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M. A. Hobart

Universidad Veracruzana

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Publication

Featured researches published by M. A. Hobart.

Publications of the Astronomical Society of the Pacific | 2002

Physical Parameter Determination of the δ Scuti Star V1719 Cygni

J. H. Pena; M. Paparó; R. Peniche; Rodriguez Mp; M. A. Hobart; C. de la Cruz; A. García-Cole

New uvbyβ photoelectric photometry of the short-period variable star V1719 Cygni (HD 200925) has been secured. A period analysis of these data and those reported in the literature has provided us with stable pulsation frequencies that fit all the available observations covering a time span of 20 yr. The frequencies determined are 3.7411556, 7.4823111, 11.2234667, and 4.6777749 cycles day–1 and of smaller amplitude 8.4189900 cycles day–1. It was found that this Population I star has log g around 3.1 and an effective temperature of 6750 K.

Revista Mexicana De Astronomia Y Astrofisica | 1987

Period variations in SX Phe stars: CY Aqr, DY Peg and HD 94033

J. H. Penal; R. Penichel; S. F. Gonzalez; M. A. Hobart

An analysis of the times of maximum light of three SX Phe star was carried out. The results support a monotonous decrement of the period which is consistent with the theoretical models of pre-white-dwarfs of 0.2 Mo.

Revista Mexicana De Astronomia Y Astrofisica | 2005

uvby photometry of the RR Lyrae star AC And

J. H. Pena; R. Peniche; M. A. Hobart; C. de la Cruz; A.A Gallegos

Revista Mexicana De Astronomia Y Astrofisica | 2003

tex2html_wrap_inlineuvbyb#beta; Photoelectric Photometry of the Open Cluster NGC823

J. H. Pena; A. Garcia-Cole; M. A. Hobart; Carlos A. Cruz; J. C. Plascencia; R. Peniche

Archive | 1999

Estudio de los parámetros geométricos de sistemas estelares eclipsantes

César de la Cruz Laso; M. A. Hobart; José Peña H.; María del Rosario Peniche; Ma. del Rosario Hernández Medel

La ciencia y el hombre | 1996

Discriminación en posición y fase de componentes para una serie de tiempo en fotometría estelar y su reducción por regresión lineal mediante un conjunto discreto de combinaciones en sus posiciones

M. A. Hobart; César de la Cruz; José H Peña; María del Rosario Peniche

La ciencia y el hombre | 1995

Observaciones fotométricas y análisis del comportamiento del período del sistema binario de estrellas en contacto SW Lacertae

M. A. Hobart

Revista Mexicana De Astronomia Y Astrofisica | 1994

New interpretations on the variations of V651 Mon.

J. H. Pena; M. A. Hobart

Revista Mexicana De Astronomia Y Astrofisica | 1994

Photometry and Period Behavior of Select W UMA Type Stars

M. A. Hobart; J. H. Pena; R. Peniche; E. Rodriguez; Ruben Garrido; M. Rios-Berumen; M. Rios-Herrera; Omar Lopez-Cruz

Revista Mexicana De Astronomia Y Astrofisica | 1993

Observations and period variation analysis of the W UMa type star SW Lac.

J. H. Pena; M. A. Hobart; E. Rodriguez

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J. H. Pena

National Autonomous University of Mexico

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R. Peniche

National Autonomous University of Mexico

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C. de la Cruz

Universidad Veracruzana

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A. García-Cole

National Autonomous University of Mexico

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A.A Gallegos

Universidad Autónoma Metropolitana

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J. H. Penal

National Autonomous University of Mexico

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Omar Lopez-Cruz

National Institute of Astrophysics

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R Ortega

National Autonomous University of Mexico

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R. Penichel

National Autonomous University of Mexico

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Rodriguez Mp

National Autonomous University of Mexico

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