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| Main Author: | |
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| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidad Nacional Autónoma de México
2022
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| Subjects: | |
| Online Access: | https://www.redalyc.org/articulo.oa?id=57175492009 https://www.redalyc.org/journal/571/57175492009/ https://www.redalyc.org/journal/571/57175492009/html/ https://www.redalyc.org/journal/571/57175492009/57175492009.epub https://www.redalyc.org/journal/571/57175492009/movil |
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Table of Contents:
- CCD Photometry and Evolutionary Status of the Hads Variable PT COM K. B. Alton Física, Astronomía y Matemáticas Stars: evolution stars: oscillations stars: variables: Delta Scuti Multi-color (BV Ic) CCD-derived photometric data were acquired from PT Com, a pulsating variable classified as a high amplitude δ Scuti-type system. Analysis of precise time-series lightcurve data was accomplished using discrete Fourier transformation which revealed a mean fundamental mode (f 0) of oscillation at 12.178364 ± 0.000083 d-1 along with at least three other partial harmonics (2f 0, 3f 0 and 4f 0). No other statistically significant frequency shared by all bandpasses was resolved following successive pre-whitening of each residual signal. A secular analysis of the fundamental pulse period since 1999 was facilitated by the addition of 35 new times-of-maximum. The evolutionary status, age and physical nature of PT Com were investigated using the PAdova & TRieste Stellar Evolution Code for generating stellar tracks and isochrones. 2022 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57175492009 https://www.redalyc.org/journal/571/57175492009/ https://www.redalyc.org/journal/571/57175492009/html/ https://www.redalyc.org/journal/571/57175492009/57175492009.epub https://www.redalyc.org/journal/571/57175492009/movil 10.22201/ia.01851101p.2022.58.01.09 en http://www.redalyc.org/revista.oa?id=571 Revista Mexicana de Astronomía y Astrofísica application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Astronomía y Astrofísica (México) Num.1 Vol.58