Friday, September 11, 2009

Interesting Astrophysics: Sep 07 to Sep 11

Of particular note there are interesting papers on theoretical models of dust-driven stellar winds (Mattsson et al) and SN Ia-driven galactic winds (Tang et al), along with observations of z~3 star forming galaxies showing signs of superwinds driven by core collapse supernova activity (Lemoine-Busserolle et al).

I also found Guio & Achilleos's paper on image decomposition using Voronoi tessellation quite interesting.

Galaxies and Starbursts

Cosmic-ray driven dynamo in the interstellar medium of irregular galaxies
H. Siejkowski, M. Soida, K. Otmianowska-Mazur, M. Hanasz, D.J. Bomans, arXiv:0909.0926 [ps, pdf, other]
Comments: 8 pages, 6 figures, submitted to A&A

The Distribution of Stars and Stellar Remnants at the Galactic Center
David Merritt, arXiv:0909.1318 [ps, pdf, other]
Comments: 22 pages, 18 figures

2D Kinematics and Physical Properties of z~3 Star-Forming Galaxies
M. Lemoine-Busserolle, A. Bunker, F. Lamareille, M. Kissler-Patig, arXiv:0909.1386 [pdf, other]
Comments: 14 pages and 16 figures

Their UV spectra show ISM lines blue shifted with respect to [O III]. Galactic winds! Although of course I shouldn't be surprised.

MMTF-Halpha and HST-FUV Imaging of the Filamentary Complex in Abell 1795
Michael McDonald, Sylvain Veilleux, arXiv:0909.1554 [ps, pdf, other]
Comments: Accepted for publication in ApJ Letters, 6 pages, 4 figures, 1 table

Investigating the far-IR/radio correlation of star-forming Galaxies to z= 3
N. Seymour, M. Huynh, T. Dwelly, M. Symeonidis, A. Hopkins, I. M. McHardy, M. J. Page, G. Rieke, 2009, MNRAS, 398, 1573
Full Text: HTML, PDF (Size: 751K)

Numerical Astrophysics & Hydrodynamics

Storm fronts over galaxy discs: models of how waves generate extraplanar gas and its anomalous kinematics
Curtis Struck and Daniel C. Smith, 2009, MNRAS, 398, 1069
Full Text: HTML, PDF (Size: 23343K)

The VOISE algorithm: a versatile tool for automatic segmentation of astronomical images
P. Guio and N. Achilleos, 2009, MNRAS, 398, 1254
Full Text: HTML, PDF (Size: 1354K)

Type Ia supernova-driven Galactic bulge wind
Shikui Tang, Q. Daniel Wang, Mordecai-Mark Mac Low, M. Ryan Joung, 2009, MNRAS, 398, 1468
Full Text: HTML, PDF (Size: 18550K)

The fragmentation of expanding shells – I. Limitations of the thin-shell approximation
James E. Dale, Richard Wünsch, Anthony Whitworth, Jan Palouš, 2009, MNRAS, 398, 1537
Full Text: HTML, PDF (Size: 16967K)

Stars, Supernovae and Planets

The relation between the most-massive star and its parental star cluster mass
C. Weidner, P. Kroupa, I. Bonnell, arXiv:0909.1555 [ps, pdf, other]
Comments: 26 pages, 13 figures, 3 tables, accepted for publication in MNRAS

Dust Driven Mass Loss from Carbon Stars as Function of Stellar Parameters - I. A Grid of Solar-metallicity Wind Models
Lars Mattsson, Rurik Wahlin, Susanne Hoefner, arXiv:0909.1513 [ps, pdf, other]
Comments: 27 pages, 11 figures, accepted for publication in Astronomy & Astrophysics

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