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http://hdl.handle.net/20.500.12386/30523
Titolo: | Detection of a planet in the sdB + M dwarf binary system 2M 1938+4603 | Autori: | Baran, A. S. Zola, S. Blokesz, A. Østensen, R. H. SILVOTTI, Roberto |
Data pubblicazione: | 2015 | Rivista: | ASTRONOMY & ASTROPHYSICS | Numero: | 577 | Da pagina:: | A146 | Abstract: | We analyze 37 months of Kepler photometry of 2M 1938+4603, a binary system with a pulsating hot subdwarf primary and an M-dwarf companion that shows strong reflection effect. We measured the eclipse timings from more than 16 000 primary and secondary eclipses and discovered a periodic variation in the timing signal that we ascribe to a third body in the system. We also discovered a significant long-term trend that may be an evolutionary effect or a hint of more bodies. Upon the assumption that the third body is orbiting in the same plane as the primary, we establish that it must be a Jupiter-mass object orbiting with a period of 416 days at a distance of 0.92 AU. This mass is the lowest among all tertiary components detected in similar systems. | URI: | http://hdl.handle.net/20.500.12386/30523 | URL: | https://www.aanda.org/articles/aa/full_html/2015/05/aa25392-14/aa25392-14.html | ISSN: | 0004-6361 | DOI: | 10.1051/0004-6361/201425392 | Bibcode ADS: | 2015A&A...577A.146B | Fulltext: | open |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista |
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