J/MNRAS/495/2713 TIC-231005575 photometric and RV curves (Gill+, 2020)
A long period (P = 61.8 d) M5V dwarf eclipsing a Sun-like star from
TESS and NGTS.
Gill S., Cooke B.F., Bayliss D., Nielson L.D., Lendl M., Wheatley P.J.,
Anderson D.R., Moyano M., Bryant E.M., Acton J.S., Belardi C., Bouchy F.,
Burleigh M.R., Casewell S.L., Chausev A., Goad M.R., Jackman J.A.G.,
Jenkins J.S., McCormac J., Gunther M.N., Osborn H.P., Pollaco D.,
Raynard L., Smith A.M.S., Tillbrook R.H., Turner O., Udry S., Vines J.I.,
Watson C.A., West R.G.
<Mon. Not. R. Astron. Soc. 495, 2713-2719 (2020)>
=2020MNRAS.495.2713G 2020MNRAS.495.2713G (SIMBAD/NED BibCode)
ADC_Keywords: Binaries, eclipsing ; Photometry ; Radial velocities
Keywords: binaries, eclipsing
Abstract:
The Transiting Exoplanet Survey Satellite (TESS) has produced a large
number of single transit event candidates which are being monitored by
the Next Generation Transit Survey (NGTS). We observed a second epoch
for the TIC-231005575 system (Tmag=12.06, Teff=5500±85K) with NGTS
and a third epoch with Las Cumbres Observatory's (LCO) telescope in
South Africa to constrain the orbital period (P=61.777d). Subsequent
radial velocity measurements with CORALIE revealed the transiting
object has a mass of M2=0.128±0.003M☉, indicating the system
is a G-M binary. The radius of the secondary is
R2=0.154±0.008R☉ and is consistent with models of stellar
evolution to better than 1-σ.
Description:
Photometric and spectroscopic observations of TIC-231005575
A second epoch for the TIC-231005575 system was observed with NGTS and
a third epoch with Las Cumbres Observatory's (LCO) telescope in South
Africa
Following the successful recovery of the orbital period of
TIC-231005575 using NGTS and LCO, ten spectroscopic observations of
TIC-231005575 were taken using CORALIE - a fiber-fed echelle
spectrograph installed on the 1.2-m Leonard Euler telescope at the ESO
La Silla Observatory.
Objects:
-----------------------------------------
RA (2000) DE Designation(s)
-----------------------------------------
01 40 01.25 -54 31 21.7 TIC 231005575
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
coralie.dat 75 11 Radial velocity observations of TIC-231005575
from CORALIE
lco.dat 64 103 LCO photometry of TIC-231005575
ngts.dat 124 1546 NGTS photometry of TIC-231005575
tess.dat 51 1652 TESS photometry of TIC-231005575
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See also:
IV/38 : TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)
Byte-by-byte Description of file: coralie.dat
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Bytes Format Units Label Explanations
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1- 12 F12.6 d BJD Barycentric Julian Date
14- 22 F9.5 km/s RV Radial velocity
24- 30 F7.5 km/s e_RV rms uncertainty on RV
32- 38 F7.5 km/s FWHM FWHM span of the CCF
40- 45 F6.3 km/s Contrast Contrast span of the CCF
47- 54 F8.5 km/s BisSpan Bisector span of the CCF
56- 62 F7.5 km/s noise Uncertainty on radial velocity
(only photon noise)
64- 66 F3.1 -- sn10 Signal to noise in order 10
68- 70 F3.1 -- sn50 Signal to noise in order 50
72- 75 F4.1 -- sn60 Signal to noise in order 60
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Byte-by-byte Description of file: lco.dat
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Bytes Format Units Label Explanations
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1- 18 F18.10 d BJD Barycentric Julian Date
20- 41 F22.19 mag mag LCO magnitude
44- 64 F21.19 mag e_mag rms uncertainty on mag
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Byte-by-byte Description of file: ngts.dat
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Bytes Format Units Label Explanations
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1- 16 F16.8 d JD Julian date
18- 33 F16.8 d BJD Barycentric Julian date
35- 50 F16.8 d HJD Heliocentric Julian date
52- 59 F8.6 -- Airmass AirmasS
61- 65 F5.3 km/s FWHM FWHM
67- 74 F8.3 pix Xpos X position
76- 83 F8.3 pix Ypos Y position
85-102 F18.16 -- Flux NGTS flux in 520-890nm bandpass
104-124 F21.19 -- e_Flux rms uncertainty on Flux
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Byte-by-byte Description of file: tess.dat
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Bytes Format Units Label Explanations
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1- 18 F18.10 d BJD Barycentric Julain date
20- 42 E23.19 mag Tmag Tess magnitude
44- 51 F8.6 mag e_Tmag rms uncertainty on Tmag
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Acknowledgements:
Samuel Gill, samuel.gill(at)warwick.ac.uk
(End) Patricia Vannier [CDS] 21-Apr-2020