New candidate eruptive young stars in LYNDS 1340

M. Kun, D. Apai, J. O'Linger-Luscusk, A. Moór, B. Stecklum, E. Szegedi-Elek, G. Wolf-Chase

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

We report on the discovery of three candidate eruptive young stars, found during our comprehensive multi-wavelength study of the young stellar population of the dark cloud L1340. These stars are as follows. (1) IRAS 02224+7227 (2MASS 02270555+7241167, HH 487S) exhibited FUor-like spectrum in our low-resolution optical spectra. The available photometric data restrict its luminosity to 23 L < L bol < 59 L . (2) 2MASS 02263797+7304575, identified as a classical T Tauri star during our Hα survey, exhibited an EXor-type brightening in 2005 November at the time of the Sloan Digital Sky Survey observations of the region. (3) 2MASS 02325605+7246055, a low-mass embedded young star, associated with a fan-shaped infrared nebula, underwent an outburst between the DSS 1 and DSS 2 surveys, leading to the appearance of a faint optical nebula. Our [S II] and Hα images, as well as the Spitzer Infrared Array Camera 4.5 μm images, revealed Herbig-Haro objects associated with this star. Our results suggest that amplitudes and timescales of outbursts do not necessarily correlate with the evolutionary stage of the stars.

Original languageEnglish (US)
Article numberL26
JournalAstrophysical Journal Letters
Volume795
Issue number2
DOIs
StatePublished - Nov 10 2014

Keywords

  • stars: individual (IRAS 02224+7227, 2MASS 02263797+7304575, 2MASS 02325605+7246055)
  • stars: pre-main sequence
  • stars: protostars
  • stars: variables: T Tauri, Herbig Ae/Be

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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    Kun, M., Apai, D., O'Linger-Luscusk, J., Moór, A., Stecklum, B., Szegedi-Elek, E., & Wolf-Chase, G. (2014). New candidate eruptive young stars in LYNDS 1340. Astrophysical Journal Letters, 795(2), [L26]. https://doi.org/10.1088/2041-8205/795/2/L26