Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980mnras.192..545w&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 192, Aug. 1980, p. 545-554. Research supported by the Australian Resear
Astronomy and Astrophysics
Astronomy
14
Optical Emission Spectroscopy, Quasars, Radio Sources (Astronomy), Stellar Magnitude, Stellar Radiation, Stellar Spectrophotometry, Light Emission, Lyman Alpha Radiation, Radiant Flux Density, Radio Astronomy, Red Shift, Sky Surveys (Astronomy), Spectral Line Width
Scientific paper
Details of the optical spectra are given for 14 QSOs identified with radio sources from the Molonglo Deep Survey (MDS) which consists of a narrow strip at sigma = -20 deg and includes sources with 408 MHz flux densities between 88 mJy and 1 Jy. The spectra have been obtained with the Image Dissector Scanner on the 3.9-m Anglo-Australian Telescope. Analysis of the spectra has been aimed at extracting as much quantitative information as possible with special attention being given to the estimation of magnitudes from both IDS data and the Palomar Sky Survey. Several interesting individual objects are discussed and attention is drawn to the wide range of equivalent widths for Ly alpha. There is evidence for a trend towards fainter optical magnitudes and higher redshifts for the weak radio sources of the MDS.
Hunstead Richard W.
Murdoch Hugh S.
White Graeme L.
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