Mathematics – Logic
Scientific paper
Jul 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007hst..prop11135k&link_type=abstract
HST Proposal ID #11135. Cycle 16
Mathematics
Logic
Scientific paper
To obtain a full spectroscopic census of the universe at z~2.5 we have conducted a near-infrared spectroscopic survey for K-selected galaxies. We found that, in contrast to the local universe, massive high-redshift galaxies span a wide range of properties, varying from dusty star burst to "red and dead" galaxies. This may imply that massive galaxies transform from star-forming to quiescent galaxies in the targeted redshift range. To understand whether the 9 quiescent galaxies in our sample are the progenitors of local elliptical, we are observing them in the current cycle with NIC2. For cycle 16 we propose to complete our sample of massive z~2.5 galaxies and image the remaining 10 galaxies, which all have emission lines. Based on emission-line diagnostics, 6 of these galaxies are identified as star-forming objects and 4 harbor an active galactic nucleus. The goals are to 1 determine whether star formation in massive z~2.5 galaxies takes place in disks or is triggered by merger activity, 2 derive the contribution of AGNs to the rest-frame optical emission, and 3 test whether the morphologies are consistent with the idea that the star-forming galaxies, AGNs, and quiescent galaxies represent subsequent phases of an evolutionary sequence. The combination of both programs will provide the first morphological study of a spectroscopically confirmed massive galaxy sample at z~2.5.;
No associations
LandOfFree
Extreme makeovers: Tracing the transformation of massive galaxies at z~2.5 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 Extreme makeovers: Tracing the transformation of massive galaxies at z~2.5, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extreme makeovers: Tracing the transformation of massive galaxies at z~2.5 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-780606