J/AJ/153/92 Late-Type Extension to MoVeRS (LaTE-MoVeRS) (Theissen+, 2017)
The Late-Type Extension to MoVeRS (LaTE-MoVeRS): Proper Motion Verified Low-mass
Stars and Brown Dwarfs from SDSS, 2MASS, and WISE.
Theissen C.A., West A.A., Shippee S., Burgasser A.J., Schmidt S.J.
<Astron. J. 153, 92 (2017)>
=2017AJ....153...92T 2017AJ....153...92T (SIMBAD/NED BibCode)
ADC_Keywords: Positional data ; Combined data ; Stars, dwarfs ; Stars, M-type
Keywords: brown dwarfs - circumstellar matter - proper motions -
stars: kinematics and dynamics - stars: late-type - stars: low-mass
Abstract:
We present the Late-Type Extension to the Motion Verified Red Stars
(LaTE-MoVeRS) catalog, containing 46,463 photometric late-type (>M5)
dwarfs within the Sloan Digital Sky Survey (SDSS) footprint. Proper
motions were computed for objects combining astrometry from the SDSS
Data Release 12 (DR12), the Two-micron All-Sky Survey (2MASS) Point
Source Catalog, and the Wide-field Infrared Survey Explorer (WISE)
AllWISE data sets. LaTE-MoVeRS objects were required to have
significant proper motion . Using the LaTE-MoVeRS sample and Gaia Data
Release 1, we estimate Gaia will be ∼64% complete for very low-mass
objects (>M5) in comparison to the combined SDSS+2MASS+WISE data set
(i<21.3). We computed photometric distances and estimated stellar
effective temperatures for the LaTE-MoVeRS catalog. The majority of
the dwarfs in the sample have distances <150pc and T<3000K. Thirteen
objects that have not been previously identified as nearby eff objects
were identified within LaTE-MoVeRS with estimated photometric
distances within 25pc. We also identified one new object that has not
been previously identified with a large amount of excess mid-infrared
flux (2MASS J11151597+1937266). This object appears to be an L2γ
at ∼50pc showing spectroscopic signs of a flaring event (e.g., strong
hydrogen Balmer emission lines). This object does not exhibit
kinematics similar to any known kinematic association. The LaTE-MoVeRS
catalog is available through SDSS CasJobs and VizieR.
Description:
We have built a catalog of 46,463 late-type (>M5) objects with
verified proper motions, termed the Late-Type Extension to the Motion
Verified Red Stars (LaTEMoVeRS) catalog. Proper motions were computed
using the SDSS, 2MASS, and WISE datasets following similar methods to
those outlined in Theissen et al. (2016, Cat. J/AJ/151/41).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
lmovers.dat 912 46463 Astrometry for 46463 low-mass stars & BDs
LaTE-MoVeRS.fits 2880 12592 FITS version of the catalog
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See also:
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
II/328 : AllWISE Data Release (Cutri+ 2013)
http://www.sdss3.org/dr8 : SDSS DR8 Home page
J/AJ/151/41 : Motion Verified Red Stars (MoVeRS) (Theissen+, 2016)
Byte-by-byte Description of file: lmovers.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 19 I19 --- objID SDSS DR8 Object ID (SDSS_OBJID)
21- 30 F10.6 deg RAdeg SDSS Right ascension (J2000.0) (SDSS_RA)
32- 41 F10.6 deg DEdeg SDSS Declination (J2000.0) (SDSS_DEC)
43- 47 F5.3 deg e_RAdeg SDSS Right ascension error (J2000.0)
(SDSS_RAERR)
49- 53 F5.3 deg e_DEdeg SDSS Declination error (J2000.0) (SDSS_DECERR)
55- 59 I5 d MJD SDSS Modified Julian Date (SDSS_MJD)
61- 67 F7.4 mag umag SDSS u-band PSF magnitude (UMAG)
69- 76 F8.4 mag e_umag SDSS u-band PSF magnitude error (UMAG_ERR)
78- 84 F7.4 mag Au SDSS u-band PSF extinction (A_U)
86- 92 F7.4 mag umag0 SDSS u-band PSF unredenned magnitude
(UMAG_UNRED)
94-100 F7.4 mag gmag SDSS g-band PSF magnitude (GMAG)
102-108 F7.4 mag e_gmag SDSS g-band PSF magnitude error (GMAG_ERR)
110-116 F7.4 mag Ag SDSS g-band PSF extinction (A_G)
118-124 F7.4 mag gmag0 SDSS g-band PSF unredenned magnitude
(GMAG_UNRED)
126-132 F7.4 mag rmag SDSS r-band PSF magnitude (RMAG)
134-140 F7.4 mag e_rmag SDSS r-band PSF magnitude error (RMAG_ERR)
142-148 F7.4 mag Ar SDSS r-band PSF extinction (A_R)
150-156 F7.4 mag rmag0 SDSS r-band PSF unredenned magnitude
(RMAG_UNRED)
158-164 F7.4 mag imag SDSS i-band PSF magnitude (IMAG)
166-172 F7.4 mag e_imag SDSS i-band PSF magnitude error (IMAG_ERR)
174-180 F7.4 mag Ai SDSS i-band PSF extinction (A_I)
182-188 F7.4 mag imag0 SDSS i-band PSF unredenned magnitude
(IMAG_UNRED)
190-196 F7.4 mag zmag SDSS z-band PSF magnitude (ZMAG)
198-204 F7.4 mag e_zmag SDSS z-band PSF magnitude error (ZMAG_ERR)
206-212 F7.4 mag Az SDSS z-band PSF extinction (A_Z)
214-220 F7.4 mag zmag0 SDSS z-band PSF unredenned magnitude
(ZMAG_UNRED)
222-231 F10.6 deg RA2deg 2MASS Right ascension (J2000.0) (2MASS_RA)
233-242 F10.6 deg DE2deg 2MASS Declination (J2000.0) 2MASS_DEC)
244-251 F8.6 deg e_RA2deg 2MASS Right ascension error (J2000.0)
(2MASS_RAERR)
253-260 F8.6 deg e_DE2deg 2MASS Declination error (J2000.0)
(2MASS_DECERR)
262-271 F10.4 d MJD2 2MASS modified Julian date (2MASS_MJD)
273-275 A3 --- Q2 2MASS photometric quality flag (2MASSPHQUAL)
277-279 A3 --- f2r 2MASS read flag (2MASSRDFLG)
281-283 A3 --- f2b 2MASS blend flag (2MASSBLFLG)
285-287 A3 --- f2c 2MASS contamination and confusion flag
(2MASSCCFLG)
289 I1 --- f2e [0/2] 2MASS extended source contamination flag
(2MASSGALCONTAM)
291-296 F6.3 mag Jmag 2MASS J-band PSF magnitude (JMAG)
298-306 F9.3 mag e_Jmag ?=-9999 2MASS J-band PSF corrected magnitude
uncertainty (JMAG_ERR)
308-316 F9.3 mag s_Jmag ?=-9999 2MASS J-band PSF total magnitude
uncertainty (JMAG_ERRTOT)
318-324 F7.1 --- JSNR [2.6/10905.1]?=-9999 2MASS J-band SNR (JSNR)
326-332 F7.4 mag AJ 2MASS J-band PSF extinction (A_J)
334-339 F6.3 mag Jmag0 2MASS J-band PSF unredenned magnitude
(JMAG_UNRED)
341-346 F6.3 mag Hmag 2MASS H-band PSF magnitude (HMAG)
348-356 F9.3 mag e_Hmag ?=-9999 2MASS H-band PSF corrected magnitude
uncertainty (HMAG_ERR)
358-366 F9.3 mag s_Hmag ?=-9999 2MASS H-band PSF total magnitude
uncertainty (HMAG_ERRTOT)
368-374 F7.1 --- HSNR [2.4/21632.7]?=-9999 2MASS H-band SNR (HSNR)
376-382 F7.4 mag AH 2MASS H-band PSF extinction (A_H)
384-389 F6.3 mag Hmag0 2MASS H-band PSF unredenned magnitude
(HMAG_UNRED)
391-396 F6.3 mag Kmag 2MASS K-band PSF magnitude (KMAG)
398-406 F9.3 mag e_Kmag ?=-9999 2MASS K-band PSF corrected magnitude
uncertainty (KMAG_ERR)
408-416 F9.3 mag s_Kmag ?=-9999 2MASS K-band PSF total magnitude
uncertainty (KMAG_ERRTOT)
418-424 F7.1 --- KSNR [2.1/27594.3]?=-9999 2MASS K-band SNR (KSNR)
426-432 F7.4 mag AK 2MASS K-band PSF extinction (A_K)
434-439 F6.3 mag Kmag0 2MASS K-band PSF unredenned magnitude
(KMAG_UNRED)
441-448 F8.2 --- Jchi ?=-9999 2MASS J-band chi2 PSF fit (J_PSFCHI)
450-457 F8.2 --- Hchi ?=-9999 2MASS H-band chi2 PSF fit (H_PSFCHI)
459-466 F8.2 --- Kchi ?=-9999 2MASS K-band chi2 PSF fit (K_PSFCHI)
468-477 F10.6 deg RAWdeg WISE Right ascension (J2000.0) (WISE_RA)
479-488 F10.6 deg DEWdeg WISE Declination (J2000.0) (WISE_DEC)
490-497 F8.6 deg e_RAWdeg WISE Right ascension error (J2000.0)
(WISE_RAERR)
499-506 F8.6 deg e_DEWdeg WISE Declination error (J2000.0) (WISE_DECERR)
508-511 A4 --- fWcc WISE contamination and confusion flag
(WISECCFLG)
513 I1 --- fWe WISE extended source flag (WISEEXTFLG)
515-518 A4 --- fWv WISE variability flag (WISEVARFLG)
520-523 A4 --- QW WISE photometric quality flag (WISEPHQUAL)
525-531 F7.1 d MJDW WISE W1-band average modified Julian Date
(W1MJDMEAN)
533-541 F9.5 d e_MJDW WISE MJD uncertainty (W1MJDSIG) (1)
543-548 F6.3 mag W1mag WISE W1-band PSF magnitude (W1MPRO)
550-558 F9.3 mag e_W1mag ?=-9999 WISE W1-band PSF magnitude error
(W1SIGMPRO)
560-566 F7.1 --- W1SNR [1.7/51.8]?=-9999 WISE W1-band SNR (W1SNR)
568-574 F7.4 mag AW1 WISE W1-band PSF extinction (A_W1)
576-581 F6.3 mag W1mag0 WISE W1-band PSF unredenned magnitude
(W1MPRO_UNRED)
583-591 F9.6 --- W1chi [0.08/61.91] WISE W1 reduced chi2 PSF fit
(W1RCHI2)
593-598 F6.3 mag W2mag WISE W2-band PSF magnitude (W2MPRO)
600-608 F9.3 mag e_W2mag ?=-9999 WISE W2-band PSF magnitude error
(W2SIGMPRO)
610-613 F4.1 --- W2SNR [-0.4/57.2] WISE W2-band SNR (W2SNR)
615-621 F7.4 mag AW2 WISE W2-band PSF extinction (A_W2)
623-628 F6.3 mag W2mag0 WISE W2-band PSF unredenned magnitude
(W2MPRO_UNRED)
630-638 F9.6 --- W2chi [0.19/33.1] WISE W2 reduced chi2 PSF fit
(W2RCHI2)
640-648 F9.3 mag W3mag ?=-9999 WISE W3-band PSF magnitude (W3MPRO)
650-658 F9.3 mag e_W3mag ?=-9999 WISE W3-band PSF magnitude error
(W3SIGMPRO)
660-666 F7.1 --- W3SNR [-14/83.4]?=-9999 WISE W3-band SNR (W3SNR)
668-674 F7.4 mag AW3 WISE W3-band PSF extinction (A_W3)
676-684 F9.3 mag W3mag0 ?=-9999 WISE W3-band PSF unredenned magnitude
(W3MPRO_UNRED)
686-692 F7.1 --- W3chi [0.5/3630]?=-9999 WISE W3 reduced chi2 PSF fit
(W3RCHI2)
694-702 F9.3 mag W4mag ?=-9999 WISE W4-band PSF magnitude (W4MPRO)
704-712 F9.3 mag e_W4mag ?=-9999 WISE W4-band PSF magnitude error
(W4SIGMPRO)
714-720 F7.1 --- W4SNR [-4.4/54.8]?=-9999 WISE W4-band SNR (W4SNR)
722-728 F7.4 mag AW4 WISE W4-band PSF extinction (A_W4)
730-738 F9.3 mag W4mag0 ?=-9999 WISE W4-band PSF unredenned magnitude
(W4MPRO_UNRED)
740-746 F7.1 --- W4chi [0.5/2459]?=-9999 WISE W4 reduced chi2 PSF fit
(W4RCHI2)
748-758 F11.5 mas/yr pmRA Proper motion in RA (proper units, i.e.
pmRA*cos(DE) (PMRA)
760-769 F10.5 mas/yr pmDE Proper motion in DE (PMDEC)
771-777 F7.5 mas/yr i_pmRA Intrinsic error in proper motion in RA
(PMRA_INTERR)
779-786 F8.5 mas/yr i_pmDE Intrinsic error in proper motion in DE
(PMDEC_INTERR)
788-796 F9.5 mas/yr pmRAf [0/325] Fit error in proper motion in RA
(PMRA_FITERR)
798-806 F9.5 mas/yr pmDEf [0/404] Fit error in proper motion in DE
(PMDEC_FITERR)
808-816 F9.5 mas/yr e_pmRA Combined error in proper motion in RA
(PMRA_TOTERR)
818-826 F9.5 mas/yr e_pmDE Combined error in proper motion in DE
(PMDEC_TOTERR)
828-835 F8.5 yr Dt Time baseline used to compute proper motion
(BASELINE)
837-844 F8.5 arcsec dWS Total distance between WISE position and
SDSS position (WS_DIST)
846-854 F9.5 pc Dist Photometric parallax distance (DISTANCE) (2)
856-864 F9.5 pc e_Dist Photometric parallax distance uncertainty
(DISTANCE_ERR)(2)
866-872 F7.2 K Temp Modeled temperature (TEMP)
874-880 F7.2 K E_Temp Modeled temperature upper limit (TEMP_HIGH)
882-888 F7.2 K e_Temp Modeled temperature lower limit (TEMP_LOW)
890-896 F7.5 [cm/s2] logg Modeled surface gravity (LOGG)
898-904 F7.5 [cm/s2] E_logg Modeled logg upper limit (LOGG_HIGH)
906-912 F7.5 [cm/s2] e_logg Modeled logg lower limit (LOGG_LOW)
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Note (1): Defined as 0.5*(W1MJDMAX-W1MJDMIN)
Note (2): Computed using the relationships in Bochanski et al.,
2010AJ....139.2679B 2010AJ....139.2679B
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Acknowledgements:
Christopher Theissen, ctheisse(at)bu.edu
(End) Christopher Theissen [BU, USA], Patricia Vannier [CDS] 16-Feb-2017