Skip to content
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
"Dark" GRB 080325 in a dusty massive galaxy at z ∼ 2
Astrophysical Journal, Volume 719, No. 1, Year 2010
Notification
URL copied to clipboard!
Description
We present optical and near-infrared observations of Swift GRB 080325 classified as a "dark gamma-ray burst (GRB)." Near-infrared observations with Subaru/MOIRCS provided a clear detection of afterglow in the Ks band, although no optical counterpart was reported. The flux ratio of rest-wavelength optical to X-ray bands of the afterglow indicates that the dust extinction along the line of sight to the afterglow is AV = 2.7-10 mag. This large extinction is probably the major reason for the optical faintness of GRB 080325. The J - Ks color of the host galaxy, (J - Ks = 1.3 in AB magnitude), is significantly redder than those for typical GRB hosts previously identified. In addition to J and Ks bands, optical images in B, Rc, I ′, and z ′ bands with Subaru/Suprime- Cam were obtained at about 1 year after the burst, and a photometric redshift of the host is estimated to be zphoto = 1.9. The host luminosity is comparable to L * at z ∼ 2 in contrast to the sub-L * property of typical GRB hosts at lower redshifts. The best-fit stellar population synthesis model for the host shows that the red nature of the host is attributed to a large dust extinction (AV = 0.8 mag), and that the host galaxy is massive (M * = 7.0 × 1010 M⊙), which makes it one of the most massive GRB hosts yet identified. By assuming that the mass-metallicity relation for star-forming galaxies at z ∼ 2 is applicable for the GRB host, this large stellar mass suggests the high-metallicity environment around GRB 080325, consistent with inferred large extinction. © 2010. The American Astronomical Society. All rights reserved.
Authors & Co-Authors
Hashimoto, Tetsuya
Japan, Kyoto
Kyoto University
Ohta, Kouji
Japan, Kyoto
Kyoto University
Aoki, Kentaro
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Tanaka, Ichi
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Kawai, Nobuyuki
Japan, Tokyo
Tokyo Institute of Technology
Aoki, Wako
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Furusawa, Hisanori
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Hattori, Takashi G.
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Kawabata, Koji S.
Japan, Higashihiroshima
Hiroshima University
Kobayashi, Naoto
Japan, Tokyo
The University of Tokyo
Niino, Yuu
Japan, Kyoto
Kyoto University
Nomoto, Ken'Ichi N.Ichi
Japan, Tokyo
The University of Tokyo
Pyo, Tae-soo
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Sakamoto, Takanori
United States, Greenbelt
Nasa Goddard Space Flight Center
Sekiguchi, Kazuhiro
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Shirasaki, Yuji
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Suzuki, Motoko
Japan, Sagamihara
Jaxa Institute of Space and Astronautical Science
Tajitsu, Akito
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Tamagawa, Tohru
Japan, Tokyo
Tokyo University of Science
Japan, Wako
Riken the Institute of Physical and Chemical Research
Totani, Tomonori
Japan, Kyoto
Kyoto University
Watanabe, Juni'chi Ichi
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Yoshida, Atsumasaz K.
Japan, Tokyo
Aoyama Gakuin University
Statistics
Citations: 23
Authors: 22
Affiliations: 11
Identifiers
Doi:
10.1088/0004-637X/719/1/378
ISSN:
0004637X
Study Design
Cross Sectional Study