Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aj....108.2046s&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 108, no. 6, p. 2046-2053
Astronomy and Astrophysics
Astronomy
89
Absorption Spectra, Infrared Astronomy, Infrared Spectra, Lyman Alpha Radiation, Occultation, Quasars, Red Shift, Visible Spectrum, Abundance, Elliptical Galaxies, Faraday Effect, Galactic Clusters, Imagery, Metallicity, Molecular Gases
Scientific paper
By observing the fields of the QSOs 3C 286 and PKS 1229-021 in the I and Ks bands under good seeing conditions, we have resolved faint galaxy images close to the QSO sight lines. The sizes, magnitudes, and colors of these objects suggest that they are the galaxies producing 21 cm absorption at zabs = 0.6922 and 0.3950 in the spectra of 3C 286 and PKS 1229-021, respectively. The absorber in front of 3C 286 appears to be a low surface brightness galaxy; this finding provides a natural explanation for the low metallicity and lack of molecular gas in this system at an epoch when the Milky Way had already reached near-solar abundances. The galaxy we identify as the zabs = 0.3950 absorber in PKS 1229-021 is close to the position previously inferred from the character of the metal line absorption and Faraday rotation. In this field we also find several very red objects which we suspect to be elliptical galaxies in a group or cluster at z = 1.042, the redshift of the QSO.
Dickinson Mark
Persson Eric S.
Pettini Max
Steidel Charles C.
No associations
LandOfFree
Imaging of two damped Lyman Alpha absorbers at intermediate redshifts 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 Imaging of two damped Lyman Alpha absorbers at intermediate redshifts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Imaging of two damped Lyman Alpha absorbers at intermediate redshifts will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1325277