First speckle interferometric measurements of binary stars at the Observatorio Astrofisico Guillermo Haro
Por:
Guerrero C.A., Rosales-Ortega F.F., Escobedo G., Martínez J., Castillo E., García-Flores P., Nieto-Suárez M.A.
Publicada:
1 jun 2020
Resumen:
In this paper, we present the first multiband speckle interferometric
measurements of binary stars performed using the 2.1 m telescope of the
Observatorio Astrofisico Guillermo Haro, Cananea, Sonora, Mexico. We
describe here FICCO: Fast Imaging Camera for Cananea Observatory, a new
instrument developed to perform speckle observations from the Northern
Hemisphere. We tested this new instrument with objects from the
Washington Double Star Catalog, that were observed during three runs
allocated in 2019. We report 480 astrometric measurements of 138 pairs,
with angular separations ranging from 0.06 to 5.76 arcsec, including 347
measurements with separations smaller than 1 arcsec. We estimated a mean
error in separation of 14 mas, 1.6 degrees in position angle, and 0.45
mag for the magnitude difference. We confirmed 12 double stars
discovered by Hipparcos. Finally, we present a correction to four
previously published orbital solutions of visual binaries.
Filiaciones:
Guerrero C.A.:
Univ Nacl Autonoma Mexico, Observ Astron Nacl, Apartado Postal 877, Ensenada 22800, BC, Mexico
Rosales-Ortega F.F.:
Inst Nacl Astrofis Opt & Electr, Calle Luis Enrique Erro 1, Puebla 72840, Mexico
Escobedo G.:
Inst Nacl Astrofis Opt & Electr, Calle Luis Enrique Erro 1, Puebla 72840, Mexico
Martínez J.:
Inst Nacl Astrofis Opt & Electr, Observ Astrofis Guillermo Haro, Ave Sinaloa 25, Cananea 8462, Sonora, Mexico
Castillo E.:
Inst Nacl Astrofis Opt & Electr, Calle Luis Enrique Erro 1, Puebla 72840, Mexico
SRON Netherlands Inst Space Res, Landleven 12, NL-9747 AD Groningen, Netherlands
García-Flores P.:
Inst Nacl Astrofis Opt & Electr, CONACyT, Calle Luis Enrique Erro 1, Puebla, Mexico
Nieto-Suárez M.A.:
Inst Nacl Astrofis Opt & Electr, Calle Luis Enrique Erro 1, Puebla 72840, Mexico
All Open Access; Bronze
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