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Pregled bibliografske jedinice broj: 382398

Difference imaging photometry of blended gravitational microlensing events with a numerical kernel


Albrow, M. D.; Horne, K.; Bramich, D. M.; Fouque, P.; Miller, V. R.; Beaulieu, J.-P.; Coutures, C.; Menzies, J.; Williams, A.; Batista, V. et al.
Difference imaging photometry of blended gravitational microlensing events with a numerical kernel // Monthly notices of the Royal Astronomical Society, 397 (2009), 4; 2099-2105 doi:10.1111/j.1365-2966.2009.15098.x (međunarodna recenzija, članak, znanstveni)


Naslov
Difference imaging photometry of blended gravitational microlensing events with a numerical kernel

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.

Izvornik
Monthly notices of the Royal Astronomical Society (0035-8711) 397 (2009), 4; 2099-2105

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
316-0000000-2824 - Dijagnostika i fizička svojstva cirkumstelarne tvari (Dubravka Kotnik-Karuza, )

Ustanove
Sveučilište u Rijeci - Odjel za fiziku

Autor s matičnim brojem:
Dijana Dominis Prester, (241452)

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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