Binary Lenses in OGLE-III EWS Database. Season 2004

• Autorzy: Jaroszyński M. , Skowron J. , Udalski A. , Kubiak M. , Szymański M. K. , Pietrzyński G. , Soszyński I. , Żebruń K. , Szewczyk O. , Wyrzykowski Ł.
• Języki publikacji: EN

Abstrakty

EN

We present 19 binary lens candidates from OGLE-III Early Warning System database for the season of 2004. We have also found five events interpreted as single mass lensing of double sources. The candidates have been selected by visual light curves inspection. Examining the models of binary lenses of this and our previous studies (10 caustic crossing events of OGLE-II seasons 1997-1999 and 15 binary lens events of OGLE-III seasons 2002-2003) we find one case of extreme mass ratio binary (q≈0.005, a known planetary lens OGLE 2003-BLG-235/MOA 2003-BLG-53) and almost all other models with mass ratios in the range 0.1

Słowa kluczowe

EN

Gravitational lensing; Galaxy: center; binaries: general

• Wydawca: Copernicus Foundation for Polish Astronomy
• Czasopismo: Acta Astronomica
• Rocznik: 2006
• Tom: Vol. 56, No. 4
• Strony: 307--332
• Opis fizyczny: Bibliogr. 22 poz., tab., wykr.

Twórcy

autor

Jaroszyński M.

• Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland

autor

Skowron J.

• Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland

autor

Udalski A.

• Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland

autor

Kubiak M.

• Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland

autor

Szymański M. K.

• Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland

autor

Pietrzyński G.

• Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland

autor

Soszyński I.

• Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland

autor

Żebruń K.

• Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland

autor

Szewczyk O.

• Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland

autor

Wyrzykowski Ł.

• Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland

Bibliografia

• Alard, C. 2000, Astron. Astrophys. Suppl. Ser., 144, 363.
• Alard, C., and Lupton, R.H. 1998, Astrophys. J., 503, 325.
• Albrow, M.D., et al. 1999, Astrophys. J., 522, 1022.
• Alcock, C., et al. 2000, Astrophys. J., 541, 270.
• An, J.H., et al. 2002, Astrophys. J., 572, 521.
• Beaulieu, J.-P., et al. 2006, Nature, 439, 437.
• Bond, I.A., et al. 2004, Astrophys. J. Letters, 606, L155.
• DiStefano, R., and Mao, S. 1996, Astrophys. J., 457, 93.
• Dominik, M. 1998, Astron. Astrophys., 333, L79.
• Gaudi, B.S., and Han, Ch. 2004, Astrophys. J., 611, 528.
• Gould, A., et al. 2006, Astrophys. J. Letters, 644, L37.
• Jaroszyński, M. 2002, Acta Astron., 52, 39 (Paper I).
• Jaroszyński, M., Udalski, A., Kubiak, M., Szymański, M., Pietrzyński, G., Soszyński, I., Żebruń, K., Szewczyk, O., and Wyrzykowski, Ł. 2004, Acta Astron., 54, 103 (Paper II).
• Mao, S., and DiStefano, R. 1995, Astrophys. J., 440, 22.
• Mao, S., and Loeb, A. 2001, Astrophys. J. Letters, 547, L97.
• Mao, S., and Paczyński, B. 1991, Astrophys. J. Letters, 374, L37.
• Paczyński, B. 1996, Ann. Rev. Astron. Astrophys., 34, 419, “Gravitational Lenses”, Springer, Berlin.
• Schneider, P., and Weiss, A. 1986, Astron. Astrophys., 164, 237.
• Udalski, A. 2003, Acta Astron., 53, 291.
• Udalski, A., et al. 2005, Astrophys. J. Letters, 628, L109.
• Udalski, A., Szymański, M., Kaluzny, J., Kubiak, M., Mateo, M., Krzemiński, W., and Paczyński, B. 1994, Acta Astron., 44, 227.
• Wyrzykowski, Ł. 2005, PhD Thesis, Warsaw University Astronomical Observatory.