The TW Hydrae association: Discovery of T Tauri star members near HR 4796

被引：85

作者：

Zuckerman, B ^{[1
]}

Webb, RA ^{[1
]}

Schwartz, M ^{[1
]}

Becklin, EE ^{[1
]}

机构：

[1] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

来源：

ASTROPHYSICAL JOURNAL | 2001年 / 549卷 / 02期

基金：

美国国家科学基金会; 美国国家航空航天局;

关键词：

open clusters and associations : individual (TW Hydrae; Tucana; eta Chamaeleontis; MBM; 12; Horologium); stars : pre-main-sequence;

D O I：

10.1086/319155

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have identified six T Tauri stars, at least three of which are double, that are members of the nearest region of recent star formation, the TW Hydrae association. The newly discovered systems are mostly located south and east of and farther from Earth than most previously known members, thus, the full extent of the association is not yet established. Including secondaries in multiple star systems, the association is now known to include more than 30 T Tauri stars and a brown dwarf. We compare the TW Hydrae association to four other young nearby associations.

引用

页码：L233 / L236

页数：4

共 21 条

[1] DISCOVERY OF NEW ISOLATED T-TAURI STARS [J].

DELAREZA, R ;

TORRES, CAO ;

QUAST, G ;

CASTILHO, BV ;

VIEIRA, GL .

ASTROPHYSICAL JOURNAL, 1989, 343 (02) :L61-L64

[2] A SEARCH FOR T-TAURI STARS BASED ON THE IRAS POINT-SOURCE CATALOG .1. [J].

GREGORIOHETEM, J ;

LEPINE, JRD ;

QUAST, GR ;

TORRES, CAO ;

DELAREZA, R .

ASTRONOMICAL JOURNAL, 1992, 103 (02) :549-563

[3]

Hearty T, 2000, ASTRON ASTROPHYS, V353, P1044

[4]

HOG D, 2000, A A, V355, pL27

[5] THE KINEMATICS OF LITHIUM-RICH, ACTIVE LATE-TYPE STARS - EVIDENCE FOR A LOWMASS LOCAL ASSOCIATION [J].

JEFFRIES, RD .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1995, 273 (03) :559-572

[6] X-ray and molecular emission from the nearest region of recent star formation [J].

Kastner, JH ;

Zuckerman, B ;

Weintraub, DA ;

Forveille, T .

SCIENCE, 1997, 277 (5322) :67-71

[7] A candidate substellar companion to CD -33°7795 (TWA 5) [J].

Lowrance, PJ ;

McCarthy, C ;

Becklin, EE ;

Zuckerman, B ;

Schneider, G ;

Webb, RA ;

Hines, DC ;

Kirkpatrick, JD ;

Koerner, DW ;

Low, F ;

Meier, R ;

Rieke, M ;

Smith, BA ;

Terrile, RJ ;

Thompson, RI .

ASTROPHYSICAL JOURNAL, 1999, 512 (01) :L69-L72

[8] The η Chamaeleontis cluster:: Origin in the Sco-Cen OB association [J].

Mamajek, EE ;

Lawson, WA ;

Feigelson, ED .

ASTROPHYSICAL JOURNAL, 2000, 544 (01) :356-374

[9] The η Chamaeleontis cluster:: A remarkable new nearby young open cluster [J].

Mamajek, EE ;

Lawson, WA ;

Feigelson, ED .

ASTROPHYSICAL JOURNAL, 1999, 516 (02) :L77-L80

[10] Library of high-resolution UES echelle spectra of F, G, K and M field dwarf stars [J].

Montes, D ;

Martin, EL .

ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES, 1998, 128 (03) :485-495

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