NEW CANDIDATE ERUPTIVE YOUNG STARS IN LYNDS 1340

被引：5

作者：

Kun, M. ^{[1
]}

Apai, D. ^{[2
,3
]}

O'Linger-Luscusk, J. ^{[4
]}

Moor, A. ^{[1
]}

Stecklum, B. ^{[5
]}

Szegedi-Elek, E. ^{[1
]}

Wolf-Chase, G. ^{[6
,7
]}

机构：

[1] Konkoly Observ Budapest, H-1121 Budapest, Hungary

[2] Univ Arizona, Dept Astron, Tucson, AZ 85721 USA

[3] Univ Arizona, Dept Planetary Sci, Tucson, AZ 85721 USA

[4] CALTECH, Pasadena, CA 91125 USA

[5] Thuringer Landessternwarte Tautenburg, D-07778 Tautenburg, Germany

[6] Adler Planetarium, Dept Astron, Chicago, IL 60605 USA

[7] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2014年 / 795卷 / 02期

关键词：

stars:; individual; (IRAS; 02224+7227; 2MASS; 02263797+7304575; 02325605+7246055); stars: pre-main sequence; stars: protostars; stars: variables: T Tauri; Herbig Ae/Be; SPITZER; HISTORY; SPECTROSCOPY; PHOTOMETER; PROTOSTARS; ACCRETION; EVOLUTION; OBJECTS; NEBULA; ORION;

D O I：

10.1088/2041-8205/795/2/L26

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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-circle dot < L-bol < 59 L-circle dot. (2) 2MASS 02263797+7304575, identified as a classical T Tauri star during our H alpha 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 Ha images, as well as the Spitzer Infrared Array Camera 4.5 mu m 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.

引用

页数：6

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