Eigmueller, Philipp, Csizmadia, Szilard, Endl, Michael, Gandolfi, Davide, Cochran, William D., Yong, David, Smith, Alexis M. S., Cabrera, Juan ORCID: 0000-0001-6653-5487, Deeg, Hans J., Johnson, Marshall C., Korth, Judith ORCID: 0000-0002-0076-6239, Nespral, David, Prieto-Arranz, Jorge and Hatzes, Artie P. (2018). A transiting M-dwarf showing beaming effect in the field of Ruprecht 147. Mon. Not. Roy. Astron. Soc., 480 (3). S. 3864 - 3871. OXFORD: OXFORD UNIV PRESS. ISSN 1365-2966

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Abstract

We report the discovery and characterization of an eclipsing M5Vdwarf star, orbiting a slightly evolved F7V main sequence star. In contrast to previous claims in the literature, we confirm that the system does not belong to the galactic open cluster Ruprecht 147. We determine its fundamental parameters combining K2 time-series data with spectroscopic observations from the McDonald Observatory, FIES@NOT, and HIRES@KECK. The very precise photometric data from the K2 mission allows us to measure variations caused by the beaming effect (relativistic doppler boosting), ellipsoidal variation, reflection, and the secondary eclipse. We determined the radial velocity using spectroscopic observations and compare it to the radial velocity determined from the beaming effect observed in the photometric data. The M5V star has a radius of 0.200(-0.008)(+0.007) R-circle dot and a mass of 0.187(-0.013)(+0.012) M-circle dot. The primary star has a radius of 1.518(-0.049)(+0.038) R-circle dot and a mass of 1.008(-0.097)(+0.081) M-circle dot. The orbital period is 5.441995 +/- 0.000007 d. The system is one of the few eclipsing systems with observed beaming effect and spectroscopic radial velocity measurements and it can be used as a test case for the modelling of the beaming effect. Current and forthcoming space missions such as TESS and PLATO might benefit from the analysis of the beaming effect to estimate the mass of transiting companions without the need for radial velocity follow up observations, provided that the systematic sources of noise affecting this method are well understood.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Eigmueller, PhilippUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Csizmadia, SzilardUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Endl, MichaelUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gandolfi, DavideUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cochran, William D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Yong, DavidUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Smith, Alexis M. S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cabrera, JuanUNSPECIFIEDorcid.org/0000-0001-6653-5487UNSPECIFIED
Deeg, Hans J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Johnson, Marshall C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Korth, JudithUNSPECIFIEDorcid.org/0000-0002-0076-6239UNSPECIFIED
Nespral, DavidUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Prieto-Arranz, JorgeUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hatzes, Artie P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-167956
DOI: 10.1093/mnras/sty2155
Journal or Publication Title: Mon. Not. Roy. Astron. Soc.
Volume: 480
Number: 3
Page Range: S. 3864 - 3871
Date: 2018
Publisher: OXFORD UNIV PRESS
Place of Publication: OXFORD
ISSN: 1365-2966
Language: English
Faculty: Faculty of Mathematics and Natural Sciences
Divisions: Externe Einrichtungen > An-Institute > Associated Institutes of the Faculty of Mathematics and Natural Sciences > Rhenish Institute for Environmental Research - RIU
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
OPEN CLUSTERS; BINARY STARS; LIGHT CURVES; K2 MISSION; KEPLER; TELESCOPE; COMPANION; JUPITER; CATALOG; PLANETMultiple languages
Astronomy & AstrophysicsMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/16795

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