Keck LGS-AO Imaging of Cool WISE Brown Dwarfs

被引：0

作者：

Gelino, Christopher R. ^{[1
]}

Kirkpatrick, J. Davy ^{[1
]}

Cushing, Michael C. ^{[2
]}

Mainzer, Amanda ^{[2
]}

Griffith, Roger ^{[1
]}

Skrutskie, Michael ^{[3
]}

Eisenhardt, Peter ^{[2
]}

Wright, Edward L. ^{[4
]}

机构：

[1] CALTECH, Infrared Proc & Anal Ctr, 770 S Wilson Ave, Pasadena, CA 91125 USA

[2] NASA, Jet Prop Lab, Pasadena, CA 91109 USA

[3] Univ Virginia, Dept Astron, Charlottesville, VA 22903 USA

[4] Univ Calif Los Angeles, Astron Dept, Los Angeles, CA 90095 USA

来源：

16TH CAMBRIDGE WORKSHOP ON COOL STARS, STELLAR SYSTEMS AND THE SUN | 2012年 / 448卷

基金：

美国国家航空航天局;

关键词：

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The multiplicity properties of brown dwarfs are critical empirical constraints for formation theories, while multiples themselves provide unique opportunities to test evolutionary and atmospheric models and examine empirical trends. Studies using high-resolution imaging can not only uncover faint companions, but it can also be used to determine dynamical mass through long-term monitoring of binary systems. Targeting the coolest brown dwarfs has the added benefit that any faint, and therefore cooler, companions will be one step closer to finding an elusive "Y" dwarf. We have begun a search for the coolest brown dwarfs using preliminary data from the Wide-field Infrared Survey Explorer (WISE) and have confirmed many of the candidates as late T dwarfs. In order to search for companions to these objects, we are conducting observations using the Laser Guide Star Adaptive Optics system at Keck. In this paper we present the preliminary results of that search, including a faint companion to a T9.

引用

页码：E871 / E877

页数：7

共 7 条

[1] The spectra of T dwarfs. I. Near-infrared data and spectral classification [J].

Burgasser, AJ ;

Kirkpatrick, JD ;

Brown, ME ;

Reid, IN ;

Burrows, A ;

Liebert, J ;

Matthews, K ;

Gizis, JE ;

Dahn, CC ;

Monet, DG ;

Cutri, RM ;

Skrutskie, MF .

ASTROPHYSICAL JOURNAL, 2002, 564 (01) :421-451

[2] Exploring the substellar temperature regime down to ∼550K [J].

Burningham, Ben ;

Pinfield, D. J. ;

Leggett, S. K. ;

Tamura, M. ;

Lucas, P. W. ;

Homeier, D. ;

Day-Jones, A. ;

Jones, H. R. A. ;

Clarke, J. R. A. ;

Ishii, M. ;

Kuzuhara, M. ;

Lodieu, N. ;

Zapatero Osorio, M. R. ;

Venemans, B. P. ;

Mortlock, D. J. ;

Barrado y Navascues, D. ;

Martin, E. L. ;

Magazzu, A. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2008, 391 (01) :320-333

[3] CFBDS J005910.90-011401.3: reaching the T-Y brown dwarf transition? [J].

Delorme, P. ;

Delfosse, X. ;

Albert, L. ;

Artigau, E. ;

Forveille, T. ;

Reyle, C. ;

Allard, F. ;

Homeier, D. ;

Robin, A. C. ;

Willott, C. J. ;

Liu, M. C. ;

Dupuy, T. J. .

ASTRONOMY & ASTROPHYSICS, 2008, 482 (03) :961-971

[4]

Mainzer A., 2010, 10112279 ARXIV

[5] The USNO-B catalog [J].

Monet, DG ;

Levine, SE ;

Canzian, B ;

Ables, HD ;

Bird, AR ;

Dahn, CC ;

Guetter, HH ;

Harris, HC ;

Henden, AA ;

Leggett, SK ;

Levison, HF ;

Luginbuhl, CB ;

Martini, J ;

Monet, AKB ;

Munn, JA ;

Pier, JR ;

Rhodes, AR ;

Riepe, B ;

Sell, S ;

Stone, RC ;

Vrba, FJ ;

Walker, RL ;

Westerhout, G ;

Brucato, RJ ;

Reid, IN ;

Schoening, W ;

Hartley, M ;

Read, MA ;

Tritton, SB .

ASTRONOMICAL JOURNAL, 2003, 125 (02) :984-993

[6] A very cool brown dwarf in UKIDSS DR1 [J].

Warren, S. J. ;

Mortlock, D. J. ;

Leggett, S. K. ;

Pinfield, D. J. ;

Homeier, D. ;

Dye, S. ;

Jameson, R. F. ;

Lodieu, N. ;

Lucas, P. W. ;

Adamson, A. J. ;

Allard, F. ;

Barrado y Navascues, D. ;

Casali, M. ;

Chiu, K. ;

Hambly, N. C. ;

Hewett, P. C. ;

Hirst, P. ;

Irwin, M. J. ;

Lawrence, A. ;

Liu, M. C. ;

Martin, E. L. ;

Smart, R. L. ;

Valdivielso, L. ;

Venemans, B. P. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2007, 381 (04) :1400-1412

[7] THE WIDE-FIELD INFRARED SURVEY EXPLORER (WISE): MISSION DESCRIPTION AND INITIAL ON-ORBIT PERFORMANCE [J].

Wright, Edward L. ;

Eisenhardt, Peter R. M. ;

Mainzer, Amy K. ;

Ressler, Michael E. ;

Cutri, Roc M. ;

Jarrett, Thomas ;

Kirkpatrick, J. Davy ;

Padgett, Deborah ;

McMillan, Robert S. ;

Skrutskie, Michael ;

Stanford, S. A. ;

Cohen, Martin ;

Walker, Russell G. ;

Mather, John C. ;

Leisawitz, David ;

Gautier, Thomas N., III ;

McLean, Ian ;

Benford, Dominic ;

Lonsdale, Carol J. ;

Blain, Andrew ;

Mendez, Bryan ;

Irace, William R. ;

Duval, Valerie ;

Liu, Fengchuan ;

Royer, Don ;

Heinrichsen, Ingolf ;

Howard, Joan ;

Shannon, Mark ;

Kendall, Martha ;

Walsh, Amy L. ;

Larsen, Mark ;

Cardon, Joel G. ;

Schick, Scott ;

Schwalm, Mark ;

Abid, Mohamed ;

Fabinsky, Beth ;

Naes, Larry ;

Tsai, Chao-Wei .

ASTRONOMICAL JOURNAL, 2010, 140 (06) :1868-1881

← 1 →