LBT/LUCIFER near-infrared spectroscopy of PV Cephei: An outbursting young stellar object with an asymmetric jet

Young stellar objects (YSOs) occasionally experience enhanced accretion events, the nature of which is still poorly understood. The discovery of various embedded outbursting YSOs has recently questioned the classical definition of EXors and FUors. We present a detailed spectroscopic investigation of...

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Bibliographic Details
Published in:Astronomy and astrophysics (Berlin) 2013-06, Vol.554, p.1-15
Main Authors: Caratti, A, Lopez, R Garcia, Weigelt, G, Tambovtseva, L V, Grinin, V R, Wheelwright, H, Ilee, J D
Format: Article
Language:English
Subjects:
Astronomy
Astrophysics
Asymmetry
Origins
Outbursts
Signatures
Spectroscopy
Stars
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Summary:Young stellar objects (YSOs) occasionally experience enhanced accretion events, the nature of which is still poorly understood. The discovery of various embedded outbursting YSOs has recently questioned the classical definition of EXors and FUors. We present a detailed spectroscopic investigation of the young eruptive star PV Cep, to improve our understanding of its nature and characterise its circumstellar environment after its last outburst in 2004. According to the classical definition, PV Cep is not an EXor object, because it is more massive and younger than typical EXors. Nevertheless, its spectrum shows the signature of an "EXor-like" outburst, suggesting a common origin.
ISSN:0004-6361
1432-0746
DOI:10.1051/0004-6361/201321418