The remarkable pre-main sequence object V 1318 Cygni.
Abstract
We present optical, near-IR, and sub-mm observations of the young pre-main sequence (PMS) star V1318 Cygni. Together with the Herbig Ae/Be (HAEBE) stars BD+40 4124 and V1686 Cygni, these objects form a small cluster of young emission line stars. The optically brightest member is BD+40 4124. At wavelengths greater than or = 5 micrometers however, V1318 Cygni is the dominant source. In the optical and near-IR, V1318 Cygni resolves into three distinct components oriented north-south with a total separation of 5 sec. The northern (N) and southern (S) sources appear stellar. Both are photometrically variable. The middle (M) source appears to be a nebulous knot in the optical while at 2 micrometers, its morphology suggests it may be a nebulous bridge or stream joining N ans S. We suggest that V1318 Cygni is a young, PMS binary, possible interacting, with a projected separation of approximately 5000 A.U. The southern object is likely of intermediate-mass and probably a very young HAEBE stars. The northern object is possible a young, low-mass star.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- February 1994
- Bibcode:
- 1994A&A...282L..25A
- Keywords:
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- Infrared Astronomy;
- Light (Visible Radiation);
- Pre-Main Sequence Stars;
- Radio Astronomy;
- Star Clusters;
- Stellar Envelopes;
- Astronomical Photometry;
- Astronomical Spectroscopy;
- Charge Coupled Devices;
- Interstellar Extinction;
- Stellar Luminosity;
- Astronomy