J/A+A/546/A27 Radial velocity and photometry for GJ3470 (Bonfils+, 2012)
A hot Uranus transiting the nearby M dwarf GJ 3470. Detected with HARPS
velocimetry. Captured in transit with TRAPPIST photometry.
Bonfils X., Gillon M., Udry S., Armstrong D., Bouchy F., Delfosse X.,
Forveille T., Fumel A., Jehin E., Lendl M., Lovis C., Mayor M.,
Mccormac J., Neves V., Pepe F., Perrier C., Pollaco D., Queloz D.,
Santos N.C.
<Astron. Astrophys., 546, A27 (2012)>
=2012A&A...546A..27B 2012A&A...546A..27B
ADC_Keywords: Stars, double and multiple ; Planets ; Radial velocities
Keywords: techniques: radial velocities - techniques: photometric -
planetary systems - stars: late-type - stars: individual: GJ 3470
Abstract:
We report on the discovery of GJ 3470b, a transiting hot Uranus of
mass mp=14.0±1.8M{earth}, radius Rp=4.2±0.6R{earth} and
period P=3.3371±0.0002-day. Its host star is a nearby
(d=25.2±2.9pc) M1.5 dwarf of mass Mstar=0.54±0.07M☉ and
radius Rstar=0.50±0.06R☉. The detection was made during a
radial-velocity campaign with Harps that focused on the search for
short-period planets orbiting M dwarfs. Once the planet was discovered
and the transit-search window narrowed to about 10% of an orbital
period, a photometric search started with Trappist and quickly
detected the ingress of the planet. Additional observations with
Trappist, EulerCam and Nites definitely confirmed the transiting
nature of GJ3470b and allowed the determination of its true mass and
radius. The star's visible or infrared brightness (Vmag=12.3,
Kmag=8.0), together with a large eclipse depth D=0.57±0.05%, ranks
GJ 3470 b among the most suitable planets for follow-up
characterizations.
Description:
The tables contain radial-velocity and photometry time series of
GJ3470. Radial velocities were obtained with he HARPS spectrograph.
Photometry was obtained with TRAPPIST, EulerCam and NITES telescopes.
Objects:
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RA (2000) DE Designation(s)
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07 59 05.9 +15 23 30 GJ 3470 = LSPM J0759+1523
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 31 61 HARPS measured RV for GJ3470
table4.dat 36 764 TRAPPIST photometry for GJ3470, night 1
table5.dat 36 943 TRAPPIST photometry for GJ3470, night 2
table6.dat 36 223 EulerCam photometry for GJ3470, night 2
table7.dat 36 586 NITES photometry for GJ3470, night 3
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See also:
J/A+A/469/L43 : Radial velocities of Gl 581 (Udry+, 2007)
J/A+A/471/L51 : Hot Neptune GJ 436b Spitzer observations (Gillon+, 2007)
J/A+A/474/293 : Radial velocities of GJ 674 (Bonfils+, 2007)
J/A+A/475/1125 : Characterization of the hot Neptune GJ 436b (Demory+, 2007)
J/A+A/493/645 : Gl 176 radial velocities (Forveille+, 2009)
J/A+A/507/487 : GJ 581 radial velocity curve (Mayor+, 2009)
J/A+A/511/A21 : Radial velocities of GJ876 planetary system (Correia+, 2010)
J/A+A/526/A141 : Gl 676A and HIP 12961 velocity monitoring (Forveille+, 2011)
J/A+A/528/A111 : GJ3634 radial velocity and 4.5um flux (Bonfils+, 2011)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 14 F14.6 d BJD Barycentric Julian date
16- 23 F8.5 km/s RV Barycentric radial velocity
25- 31 F7.5 km/s e_RV Radial-velocity uncertainty
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Byte-by-byte Description of file: table4.dat table5.dat table6.dat table7.dat
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Bytes Format Units Label Explanations
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1- 14 F14.6 d BJD Barycentric Julian date
16- 25 F10.8 --- Flux Normalized flux
27- 36 F10.8 --- e_Flux Normalized flux uncertainty
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History:
* 03-Dec-2012: Original data
Acknowledgements:
Xavier Bonfils, xavier.bonfils(at)obs.ujf-grenoble.fr
(End) Patricia Vannier [CDS] 03-Dec-2012