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J/AJ/134/26         Binaries with white dwarf in 2MASS       (Hoard+, 2007)

Cool companions to white dwarf stars from the Two Micron All Sky Survey all sky data release. Hoard D.W., Wachter S., Sturch L.K., Widhalm A.M., Weiler K.P., Pretorius M.L., Wellhouse J.W., Gibiansky M. <Astron. J., 134, 26-42 (2007)> =2007AJ....134...26H
ADC_Keywords: Stars, double and multiple ; Stars, white dwarf ; Photometry, infrared Keywords: binaries: general - infrared: stars - stars: low-mass, brown dwarfs - white dwarfs Abstract: We present the culmination of our near-infrared survey of the optically spectroscopically identified white dwarf stars from the McCook and Sion (1999ApJS..121....1M, see Cat. III/235) catalog, conducted using photometric data from the Two Micron All Sky Survey final All Sky Data Release. The color selection technique, which identifies candidate binaries containing a white dwarf and a low-mass stellar (or substellar) companion via their distinctive locus in the near-infrared color-color diagram, is demonstrated to be simple to apply and to yield candidates with a high rate of subsequent confirmation. We recover 105 confirmed binaries, and identify 27 firm candidates (19 of which are new to this work) and 21 tentative candidates (17 of which are new to this work) from the 2MASS data. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 66 153 2MASS photometry for white dwarfs with near-IR excess
See also: II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003) III/235 : Spectroscopically Identified White Dwarfs (McCook+, 2008) J/ApJ/586/1356 : White dwarfs with cool companions (Wachter+, 2003) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 10 A10 --- Name White dwarf identification (HHMM+DDMM, B1950) 12- 27 A16 --- 2MASS 2MASS identification (HHMMSSss+DDMMSSs, J2000) 29- 34 F6.3 mag Jmag 2MASS J band magnitude 36- 40 F5.3 mag e_Jmag Uncertainty in J 42- 47 F6.3 mag Hmag 2MASS H band magnitude 49- 53 F5.3 mag e_Hmag Uncertainty in H 55- 60 F6.3 mag Ksmag 2MASS Ks band magnitude 62- 66 F5.3 mag e_Ksmag Uncertainty in Ksmag
History: From electronic version of the journal References: Wachter et al., Paper I 2003ApJ...586.1356W, Cat. J/ApJ/586/1356
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 22-Aug-2009
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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