J/A+A/528/A111 GJ3634 radial velocity and 4.5um flux (Bonfils+, 2011)
A short-period super-Earth orbiting the M2.5 dwarf GJ3634.
Detection with Harps velocimetry and transit search with Spitzer photometry.
Bonfils X., Gillon M., Forveille F., Delfosse X., Deming D., Demory B.-O.,
Lovis C., Mayor M., Neves V., Perrier C., Santos N.C., Seager S., Udry S.,
Boisse I., Bonnefoy M.
<Astron. Astrophys. 528, A111 (2011)>
=2011A&A...528A.111B 2011A&A...528A.111B
ADC_Keywords: Stars, double and multiple ; Planets ; Radial velocities ;
Photometry, infrared
Keywords: techniques: radial velocities - stars: late-type - planetary systems
Abstract:
We report on the detection of GJ3634b, a super-Earth of mass
msini=7.0±0.9 Mearth and period P=2.64561±0.00066-day. Its host
star is a M2.5 dwarf, has a mass of 0.45±0.05M☉, a radius of
0.43±0.03R☉ and lies 19.8±0.6pc away from our Sun. The
planet is detected after a radial-velocity campaign using the
ESO/Harps spectrograph. GJ3634b had an a priori geometric probability
to undergo transit of ∼7% and, if telluric in composition, a
non-grazing transit would produce a photometric dip of ≲0.1%. We
therefore followed-up upon the RV detection with photometric
observations using the 4.5-um band of the IRAC imager onboard Spitzer.
Our six-hour long light curve excludes that a transit occurs for
2sigma of the probable transit window, decreasing the probability that
GJ3634b undergoes transit to ∼0.5%.
Description:
The tables contain radial-velocity and photometry time series of
GJ3634. Radial velocities were obtained with he HARPS spectrograph on
the 3.6m telescope at La Silla, Chile. Photometry was obtained with
Spitzer.
Objects:
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RA (2000) DE Designation(s)
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10 58 35.1 -31 08 39 GJ 3634 = LHS 2335
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 30 54 HARPS measured radial velocities for GJ 3634
table3.dat 62 832 Spitzer photometry for GJ 3634
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 14 F14.6 d BJD Barycentric Julian date
16- 22 F7.5 km/s BRV Barycentric radial velocity
24- 30 F7.5 km/s e_BRV Radial-velocity uncertainty
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 16 F16.8 d BJD Barycentric Julian date
18- 27 F10.8 --- F4.5um Normalized 4.5-um flux
29- 39 F11.8 --- Xpos Position on detector
41- 51 F11.8 --- Ypos Position on detector
53- 62 F10.8 --- F4.5umd Normalized-detrended 4.5-um flux
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Acknowledgements:
Xavier Bonfils, xavier.bonfils(at)obs.ujf-grenoble.fr
(End) Xavier Bonfils [IPAG], Patricia Vannier [CDS] 08-Feb-2011