Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-08-29
Astrophys.J.672:817-824, 2008
Astronomy and Astrophysics
Astrophysics
9 pages, 2 figures, submitted to ApJ, for SED templates, see http://archive.dark-cosmology.dk/
Scientific paper
10.1086/523891
We present detailed fits of the spectral energy distributions (SEDs) of four submillimeter (submm) galaxies selected by the presence of a gamma-ray burst (GRB) event (GRBs 980703, 000210, 000418 and 010222). These faint ~3 mJy submm emitters at redshift ~1 are characterized by an unusual combination of long- and short-wavelength properties, namely enhanced submm and/or radio emission combined with optical faintness and blue colors. We exclude an active galactic nucleus as the source of long-wavelength emission. From the SED fits we conclude that the four galaxies are young (ages <2 Gyr), highly starforming (star formation rates ~150 MSun/yr), low-mass (stellar masses ~10^10 MSun) and dusty (dust masses ~3x10^8 MSun). Their high dust temperatures (Td>45 K) indicate that GRB host galaxies are hotter, younger, and less massive counterparts to submm-selected galaxies detected so far. Future facilities like Herschel, JCMT/SCUBA-2 and ALMA will test this hypothesis enabling measurement of dust temperatures of fainter GRB-selected galaxies.
Castro Cerón José María
Hjorth Jens
Michałowski Michał J.
Watson Dan
No associations
LandOfFree
The nature of GRB-selected submillimeter galaxies: hot and young does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The nature of GRB-selected submillimeter galaxies: hot and young, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The nature of GRB-selected submillimeter galaxies: hot and young will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-239799