GOODS Spitzer/IRAC Observations of High-z Galaxies

Details GOODS Spitzer/IRAC Observations of High-z Galaxies GOODS Spitzer/IRAC Observations of High-z Galaxies

Mar 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aspc..381..317y&link_type=abstract

The Second Annual Spitzer Science Center Conference: Infrared Diagnostics of Galaxy Evolution. ASP Conference Series, Vol. 381,

Other

Scientific paper

The Great Observatory Origins Deep Survey (GOODS) Spitzer Legacy Program has obtained ˜ 23.2 hours of IRAC observations in the HDF-N and the CDF-S (˜ 330 arcmin^2 in total), among which a sub-area of ˜ 50 arcmin^2 in the HDF-N has been observed to a depth of ˜ 72 hours. Utilizing these deep IRAC data, we study the stellar masses and star formation histories of galaxies at z≈ 6. While some of the i-band dropouts selected by the GOODS ACS observations are detected by these IRAC observations, some of them are not. We find that the i_{775}-dropouts in the IRAC-detected sample typically have stellar masses of ˜ 10^{10}M_&sun; and ages of a few hundred million years old, consistent with our earlier results based on a smaller sample in the HUDF. On the other hand, the i-dropouts in the IRAC-invisible sample are significantly younger and less massive. Using these results, we derive the lower limit of the global stellar density at z≈ 6, and find that at least 0.2-1.1% of the stellar mass in our local universe has been locked in stars by z≈ 6.

Affiliated with

Also associated with

No associations

Rating

GOODS Spitzer/IRAC Observations of High-z Galaxies 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 GOODS Spitzer/IRAC Observations of High-z Galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and GOODS Spitzer/IRAC Observations of High-z Galaxies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-952566