The Connection between a Lyman Limit System, a very strong OVI Absorber, and Galaxies at z~0.203

Details The Connection between a Lyman Limit System, a very strong OVI Absorber, and Galaxies at z~0.203 The Connection between a Lyman Limit System, a very strong OVI Absorber, and Galaxies at z~0.203

2008-12-22

arxiv.org/abs/0812.4231v1

Astrophys.J.694:734-750,2009

Astronomy and Astrophysics

Astrophysics

Accepted for publication in the ApJ

Scientific paper

10.1088/0004-637X/694/2/734

With a column density log N(OVI) = 14.95+/-0.05, the OVI absorber at z_abs~0.2028 observed toward the QSO PKS0312-77 (z_em=0.223) is the strongest yet detected at z<0.5. At nearly identical redshift (z_abs=0.2026), we also identify a Lyman limit system (LLS, log N(HI)=18.22). Combining FUV and NUV spectra of PKS0312-77 with optical observations of galaxies in the surrounding field (15'x32'), we present an analysis of these absorbers and their connection to galaxies. The observed OI/HI ratio and photoionization modelling of other low ions indicate the metallicity of the LLS is [Z/H]_LLS=-0.6 and that the LLS is nearly 100% photoionized. In contrast, the OVI-bearing gas is collisionally ionized at T~(3-10)x10^5 K as derived from the high-ion ratios and profile broadenings. Our galaxy survey reveals 13 (0.3

Affiliated with

Also associated with

No associations

Rating

The Connection between a Lyman Limit System, a very strong OVI Absorber, and Galaxies at z~0.203 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 The Connection between a Lyman Limit System, a very strong OVI Absorber, and Galaxies at z~0.203, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Connection between a Lyman Limit System, a very strong OVI Absorber, and Galaxies at z~0.203 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-539395