Research articles

search articles

My Pages

Stat

Members: 3645
Articles: 2'501'711
Articles rated: 2609

19 April 2024

» arxiv » astro-ph/0401081

Article overview

Multi-Site observations of SU Aurigae
Y. C. Unruh ; J.-F. Donati ; J. M. Oliveira ; A. Collier Cameron ; C. Catala ; H. F. Henrichs ; C. M. Johns-Krull ; B. Foing ; J. Hao ; H. Cao ; J.D. Landstreet ; H. C. Stempels ; J. A. de Jong ; J. Telting ; N. Walton ; P. Ehrenfreund ; A. Hatzes ; J. E. Neff ; T. Böhm ; T. Simon ; L. Kaper ; K. G. Strassmeier ; Th. Granzer ;
Date:	7 Dec 2003
Journal:	Mon.Not.Roy.Astron.Soc. 348 (2004) 1301
Subject:	astro-ph
Abstract:	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.
Source:	arXiv, astro-ph/0401081
Services:	Forum \| Review \| PDF \| Favorites

No review found.

Did you like this article?

This article or document is ...
important:
of broad interest:
readable:
new:
correct:
Global appreciation:

Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.

browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

ScienXe.org
» my Online CV
» Free

News, job offers and information for researchers and scientists:

home

contact

sitemap