FUNCTIONAL RELATIONSHIPS FOR Teff AND log g IN F-G SUPERGIANTS FROM uvby - B PHOTOMETRY
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| Natura: | Artículo científico |
| Lingua: | en |
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Universidad Nacional Autónoma de México
2010
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| _version_ | 1876428727872651264 |
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| author | A. Arellano Ferro |
| author_facet | A. Arellano Ferro |
| contents | FUNCTIONAL RELATIONSHIPS FOR Teff AND log g IN F-G SUPERGIANTS FROM uvby - B PHOTOMETRY A. Arellano Ferro Física, Astronomía y Matemáticas AGB supergiants Stars: AGB and post techniques: photometric From photoelectric uvby - data and recent accurate synthetic and spectroscopic values of Teff and log g for 50 F-G supergiants, we have calculated functional relationships that lead to initial estimates of effective temperature and gravities for these types of stars. It is shown that while the Teff relationships are calculated using the data on young massive supergiants, they are also valid for evolved stars of similar temperatures like post-AGB and RV Tau stars. The gravity can also be predicted from the [c1] index with an uncertainty of about 0.26 dex. Although a clear and significant trend between MV and [c1] is seen, no calibration is found that predicts accurate values of MV . 2010 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57115522011 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.2 Vol.46 |
| format | Artículo científico |
| id | redalyc_57115522011 |
| institution | Redalyc |
| language | en |
| publishDate | 2010 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | FUNCTIONAL RELATIONSHIPS FOR Teff AND log g IN F-G SUPERGIANTS FROM uvby - B PHOTOMETRY A. Arellano Ferro Física, Astronomía y Matemáticas AGB supergiants Stars: AGB and post techniques: photometric FUNCTIONAL RELATIONSHIPS FOR Teff AND log g IN F-G SUPERGIANTS FROM uvby - B PHOTOMETRY A. Arellano Ferro Física, Astronomía y Matemáticas AGB supergiants Stars: AGB and post techniques: photometric From photoelectric uvby - data and recent accurate synthetic and spectroscopic values of Teff and log g for 50 F-G supergiants, we have calculated functional relationships that lead to initial estimates of effective temperature and gravities for these types of stars. It is shown that while the Teff relationships are calculated using the data on young massive supergiants, they are also valid for evolved stars of similar temperatures like post-AGB and RV Tau stars. The gravity can also be predicted from the [c1] index with an uncertainty of about 0.26 dex. Although a clear and significant trend between MV and [c1] is seen, no calibration is found that predicts accurate values of MV . 2010 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57115522011 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.2 Vol.46 |
| title | FUNCTIONAL RELATIONSHIPS FOR Teff AND log g IN F-G SUPERGIANTS FROM uvby - B PHOTOMETRY |
| topic | Física, Astronomía y Matemáticas AGB supergiants Stars: AGB and post techniques: photometric |
| url | https://www.redalyc.org/articulo.oa?id=57115522011 |