Measuring Feedback in Damped Lyman Alpha Systems

Details Measuring Feedback in Damped Lyman Alpha Systems Measuring Feedback in Damped Lyman Alpha Systems

2001-01-13

arxiv.org/abs/astro-ph/0101218v1

Astronomy and Astrophysics

Astrophysics

7 pages, 5 figures, Proceedings of the ESO/ECF/STScI Workshop on Deep Fields

Scientific paper

10.1007/10854354_92

We measure feedback (heating rates) in damped Lyman alpha systems from the cooling rate of the neutral gas. Since cooling occurs through [C II] 158 micron emission, we infer cooling from C II^{*} 1335.7 absorption lines detected with HIRES on the Keck I telescope. The inferred heating rates are about 30 times lower than for the Galaxy ISM. At z = 2.8, the implied star formation rate per unit area is 10^{-2.4+-0.3} solar masses per kpc^{2} per year, and the the star formation rate per unit comoving volume is 10^{-0.8+-0.2} solar masses per Mpc^{3} per year. This is the first measurement of star formation rates in objects likely to be the progenitors of current galaxies.

Affiliated with

Also associated with

No associations

Rating

Measuring Feedback in Damped Lyman Alpha Systems 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 Measuring Feedback in Damped Lyman Alpha Systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measuring Feedback in Damped Lyman Alpha Systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-470703