dc.contributor.author | Motalebi, F. | |
dc.contributor.author | Udry, S. | |
dc.contributor.author | Gillon, M. | |
dc.contributor.author | Lovis, C. | |
dc.contributor.author | Ségransan, D. | |
dc.contributor.author | Buchhave, L. A. | |
dc.contributor.author | Demory, B. O. | |
dc.contributor.author | Malavolta, L. | |
dc.contributor.author | Dressing, Courtney Danielle | |
dc.contributor.author | Sasselov, Dimitar D. | |
dc.contributor.author | Rice, K. | |
dc.contributor.author | Charbonneau, David | |
dc.contributor.author | Collier Cameron, A. | |
dc.contributor.author | Latham, David Winslow | |
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 D. | |
dc.contributor.author | Johnson, John Asher | |
dc.contributor.author | Lopez, E. | |
dc.contributor.author | Lopez-Morales, Maria Mercedes | |
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 | 2017-03-15T20:00:22Z | |
dc.date.issued | 2015 | |
dc.identifier.citation | Motalebi, F., S. Udry, M. Gillon, C. Lovis, D. Ségransan, L. A. Buchhave, B. O. Demory, et al. 2015. “The HARPS-N Rocky Planet Search.” A&A 584 (November 24): A72. doi:10.1051/0004-6361/201526822. | en_US |
dc.identifier.issn | 0004-6361 | en_US |
dc.identifier.uri | http://nrs.harvard.edu/urn-3:HUL.InstRepos:30781103 | |
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 quasicircular 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, the preferred 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. | en_US |
dc.description.sponsorship | Astronomy | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | EDP Sciences | en_US |
dc.relation.isversionof | doi:10.1051/0004-6361/201526822 | en_US |
dash.license | LAA | |
dc.subject | techniques: radial velocities | en_US |
dc.subject | techniques: photometric | en_US |
dc.subject | stars: individual: HD 219134 | en_US |
dc.subject | binaries: eclipsing | en_US |
dc.subject | instrumentation: spectrographs | en_US |
dc.title | The HARPS-N Rocky Planet Search | en_US |
dc.type | Journal Article | en_US |
dc.description.version | Version of Record | en_US |
dc.relation.journal | Astronomy & Astrophysics | en_US |
dash.depositing.author | Charbonneau, David | |
dc.date.available | 2017-03-15T20:00:22Z | |
dc.identifier.doi | 10.1051/0004-6361/201526822 | * |
dash.authorsordered | false | |
dash.identifier.orcid | 0000-0001-8189-0233 | en_US |
dash.contributor.affiliated | Lopez-Morales, Maria | |
dash.contributor.affiliated | Dressing, Courtney Danielle | |
dash.contributor.affiliated | Haywood, Raphaelle | |
dash.contributor.affiliated | Johnson, John | |
dash.contributor.affiliated | Sasselov, Dimitar | |
dash.contributor.affiliated | Latham, David | |
dash.contributor.affiliated | Charbonneau, David | |
dc.identifier.orcid | 0000-0001-8189-0233 | |