Integrated spectral types from image-tube spectra for 90 Galactic globular clusters

Details Integrated spectral types from image-tube spectra for 90 Galactic globular clusters Integrated spectral types from image-tube spectra for 90 Galactic globular clusters

Jun 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985pasp...97..465h&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 97, June 1985, p. 465-518. Research supported by the Un

Astronomy and Astrophysics

Astronomy

101

Astronomical Spectroscopy, Globular Clusters, Magellanic Clouds, Milky Way Galaxy, Abundance, Astronomical Catalogs, Classifications, Galactic Bulge, Metallicity, Regression Analysis, Stellar Spectra

Scientific paper

One-dimensional spectral classifications for 90 Galactic globular clusters and NGC 121 in the Small Magellanic Cloud are compared with previous observations. The data base consists of about 260 image tube spectra at 120 A/mm. A total of twenty-three clusters, many of them lying near the Galactic nuclear bulge are classified for the first time. Large uncertainties were found in the (B-V) and E(B-V) spectra of Kukarin (1974). Tight correlations were obtained between the present metallicity types and the abundance scale for metal-rich globular clusters. Linear correlations between spectral types and metallicities are derived based on the scale in which 47 Tuc and M71 have an Fe/H ratio of more than -0.7 but less than about -0.5. Extensive tables are given summarizing the spectral classifications, photometric indices, and metallicity values for the Galactic globular clusters.

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