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The HARPS-N Rocky Planet Search : I. A transiting rocky planet in a 4 planet system at 6.5 pc from the Sun
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dc.contributor.author | Motalebi, F. | |
dc.contributor.author | Udry, S. | |
dc.contributor.author | Gillon, M. | |
dc.contributor.author | Lovis, C. | |
dc.contributor.author | Segransan, D. | |
dc.contributor.author | Buchhave, L. A. | |
dc.contributor.author | Demory, B. O. | |
dc.contributor.author | Malavolta, L. | |
dc.contributor.author | Dressing, C. D. | |
dc.contributor.author | Sasselov, D. | |
dc.contributor.author | Rice, K. | |
dc.contributor.author | Charbonneau, D. | |
dc.contributor.author | Cameron, Andrew Collier | |
dc.contributor.author | Latham, D. | |
dc.contributor.author | Molinari, E. | |
dc.contributor.author | Pepe, F. | |
dc.contributor.author | Affer, L. | |
dc.contributor.author | Bonomo, A. S. | |
dc.contributor.author | Cosentino, R. | |
dc.contributor.author | Dumusque, X. | |
dc.contributor.author | Figueira, P. | |
dc.contributor.author | Fiorenzano, A. F. M. | |
dc.contributor.author | Gettel, S. | |
dc.contributor.author | Harutyunyan, A. | |
dc.contributor.author | Haywood, Raphaelle Dawn | |
dc.contributor.author | Johnson, J. | |
dc.contributor.author | Lopez, E. | |
dc.contributor.author | Lopez-Morales, M. | |
dc.contributor.author | Mayor, M. | |
dc.contributor.author | Micela, G. | |
dc.contributor.author | Mortier, A. | |
dc.contributor.author | Nascimbeni, V. | |
dc.contributor.author | Philips, D. | |
dc.contributor.author | Piotto, G. | |
dc.contributor.author | Pollacco, D. | |
dc.contributor.author | Queloz, D. | |
dc.contributor.author | Sozzetti, A. | |
dc.contributor.author | Vanderburg, A. | |
dc.contributor.author | Watson, C. A. | |
dc.date.accessioned | 2015-09-15T10:40:03Z | |
dc.date.available | 2015-09-15T10:40:03Z | |
dc.date.issued | 2015-12 | |
dc.identifier | 209407151 | |
dc.identifier | c147f0c8-adb7-4a04-a4a1-d4ade2a85c42 | |
dc.identifier | 84946930604 | |
dc.identifier | 000366936800072 | |
dc.identifier.citation | Motalebi , F , Udry , S , Gillon , M , Lovis , C , Segransan , D , Buchhave , L A , Demory , B O , Malavolta , L , Dressing , C D , Sasselov , D , Rice , K , Charbonneau , D , Cameron , A C , Latham , D , Molinari , E , Pepe , F , Affer , L , Bonomo , A S , Cosentino , R , Dumusque , X , Figueira , P , Fiorenzano , A F M , Gettel , S , Harutyunyan , A , Haywood , R D , Johnson , J , Lopez , E , Lopez-Morales , M , Mayor , M , Micela , G , Mortier , A , Nascimbeni , V , Philips , D , Piotto , G , Pollacco , D , Queloz , D , Sozzetti , A , Vanderburg , A & Watson , C A 2015 , ' The HARPS-N Rocky Planet Search : I. A transiting rocky planet in a 4 planet system at 6.5 pc from the Sun ' , Astronomy & Astrophysics , vol. 584 , A72 , pp. 1-12 . https://doi.org/10.1051/0004-6361/201526822 | en |
dc.identifier.issn | 0004-6361 | |
dc.identifier.other | BibCode: 2015arXiv150708532M | |
dc.identifier.other | ORCID: /0000-0002-8863-7828/work/58531427 | |
dc.identifier.uri | https://hdl.handle.net/10023/7463 | |
dc.description | The research leading to these results has received funding from the European Union Seventh Framework program (FP7/2007- 2013) under grant agreement No. 313014 (ETAEARTH). C.D. is supported by a National Science Foundation Graduate Research Fellowship. P.F. acknowledges support by Fundaçao para a Ciência e a Tecnologia (FCT) through Investigador FCT contracts of reference IF/01037/2013 and POPH/FSE (EC) by FEDER funding through the program "Programa Operacional de Factores de Competitividade - COMPETE". S.U., C.L., D.S. and F.P. acknowledge the financial support of the SNSF. PF further acknowledges support from Fundação para a Ciência e a Tecnologia (FCT) in the form of an exploratory project of reference IF/01037/2013CP1191/CT0001. RDH was supported by STFC studentship grant ST/J500744/1 during the course of this work. CAW acknowledges support from STFC grant ST/L000709/1. This publication was made possible by a grant from the John Templeton Foundation. This material is based upon work supported by the National Aeronautics and Space Administration under Grant No. NNX15AC90G issued through the Exoplanets Research Program. | en |
dc.description.abstract | We know now from radial velocity surveys and transit space missions that planets only a few times more massive than our Earth are frequent around solar-type stars. Fundamental questions about their formation history, physical properties, internal structure, and atmosphere composition are, however, still to be solved. We present here the detection of a system of four low-mass planets around the bright (V = 5.5) and close-by (6.5 pc) star HD 219134. This is the first result of the Rocky Planet Search programme with HARPS-N on the Telescopio Nazionale Galileo in La Palma. The inner planet orbits the star in 3.0935 ± 0.0003 days, on a quasi-circular orbit with a semi-major axis of 0.0382 ± 0.0003 AU. Spitzer observations allowed us to detect the transit of the planet in front of the star making HD 219134 b the nearest known transiting planet to date. From the amplitude of the radial velocity variation (2.25 ± 0.22 ms-1) and observed depth of the transit (359 ± 38 ppm), the planet mass and radius are estimated to be 4.36 ± 0.44 M⊕ and 1.606 ± 0.086 R⊕, leading to a mean density of 5.76 ± 1.09 g cm-3, suggesting a rocky composition. One additional planet with minimum-mass of 2.78 ± 0.65 M⊕ moves on a close-in, quasi-circular orbit with a period of 6.767 ± 0.004 days. The third planet in the system has a period of 46.66 ± 0.08 days and a minimum-mass of 8.94 ± 1.13 M⊕, at 0.233 ± 0.002 AU from the star. Its eccentricity is 0.46 ± 0.11. The period of this planet is close to the rotational period of the star estimated from variations of activity indicators (42.3 ± 0.1 days). The planetary origin of the signal is, however, thepreferred solution as no indication of variation at the corresponding frequency is observed for activity-sensitive parameters. Finally, a fourth additional longer-period planet of mass of 71 M⊕ orbits the star in 1842 days, on an eccentric orbit (e = 0.34 ± 0.17) at a distance of 2.56 AU. | |
dc.format.extent | 12 | |
dc.format.extent | 4354860 | |
dc.language.iso | eng | |
dc.relation.ispartof | Astronomy & Astrophysics | en |
dc.subject | Planetary systems: super-Earth | en |
dc.subject | Techniques: radial velocity | en |
dc.subject | Techniques: photometry | en |
dc.subject | Stars:individual: HD219134 | en |
dc.subject | Binaries: eclipsing | en |
dc.subject | Instrument: HARPS-N | en |
dc.subject | QB Astronomy | en |
dc.subject | QC Physics | en |
dc.subject | DAS | en |
dc.subject | BDC | en |
dc.subject | R2C | en |
dc.subject | ~DC~ | en |
dc.subject.lcc | QB | en |
dc.subject.lcc | QC | en |
dc.title | The HARPS-N Rocky Planet Search : I. A transiting rocky planet in a 4 planet system at 6.5 pc from the Sun | en |
dc.type | Journal article | en |
dc.contributor.sponsor | European Commission | en |
dc.contributor.sponsor | Science & Technology Facilities Council | en |
dc.contributor.sponsor | Science & Technology Facilities Council | en |
dc.contributor.sponsor | PPARC - Now STFC | en |
dc.contributor.sponsor | Science & Technology Facilities Council | en |
dc.contributor.sponsor | Science & Technology Facilities Council | en |
dc.contributor.sponsor | Science & Technology Facilities Council | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.identifier.doi | 10.1051/0004-6361/201526822 | |
dc.description.status | Peer reviewed | en |
dc.identifier.url | http://adsabs.harvard.edu/abs/2015arXiv150708532M | en |
dc.identifier.grantnumber | en | |
dc.identifier.grantnumber | ST/M001296/1 | en |
dc.identifier.grantnumber | ST/I000666/1 | en |
dc.identifier.grantnumber | PP/D000890/1 | en |
dc.identifier.grantnumber | ST/J001651/1 | en |
dc.identifier.grantnumber | ST/G001006/1 | en |
dc.identifier.grantnumber | PP/F000065/1 | en |
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