A study of intermediate-mass stars in Trumpler 37

Maria. E. Contreras (Lead / Corresponding author), Aurora Sicilia-Aguilar, James Muzerolle, Nuria Calvet, Perry Berlind, Lee Hartmann

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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
DOIs
Publication statusPublished - Sep 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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    Contreras, M. E., Sicilia-Aguilar, A., Muzerolle, J., Calvet, N., Berlind, P., & Hartmann, L. (2002). A study of intermediate-mass stars in Trumpler 37. Astronomical Journal, 124(3), 1585-1592. https://doi.org/10.1086/341825