Optical/IR studies of Be stars in NGC 6834 with emphasis on two specific stars

Mathew, B; Varricatt, W. P; Subramaniam, A; Ashok, N. M; Banerjee, D. P. K

Home
→
IIAP Publications
→
IIAP Publications
→
View Item

dc.contributor.author	Mathew, B
dc.contributor.author	Varricatt, W. P
dc.contributor.author	Subramaniam, A
dc.contributor.author	Ashok, N. M
dc.contributor.author	Banerjee, D. P. K
dc.date.accessioned	2014-10-01T05:01:42Z
dc.date.available	2014-10-01T05:01:42Z
dc.date.issued	2014-09
dc.identifier.citation	Research in Astronomy and Astrophysics, Vol. 14, No. 9, 1173	en
dc.identifier.issn	1674-4527
dc.identifier.uri	http://hdl.handle.net/2248/6653
dc.description	Restricted Access	en
dc.description.sponsorship	We present optical and infrared photometric and spectroscopic studies of two Be stars in the 70–80-Myr-old open cluster NGC 6834. NGC 6834(1) has been reported as a binary from speckle interferometric studies whereas NGC 6834(2) may possibly be a γ Cas-like variable. Infrared photometry and spectroscopy from the United Kingdom Infrared Telescope (UKIRT), and optical data from various facilities are combined with archival data to understand the nature of these candidates. High signal-to-noise near-IR spectra obtained from UKIRT have enabled us to study the optical depth effects in the hydrogen emission lines of these stars. We have explored the spectral classification scheme based on the intensity of emission lines in the H and K bands and contrasted it with the conventional classification based on the intensity of hydrogen and helium absorption lines. This work also presents hitherto unavailable UBV CCD photometry of NGC 6834, from which the evolutionary state of the Be stars is identified.	en
dc.language.iso	en	en
dc.publisher	IOP Publishing	en
dc.relation.uri	http://dx.doi.org/10.1088/1674-4527/14/9/008	en
dc.rights	© IOP Publishing	en
dc.subject	Astrophysics and astroparticles	en
dc.title	Optical/IR studies of Be stars in NGC 6834 with emphasis on two specific stars	en
dc.type	Article	en