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Discovery of the first carbon star in NGC 6822 (1984)

Mould, J. R. ; Norris, J. ; Aaronson, M. ; [et al.]

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Publication Date: 2019-06-28

Description: A 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.

Keywords: ASTRONOMY

Type: Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X); 277; L9-L11

Format: text

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