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Discovery of the first carbon star in NGC 6822A new photometric technique has been developed for detecting carbon and M stars in distant stellar systems, leading to isolation of carbon-star candidates in a number of Local-Group galaxies. One of the brighter candidates in NGC 6822 has been confirmed spectroscopically; at a distance of approximately 0.5 Mpc, it is the first truly extragalactic carbon star to be positively identified. The star has M(I) = about -5.7 mag, placing it near the upper-luminosity end of known carbon stars in the Magellanic Clouds.
Document ID
19840041514
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
doi:10.1086/184190
Authors
Aaronson, M. (Steward Observatory Tuscon, AZ, United States)
Da Costa, G. S. (Yale University Observatory, New Haven, CT, United States)
Hartigan, P. (Arizona, University Tuscon, AZ, United States)
Mould, J. R. (Palomar Observatory Pasadena, CA, United States)
Norris, J. (Mount Stromlo and Siding Spring Observatories Canberra, Australia)
Stockman, H. S. (Space Telescope Science Institute Baltimore, MD, United States)
Date Acquired
August 12, 2013
Publication Date
February 1, 1984
Publication Information
Publication: Astrophysical Journal, Part 2 - Letters to the Editor
Volume: 277
ISSN: 0004-637X
Subject Category
Astronomy
Report/Patent Number
ISSN: 0004-637X
Accession Number
84A24301
Funding Number(s)
CONTRACT_GRANT: NSF AST-81-17365
CONTRACT_GRANT: NSF AST-83-06139
Distribution Limits
Public
Copyright
Other

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