Is beta Pictoris an active star?

Citation
M. Deleuil et al., Is beta Pictoris an active star?, ASTROPHYS J, 557(1), 2001, pp. L67-L70
Citations number
22
Categorie Soggetti
Space Sciences
Journal title
ASTROPHYSICAL JOURNAL
ISSN journal
0004637X → ACNP
Volume
557
Issue
1
Year of publication
2001
Part
2
Pages
L67 - L70
Database
ISI
SICI code
0004-637X(20010810)557:1<L67:IBPAAS>2.0.ZU;2-K
Abstract
We present the first emission-line spectrum of beta Pictoris, as revealed b y the Far Ultraviolet Spectroscopic Explorer satellite. Broad emission line s due to highly ionized species, C III and O VI, are well detected above th e very low continuum level. The mere presence of such lines in the beta Pic spectrum is evidence of a complex stellar environment, including dense and hot regions. We argue that these spectral features may originate from a so lar-like extended chromosphere or from magnetospheric accretion.