Hatsukade 2007 寻找GRB 980425宿主星系的CO线

主要内容:
只给出了上限。

精彩摘抄:


文章信息:
A Search for CO(J=3-2) Emission from the Host Galaxy of GRB 980425 with the Atacama Submillimeter Telescope Experiment

Authors: Bunyo Hatsukade, Kotaro Kohno, Akira Endo, Tomoka Tosaki, Kouji Ohta, Seiichi Sakamoto, Nobuyuki Kawai, Juan R. Cortes, Kouichiro Nakanishi, Takeshi Okuda, Kazuyuki Muraoka, Takeshi Sakai, Paul M. Vreeswijk, Hajime Ezawa, Nobuyuki Yamaguchi, Kazuhisa Kamegai, Ryohei Kawabe

(Submitted on 27 Apr 2007)

Abstract: We report on a deep search for CO(J=3-2) line emission from the host galaxy of GRB 980425 with the Atacama Submillimeter Telescope Experiment (ASTE). We observed five points of the galaxy covering the entire region. After combining all of the spectra, we obtained a global spectrum with the rms noise level of 3.3 mK in T_mb scale at a velocity resolution of 10 km s^-1. No significant emission was detected, though we find a marginal emission feature in the velocity range corresponding to the redshift of the galaxy. We derive 3 sigma upper limits on the global properties: the velocity-integrated CO(3-2) intensity of I_CO(3-2) < x_co =" 5.0">

Comments:

7 pages, 4 figures

Subjects:

Astrophysics (astro-ph)

Journal reference:

PASJ, 2007, 59, 67-72

Cite as:

arXiv:0704.3654v1 [astro-ph]