Crowding on the sight line to the QSO PHL 1226 - The nearby galaxy IC 1746 and a galaxy cluster at Z = 0.16

Details Crowding on the sight line to the QSO PHL 1226 - The nearby galaxy IC 1746 and a galaxy cluster at Z = 0.16 Crowding on the sight line to the QSO PHL 1226 - The nearby galaxy IC 1746 and a galaxy cluster at Z = 0.16

Feb 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...191....1b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 191, no. 1, Feb. 1988, p. 1-9.

Astronomy and Astrophysics

Astrophysics

22

Absorption Spectra, Cosmology, Galactic Clusters, Line Of Sight, Quasars, Red Shift, Astronomical Spectroscopy, Elliptical Galaxies, Halos, High Resolution, Ultraviolet Spectroscopy

Scientific paper

The 17th magnitude QSO PHL 1226 (zem = 0.404) is close in the sky to several low redshift galaxies. The brightest of these, IC 1746 is an edge-on spiral 55arcsec.4 or 28 h-150kpc away from the line of sight at z = 0.01760±0.0002. A weak absorption line in the QSO spectrum is identified as Ca II K at zabs = 0.01871±0.00005, only 310±20 km s-1 higher than the galaxy central velocity. Two other galaxies were found to be at z = 0.1592±0.0020 and 0.1597±0.0010, and only 24 and 41 h-150kpc from the QSO line of sight. The authors subsequently discovered a strong, saturated Mg II absorption line doublet at zabs = 0.1602±0.0001 in the QSO spectrum, which may be associated with either of these galaxies. The latter appear to belong to a cluster of galaxies whose projected density is 1.8 galaxies per arcmin2.

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