J/A+A/603/L5 HD106315c I light curve (Lendl+, 2017)
Ground-based photometry of the 21-day Neptune HD106315c.
Lendl M., Ehrenreich D., O.D.Turner, Bayliss D., Blanco-Cuaresma S.,
Giles H., Bouchy F., Marmier M., Udry S.
<Astron. Astrophys. 603, L5 (2017)>
=2017A&A...603L...5L 2017A&A...603L...5L (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Planets ; Photometry ;
Radial velocities
Keywords: techniques: photometric - planets and satellites: detection -
planet and satellites: individual: HD 106315c
Abstract:
Space-based transit surveys such as K2 and the Transiting Exoplanets
Survey Satellite (TESS) allow the detection of small transiting
planets with orbital periods greater than 10 days. Few of these warm
Neptunes are currently known around stars bright enough to allow for
detailed follow-up observations dedicated to their atmospheric
characterization. The 21-day period and 3.95REarth planet HD106315c
has been discovered by K2 based on the observation of two of its
transits. We observed HD 106315 using the 1.2m Euler telescope
equipped with the EulerCam camera on two occasions to confirm the
transit using broadband photometry and refine the planetary period.
Based on two observed transits of HD106315c, we detect its ∼1mmag
transit and obtain a precise measurement of the planetary ephemerides,
which are critical for planning further follow-up observations.
We used the attained precision together with the predicted yield from
the TESS mission to evaluate the potential for ground-based
confirmation of Neptune-sized planets found by TESS. We find that
one-meter class telescopes on the ground equipped with precise
photometers could substantially contribute to the follow-up of 162
TESS candidates orbiting stars with magnitudes of V<14. Of these
candidates, 74 planets orbit stars with V<12 and 12 planets orbit
V<10, which makes them high-priority objects for atmospheric
characterization with high-end instrumentation.
Description:
We present photometric time-series obtained with EulerCam during two
transits of HD106315c.
Objects:
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RA (2000) DE Designation(s)
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12 13 53.394 -00 23 36.54 HD106315 = BD+00 2910
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
lc.dat 81 786 EulerCam relative photometry (I Cousins filter)
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Byte-by-byte Description of file: lc.dat
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Bytes Format Units Label Explanations
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1- 11 F11.6 d HJD Heliocentric Julian Date (-2450000)
13- 21 F9.6 --- Flux Normalized Flux (in Cousins I band)
24- 31 F8.6 --- e_Flux Normalized Flux error
33- 38 F6.2 pix xshi Pixel shift in x-direction
40- 45 F6.2 pix yshi Pixel shift in y-direction
48- 56 F9.3 --- Max Maximum target counts (ADU units)
59- 63 F5.2 pix FWHM Stellar Full-Width at Half Maximum
67- 72 F6.2 --- Sky Sky level (Flux)
77- 81 F5.2 s ExpTime Exposure time
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Acknowledgements:
Monika Lendl, monika.lendl(at)oeaw.ac.at
(End) Patricia Vannier [CDS] 22-Jun-2017