Svensson 2010 超新星和伽马暴的宿主星系

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对他们的宿主星系选了几十个进行了比较。

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Title:		The host galaxies of core-collapse supernovae and gamma-ray bursts
Authors:		Svensson, K. M.; Levan, A. J.; Tanvir, N. R.; Fruchter, A. S.; Strolger, L.-G.
Affiliation:		AA(Department of Physics, University of Warwick, Coventry CV4 7AL), AB(Department of Physics, University of Warwick, Coventry CV4 7AL), AC(Department of Physics and Astronomy, University of Leicester, University Road, Leicester LE1 7RH), AD(Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA), AE(Department of Physics and Astronomy, Western Kentucky University, 1906 College Heights Blvd 11077, Bowling Green, KY 42101-1077, USA)
Publication:		Monthly Notices of the Royal Astronomical Society, Volume 405, Issue 1, pp. 57-76. (MNRAS Homepage)
Publication Date:		06/2010
Origin:		WILEY
MNRAS Keywords:		gamma-ray burst: general, supernovae: general, galaxies: evolution, galaxies: fundamental parameters, cosmology: observations
Abstract Copyright:		(c) Journal compilation © 2010 RAS
DOI:		10.1111/j.1365-2966.2010.16442.x
Bibliographic Code:		2010MNRAS.405...57S

Abstract

We present a comparative study of the galactic and small-scale environments of gamma-ray bursts (GRBs) and core-collapse supernovae (CCSNe). We use a sample of 34 GRB hosts at z < 1.2, and a comparison sample of 58 supernova hosts located within the Great Observatories Origins Deep Survey footprint. We fit template spectra to the available photometric data, which span the range 0.45-24μm, and extract absolute magnitudes, stellar masses and star formation rates from the resulting fits. Our results broadly corroborate previous findings, but offer significant enhancements in spectral coverage and a factor 2-3 increase in sample size. Specifically, we find that CCSNe occur frequently in massive spirals (spiral fraction ~50 per cent). In contrast GRBs occur in small, relatively low mass galaxies with high specific and surface star formation rates, and have a spiral fraction of only ~10 per cent. A comparison of the rest-frame absolute magnitudes of the GRB and CCSN sample is less conclusive than found in previous work, suggesting that while GRB hosts are typically both smaller and bluer than those of CCSN their total blue light luminosities are only slightly lower. We suggest this is likely due to rapid periods of intensified star formation activity, as indicated by the high specific SFRs, which both create the GRB progenitors and briefly significantly enhance the host galaxy blue luminosity. Finally, our analysis of local environments of GRBs and CCSNe shows that GRBs are highly concentrated on their host light, and further occur in regions of higher absolute surface luminosity than CCSNe.

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