ADS
A Study of Intermediate-Mass Stars in Trumpler 37
Abstract
We present results from optical spectra for intermediate-mass stars in the young cluster Trumpler 37. The spectroscopy presented helps to refine the membership, reddening (AV~1.5+/-0.5), and distance modulus [(m-M)=9.7+/-0.2] to this cluster. Only three new emission-line stars were found in our sample, resulting in a total of four stars in the cluster with emission lines and spectral type earlier than G. One of these emission-line stars, LkHα 349, is probably not a member of the central cluster, since it lies within a dark globule on the periphery of the H II region IC 1396. Thus, at an age of about 3 Myr, as estimated from the expansion age of molecular material around the cluster, emission-line phenomena possibly driven by disk accretion are extremely rare through spectral types F (masses >~1.5 Msolar).
- Publication:
- The Astronomical Journal
- Pub Date:
- September 2002
- DOI:
- Bibcode:
- 2002AJ....124.1585C
- Keywords:
- Stars: Circumstellar Matter;
- Stars: Color-Magnitude Diagrams;
- Stars: Early-Type;
- Stars: Emission-Line;
- Be
