The Optical Gravitational Lensing Experiment. Additional Planetary and Low-Luminosity Object Transits from the OGLE 2001 and 2002 Observational Campaigns

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

Abstrakty

EN

The photometric data collected by OGLE-III during the 2001 and 2002 observational campaigns aiming at detection of planetary or low-luminosity object transits were corrected for small scale systematic effects using the data pipeline by Kruszewski and Semeniuk and searched again for low amplitude transits. Sixteen new objects with small transiting companions, additional to previously found samples, were discovered. Most of them are small amplitude cases which remained undetected in the original data. Several new objects seem to be very promising candidates for systems containing substellar objects: extrasolar planets or brown dwarfs. Those include OGLE-TR-122, OGLE-TR-125, OGLE-TR-130, OGLE-TR-131 and a few others. Those objects are particularly worth spectroscopic follow-up observations for radial velocity measurements and mass determination. With well known photometric orbit only a few RV measurements should allow to confirm their actual status. All photometric data of presented objects are available to the astronomical community from the OGLE Internet archive.

Słowa kluczowe

EN

planetary systems; stars: low-mass; stars: brown dwarfs; binaries: eclipsing

• Wydawca: Copernicus Foundation for Polish Astronomy
• Czasopismo: Acta Astronomica
• Rocznik: 2003
• Tom: Vol. 56, No. 2
• Strony: 133--149
• Opis fizyczny: Bibliogr. 10 poz., tab., wykr.

Twórcy

autor

Udalski A.

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

autor

Pietrzyński G.

• Universidad de Concepción, Departamento de Fisica, Casilla 160-C, Concepción, Chile
• Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland

autor

Szymański M.

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

autor

Kubiak M.

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

autor

Żebruń K.

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

autor

Soszyński I.

• 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

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• Sirko, E., and Paczy´nski, B. 2003, Astrophys. J., in press; astro-ph/0302175.
• Udalski, A., Paczyński, B., Żebruń, K., Szymański, M., Kubiak, M., Soszyński, I., Szewczyk, O., Wyrzykowski, Ł., and Pietrzyński, G. 2002a, Acta Astron., 52, 1.
• Udalski, A., Żebruń, K., Szymański, M., Kubiak, M., Soszyński, I., Szewczyk, O., Wyrzykowski, Ł., and Pietrzyński, G. 2002b, Acta Astron., 52, 115.
• Udalski, A., Szewczyk, O., Żebruń, K., Pietrzyński, G., Szymański, M., Kubiak, M., Soszyński, I., and Wyrzykowski, Ł. 2002c, Acta Astron., 52, 317.
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