A study of intermediate-mass stars in Trumpler 37

ME Contreras*, A Sicilia-Aguilar, J Muzerolle, N Calvet, P Berlind, L Hartmann

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

50 Citations (Scopus)

Abstract

We present results from optical spectra for intermediate-mass stars in the young cluster Trumpler 37. The spectroscopy presented helps to re ne the membership, reddening ( A(V) similar to 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, LkHalpha 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 not greater than or equal to 1.5 M-circle dot).

Original languageEnglish
Pages (from-to)1585-1592
Number of pages8
JournalAstronomical Journal
Volume124
Issue number3
Publication statusPublished - Sept 2002

Keywords

  • circumstellar matter
  • color-magnitude diagrams
  • stars : early-type
  • stars : emission-line, Be
  • ALPHA EMISSION STARS
  • CIRCUMSTELLAR DISKS
  • PROTOSTELLAR DISKS
  • CLUSTER TRUMPLER-37
  • DUST PROPERTIES
  • AE/BE STARS
  • AE STARS
  • PHOTOEVAPORATION
  • SYSTEMS
  • RESOLUTION

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