A search for H I and OH absorption in high redshift quasars

Details A search for H I and OH absorption in high redshift quasars A search for H I and OH absorption in high redshift quasars

Apr 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...145..479d&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 145, no. 2, April 1985, p. 479-481. Research supported by the Stichting Astron

Astronomy and Astrophysics

Astronomy

3

Centimeter Waves, Hydrogen Clouds, Hydroxyl Emission, Quasars, Radio Astronomy, Red Shift, Absorption Spectra, Spectrum Analysis

Scientific paper

Using the Westerbork synthesis radio telescope at 49-cm wavelength and at 0.6 GHz, a search for redshifted H I and OH absorption in high redshift quasars is made. The investigation is carried out near redshifts of 1.33 (H I) and 1.74 (OH), which is close to the emission-line redshifts of most of the objects observed. An investigation of seven quasars, 0202 172, 1331 + 170, 1356 + 022, 1615 + 028, 1756 + 237, 2005 + 403, and 2158 + 101, indicates that no absorption is detected in any of the objects. Upper limits of 1 to 2 percent of this absorption features are obtained and the results are discussed.

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