Strömgren uvby – β photoelectric photometry of the variable stars RU PSC, SS PSC and TU UMa¹

 

J. H. Peña,² R. Figuera Jaimes,² M. Chow,^3,4 R. Peña Miller,⁵ and M. Álvarez⁶

 

² Instituto de Astronomía, Universidad Nacional Autónoma de México, Apdo. Postal 70–264, México, D. F. 04510, México (jhpena@astroscu.unam.mx; rfiguera@ula.ve).

^3,4 Observatorio Astronómico de la Universidad Nacional Autónoma de Nicaragua UNAN–MANAGUA, Recinto Universitario Rubén Darío (RURD), Escuela de Física, Apdo. Postal 663 and Departamento de Astronomía de la Universidad de Guanajuato, Apdo. Postal 144, 36000 Guanajuato, Guanajuato, México (marcel@astro.ugto.mx).

⁵ Geoffrey Pope Building, Biosciences, College of Life and Environmental Sciences, University of Exeter, Stocker Road, Exeter, EX4 4QD, UK (R.Pena–Miller@exeter.ac.uk).

⁶ Observatorio Astronómico Nacional, Universidad Nacional Autónoma de México, México (alvarez@astrosen.unam.mx).

 

Received 2012 February 9.
Accepted 2012 August 15.

 

RESUMEN

Se reporta fotometría uvby — β de Stromgren para las estrellas RU y SS Piscium y TU UMa.

 

ABSTRACT

Strömgren uvby — β photoelectric photometry of the stars RU Piscium, SS Piscium and TU UMa is reported.

Key Words: stars: individual (RU Piscium, SS Piscium, TU Uma) — stars: variables: RR Lyrae — techniques: photometry.

 

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ACKNOWLEDGMENTS

We would like thank the staff of the OAN and E. Torres, of the CCH–Sur for their assistance with the observations. This work was partially supported by Papiit IN108106 and IN114309. J. Miller and J. Orta did the proofreading and typing, respectively. C. Guzmán, A. Diaz and F. Ruiz assisted with the computing. One of us, M. Chow, thanks MSc. Francisco Guzmán P. of the UNAN–Managua for the travel funds provided and is grateful for the hospitality of the Universidad Nacional Autónoma de México. This article has made use of the SIM–BAD database operated at CDS, Strasbourg, France and ADS, NASA Astrophysics Data Systems hosted by Harvard–Smithsonian Center for Astrophysics.

 

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NOTE

¹ Based on observations collected at the San Pedro Mártir Observatory, México.