Friday, November 21, 2008

Interesting astrophysics: Nov 17 to Nov 21.

The latest crop of astronomy-related papers and preprints I consider interesting.

Galaxies and starburst galaxies

AGN-Starburst connection in NGC7582: GNIRS IFU observations
Rogemar A. Riffel, Thaisa Storchi-Bergmann, Oli L. Dors Jr, Claudia Winge, arXiv:0811.2327
Comments: 16 pages, 11 figures, accepted for publication in MNRAS

Starburst99 for Windows
Claus Leitherer, Julia Chen, arXiv:0811.2396
Comments: 19 pages, 6 figures, accepted for publication in New Astronomy

The Structure of Active Merger Remnant NGC 6240 from IRAC Observations
Stephanie J. Bush, Zhong Wang, Margarita Karovska, and Giovanni G. Fazio, The Astrophysical Journal 2008 December 1, Vol. 688, No. 2: 875-884.
Abstract | Full Text | PDF Version (601 KB)

Strange Filamentary Structures (Fireballs) around a Merger Galaxy in the Coma Cluster of Galaxies
Michitoshi Yoshida, Masafumi Yagi, Yutaka Komiyama, Hisanori Furusawa, Nobunari Kashikawa, Yusei Koyama, Hitomi Yamanoi, Takashi Hattori, and Sadanori Okamura, The Astrophysical Journal 2008 December 1, Vol. 688, No. 2: 918-930.
Abstract | Full Text | PDF Version (2398 KB)

Emission-lines calibrations of the Star Formation Rate from the Sloan Digital Sky Survey
B. Argence, F. Lamareille, arXiv:0811.2420 [ps, pdf, other]

Warm gas accretion onto the Galaxy

J. Bland-Hawthorn, arXiv:0811.2467 [ps, pdf, other]
Comments: 14 pages, 6 figures. "The Galaxy Disk in Cosmological Context," Copenhagen, IAU Symp 254, in press

A kinematic study of the irregular dwarf galaxy NGC 2366 using HI and Halpha observations
J. van Eymeren, M. Marcelin, B. Koribalski, R.-J. Dettmar, D.J. Bomans, J.-L. Gach, P. Balard, arXiv:0811.2724 [pdf, other]
Comments: 15 pages, 14 figures, accepted for publication by A&A

The Expected Detection of Dust Emission from High-Redshift Lyman Alpha Galaxies
Steven Finkelstein, Sangeeta Malhotra, James Rhoads, Nimish Hathi, Norbert Pirzkal, arXiv:0811.2794 [ps, pdf, other]
Comments: Accepted to MNRAS; 9 pages, 5 figures

MgII absorption systems and their neighbouring galaxies from a background subtraction technique
Michelle Caler, Ravi Sheth, Bhuvnesh Jain, arXiv:0811.2805 [ps, pdf, other]
Comments: Submitted to MNRAS

Identikit 1: A Modeling Tool for Interacting Disk Galaxies
Joshua E. Barnes, John E. Hibbard, arXiv:0811.3039 [ps, pdf, other]
Comments: 22 pages, 16 figures. Accepted by The Astronomical Journal; to appear February 2009. To get a copy with high-resolution figures, use the web interface, or download software, see this http URL

Galactic Parameters from Whole Sky 2MASS Star Count
C.K. Chang, C.M. Ko, T.H. Peng, arXiv:0811.3269 [pdf, other]

Spectra of Nearby Galaxies Measured with a New Very Broadband Receiver
Gopal Narayanan, Ronald L. Snell, Neal R. Erickson, Aeree Chung, Mark H. Heyer, Min Yun, William M. Irvine, arXiv:0811.3374 [ps, pdf, other]
Comments: published in the Proceedings of the International Astronomical Union (2008), 4. Vol 251, pp 251-256 Cambridge University Press Journal-ref: Organic Matter in Space, Proceedings of the International Astronomical Union, 2008, IAU Symposium, Volume 251, p. 251-256

(The galaxies are M82, NGC 253, Arp 220 and IC 342)

Active Galactic Nuclei

The location and kinematics of the coronal-line emitting regions in AGN
Authors: J. R. Mullaney, M. J. Ward, C. Done, G. J. Ferland, N. Schurch, arXiv:0811.3204 [ps, pdf, other]
Comments: 6 Pages, 5 Figures, Accepted for publication in MNRAS Letters

X-ray astronomy

On the importance of satellite lines to the He-like K ALPHA complex and the G ratio for calcium, iron, and nickel
J. Oelgoetz, C. J. Fontes, H. L. Zhang, S. N. Nahar, A. K. Pradhan, arXiv:0811.2240
Comments: 12 pages, 5 figures, to appear in Monthly Notices of the Royal Astronomical Society.

Searching for Narrow Emission Lines in X-Ray Spectra: Computation and Methods
Taeyoung Park, David A. van Dyk, and Aneta Siemiginowska, The Astrophysical Journal 2008 December 1, Vol. 688, No. 2: 807-825.
Abstract | Full Text | PDF Version (3531 KB)

Chi-square and Poissonian Data: Biases Even in the High-Count Regime and How to Avoid them
Philip J. Humphrey, Wenhao Liu, David A. Buote, arXiv:0811.2796 [ps, pdf, other]
Comments: 9 pages, 2 figures. Accepted for publication in the Astrophysical Journal

Wide Area X-ray Surveys for AGN and Starburst Galaxies
A. Ptak, arXiv:0811.3223 [ps, pdf, other]
Comments: 7 pages, 5 figures. Conference proceedings in "Classification and Discovery in Large Astronomical Surveys", 2008, C.A.L. Bailer-Jones (ed.)


A hydrodynamical analysis of the steady-state shock model
Authors: A. Preite Martinez, arXiv:0811.3338 [pdf]
Comments: 9 pages, to be published in The Open Astronomy Journal (this http URL)


A Realistic Cosmological Model Based on Observations and Some Theory Developed Over the Last 90 Years
Geoffrey Burbidge, arXiv:0811.2402
Comments: 21 pages, conference

The anti-Big Bang contrarians are a dying breed. This is worth reading simply to see some of the reasons why they believe what they believe, before they are gone and forgetten. I expect that the detailed refutations of this that will undoubtedly appear in the next few weeks or months will be more informative regarding the validity of the hot Big Bang cosmology than the Burbidge paper is.

Stars and Supernovae

Supernova 1996cr: SN 1987A's Wild Cousin?
F. E. Bauer, V. V. Dwarkadas, W. N. Brandt, S. Immler, S. Smartt, N. Bartel, and M. F. Bietenholz, The Astrophysical Journal 2008 December 1, Vol. 688, No. 2: 1210-1234.
Abstract | Full Text | PDF Version (1314 KB)

No evidence for mass segregation in young clusters
J. Ascenso, J. Alves, M. T. V. T. Lago, arXiv:0811.3213 [pdf, other]
Comments: 10 pages, 12 figures. Download a high-resolution version at this http URL (1 MB)

Planets, Astrobiology

Mars Before the Space Age
Barrie W Jones, arXiv:0811.2700 [pdf]
Comments: 13 pages as published, 13 Figures. Journal-ref: Int. J. Astrobiol. vol. 7 no. 2, 143-155 (2008)

IRAS-based whole-sky upper limit on Dyson Spheres
Richard A. Carrigan Jr, arXiv:0811.2376
Comments: 32 pages, 8 figures

You will be relieved to know that there are no Type II civilizations within 300 pc of us!

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