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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
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: --------------------------------------------- RA (2000) DE Designation(s) --------------------------------------------- 10 58 35.1 -31 08 39 GJ 3634 = LHS 2335 --------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 30 54 HARPS measured radial velocities for GJ 3634 table3.dat 62 832 Spitzer photometry for GJ 3634
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
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
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
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
Acknowledgements: Xavier Bonfils, xavier.bonfils(at)
(End) Xavier Bonfils [IPAG], Patricia Vannier [CDS] 08-Feb-2011
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