The MG II absorption system in the QSO PKS 2128-12 - A galaxy disc/halo with a radius of 65 KPC

Details The MG II absorption system in the QSO PKS 2128-12 - A galaxy disc/halo with a radius of 65 KPC The MG II absorption system in the QSO PKS 2128-12 - A galaxy disc/halo with a radius of 65 KPC

Jan 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...155l...8b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 155, no. 1, Jan. 1986, p. L8-L11.

Astronomy and Astrophysics

Astrophysics

78

Absorption Spectra, Disk Galaxies, Intergalactic Media, Interstellar Gas, Metallicity, Quasars, Astronomical Spectroscopy, Cosmology, Galactic Structure, Magnesium, Red Shift

Scientific paper

An imaging survey of the field around QSO PKS 2128-12, a QSO with low redshift narrow Mg II absorption line systems, is performed to verify the assumption that sharp metal-rich absorption systems found in the spectra of QSO's arise in intervening materials. The absorber has a redshift, z = 0.4299, that is smaller than that of the QSO emission redshift. The closest galaxy to the QSO, lies 64 kpc north-east of it, and has a redshift equal to that of the absorber. It is gas-rich, and its V and red magnitudes are about those expected for a spiral galaxy. Since the absorbing gas is found to have a small velocity dispersion, fairly high abundances and column densities, and a moderate degree of ionization, it is more likely associated with material in the disc of this galaxy than with a large surrounding halo. This QSO-galaxy pair increases by a factor of four the projected distance from a galaxy center at which absorbing ionized gas has been detected, strongly favoring the assumption of intervening galaxies at least for moderately ionized absorbers.

Affiliated with

Also associated with

No associations

Rating

The MG II absorption system in the QSO PKS 2128-12 - A galaxy disc/halo with a radius of 65 KPC 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 MG II absorption system in the QSO PKS 2128-12 - A galaxy disc/halo with a radius of 65 KPC, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The MG II absorption system in the QSO PKS 2128-12 - A galaxy disc/halo with a radius of 65 KPC will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1843850