Optical interstellar lines in southern supergiants.
نویسندگان
چکیده
منابع مشابه
Interstellar CH+ in southern OB associations
Optical absorption line observations of interstellar CH+ andCHare presented towards the southernOBassociations CMa OB1,NGC 2439,Vela OB1,NGC 4755, andCen OB1.A total of 5–11 stars per associationwere observed, with visual extinctions ranging fromAV = 0.5–4.5 mag. The derived CH+ and CH velocities agree within the measurement errors. Towards a particular association, the CH+ column densityN (CH+...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 1975
ISSN: 0004-637X,1538-4357
DOI: 10.1086/153491