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The Astrophysical Journal
Article . 1976 . Peer-reviewed
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https://dx.doi.org/10.1086/154...
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The composition of Kapteyn's star and the M subdwarfs.

descriptionPublicationkeyboard_double_arrow_right Article 01 Dec 1976 English Publisher:American Astronomical SocietyJournal:The Astrophysical Journal, volume 210, page 402 (issn: 0004-637X, eissn: 1538-4357, Copyright policy )
Authors: J. R. Mould;

doi: 10.1086/154843

The composition of Kapteyn's star and the M subdwarfs.

Abstract

The metal abundance of the nearby M subdwarf Kapteyn's star is obtained from a 10 A mm/sup -1/ spectrum in the near-infrared. The weighted mean value of (M/H) is -0.55 +- 0.15 (p.e.), confirming an earlier estimate from the strength of the TiO bands. The O/C ratio in Kapteyn's star is within a factor of 2 of the solar value. The effect of pressure broadening in a cool subdwarf atmosphere is to strengthen the lines of the Ca II infrared triplet relative to those of a main-sequence star of equal temperature. (AIP)

  • BIP!
    Impact byBIP!
    selected citations
    These citations are derived from selected sources.
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    		 28
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    		 Top 10%
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    		 Top 10%
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    		 Average
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
28
Top 10%
Top 10%
Average
gold
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