Spectroscopy of Quasar Candidates Found With Slitless Spectroscopy.II. Six Northern Fields

Details Spectroscopy of Quasar Candidates Found With Slitless Spectroscopy.II. Six Northern Fields Spectroscopy of Quasar Candidates Found With Slitless Spectroscopy.II. Six Northern Fields

Apr 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aj....111.1456b&link_type=abstract

Astronomical Journal v.111, p.1456

Astronomy and Astrophysics

Astronomy

6

Quasars: Absorption Lines, Galaxies: Clustering

Scientific paper

We are continuing the analysis of QSO candidates selected from objective spectra obtained with the CFHT. This paper describes six northern fields observed with the fiber-fed RC spectrograph on the Mayall Telescope. We obtained spectra at low resolution to confirm the QSOs and at higher resolution to find absorption-line systems. We found 61 new QSOs and confirmed 17 more which already had been reported in the region of the north galactic pole. Our spectra showed that seven of those previously known require significant changes to the published redshift, and one is a galaxy. There are three QSO pairs with comoving separations less than 10 (100/H_0_) Mpc, if q_0_ = 1/2. This number is only a factor 2 more than expected in a random sample, but two of these pairs have projected separations on the sky of 0.48 (100/H_0_) and 0.41 (100/H_0_) Mpc so that each could belong to a cluster with internal velocities around 1000 km s^-1^. We found absorption lines in 36 QSOs including 3 which we have classified as broad-absorption-line QSOs. Line locking by A1 III or C IV absorption doublets occurs in two or three cases. The paper lists 30 new emission-line galaxies, 4 of which also have absorption lines, and 4 galaxies with only absorption lines. We found 5 white dwarfs, including one with broad absorption lines around 4270 and 4900 A in place of the usual Balmer series. An appendix of 62 identified stars includes 6 B stars and one O star. If we assume that the O star is a subdwarf with M_j_ = 0.0. It must be 47 kpc above the galactic plane.

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