S-154 in the Large Magellanic Cloud - Spectral evolution from a luminous Fe II variable to a symbiotic-like star

Autor:	I. R. Tuohy, Ron Remillard, David A. Schwartz, Roger Brissenden, E. Rosenthal, D. A. H. Buckley
Rok vydání:	1992
Předmět:	Radial velocity Physics Stars Space and Planetary Science Binary star Astronomy Astronomy and Astrophysics Astrophysics Variable star Light curve Large Magellanic Cloud Orbital period Stellar evolution
Zdroj:	The Astrophysical Journal. 396:668
ISSN:	1538-4357 0004-637X
DOI:	10.1086/171747
Popis:	The evolution of the emission-line Star S-154, between February and December 1988, from a low-excitation 'Fe II star' into a high-excitation state that resembles symbiotic stars, is traced. It is inferred that the spectral type of central stars do not always dominate the physical conditions in the circumstellar material and thereby determine the nebular classification. The membership of S-154 in the LMC was confirmed with a radial velocity measurement of +274 km/s. The historical light curve (1880-1990) obtained from 346 photograph plates of the Harvard Plate Library exhibits about 4 mag of variations, with an MB range of -6 to -2. No evidence was found for coherent modulations that would represent the orbital period of a symbiotic binary.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::acb409c7fab4c4a1f158417312625c6c https://doi.org/10.1086/171747 Zobrazit plný text záznamu