 060418) discovered during the first 1.5 years of operation…
Recent observational progress in AM CVn binaries
G. Ramsay, C. Brocksopp, P. Groot +9
We present the results of some recent research on AM CVn systems. We present: X-ray/UV observations made using XMM-Newton; the X-ray grating spectrum of RX J1914+24; preliminary re…
A Compact Supermassive Binary Black Hole System
C. Rodriguez, G. B. Taylor, R. T. Zavala +3
We report on the discovery of a supermassive binary black hole system in the radio galaxy 0402+379, with a projected separation between the two black holes of just 7.3 pc. This is…
Infrared SEDs of Seyfert Galaxies: Starbursts and the Nature of the Obscuring Medium
Catherine L. Buchanan, Jack F. Gallimore, Christopher P. O'Dea +5
We present the results of IRS low-resolution spectroscopy of 51 Seyfert galaxies, part of a large Spitzer observing program to determine the mid-to-far infrared spectral energy dis…
Kinematical and Dynamical Modeling of Elliptical Galaxies
G. A. Mamon, E. Lokas, A. Dekel +2
Elements of kinematical and dynamical modeling of elliptical galaxies (Es) are presented. In projection, NFW models resemble Sersic models, but with a very narrow range of shapes (…
Radio Emission from the Double-Pulsar System J0737-3039 Revisited
S. Chatterjee, W. M. Goss, W. F. Brisken
The double pulsar J0737-3039 is the only known system in which the relativistic wind emitted by a radio pulsar demonstrably interacts with the magnetosphere of another one. We repo…
SDSS J124058.03-015919.2: A new AM CVn star with a 37-minute orbital period
G. H. A. Roelofs, P. J. Groot, T. R. Marsh +3
We present high time resolution VLT spectroscopy of SDSS J124058.03-015919.2, a new helium-transferring binary star identified in the Sloan Digital Sky Survey. We measure an orbita…
Probing the Local Group Medium Toward Mkn 421 with Chandra and FUSE
Rik J. Williams, Smita Mathur, Fabrizio Nicastro +7
We report the detection of highly-ionized gas at z~0 seen in resonant UV and X-ray absorption lines toward the z=0.03 blazar Mkn 421. A total of 13 X-ray and 3 UV lines were measur…
Semi-empiric Radiative Transfer Modeling of FUSE Stellar Spectra
A. Lobel, E. H. Avrett, J. P. Aufdenberg
We present an overview of radiative transfer modeling efforts to interpret spectra of a variety of stellar objects observed with FUSE. Detailed radiative transfer modeling of high…
Mass-loss and Recent Spectral Changes in the Yellow Hypergiant Rho Cassiopeiae
A. Lobel, J. Aufdenberg, I. Ilyin +1
The yellow hypergiant Rho Cassiopeiae (F-G Ia0) has recently become very active with a tremendous outburst event in the fall of 2000. During the event the pulsating supergiant dimm…
The simultaneous VLA observations of Sgr A* from 90 to 0.7 cm
T. An, J. -H. Zhao, X. -Y. Hong +4
We present a spectrum of Sgr A* observed simultaneously on June 17, 2003 at wavelengths from 90 to 0.7 cm with the VLA. In the spectrum, we also include the measurements of Sgr A*…
Evn, Merlin, and Vla Observations of Nrao530
X. Y. Hong, J. H. Zhao, T. An +4
We present images of NRAO530 observed with the EVN (VLBI) at 5 GHz, the MERLIN at 1 .6 and 5 GHz, and the VLA at 5 and 8 GHz showing the complex morphology on scales from pc to kpc…
An XMM-Newton view of M101 - II. Global X-ray source properties
L. P. Jenkins, T. P. Roberts, R. S. Warwick +2
We present the global X-ray properties of the point source population in the grand-design spiral galaxy M101, as seen with XMM-Newton. 108 X-ray sources are detected within the D25…
XMM-Newton observations of the interacting galaxy pairs NGC7771/0 and NGC2342/1
L. P. Jenkins, T. P. Roberts, M. J. Ward +1
We present XMM-Newton X-ray observations of the interacting galaxy pairs NGC7771/7770 and NGC2342/2341. In NGC7771, for the first time we are able to resolve the X-ray emission int…
Observations of magnetic fields in the Milky Way and in nearby galaxies with a Square Kilometre Array
R. Beck, B. M. Gaensler
The role of magnetic fields in the dynamical evolution of galaxies and of the interstellar medium (ISM) is not well understood, mainly because such fields are difficult to directly…