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Astrophysics > Earth and Planetary Astrophysics

Title: IRAS 22150+6109 - a young B-type star with a large disc

Abstract: We present the results of a spectroscopic analysis and spectral energy distribution (SED) modelling of the optical counterpart of the infrared source IRAS 22150+6109. The source was suggested to be as a Herbig Be star located in the star forming region L 1188. Absorption lines in the optical spectrum indicate a spectral type B3, while weak Balmer emission lines reflect the presence of a circumstellar gaseous disc. The star shows no excess radiation in the near-infrared spectral region and a strong excess in the far-infrared that we interpret as radiation from a large disc, whose inner edge is located very far from the star (550 au) and does not attenuate its radiation. We conclude that IRAS 22150+6109 is an intermediate-mass star that is currently undergoing a short pre-main-sequence evolutionary stage.
Comments: 7 pages, 7 figures, accepted for publication in MNRAS
Subjects: Earth and Planetary Astrophysics (astro-ph.EP); Solar and Stellar Astrophysics (astro-ph.SR)
Cite as: arXiv:1803.06830 [astro-ph.EP]
  (or arXiv:1803.06830v1 [astro-ph.EP] for this version)

Submission history

From: Olga Zakhozhay [view email]
[v1] Mon, 19 Mar 2018 08:49:56 GMT (203kb)