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J/ApJ/787/126    WISE reduced proper motions and spectral types  (Luhman+, 2014)

Characterization of high proper motion objects from the wide-field infrared survey explorer. Luhman K.L., Sheppard S.S. <Astrophys. J., 787, 126 (2014)> =2014ApJ...787..126L (SIMBAD/NED BibCode)
ADC_Keywords: Stars, dwarfs ; Photometry, infrared ; Proper motions ; Spectral types Keywords: brown dwarfs - infrared: stars - proper motions - solar neighborhood - stars: low-mass Abstract: We present an analysis of high proper motion objects that we have found in a recent study and in this work with multi-epoch astrometry from the Wide-field Infrared Survey Explorer (WISE). Using photometry and proper motions from the Two Micron All-Sky Survey and WISE, we have identified the members of this sample that are likely to be late-type, nearby, or metal-poor. We have performed optical and near-infrared spectroscopy on 41 objects, from which we measure spectral types that range from M4-T2.5. This sample includes 11 blue L dwarfs and 5 subdwarfs; the latter were also classified as such in the recent study by Kirkpatrick and coworkers. Based on their spectral types and photometry, several of our spectroscopic targets may have distances of <20 pc with the closest at ∼12 pc. The tangential velocities implied by the spectrophotometric distances and proper motions indicate that four of the five subdwarfs are probably members of the Galactic halo while several other objects, including the early-T dwarf WISE J210529.08-623558.7, may belong to the thick disk. Description: Luhman (2014, J/ApJ/781/4) used multi-epoch astrometry from WISE to identify 762 high proper motion objects. For this study, we consider the 761 sources that were detected by 2MASS because our analysis relies on both 2MASS and WISE photometry. The one remaining object that is absent from 2MASS, WISE J085510.83-071442.5, has been characterized by Luhman (2014ApJ...786L..18L). We also examine an additional 20 high proper motion objects that are presented in Table 1, one of which (WISE J175510.28+180320.2) has already been reported by Griffith et al. (2012, J/AJ/144/148) and Mace et al. (2013ApJS..206....6D). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table4.dat 30 781 Reduced Proper Motions and Spectral Type Estimates
See also: II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003) II/311 : WISE All-Sky Data Release (Cutri+ 2012) J/AJ/123/3409 : SDSS M, L, and T dwarfs (Hawley+, 2002) J/AJ/127/3553 : JHK photometry and spectroscopy for L and T dwarfs (Knapp+, 2004) J/AJ/144/148 : Infrared photometry of brown dwarf and Hyper-LIRG (Griffith+, 2012) J/ApJ/781/4 : Photometry of high proper motion objects from WISE (Luhman, 2014) J/ApJ/783/122 : AllWISE motion survey (Kirkpatrick+, 2014) J/MNRAS/454/4054 : High proper motion sources from WISE (Beamin+, 2015) J/ApJ/817/112 : NEOWISE/AllWISE high proper motion objects (Schneider+, 2016) Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 19 A19 --- WISE Source name (WISE from the WISE All-Sky Source Catalog (Cat. II/311) 21- 25 F5.2 mag Hw2 Reduced proper motion in W2 band 27- 30 F4.1 --- SpType Spectral type estimated from colors (1)
Note (1): Numerical types are defined such that -8, 0, 10, and 20 correspond to K0, M0, L0, and T0, respectively.
History: From electronic version of the journal
(End) Prepared by [AAS], Tiphaine Pouvreau [CDS] 30-Jun-2017
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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