A high-resolution optical survey of interstellar absorption lines toward globular clusters and extragalactic objects. I - Basic data

Details A high-resolution optical survey of interstellar absorption lines toward globular clusters and extragalactic objects. I - Basic data A high-resolution optical survey of interstellar absorption lines toward globular clusters and extragalactic objects. I - Basic data

Dec 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...242..976s&link_type=abstract

Astrophysical Journal, Part 1, vol. 242, Dec. 15, 1980, p. 976-986.

Astronomy and Astrophysics

Astrophysics

37

Absorption Spectra, Calcium, Globular Clusters, Halos, Interstellar Gas, Sodium, Galactic Nuclei, Magellanic Clouds, Quasars, Seyfert Galaxies, Spectrographs, Supergiant Stars

Scientific paper

We present the results of an investigation into the existence of gas in the halo of our own and neighboring galaxies, by means of a study at high resolution of interstellar sodium and calcium lines in the lines of sight to globular cluster cores, individual Magellanic Cloud supergiants, and the nuclei of Seyfert galaxies. A preliminary discussion of the number density of halo components gives a number of 0.5 per 100 kpc above our sensitivity limit, comparable to, but somewhat higher than, is indicated by 21 cm studies of QSO-galaxy pairs.

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