Photometry and spectroscopy of the open cluster NGC 2112

Details Photometry and spectroscopy of the open cluster NGC 2112 Photometry and spectroscopy of the open cluster NGC 2112

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26as...81..225r&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 81, no. 2, Dec. 1989, p. 225-236. Research supported by Univ

Astronomy and Astrophysics

Astrophysics

8

Hertzsprung-Russell Diagram, Open Clusters, Stellar Spectra, Stellar Spectrophotometry, Companion Stars, Interstellar Extinction, Metallic Stars, Star Clusters

Scientific paper

Photometric and spectroscopic data are presented for the open cluster NGC 2112. An age between 3 and 5 Gyr is obtained, depending on metallicity. Stromgren data indicate a low value of about -1 dex, while G-band strengths of probable members seem to be weaker than those of stars in M 67, NGC 2243, Mel 66, which serve as comparison objects. Such a combination of age and metallicity is unique among star clusters. Spectral classification of several stars leads to a reddening value of E (B-V) = 0.6. The distance of NGC 2112 is of the order of 700-800 pc.

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