THE AFTERGLOW AND EARLY-TYPE HOST GALAXY OF THE SHORT GRB 150101B ATz= 0.1343

Authors :: Raffaella Margutti
Alexander J. van der Horst
Nial R. Tanvir
Tanmoy Laskar
Jens Hjorth
Dennis Zaritsky
Derek B. Fox
Ryan Chornock
Benjamin J. Shappee
Nathan Smith
Ragnhild Lunnan
Edo Berger
Peter K. Blanchard
Peter Milne
Klaas Wiersema
Andrew J. Levan
Wen-fai Fong
Source :: The Astrophysical Journal. 833:151
Publication Year :: 2016
Publisher :: American Astronomical Society, 2016.
Abstract: We present the discovery of the X-ray and optical afterglows of the short-duration GRB 150101B, pinpointing the event to an early-type host galaxy at z=0.1343 +/- 0.0030. This makes GRB 150101B the most nearby short GRB with an early-type host galaxy discovered to date. Fitting the spectral energy distribution of the host galaxy results in an inferred stellar mass of ~7x10^10 M_sol, stellar population age of ~2-2.5 Gyr, and star formation rate of 9 deg. Using observations extending to ~30 days, we place upper limits of<br />Comment: 13 pages, 7 figures, 2 tables. Submitted to ApJ