New Candidate Eruptive Young Stars in Lynds 1340
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.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- November 2014
- DOI:
- 10.1088/2041-8205/795/2/L26
- arXiv:
- arXiv:1410.0810
- Bibcode:
- 2014ApJ...795L..26K
- 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;
- Astrophysics - Solar and Stellar Astrophysics
- E-Print:
- 14 pages, 3 figures