VLT/NACO adaptive optics imaging of the TY CrA system - A fourth stellar component candidate detected

被引：19

作者：

Chauvin, G

Lagrange, AM

Beust, H

Fusco, T

Mouillet, D

Lacombe, F

Pujet, P

Rousset, G

Gendron, E

Conan, JM

Bauduin, D

Rouan, D

Brandner, W

Lenzen, R

Hubin, N

Hartung, M

机构：

[1] Observ Grenoble, Astrophys Lab, F-38400 St Martin Dheres, France

[2] Off Natl Etud & Rech Aerosp, F-92320 Chatillon, France

[3] Observ Midi Pyrenees, Astrophys Lab, F-65008 Tarbes, France

[4] Observ Paris, Lab Etud Spatiales & Instrumentat Astrophys, F-92195 Meudon, France

[5] Canada France Hawaii Telescope Corp, Kamuela, HI 96743 USA

[6] Max Planck Inst Astron, D-69117 Heidelberg, Germany

[7] ESO, D-85748 Garching, Germany

来源：

ASTRONOMY & ASTROPHYSICS | 2003年 / 406卷 / 03期

关键词：

binaries : eclipsing; stars : pre-main sequence; stars : low-mass; circumstellar matter;

D O I：

10.1051/0004-6361:20030554

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the detection of a possible subsolar mass companion to the triple young system TY CrA using the NACO instrument at the VLT UT4 during its commissioning. Assuming for TY CrA a distance similar to that of the close binary system HD 176386, the photometric spectral type of this fourth stellar component candidate is consistent with an similar toM 4 star. We discuss the dynamical stability of this possible quadruple system as well as the possible location of dusty particles inside or outside the system.

引用

页码：L51 / L54

页数：4

共 31 条

[1]

Baraffe I, 1998, ASTRON ASTROPHYS, V337, P403

[2]

Beust H, 1997, ASTRON ASTROPHYS, V320, P478

[3]

BIBO EA, 1992, A A, V277, P439

[4] THE PRE-MAIN-SEQUENCE TRIPLE TY CRA - SPECTROSCOPIC DETECTION OF THE SECONDARY AND TERTIARY COMPONENTS [J].

CASEY, BW ;

MATHIEU, RD ;

SUNTZEFF, NB ;

WALTER, FM .

ASTRONOMICAL JOURNAL, 1995, 109 (05) :2156-2168

[5] The pre-main-sequence eclipsing binary TY Coronae Australis: Precise stellar dimensions and tests of evolutionary models [J].

Casey, BW ;

Mathieu, RD ;

Vaz, LPR ;

Andersen, J ;

Suntzeff, NB .

ASTRONOMICAL JOURNAL, 1998, 115 (04) :1617-1633

[6] Comparison of star formation in five nearby molecular clouds [J].

Chen, H ;

Grenfell, TG ;

Myers, PC ;

Hughes, JD .

ASTROPHYSICAL JOURNAL, 1997, 478 (01) :295-312

[7]

CLARET A, 1995, ASTRON ASTROPHYS SUP, V109, P441

[8]

CLARET A, 1995, ASTRON ASTROPHYS, V302, P741

[9] Deconvolution of adaptive optics images: from theory to practice [J].

Conan, JM ;

Fusco, T ;

Mugnier, LM ;

Marchis, F ;

Roddier, C ;

Roddier, F .

ADAPTIVE OPTICAL SYSTEMS TECHNOLOGY, PTS 1 AND 2, 2000, 4007 :913-924

[10]

Corporon P, 1996, ASTRON ASTROPHYS, V310, P228

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