Hrvatska znanstvena bibliografija (CROSBI)



Pregled bibliografske jedinice broj: 619093

Časopis

Autori: Shin, I.-G.; ...; Dominis Prester, Dijana; ... Zimmer, F.
Naslov: Microlensing Binaries Discovered through High-magnification Channel
Izvornik: The Astrophysical journal (0004-637X) 746 (2012), 2; 127-1-127-13
Vrsta rada: članak
Ključne riječi: binaries: general; gravitational lensing: micro
Sažetak:
Microlensing can provide a useful tool to probe binary distributions down to low-mass limits of binary companions. In this paper, we analyze the light curves of eight binary-lensing events detected through the channel of high-magnification events during the seasons from 2007 to 2010. The perturbations, which are confined near the peak of the light curves, can be easily distinguished from the central perturbations caused by planets. However, the degeneracy between close and wide binary solutions cannot be resolved with a 3σ confidence level for three events, implying that the degeneracy would be an important obstacle in studying binary distributions. The dependence of the degeneracy on the lensing parameters is consistent with a theoretical prediction that the degeneracy becomes severe as the binary separation and the mass ratio deviate from the values of resonant caustics. The measured mass ratio of the event OGLE-2008-BLG-510/MOA-2008-BLG-369 is q ~ 0.1, making the companion of the lens a strong brown dwarf candidate.
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://cdsads.u-strasbg.fr/abs/2012ApJ...746..127S
http://iopscience.iop.org/0004-637X/746/2/127/article
Broj citata:
Altmetric:
DOI: 10.1088/0004-637X/746/2/127
URL cjelovitog teksta:
Google Scholar: Microlensing Binaries Discovered through High-magnification Channel
Upisao u CROSBI: Dijana Dominis Prester (dijana@phy.uniri.hr), 20. Vel. 2013. u 14:08 sati
Napomene:
The MiNDSTEp Consortium.