Discovery of a long-lived, high-amplitude dusty infrared transient

作者：Britt C T^*; Maccarone T J; Green J D; Jonker P G; Hynes R I; Torres M A P; Strader J; Chomiuk L; Salinas R; Lucas P; Pena C Contreras; Kurtev R; Heinke C; Smith L; Wright N J; Johnson C; Steeghs D; Nelemans G

来源：Monthly Notices of the Royal Astronomical Society, 2016, 460(3): 2822-2833.

DOI：10.1093/mnras/stw1182

• stars: formation
• stars: pre-main-sequence
• stars: variables: general
• stars: variables: T Tauri
• Herbig Ae
• Be
• stars: winds
• outflows

We report the detection of an infrared-selected transient which has lasted at least five years, first identified by a large mid-infrared and optical outburst from a faint X-ray source detected with the Chandra X-ray Observatory. In this paper we rule out several scenarios for the cause of this outburst, including a classical nova, a luminous red nova, AGN flaring, a stellar merger, and intermediate luminosity optical transients, and interpret this transient as the result of a young stellar object (YSO) of at least solar mass accreting material from the remains of the dusty envelope from which it formed, in isolation from either a dense complex of cold gas or massive star formation. This object does not fit neatly into other existing categories of large outbursts of YSOs (FU Orionis types) which may be a result of the object's mass, age, and environment. It is also possible that this object is a new type of transient unrelated to YSOs.

• 出版日期2016-8-11