WFRF:(MacQueen P.)
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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 08487naa a2200865 4500 | |
| 001 | oai:research.chalmers.se:60712e12-e7cf-47b5-be16-ce04bf5c836a | |
| 003 | SwePub | |
| 008 | 171007s2017 | |||||||||||000 ||eng| | |
| 009 | oai:lup.lub.lu.se:37ec0d4f-518a-4794-8b1f-062825b2e1b8 | |
| 024 | 7 | a https://doi.org/10.1051/0004-6361/2017308222 DOI |
| 024 | 7 | a https://research.chalmers.se/publication/2509352 URI |
| 024 | 7 | a https://lup.lub.lu.se/record/37ec0d4f-518a-4794-8b1f-062825b2e1b82 URI |
| 040 | a (SwePub)cthd (SwePub)lu | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a art2 swepub-publicationtype |
| 072 | 7 | a ref2 swepub-contenttype |
| 100 | 1 | a Fridlund, Malcolm,d 1952u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)malfri |
| 245 | 1 0 | a K2-111 b - A short period super-Earth transiting a metal poor, evolved old star |
| 264 | c 2017-07-26 | |
| 264 | 1 | b EDP Sciences,c 2017 |
| 338 | a electronic2 rdacarrier | |
| 520 | a Context. From a light curve acquired through the K2 space mission, the star K2-111(EPIC 210894022) has been identified as possibly orbited by a transiting planet. Aims: Our aim is to confirm the planetary nature of the object and derive its fundamental parameters. Methods: We analyse the light curve variations during the planetary transit using packages developed specifically for exoplanetary transits. Reconnaissance spectroscopy and radial velocity observations have been obtained using three separate telescope and spectrograph combinations. The spectroscopic synthesis package SME has been used to derive the stellar photospheric parameters that were used as input to various stellar evolutionary tracks in order to derive the parameters of the system. The planetary transit was also validated to occur on the assumed host star through adaptive imaging and statistical analysis. Results: The star is found to be located in the background of the Hyades cluster at a distance at least 4 times further away from Earth than the cluster itself. The spectrum and the space velocities of K2-111 strongly suggest it to be a member of the thick disk population. The co-added high-resolution spectra show that that it is a metal poor ([Fe/H] = - 0.53 ± 0.05 dex) and α-rich somewhat evolved solar-like star of spectral type G3. We find Teff = 5730 ± 50 K, log g⋆ = 4.15 ± 0.1 cgs, and derive a radius of R⋆ = 1.3 ± 0.1 R⊙ and a mass of M⋆ = 0.88 ± 0.02 M⊙. The currently available radial velocity data confirms a super-Earth class planet with a mass of 8.6 ± 3.9 M⊕ and a radius of 1.9 ± 0.2 R⊕. A second more massive object with a period longer than about 120 days is indicated by a long-term radial velocity drift. Conclusions: The radial velocity detection together with the imaging confirms with a high level of significance that the transit signature is caused by a planet orbiting the star K2-111. This planet is also confirmed in the radial velocity data. A second more massive object (planet, brown dwarf, or star) has been detected in the radial velocity signature. With an age of ≳10 Gyr this system is one of the oldest where planets are hitherto detected. Further studies of this planetary system are important since it contains information about the planetary formation process during a very early epoch of the history of our Galaxy. | |
| 650 | 7 | a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng |
| 653 | a techniques: spectroscopic | |
| 653 | a techniques: photometric | |
| 653 | a planetary systems | |
| 653 | a stars: individual: K2-111 b | |
| 653 | a planetary systems | |
| 653 | a stars: individual: K2-111 b | |
| 653 | a techniques: photometric | |
| 653 | a techniques: spectroscopic | |
| 700 | 1 | a Gaidos, E.u Lund University,Lunds universitet,Pufendorfinstitutet,Universitetets särskilda verksamheter,Pufendorf Institute for Advanced Studies,University Specialised Centres4 aut0 (Swepub:lu)piz-ego |
| 700 | 1 | a Barragán, O.u Universita degli Studi di Torino,University of Turin4 aut |
| 700 | 1 | a Persson, Carina,d 1964u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)carina64 |
| 700 | 1 | a Gandolfi, D.u Universita degli Studi di Torino,University of Turin4 aut |
| 700 | 1 | a Cabrera, J.u Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)4 aut |
| 700 | 1 | a Hirono, T.u Tokyo Institute of Technology4 aut |
| 700 | 1 | a Kuzuhara, M.u National Astronomical Observatory of Japan,National Institutes of Natural Sciences (NINS)4 aut |
| 700 | 1 | a Csizmadia, Sz.u Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)4 aut |
| 700 | 1 | a Nowak, G.u Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna4 aut |
| 700 | 1 | a Endl, M.u The University of Texas at Austin, USA4 aut |
| 700 | 1 | a Grziwa, S.u Universität zu Köln,University of Cologne4 aut |
| 700 | 1 | a Korth, J.u Universität zu Köln,University of Cologne4 aut0 (Swepub:lu)ju7237ko |
| 700 | 1 | a Pfaff, J.u Technische Universität Berlin4 aut |
| 700 | 1 | a Bitsch, B.u Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science4 aut0 (Swepub:lu)astr-mda |
| 700 | 1 | a Johansen, A.u Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science4 aut0 (Swepub:lu)astr-amu |
| 700 | 1 | a Mustill, A. J.u Lunds universitet,Lund University4 aut |
| 700 | 1 | a Davies, M. B.u Lunds universitet,Lund University4 aut |
| 700 | 1 | a Deeg, H.u Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias4 aut |
| 700 | 1 | a Palle, E.u Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna4 aut |
| 700 | 1 | a Cochran, W. D.u The University of Texas at Austin, USA4 aut |
| 700 | 1 | a Eigmüller, P.u Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)4 aut |
| 700 | 1 | a Erikson, A.u Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)4 aut |
| 700 | 1 | a Guenther, E. W.u Thüringer Landessternwarte Tautenburg4 aut |
| 700 | 1 | a Hatzes, A.u Thüringer Landessternwarte Tautenburg4 aut |
| 700 | 1 | a Kiilerich, A.u Massachusetts Institute of Technology (MIT),Århus Universitet,Aarhus University,Princeton University4 aut |
| 700 | 1 | a Kudo, T.u National Astronomical Observatory of Japan4 aut |
| 700 | 1 | a MacQueen, P.u The University of Texas at Austin, USA4 aut |
| 700 | 1 | a Narita, N.u University of Tokyo, Japan,National Astronomical Observatory of Japan,National Institutes of Natural Sciences (NINS)4 aut |
| 700 | 1 | a Nespral, D.u Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna4 aut |
| 700 | 1 | a Patzold, M.u Universität zu Köln,University of Cologne4 aut |
| 700 | 1 | a Prieto-Arranz, J.u Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna4 aut |
| 700 | 1 | a Rauer, H.u Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR),Technische Universität Berlin4 aut |
| 700 | 1 | a Van Eylen, V.4 aut |
| 710 | 2 | a Chalmers tekniska högskolab Pufendorfinstitutet4 org |
| 773 | 0 | t Astronomy and Astrophysicsd : EDP Sciencesg 604, s. A16-q 604<A16-x 0004-6361x 1432-0746 |
| 856 | 4 | u http://publications.lib.chalmers.se/records/fulltext/250935/local_250935.pdfx primaryx freey FULLTEXT |
| 856 | 4 | u https://www.aanda.org/articles/aa/pdf/2017/08/aa30822-17.pdf |
| 856 | 4 | u https://arxiv.org/abs/1704.08284x freey FULLTEXT |
| 856 | 4 | u http://dx.doi.org/10.1051/0004-6361/201730822y FULLTEXT |
| 856 | 4 8 | u https://doi.org/10.1051/0004-6361/201730822 |
| 856 | 4 8 | u https://research.chalmers.se/publication/250935 |
| 856 | 4 8 | u https://lup.lub.lu.se/record/37ec0d4f-518a-4794-8b1f-062825b2e1b8 |
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