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Pregled bibliografske jedinice broj: 382398

Časopis

Autori: Albrow, M. D.; Horne, K.; Bramich, D. M.; Fouque, P.; Miller, V. R.; Beaulieu, J.-P.; Coutures, C.; Menzies, J.; Williams, A.; Batista, V.; Bennett, D. P.; Brillant, S.; Cassan, A.; Cook, K. H.; Dieters, S.; Dominis Prester, Dijana; Donatowicz, J.; Greenhill, J.; Kains, N.; Kane, S.; Kubas, D.; Marquette, J. B.; Pollard, K. R.; Sahu, K. C.; Tsapras, Y.; Wambsganss, J.; Zub, M.
Naslov: Difference imaging photometry of blended gravitational microlensing events with a numerical kernel
Izvornik: Monthly notices of the Royal Astronomical Society (0035-8711) 397 (2009), 4; 2099-2105
Vrsta rada: članak
Ključne riječi: stars; statistical models; image processing techniques; photometric techniques
Sažetak:
The numerical kernel approach to difference imaging has been implemented and applied to gravitational microlensing events observed by the PLANET collaboration. A new algorithm is presented for determining the precise coordinates of the microlens in blended events, essential for accurate photometry of difference images. It is shown how the photometric reference flux can be obtained from measurements of the difference images combined with knowledge of the statistical flux uncertainties. An analysis of difference-imaging photometry of SAAO images of the moderate-magnifcation microlensing event OGLE 2008-BLG-229, reveals a systematic residual pattern in ISIS photometry that is not present in photometry from our new code. We draw attention to the fact that such residuals have the potential to be misinterpreted as planetary signals.
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://www3.interscience.wiley.com/journal/122516122/abstract
http://www3.interscience.wiley.com/user/accessdenied?ID=122516122&Act=2138&Code=4719&Page=/cgi-bin/fulltext/122516122/PDFSTART
Broj citata:
Altmetric:
DOI: 10.1111/j.1365-2966.2009.15098.x
URL cjelovitog teksta:
Google Scholar: Difference imaging photometry of blended gravitational microlensing events with a numerical kernel
Upisao u CROSBI: dijana@uniri.hr (dijana@uniri.hr), 17. Vel. 2009. u 15:50 sati



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