J/MNRAS/426/1507 Detached M dwarf eclipsing binaries in WTS (Birkby+, 2012)
Discovery and characterization of detached M dwarf eclipsing binaries in the
WFCAM Transit Survey.
Birkby J., Nefs B., Hodgkin S., Kovacs G., Sipocz B., Pinfield D.,
Snellen I., Mislis D., Murgas F., Lodieu N., De Mooij E., Goulding N.,
Cruz P., Stoev H., Cappetta M., Palle E., Barrado D., Saglia R., Martin E.,
Pavlenko Y.
<Mon. Not. R. Astron. Soc., 426, 1507-1532 (2012)>
=2012MNRAS.426.1507B 2012MNRAS.426.1507B
ADC_Keywords: Surveys ; Binaries, eclipsing ; Stars, dwarfs ; Stars, M-type ;
Photometry
Keywords: surveys - binaries: eclipsing - stars: fundamental parameters -
stars: late-type - stars: magnetic field - stars: rotation
Abstract:
We report the discovery of 16 detached M dwarf eclipsing binaries (MEBs)
with J<16mag and provide a detailed characterization of three of them,
using high-precision infrared light curves from the WFCAM Transit
Survey (WTS). Such systems provide the most accurate and
model-independent method for measuring the fundamental parameters of
these poorly understood yet numerous stars, which currently lack
sufficient observations to precisely calibrate stellar evolution
models.
Description:
We identified our new MEBs using observations from the WTS (WFCAM
Transit Survey). The WTS is an ongoing photometric monitoring campaign
that operates on the 3.8-m United Kingdom Infrared Telescope (UKIRT)
at Mauna Kea, Hawaii.
The survey began on 2007 August 5, and the eclipsing systems presented
in this paper are all found in just one of the four WTS fields.
Photometric follow-up observations to help test and refine our
light-curve models were obtained in the Sloan i band using the
Wide-Field Camera (WFC) on the 2.5-m INT at Roque de Los Muchachos,
La Palma.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table6.dat 223 3 A summary of photometric properties for the three
M dwarf eclipsing binaries (MEBs)
tablea1.dat 98 13 The first release of the WFCAM Transit Survey (WTS)
M dwarf Eclipsing Binary Catalogue detailing the
remaining MEBs in the WTS 19hr field with J≤16mag
that are not characterized in this paper
table1.dat 53 3590 The WTS J-band light curves of 19b-2-01387,
19c-3-01405 and 19e-3-08413
table2.dat 53 291 INT i-band follow-up light curves of
19b-2-01387 and 19e-3-08413
table3.dat 53 191 IAC80 g-band follow-up light curve of 19e-3-08413
tablea2.dat 53 11632 The WTS J-band light curves for the remainder of
the WTS MEB catalogue given in Table A1
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- Name Name
13- 14 I2 h RAh Right ascension (J2000)
16- 17 I2 min RAm Right ascension (J2000)
19- 22 F4.1 s RAs Right ascension (J2000)
24 A1 --- DE- Declination sign (J2000)
25- 26 I2 deg DEd Declination (J2000)
28- 29 I2 arcmin DEm Declination (J2000)
31- 34 F4.1 arcsec DEs Declination (J2000)
36- 45 F10.8 d Per Period
47- 56 F10.8 d e_Per rms uncertainty on Per
58- 71 F14.6 d T0 Epoch (HJD)
73- 80 F8.6 d e_T0 rms uncertainty on T0
82- 87 F6.3 arcsec/yr pmRA Proper motion along RA, pmRA*cosDE
89- 93 F5.3 arcsec/yr e_pmRA rms uncertainty on pmRA
95-100 F6.3 arcsec/yr pmDE Proper motion along DE
102-106 F5.3 arcsec/yr e_pmDE rms uncertainty on pmDE
108-113 F6.3 mag gmag SDSS g magnitude (AB system)
115-119 F5.3 mag e_gmag rms uncertainty on gmag
121-126 F6.3 mag rmag SDSS r magnitude (AB system)
128-132 F5.3 mag e_rmag rms uncertainty on rmag
134-139 F6.3 mag imag SDSS i magnitude (AB system)
141-145 F5.3 mag e_imag rms uncertainty on imag
147-152 F6.3 mag zmag SDSS z magnitude (AB system)
154-158 F5.3 mag e_zmag rms uncertainty on zmag
160-165 F6.3 mag Zmag UKIRT/WFCAM Z magnitude (Vega system)
167-171 F5.3 mag e_Zmag rms uncertainty on Zmag
173-178 F6.3 mag Ymag UKIRT/WFCAM Y magnitude (Vega system)
180-184 F5.3 mag e_Ymag rms uncertainty on Ymag
186-191 F6.3 mag Jmag UKIRT/WFCAM J magnitude (Vega system)
193-197 F5.3 mag e_Jmag rms uncertainty on Jmag
199-204 F6.3 mag Hmag UKIRT/WFCAM H magnitude (Vega system)
206-210 F5.3 mag e_Hmag rms uncertainty on Hmag
212-217 F6.3 mag Kmag UKIRT/WFCAM K magnitude (Vega system) (1)
219-223 F5.3 mag e_Kmag rms uncertainty on Kmag
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Note (1): Note that the WFCAM K-band magnitude for 19b-2-01387 was obtained
during an eclipse event and does not represent the total system magnitude.
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Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- Name Name (1)
13- 21 F9.5 deg RAdeg Right ascension in decimal degrees (J2000)
23- 31 F9.6 deg DEdeg Declination in decimal degrees (J2000)
33- 35 I3 --- Nep Number of epochs
37- 40 F4.1 mmag rms rms scatter
42- 49 F8.6 d Per Period
51- 63 F13.5 d T0 Epoch (HJD)
65- 70 F6.3 mag Jmag UKIRT/WFCAM J magnitude (Vega)
72- 76 F5.3 mag e_Jmag rms uncertainty on Jmag
78- 83 F6.3 mag imag SDSS i magnitude (Vega)
85- 89 F5.3 mag e_imag rms uncertainty on imag
91- 94 I4 K Teff Effective temperature, SED
96- 98 I3 K e_Teff rms uncertainty on Teff
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Note (1): Note that 19g-4-02069 is the subject for a near future publication
by Nefs et al. (in preparation) using RV follow-up from GNIRS/GEMINI.
Please see appendix text for caveats on the quoted ephemerides.
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Byte-by-byte Description of file: table[123].dat tablea2.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- Name Name
14- 29 F16.8 d JD Julian date
32- 40 F9.6 mag mag Magnitude in Filt
44- 51 F8.6 mag e_mag rms uncertainty on mag
53 A1 --- Filt [Jig] Filter: J (WTS), i (INT), g (IAC80)
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 09-Apr-2013