eprintid: 1100
rev_number: 8
eprint_status: archive
userid: 1
dir: disk0/00/00/11/00
datestamp: 2000-10-10 00:00:00
lastmod: 2014-04-03 10:23:34
status_changed: 2012-08-14 15:00:36
type: doctoralThesis
metadata_visibility: show
creators_name: Frink, Sabine
title: Kinematics of T Tauri stars in nearby star forming regions
title_de: Kinematik von T-Tauri-Sternen in nahen Sternentstehungsgebieten
ispublished: pub
subjects: ddc-530
divisions: i-714100
adv_faculty: af-13
keywords: T Tauri stars , star formation , star forming regions , kinematics , proper motions (astronomy)
cterms_swd: T-Tauri-Stern
cterms_swd: Sternentstehung
cterms_swd: Sternentstehungsgebiet
cterms_swd: Kinematik
cterms_swd: Eigenbewegung <Astronomie>
abstract: The kinematics of T Tauri stars in the nearby star forming regions Taurus-Auriga, Chamaeleon, Lupus and Scorpius-Centaurus is studied using proper motions from the Hipparcos, PPM, ACT, TRC and STARNET proper motion catalogues. Especially the STARNET catalogue is very well suited for this purpose as it provides accurate proper motions for about 4.3 million stars, so that a large number of T Tauri stars is included in that catalogue. Where available, Hipparcos parallaxes and radial velocities are combined with the proper motions to calculate space velocities and velocity dispersions. In the Scorpius-Centaurus association, the favourable geometry allows for the determination of kinematical distances. A large fraction of the stars in the samples belongs to the population of weak-line T Tauri stars discovered with the help of the X-ray satellite ROSAT during the last years. In contrast to classical T Tauri stars, which had preferentially been found very close to the densest cores of the cloud material in those star forming regions, weak-line T Tauri stars are distributed over larger regions in space. The kinematic signatures of processes producing such halos of weak-line T Tauri stars should still be visible, and the observed motions of the stars are analyzed in the framework of various star formation scenarios.
abstract_translated_lang: eng
class_scheme: pacs
class_labels: 97.21.+a
date: 1999
date_type: published
id_scheme: DOI
id_number: 10.11588/heidok.00001100
portal_cluster_id: p-zah
portal_order: 01100
ppn_swb: 1643161520
own_urn: urn:nbn:de:bsz:16-opus-11004
date_accepted: 1999-02-10
advisor: HASH(0x55e0f7e16140)
language: eng
bibsort: FRINKSABINKINEMATICS1999
full_text_status: public
citation:   Frink, Sabine  (1999) Kinematics of T Tauri stars in nearby star forming regions.  [Dissertation]     
document_url: https://archiv.ub.uni-heidelberg.de/volltextserver/1100/1/dr.pdf