A Study of Intermediate-Mass Stars in Trumpler 37

Details A Study of Intermediate-Mass Stars in Trumpler 37 A Study of Intermediate-Mass Stars in Trumpler 37

Sep 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aj....124.1585c&link_type=abstract

The Astronomical Journal, Volume 124, Issue 3, pp. 1585-1592.

Astronomy and Astrophysics

Astronomy

27

Stars: Circumstellar Matter, Stars: Color-Magnitude Diagrams, Stars: Early-Type, Stars: Emission-Line, Be

Scientific paper

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).

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