Photoelectric search and spectroscopy for CP2l-stars in open clusters. VII - NGC 1039 and NGC 7092

Details Photoelectric search and spectroscopy for CP2l-stars in open clusters. VII - NGC 1039 and NGC 7092 Photoelectric search and spectroscopy for CP2l-stars in open clusters. VII - NGC 1039 and NGC 7092

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26as...65..497m&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 65, no. 3, Sept. 1986, p. 497-503.

Astronomy and Astrophysics

Astrophysics

5

Astronomical Photometry, Astronomical Spectroscopy, Open Clusters, Electrophotometry, K Lines, Northern Sky, Peculiar Stars

Scientific paper

Delta-a photometry is presented for 49 stars of the medium-to-old northern open clusters NGC 1039 and NGC 7092 yielding two CP2-stars (B37 and B112) in NGC 1039 and one CP2-star (E40a) in NGC 7092. The peculiarity of these three objects was also studied and confirmed by classification dispersion spectroscopy. E40a is thus the only reported weak K-line object in NGC 7092 which is to be regarded as CP2-star. The weak K-line behavior of E5 and E23 which have normal Delta-a values would be more suitably explained as Am-characteristics.

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