Ejection of a Low-Mass Star in a Young Stellar System in Taurus

Autor:	Mónica I. Rodríguez, Luis F. Rodríguez, Laurent Loinard
Rok vydání:	2003
Předmět:	Physics Very large array Orbit T Tauri star Elliptic orbit Space and Planetary Science Astrophysics (astro-ph) FOS: Physical sciences Astronomy Astronomy and Astrophysics Astrometry Astrophysics Low Mass
Zdroj:	The Astrophysical Journal. 587:L47-L50
ISSN:	1538-4357 0004-637X
DOI:	10.1086/375157
Popis:	We present the analysis of high angular resolution VLA radio observations, made at eleven epochs over the last 20 years, of the multiple system T Tauri. One of the sources (Sb) in the system has moved at moderate speed (5-10 km/s), on an apparently elliptical orbit during the first 15 years of observations, but after a close (< 2 AU) encounter with the source Sa, it appears to have accelerated westward to about 20 km/s in the last few years. Such a dramatic orbital change most probably indicates that Sb has just suffered an ejection - which would be the first such event ever detected. Whether Sb will ultimately stay on a highly elliptical bound orbit, or whether it will leave the system altogether will be known with about five more years of observations. 4 pages, accepter in ApJ Letters
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f04754b78caaf5e85558d54ccdfde4f3 https://doi.org/10.1086/375157 Zobrazit plný text záznamu