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Pregled bibliografske jedinice broj: 641926

Časopis

Autori: Yee, J.C.; ...; Dominis Prester, Dijana; ...; Wambsgans, J.
Naslov: MOA-2010-BLG-311 : A Planetary Candidate below the Threshold of Reliable Detection
Izvornik: The Astrophysical journal (0004-637X) 769 (2013), 1; 77-1-77-13
Vrsta rada: članak
Ključne riječi: Galaxy: bulge; gravitational lensing: micro; planets and satellites: detection
Sažetak:
We analyze MOA-2010-BLG-311, a high magnification (A max > 600) microlensing event with complete data coverage over the peak, making it very sensitive to planetary signals. We fit this event with both a point lens and a two-body lens model and find that the two-body lens model is a better fit but with only Δχ2 ~ 80. The preferred mass ratio between the lens star and its companion is q = 10-3.7 ± 0.1, placing the candidate companion in the planetary regime. Despite the formal significance of the planet, we show that because of systematics in the data the evidence for a planetary companion to the lens is too tenuous to claim a secure detection. When combined with analyses of other high-magnification events, this event helps empirically define the threshold for reliable planet detection in high-magnification events, which remains an open question.
Projekt / tema: 316-0000000-2824
Izvorni jezik: ENG
Rad je indeksiran u
bazama podataka:
Current Contents Connect (CCC)
Scopus
SCI-EXP, SSCI i/ili A&HCI
Science Citation Index Expanded (SCI-EXP) (sastavni dio Web of Science Core Collectiona)
Kategorija: Znanstveni
Znanstvena područja:
Fizika
Puni text rada: 641926.1210.6041v3.pdf (tekst priložen 27. Kol. 2014. u 13:25 sati)
URL Internet adrese: http://arxiv.org/abs/1210.6041
http://adsabs.harvard.edu/abs/2013ApJ...769...77Y
URL cjelovitog teksta:
Google Scholar: MOA-2010-BLG-311 : A Planetary Candidate below the Threshold of Reliable Detection
Upisao u CROSBI: Dijana Dominis Prester (dijana@phy.uniri.hr), 14. Ruj. 2013. u 03:54 sati



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