EXPORT: Near-IR observations of Vega-type and pre-main sequence stars

Authors
Eiroa, C Garzon, F Alberdi, A de Winter, D Ferlet, R Grady, CA Cameron, A Davies, JK Deeg, HJ Harris, AW Horne, K Merin, B Miranda, LF Montesinos, B Mora, A Oudmaijer, R Palacios, J Penny, A Quirrenbach, A Rauer, H Schneider, J Solano, E Tsapras, Y Wesselius, PR
Citation
C. Eiroa et al., EXPORT: Near-IR observations of Vega-type and pre-main sequence stars, ASTRON ASTR, 365(2), 2001, pp. 110-114
Citations number
37
Categorie Soggetti
Space Sciences
Journal title
ASTRONOMY AND ASTROPHYSICS
ISSN journal
00046361 → ACNP
Volume
365
Issue
2
Year of publication
2001
Pages
110 - 114
Database
ISI
SICI code
0004-6361(200101)365:2<110:ENOOVA>2.0.ZU;2-I
Abstract
We present near-IR JHK photometric data of a sample of 58 main-sequence, ma inly Vega-type, and pre-main sequence stars. The data were taken during fou r observing runs ill the period May 1998 to January 1999 and form part of a coordinated effort with simultaneous optical spectroscopy and photo-polari metry. The near-IR colors of the MS stars correspond in most cases to photo spheric colors, although noticeable reddening is present towards a fen obje cts, and these stars show no brightness variability within the observationa l errors. On the other hand, the PMS stars show near-IR excesses and variab ility consistent with previous data.