Multi-Site observations of SU Aurigae

Details Multi-Site observations of SU Aurigae Multi-Site observations of SU Aurigae

2004-01-07

arxiv.org/abs/astro-ph/0401081v1

Mon.Not.Roy.Astron.Soc. 348 (2004) 1301

Astronomy and Astrophysics

Astrophysics

22 pages, 20 figures, accepted for publication in MNRAS

Scientific paper

10.1111/j.1365-2966.2004.07445.x

We present results from the 1996 MUSICOS (MUlti-SIte COntinuous Spectroscopy) campaign on the T Tauri star SU Aurigae. We find a 2.7-d periodicity in the He I (587.6 nm) line and somewhat longer, less well-pronounced periodicities in the Balmer lines and in Na D. Our observations support the suggestion that the wind and infall signatures are out of phase on SU Aur. We present Doppler images of SU Aur that have been obtained from least-squares deconvolved profiles. Images taken about one rotation apart show only limited overlap, in particular at low latitudes. This is in part due to limitations in signal-to-noise, and in part due to line profile deformations that arise from short-lived and/or non-surface features. The agreement at high latitudes is better and suggests that at least some longer-lived features are present. The analysis of Stokes V profiles yields a marginal magnetic field detection during one of the phases.

Affiliated with

Also associated with

No associations

Rating

Multi-Site observations of SU Aurigae does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Multi-Site observations of SU Aurigae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-Site observations of SU Aurigae will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-113833