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Pregled bibliografske jedinice broj: 527895

Časopis

Autori: Muraki, Y.; ...; Dominis Prester, Dijana; ...; Soszynski, I.
Naslov: Discovery and Mass Measurements of a Cold, 10-Earth Mass Planet and Its Host Star
Izvornik: Astrophysical Journal (0004-637X) 741 (2011), 1; 22-60
Vrsta rada: članak
Ključne riječi: gravitational lensing: micro; planetary systems
Sažetak:
We present the discovery and mass measurement of the cold, low-mass planet MOA-2009-BLG-266Lb, made with the gravitational microlensing method. This planet has a mass of m_p = 10.4 +- 1.7 Earth masses and orbits a star of mass M_* = 0.56 +- 0.09 Solar masses at a semi-major axis of a = 3.2 (+1.9 -0.5) AU and an orbital period of P = 7.6 (+7.7 -1.5}; ; ; ; yrs. The planet and host star mass measurements are enabled by the measurement of the microlensing parallax effect, which is seen primarily in the light curve distortion due to the orbital motion of the Earth. But, the analysis also demonstrates the capability to measure microlensing parallax with the Deep Impact (or EPOXI) spacecraft in a Heliocentric orbit. The planet mass and orbital distance are similar to predictions for the critical core mass needed to accrete a substantial gaseous envelope, and thus may indicate that this planet is a "failed" gas giant. This and future microlensing detections will test planet formation theory predictions regarding the prevalence and masses of such planets.
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
URL Internet adrese: http://arxiv.org/abs/1106.2160
http://adsabs.harvard.edu/abs/2011arXiv1106.2160M
URL cjelovitog teksta:
Google Scholar: Discovery and Mass Measurements of a Cold, 10-Earth Mass Planet and Its Host Star
Upisao u CROSBI: dijana@uniri.hr (dijana@uniri.hr), 29. Ruj. 2011. u 22:48 sati
Napomene:
OGLE Collaboration



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