Multiwavelength observations of the Be/X-ray binary 4U1145-619

Autor:	Pablo Reig, Juan Fabregat, David A. H. Buckley, J. B. Stevens, Iain A. Steele, M. J. Coe
Rok vydání:	1997
Předmět:	Physics Infrared excess Infrared Be star Astrophysics (astro-ph) X-ray binary Astronomy Balmer series FOS: Physical sciences Astronomy and Astrophysics Astrophysics Spectral line symbols.namesake Space and Planetary Science symbols H-alpha Binary system
Zdroj:	ResearcherID
DOI:	10.48550/arxiv.astro-ph/9706110
Popis:	We report optical and infrared observations of the massive X-ray binary system 4U1145-619 (V801 Cen) which show that the circumstellar disc of the Be star component is in decline. Infrared J,H,K,L magnitudes of V801Cen have been monitored from 1993 March to 1996 April. H alpha spectra have been obtained throughout the same period. We find that both the infrared excess and the Balmer emission have been in decline throughout the period of observations. A 13 year optical and X-ray history of the source has been collated, revealing a possible correlation between the optical and X-ray activity. In addition, we have used u,v,b,y,beta indices, corrected for both circumstellar and interstellar effects, to calculate the physical parameters of the underlying B star. Comment: 8 pages postscript. Accepted by MNRAS
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::044e45cc78b32a61bd4030b0ed93ee3d Zobrazit plný text záznamu