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New Candidate Eruptive Young Stars in Lynds 1340

Kun, M. and Apai, D. and O'Linger-Luscusk, J. and Moór, A. and Stecklum, B. and Szegedi-Elek, E. and Wolf-Chase, G. (2014) New Candidate Eruptive Young Stars in Lynds 1340. Astrophysical Journal Letters, 795 (2). Art. No. L26. ISSN 2041-8205.

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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.

Item Type:Article
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Apai, D.0000-0003-3714-5855
Additional Information:© 2014 American Astronomical Society. Received 2014 August 16; accepted 2014 October 3; published 2014 October 21. We are grateful to Gábor Fűrész for obtaining the FAST spectrum of IRAS 02224+7227. This work makes use of observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA. Our results are partly based on observations collected at the Centro Astronόmico Hispano Alemán (CAHA) at Calar Alto, operated jointly by the Max-Planck Institut für Astronomie and the Instituto de Astrofísica de Andalucía (CSIC). This research utilized observations with the 2.2 m Telescope of the University of Hawaii and we thank Colin Aspin and Bo Reipurth for their interest and support. Our research has benefited from the VizieR catalogue access tool, CDS, Strasbourg, France. Financial support from the Hungarian OTKA grant K81966 is acknowledged.
Funding AgencyGrant Number
OTKA (Hungary)K81966
Subject 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
Issue or Number:2
Record Number:CaltechAUTHORS:20150107-095819806
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Official Citation:[α/Fe] Abundances of Four Outer M31 Halo Stars Luis C. Vargas et al. 2014 ApJ 797 L2
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:53263
Deposited By: Ruth Sustaita
Deposited On:07 Jan 2015 20:39
Last Modified:09 Mar 2020 13:18

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