Abstract
We present near-IR JHK photometric data of a sample of 58 main-sequence, mainly Vega-type, and pre-main sequence stars. The data were taken during four observing runs ill the period May 1998 to January 1999 and form part of a coordinated effort with simultaneous optical spectroscopy and photo-polarimetry. The near-IR colors of the MS stars correspond in most cases to photospheric colors, although noticeable reddening is present towards a fen objects, and these stars show no brightness variability within the observational errors. On the other hand, the PMS stars show near-IR excesses and variability consistent with previous data.
Original language | English |
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Pages (from-to) | 110-114 |
Number of pages | 5 |
Journal | Astronomy & Astrophysics |
Volume | 365 |
Publication status | Published - Jan 2001 |
Keywords
- stars : emission-line, Be
- stars : pre-main sequence
- stars : variable : general
- infrared : stars
- YOUNG STELLAR OBJECTS
- HERBIG AE/BE STARS
- BETA-PICTORIS
- CIRCUMSTELLAR DISK
- SYSTEM
- SEARCH
- DUST
- AGE