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Pregled bibliografske jedinice broj: 696189

Časopis

Autori: Bozza, V.; ...; Dominis Prester, Dijana; ...; Vaisanen, P.
Naslov: OGLE-2008-BLG-510: first automated real-time detection of a weak microlensing anomaly - brown dwarf or stellar binary?
Izvornik: Monthly notices of the Royal Astronomical Society (0035-8711) 440 (2012); 530-535
Vrsta rada: članak
Ključne riječi: gravitational lensing: micro; planetary systems
Sažetak:
The microlensing event OGLE-2008-BLG-510 is characterized by an evident asymmetric shape of the peak, promptly detected by the Automated Robotic Terrestrial Exoplanet Microlensing Search (ARTEMiS) system in real time. The skewness of the light curve appears to be compatible both with binary-lens and binary-source models, including the possibility that the lens system consists of an M dwarf orbited by a brown dwarf. The detection of this microlensing anomaly and our analysis demonstrate that: (1) automated real-time detection of weak microlensing anomalies with immediate feedback is feasible, efficient and sensitive, (2) rather common weak features intrinsically come with ambiguities that are not easily resolved from photometric light curves, (3) a modelling approach that finds all features of parameter space rather than just the favourite model is required and (4) the data quality is most crucial, where systematics can be confused with real features, in particular small higher order effects such as orbital motion signatures. It moreover becomes apparent that events with weak signatures are a silver mine for statistical studies, although not easy to exploit. Clues about the apparent paucity of both brown-dwarf companions and binary-source microlensing events might hide here.
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/1203.1291
http://adsabs.harvard.edu/abs/2012MNRAS.424..902B
Broj citata:
Altmetric:
DOI: 10.1111/j.1365-2966.2012.21233.x
URL cjelovitog teksta:
Google Scholar: OGLE-2008-BLG-510: first automated real-time detection of a weak microlensing anomaly - brown dwarf or stellar binary?
Upisao u CROSBI: Dijana Dominis Prester (dijana@phy.uniri.hr), 7. Svi. 2014. u 19:05 sati



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