HI 21cm absoprtion in two low redshift damped Ly-alpha systems

Details HI 21cm absoprtion in two low redshift damped Ly-alpha systems HI 21cm absoprtion in two low redshift damped Ly-alpha systems

1998-03-20

arxiv.org/abs/astro-ph/9803243v1

Astronomy and Astrophysics

Astrophysics

10 pages incl. 4 eps figures, accepted by AJ

Scientific paper

10.1086/300422

We report the discovery of two low redshift HI 21cm absorbers, one at z = 0.2212 towards the z_{em} = 0.630 quasar OI 363 (B0738+313), and the other at z = 0.3127 towards PKS B1127-145 (z_{em} = 1.187). Both were found during a survey of MgII selected systems at redshifts 0.2 < z < 1 using the new UHF-high system at the Westerbork Synthesis Radio Telescope (WSRT). New HST/FOS observations also identify both systems as damped Ly-alpha (DLa) absorbers. By comparing the column density from the DLa line with that from the HI 21cm line, we calculate the spin temperature, and find that T_s is approximately 1000 K for both of these low redshift absorbers. We briefly discuss some implications of this result.

Affiliated with

Also associated with

No associations

Rating

HI 21cm absoprtion in two low redshift damped Ly-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 HI 21cm absoprtion in two low redshift damped Ly-alpha systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and HI 21cm absoprtion in two low redshift damped Ly-alpha systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-343852