crta
Hrvatska znanstvena Sekcija img
bibliografija
3 gif
 Naslovna
 O projektu
 FAQ
 Kontakt
4 gif
Pregledavanje radova
Jednostavno pretraživanje
Napredno pretraživanje
Skupni podaci
Upis novih radova
Upute
Ispravci prijavljenih radova
Ostale bibliografije
Slični projekti
 Bibliografske baze podataka

Pregled bibliografske jedinice broj: 527744

Časopis

Autori: Shin, I.-G.; ...; Dominis Prester, D.; ...
Naslov: OGLE-2005-BLG-018: Characterization of Full Physical and Orbital Parameters of a Gravitational Binary Lens
Izvornik: Astrophsical Journal (0004-637X) 735 (2011), 2; 85-104
Vrsta rada: članak
Ključne riječi: binaries: general – gravitational lensing: micro
Sažetak:
We present the analysis result of a gravitational binary-lensing event OGLE-2005- BLG-018. The light curve of the event is characterized by 2 adjacent strong features and a single weak feature separated from the strong features. The light curve exhibits noticeable deviations from the best-fit model based on standard binary parameters. To explain the deviation, we test models including various higher-order effects of the motions of the observer, source, and lens. From this, we find that it is necessary to account for the orbital motion of the lens in describing the light curve. From modeling of the light curve considering the parallax effect and Keplerian orbital motion, we are able to measure not only the physical parameters but also a complete orbital solution of the lens system. It is found that the event was produced by a binary lens located in the Galactic bulge with a distance 6.7 ± 0.3 kpc from the Earth. The individual lens components with masses 0.9±0.3 M⊙ and 0.5±0.1 M⊙ are separated with a semi-major axis of a = 2.5 ± 1.0 AU and orbiting each other with a period P = 3.1 ± 1.3 yr. The event demonstrates that it is possible to extract detailed information about binary lens systems from well-resolved lensing light curves.
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://iopscience.iop.org/0004-637X/735/2/85
Broj citata:
Altmetric:
DOI: 10.1088/0004-637X/735/2/85
URL cjelovitog teksta:
Google Scholar: OGLE-2005-BLG-018: Characterization of Full Physical and Orbital Parameters of a Gravitational Binary Lens
Upisao u CROSBI: dijana@uniri.hr (dijana@uniri.hr), 29. Ruj. 2011. u 10:12 sati
Napomene:
The OGLE Collaboration ; The μFUN Collaboration ; The PLANET/RoboNet Collaborations



  Verzija za printanje   za tiskati


upomoc
foot_4