On the Existence of Bright (Mbol < –6) Upper AGB Stars

Autor:	Peter R. Wood, S. M. G. Hughes
Rok vydání:	1987
Předmět:	Physics Photometry (optics) Stars Apparent magnitude Stellar mass Space and Planetary Science Asymptotic giant branch Astronomy and Astrophysics Astrophysics Schmidt camera Stellar classification Spectral line
Zdroj:	Publications of the Astronomical Society of Australia. 7:147-150
ISSN:	1448-6083 1323-3580
DOI:	10.1017/s1323358000022116
Popis:	A photometric survey of a central region of the LMC has been undertaken to obtain a magnitude and colour limited sample of bright asymptotic giant branch (AGB) stars; the stars were selected from V and Ic plates taken by the UK Schmidt Telescope Unit (UKSTU) at Coonabarabran. Infrared JHK photometry has been obtained for all the stars in the sample in order to determine bolometric magnitudes, and spectra have been obtained for most of the stars to obtain spectral types. Stars in the sample have bolometric magnitudes up to the AGB limit of Mbol ∼ – 7.1, and many of the stars show evidence for dredge-up of carbon and s-process elements during helium shell flashes. A bolometric luminosity function has been constructed and its behaviour is discussed in terms of possible mass loss scenarios.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::317609729fe292cce63118755e53cc3e https://doi.org/10.1017/s1323358000022116 Zobrazit plný text záznamu