Spectroscopic CCD Surveys for Quasars at Large Redshift. V. The Palomar Scan GRISM Survey Catalog

Details Spectroscopic CCD Surveys for Quasars at Large Redshift. V. The Palomar Scan GRISM Survey Catalog Spectroscopic CCD Surveys for Quasars at Large Redshift. V. The Palomar Scan GRISM Survey Catalog

Jan 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aj....117...40s&link_type=abstract

The Astronomical Journal, Volume 117, Issue 1, pp. 40-55.

Astronomy and Astrophysics

Astronomy

4

Galaxies: Quasars: Emission Lines, Galaxies: Quasars: General

Scientific paper

This paper presents the catalog of objects found in the Palomar Scan Grism Survey (PSGS). The survey consists of eight narrow (~8.5′ wide) strips of sky; the total effective area is 1.10 deg^2. Low-resolution slitless spectra, covering the wavelength range 4400-7500 Å, were obtained for approximately 97,000 objects. The wavelength- and flux-calibrated spectra were searched for emission lines with an automatic software algorithm. A total of 192 emission features in the grism data satisfied our signal-to-noise ratio and equivalent-width selection criteria; subsequent slit spectroscopy of the candidates confirmed the existence of 111 lines (96 different objects). Six groups of emission lines were detected in the survey: Lyalpha + N V, C IV, C III], Mg II, Hβ + [O III], and Hα + [S II]. Slightly more than half of the confirmed lines are low-redshift (z<0.45) emission-line galaxies; nine objects are high-redshift quasars (z>2.7) detected via their Lyalpha + N V emission lines. Two unusual emission-line objects were found as part of the survey; one is a late-type star (M9.5) with very strong Balmer emission, the other is an unresolved source with numerous broad emission lines and a strong absorption line.

Affiliated with

Also associated with

No associations

Rating

Spectroscopic CCD Surveys for Quasars at Large Redshift. V. The Palomar Scan GRISM Survey Catalog 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 Spectroscopic CCD Surveys for Quasars at Large Redshift. V. The Palomar Scan GRISM Survey Catalog, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectroscopic CCD Surveys for Quasars at Large Redshift. V. The Palomar Scan GRISM Survey Catalog will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1189271