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J/ApJ/789/154       Kepler-10 RV measurements by HARPS-N     (Dumusque+, 2014)

The Kepler-10 planetary system revisited by HARPS-N: a hot rocky world and a solid Neptune-mass planet. Dumusque X., Bonomo A.S., Haywood R.D., Malavolta L., Segransan D., Buchhave L.A., Collier Cameron A., Latham D.W., Molinari E., Pepe F., Udry S., Charbonneau D., Cosentino R., Dressing C.D., Figueira P., Fiorenzano A.F.M., Gettel S., Harutyunyan A., Horne K., Lopez-Morales M., Lovis C., Mayor M., Micela G., Motalebi F., Nascimbeni V., Phillips D.F., Piotto G., Pollacco D., Queloz D., Rice K., Sasselov D., Sozzetti A., Szentgyorgyi A., Watson C. <Astrophys. J., 789, 154 (2014)> =2014ApJ...789..154D (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Planets ; Radial velocities Keywords: planetary systems - stars: individual (Kepler-10 KOI-072 KIC 11904151) - stars: statistics - techniques: photometric - techniques: spectroscopic Abstract: Kepler-10b was the first rocky planet detected by the Kepler satellite and confirmed with radial velocity follow-up observations from Keck-HIRES. The mass of the planet was measured with a precision of around 30%, which was insufficient to constrain models of its internal structure and composition in detail. In addition to Kepler-10b, a second planet transiting the same star with a period of 45 days was statistically validated, but the radial velocities were only good enough to set an upper limit of 20 M for the mass of Kepler-10c. To improve the precision on the mass for planet b, the HARPS-N Collaboration decided to observe Kepler-10 intensively with the HARPS-N spectrograph on the Telescopio Nazionale Galileo on La Palma. In total, 148 high-quality radial-velocity measurements were obtained over two observing seasons. These new data allow us to improve the precision of the mass determination for Kepler-10b to 15%. With a mass of 3.33±0.49 Mand an updated radius of 1.47-0.02+0.03 R, Kepler-10b has a density of 5.8±0.8 g/cm3, very close to the value predicted by models with the same internal structure and composition as the Earth. We were also able to determine a mass for the 45-day period planet Kepler-10c, with an even better precision of 11%. With a mass of 17.2±1.9 M and radius of 2.35-0.04+0.09 R, Kepler-10c has a density of 7.1±1.0 g/cm3. Kepler-10c appears to be the first strong evidence of a class of more massive solid planets with longer orbital periods. Description: We monitored the RV variation of Kepler-10 with the HARPS-N spectrograph installed on the 3.57-m Telescopio Nazionale Galileo at the Spanish Observatorio del Roque de los Muchachos, La Palma Island, Spain (Cosentino et al. 2012SPIE.8446E..1VC). This instrument is an updated version of the original HARPS planet hunter installed on the 3.6-m telescope at the European Southern Observatory on La Silla, Chile (Mayor et al. 2003Msngr.114...20M). Just like its older brother, the HARPS-N instrument is an ultra-stable fiber-fed high-resolution (R = 115,000) optical echelle spectrograph optimized for the measurement of very precise RVs. The use of a more modern monolithic 4kx4k CCD enclosed in a more temperature stable cryostat, and the use of octagonal fibers for a better scrambling of the incoming light fed into the spectrograph should improve the precision of the instrument compared to HARPS. Scientific operations began at HARPS-N in 2012 August. Over the first two observing seasons, we obtained 157 RV measurements of Kepler-10. Four observations that were obtained during bad weather conditions had very low signal to noise (S/N, <10) and were rejected. Objects: ---------------------------------------------------------- RA (ICRS) DE Designation(s) ---------------------------------------------------------- 19 02 43.06 +50 14 28.7 Kepler-10 = KOI-72 ---------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 71 148 HARPS-N RV measurements
See also: V/133 : Kepler Input Catalog (Kepler Mission Team, 2009) J/ApJ/738/170 : False positive Kepler planet candidates (Morton+, 2011) J/A+A/555/A58 : New Kepler planetary candidates (Ofir+, 2013) J/A+A/583/A65 : Active Kepler stars differential rotation (Reinhold+, 2015) J/MNRAS/456/2636 : Kepler-10 chemical composition (Liu+, 2016) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 12 F12.6 d BJD Barycentric Julian Date; BJD-2400000 14- 23 F10.6 km/s RVel Radial velocity 25- 32 F8.6 km/s e_RVel Error in RVel 34- 41 F8.6 km/s FWHM Line Full-Width at Half-Maximum 43- 50 F8.6 km/s e_FWHM Error in FWHM 52- 58 F7.4 [-] logR'HK Calcium activity index 60- 65 F6.4 [-] e_logR'HK Error in logR'HK 67- 71 F5.2 --- SNR Signal-to-Noise ratio at 550 nm
History: From electronic version of the journal
(End) Prepared by [AAS], Tiphaine Pouvreau [CDS] 13-Mar-2017
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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