The Daily Brew
Selected astro-ph abstracts for Wednesday March 19
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Stellar age versus mass of early-type galaxies in the Virgo Cluster
Thorsten Lisker (1) and Zhanwen Han (2) ((1) ARI/Zentrum fuer
Astronomie, University of Heidelberg, (2) National Astronomical Observatories
/ Yunnan Observatory, Chinese Academy of Sciences)
arXiv:0803.2512
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XMM-Newton observations of the Narrow-Line Seyfert 1 galaxy Mrk 335 in
an historical low X-ray flux state
Dirk Grupe (Penn State University), Stefanie Komossa (MPE), Luigi C.
Gallo (St. Mary's University, Halifax), Andrew C. Fabian (University of
Cambridge), Josefin Larsson (University of Cambridge), Anil K. Pradhan (Ohio
State University), Dawei Xu (Chinese Academy of Science), and Giovanni
Miniutti (University of Cambridge)
arXiv:0803.2516
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Deep optical spectroscopy of extended Lyman alpha emission around three
radio-quiet z=4.5 quasars
F. Courbin (1), P. North (1), A. Eigenbrod (1), D. Chelouche (2) ((1)
Laboratoire d'Astrophysique, Ecole Polytechnique F\'ed\'erale de Lausanne
(EPFL), Switzerland, (2) Institute for Advanced Study, Princeton, USA)
arXiv:0803.2519
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The Seyfert 1 Galaxy Mrk 335 at a very low flux state: mapping the soft
X-ray photoionised gas
A.L. Longinotti, A. Nucita, M. Santos-Lleo, M. Guainazzi (European
Space Astronomy Centre of ESA, Madrid, Spain)
arXiv:0803.2520
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Optical Albedo Theory of Strongly-Irradiated Giant Planets: The Case of
HD 209458b
A. Burrows, L. Ibgui, and I. Hubeny
arXiv:0803.2523
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The hard X-ray spectral evolution in X-ray binaries and its application
to constrain the black hole mass of ultraluminous X-ray sources
Qingwen Wu (1) and Minfeng Gu (2) ((1)International Center for
Astrophysics, Korean Astronomy and Space Science Institute, Daejeon, Republic
of Korean;(2) Shanghai Astronomical Observatory, Chinese Academy of Sciences,
Shanghai, China)
arXiv:0803.2551
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Overdensity of X-ray Sources in the Field of Nearby Clusters of Galaxies
Murat Hudaverdi, Hideyo Kunieda, Takeshi Tanaka, Yoshito Haba, Akihiro
Furuzawa, Yuzuru Tawara and E. Nihal Ercan
arXiv:0803.2575
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The Nature and Origin of Substructure in the Outskirts of M31. I.
Surveying the Stellar Content with HST/ACS
J. C. Richardson, A. M. N. Ferguson, R. A. Johnson, M. J. Irwin, N. R.
Tanvir, D. C. Faria, R. A. Ibata, K. V. Johnston, G. F. Lewis
arXiv:0803.2614
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SDSS J142625.71+575218.3, a Prototype for a New Class of Variable White
Dwarf
M. H. Montgomery (1), Kurtis A. Williams (1 and 2), D. E. Winget (1),
Patrick Dufour (3), Steven Degennaro (1), James Liebert (3) ((1) Univ. of
Texas at Austin, (2) NSF Astronomy & Astrophysics Postdoctoral Fellow, (3)
Univ. of Arizona)
arXiv:0803.2646
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