Adaptive optics imaging survey of the Tucana-Horologium association

被引：42

作者：

Chauvin, G

Thomson, M

Dumas, C

Beuzit, JL

Lowrance, P

Fusco, T

Lagrange, AM

Zuckerman, B

Mouillet, D

机构：

[1] Observ Grenoble, Astrophys Lab, F-38041 St Martin Dheres, France

[2] Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England

[3] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

[4] Off Natl Etud & Rech Aerosp, Dept Opt Theor & Appl, F-92322 Chatillon, France

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

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

来源：

ASTRONOMY & ASTROPHYSICS | 2003年 / 404卷 / 01期

关键词：

instrumentation : adaptive optics; stars : imaging; stars; low-mass; brown dwarfs;

D O I：

10.1051/0004-6361:20030352

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the results of an adaptive optics (AO) imaging survey of the common associations of Tucana and Horologium, carried out at the ESO 3.6 m telescope with the ADONIS/SHARPII system. Based on our observations of two dozen probable association members, HIP 1910 and HIP 108422 appear to have low-mass stellar companions, while HIP 6856 and GSC 8047-0232 have possible sub-stellar candidate companions. Astrometric measurements, performed in November 2000 and October 2001, indicate that HIP 1910 B likely is bound to its primary, but are inconclusive in the case of the candidate companion to HIP 6856. Additional observations are needed to confirm the HIP 6856 companionship as well as for HIP 108422 and GSC 8047-0232.

引用

页码：157 / 162

页数：6

共 23 条

[1]

Baraffe I, 1998, ASTRON ASTROPHYS, V337, P403

[2]

Baraffe I., 2002, ASTRON ASTROPHYS, V382, P563, DOI DOI 10.1051/0004-6361:20011638

[3] A nongray theory of extrasolar giant planets and brown dwarfs [J].

Burrows, A ;

Marley, M ;

Hubbard, WB ;

Lunine, JI ;

Guillot, T ;

Saumon, D ;

Freedman, R ;

Sudarsky, D ;

Sharp, C .

ASTROPHYSICAL JOURNAL, 1997, 491 (02) :856-875

[4] Evolutionary models for very low-mass stars and brown dwarfs with dusty atmospheres [J].

Chabrier, G ;

Baraffe, I ;

Allard, F ;

Hauschildt, P .

ASTROPHYSICAL JOURNAL, 2000, 542 (01) :464-472

[5] 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

[6] Astrometry and photometry for cool dwarfs and brown dwarfs [J].

Dahn, CC ;

Harris, HC ;

Vrba, FJ ;

Guetter, HH ;

Canzian, B ;

Henden, AA ;

Levine, SE ;

Luginbuhl, CB ;

Monet, AKB ;

Monet, DG ;

Pier, JR ;

Stone, RC ;

Walker, RL ;

Burgasser, AJ ;

Gizis, JE ;

Kirkpatrick, JD ;

Liebert, J ;

Reid, IN .

ASTRONOMICAL JOURNAL, 2002, 124 (02) :1170-1189

[7] Myopic deconvolution method for adaptive optics images of stellar fields [J].

Fusco, T ;

Véran, JP ;

Conan, JM ;

Mugnier, LM .

ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES, 1999, 134 (01) :193-200

[8] Toward spectral classification of L and T dwarfs: Infrared and optical spectroscopy and analysis [J].

Geballe, TR ;

Knapp, GR ;

Leggett, SK ;

Fan, X ;

Golimowski, DA ;

Anderson, S ;

Brinkmann, J ;

Csabai, I ;

Gunn, JE ;

Hawley, SL ;

Hennessy, G ;

Henry, TJ ;

Hill, GJ ;

Hindsley, RB ;

Ivezic, Z ;

Lupton, RH ;

McDaniel, A ;

Munn, JA ;

Narayanan, VK ;

Peng, E ;

Pier, JR ;

Rockosi, CM ;

Schneider, DP ;

Smith, JA ;

Strauss, MA ;

Tsvetanov, ZI ;

Uomoto, A ;

York, DG ;

Zheng, W .

ASTROPHYSICAL JOURNAL, 2002, 564 (01) :466-481

[9] Infrared spectrum and proper motion of the brown dwarf companion of HR 7329 in Tucanae [J].

Guenther, EW ;

Neuhäuser, R ;

Huélamo, N ;

Brandner, W ;

Alves, J .

ASTRONOMY & ASTROPHYSICS, 2001, 365 (03) :514-518

[10]

Hog E, 2000, ASTRON ASTROPHYS, V355, pL27

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