Computer Science
Scientific paper
Aug 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008sptz.prop..492s&link_type=abstract
Spitzer Proposal ID #492
Computer Science
Scientific paper
We propose to obtain IRAC and MIPS observations of seven prototypes of a recently discovered class of star-forming galaxies with 0.29 < z < 0.41. Originally thought to be intermediate-redshift Seyfert 2 galaxies when first discovered in the KPNO International Spectroscopic Survey (KISS), recent optical spectroscopy in the far red has revealed these objects to be very metal-poor star-forming galaxies. These galaxies follow a luminosity-metallicity (L-Z) relation that parallels the one defined by low-redshift galaxies, but is offset by a factor of 10 to lower abundances! The amount of chemical and/or luminosity evolution required to place these galaxies on the local L-Z relation is extreme. Either they are late-forming massive systems, which would challenge the current paradigm of galaxy formation, or they represent intense starbursts in dwarf-dwarf mergers. In either case, these objects represent an extreme stage of galaxy evolution taking place at relatively low redshift. In order to arrive at a more complete understanding of the nature of these objects, we are applying now to DDT in order to capture a minimum of FIR information before Spitzer runs out of He coolant. We stress that the nature of these objects has only recently been recognized, so that it was not possible to apply to observe them during the most recent call for proposals.
Finn Rose
Helou George
Salzer John Joseph
No associations
LandOfFree
An Extremely Metal-Poor Population of L* Galaxies at z~0.35 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 An Extremely Metal-Poor Population of L* Galaxies at z~0.35, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and An Extremely Metal-Poor Population of L* Galaxies at z~0.35 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1064349