Howells, L, Steele, IA, Porter, JM and Etherton, J (2001) A representative sample of Be stars IV. Infrared photometry and the continuum excess. Astronomy and Astrophysics, 369 (1). pp. 99-107. ISSN 0004-6361

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Abstract

We present infra-red (JHK) photometry of 52 isolated Be stars of spectral types O9-B9 and luminosity classes III-V. We describe a new method of reduction, enabling separation of interstellar reddening and circumstellar excess. Using this technique we find that the disc emission makes a maximum contribution to the optical (B-V) colour of a few tenths of a magnitude. We find strong correlations between a range of emission lines (H$\alpha$, Br$\gamma$, Br11, and Br18) from the Be stars' discs, and the circumstellar continuum excesses. We also find that stellar rotation and disc excess are correlated.

Item Type:	Article
Uncontrolled Keywords:	0201 Astronomical And Space Sciences
Subjects:	Q Science > QB Astronomy Q Science > QC Physics
Divisions:	Astrophysics Research Institute
Publisher:	EDP Sciences
Related URLs:	http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000168195800013&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=7f77ca1697db64ccb27a8011c7ced90d
Date Deposited:	19 Jan 2017 09:48
Last Modified:	04 Sep 2021 12:40
DOI or ID number:	10.1051/0004-6361:20010031
URI:	https://researchonline.ljmu.ac.uk/id/eprint/3940

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