Near-infrared excess and emission characteristics of classical Be stars

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Classical Be (CBe) stars are fast-rotating emission-line stars associated with infrared excess often attributed to plasma free-free emission. A few with exceptionally large near-infrared excess, namely with (J - H) and (H - K s) both greater than 0.6 mag, however, must be accounted for by thermal emission from circumstellar dust. From 2007 to 2009, spectra of more than 100 CBe stars have been collected. We present some of these spectra and discuss how temporal correlation (or lack of) among spectral features would provide possible diagnosis of the origin of the CBe phenomena.

Original languageEnglish
Title of host publicationActive OB stars
Subtitle of host publicationstructure, evolution, mass loss, and critical limits
PublisherCambridge University Press
Pages404-405
Number of pages2
EditionS272
ISBN (Print)9780521198400
DOIs
StatePublished - Jul 2010

Publication series

NameProceedings of the International Astronomical Union
NumberS272
Volume6
ISSN (Print)1743-9213
ISSN (Electronic)1743-9221

Keywords

  • Be
  • Infrared: stars
  • Stars: early-type
  • Stars: emission-line
  • Stars: evolution
  • Stars: pre-main-sequence

Fingerprint

Dive into the research topics of 'Near-infrared excess and emission characteristics of classical Be stars'. Together they form a unique fingerprint.

Cite this