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Title: NEW CANDIDATE ERUPTIVE YOUNG STARS IN LYNDS 1340

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 {sub ☉} < L {sub bol} < 59 L {sub ☉}. (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.
Authors:
; ;  [1] ;  [2] ;  [3] ;  [4] ;  [5]
  1. Konkoly Observatory, H-1121 Budapest, Konkoly Thege út 15-17 (Hungary)
  2. Department of Astronomy and Department of Planetary Sciences, The University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721 (United States)
  3. California Institute of Technology, 1200 East California Avenue, Pasadena, CA 91125 (United States)
  4. Thüringer Landessternwarte Tautenburg, Sternwarte 5, D-07778 Tautenburg (Germany)
  5. Astronomy Department, Adler Planetarium, 1300 South Lake Shore Drive, Chicago, IL 60605 (United States)
Publication Date:
OSTI Identifier:
22364494
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal Letters; Journal Volume: 795; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; BLOWERS; CAMERAS; HERBIG-HARO OBJECTS; IMAGES; INFRARED SPECTRA; LUMINOSITY; NEBULAE; PROTOSTARS; RESOLUTION; STAR EVOLUTION; T TAURI STARS