Accurate luminosities for F–G supergiants from Fe ii / Fe i line depth ratios
Corresponding Author
V. V. Kovtyukh
Astronomical Observatory, Odessa National University, T. G. Shevchenko Park, 65014, Odessa, Ukraine
Isaac Newton Institute of Chile, Odessa Branch, Ukraine
E-mail: [email protected]Search for more papers by this authorF. A. Chekhonadskikh
Astronomical Observatory, Odessa National University, T. G. Shevchenko Park, 65014, Odessa, Ukraine
Isaac Newton Institute of Chile, Odessa Branch, Ukraine
Search for more papers by this authorR. E. Luck
Department of Astronomy, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106-7215, USA
Search for more papers by this authorC. Soubiran
Universit é de Bordeaux - CNRS - Laboratoire d'Astrophysique de Bordeaux, BP 89, 33270 Floirac, France
Search for more papers by this authorM. P. Yasinskaya
Astronomical Observatory, Odessa National University, T. G. Shevchenko Park, 65014, Odessa, Ukraine
Isaac Newton Institute of Chile, Odessa Branch, Ukraine
Search for more papers by this authorS. I. Belik
Astronomical Observatory, Odessa National University, T. G. Shevchenko Park, 65014, Odessa, Ukraine
Isaac Newton Institute of Chile, Odessa Branch, Ukraine
Search for more papers by this authorCorresponding Author
V. V. Kovtyukh
Astronomical Observatory, Odessa National University, T. G. Shevchenko Park, 65014, Odessa, Ukraine
Isaac Newton Institute of Chile, Odessa Branch, Ukraine
E-mail: [email protected]Search for more papers by this authorF. A. Chekhonadskikh
Astronomical Observatory, Odessa National University, T. G. Shevchenko Park, 65014, Odessa, Ukraine
Isaac Newton Institute of Chile, Odessa Branch, Ukraine
Search for more papers by this authorR. E. Luck
Department of Astronomy, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106-7215, USA
Search for more papers by this authorC. Soubiran
Universit é de Bordeaux - CNRS - Laboratoire d'Astrophysique de Bordeaux, BP 89, 33270 Floirac, France
Search for more papers by this authorM. P. Yasinskaya
Astronomical Observatory, Odessa National University, T. G. Shevchenko Park, 65014, Odessa, Ukraine
Isaac Newton Institute of Chile, Odessa Branch, Ukraine
Search for more papers by this authorS. I. Belik
Astronomical Observatory, Odessa National University, T. G. Shevchenko Park, 65014, Odessa, Ukraine
Isaac Newton Institute of Chile, Odessa Branch, Ukraine
Search for more papers by this authorABSTRACT
Luminous FG supergiants can be used as extragalactic distance indicators. In order to fully exploit the properties of these bright stars, we must first learn how to measure their luminosities. Based primarily on classical Cepheids and supergiants in clusters and OB associations, we have derived 80 empirical relations connecting the line depth ratios of Fe ii/Fe i lines with the absolute magnitudes Mv and the effective temperatures Teff. These relations have been applied to estimate the absolute magnitudes of 98 FG supergiants with an error of ±0.26 mag. The application range of our calibrations is spectral types F2–G8 and luminosity classes I and II (absolute magnitudes Mv, −0.5 to −8 mag). A comparison of our Mv determinations with values from the literature shows good agreement.
REFERENCES
- Andrievsky S. M., 1998a, AN, 319, 239
- Andrievsky S. M., 1998b, IBVS, 4572, 1
- Andrievsky S. M. et al., 2002a, A&A, 381, 32
- Andrievsky S. M., Bersier D., Kovtyukh V. V., Luck R. E., Maciel W. J., Lepine J. R. D., Beletsky Yu. V., 2002b, A&A, 384, 140
- Andrievsky S. M., Kovtyukh V. V., Luck R. E., Lepine J. R. D., Maciel W. J., Beletsky Yu. V., 2002c, A&A, 392, 491
-
Andrievsky S. M.,
Luck R. E.,
Kovtyukh V. V., 2005, AJ, 130, 1880
10.1086/444541 Google Scholar
- Arellano Ferro A., Parrao L., 1990, A&A, 239, 205
- Arellano Ferro A., Mendoza V., Eugenio E., 1993, AJ, 106, 2516
- Arellano Ferro A., Giridhar S., Rojo Arellano E., 2003, RevMexAA, 39, 3
- Auman J. R., Woodrow J. E. J., 1975, ApJ, 197, 163
- Bagnulo S. et al., 2003, ESO Messenger, 114, 10
- Baranne A. et al., 1996, A&AS, 119, 373
- Beaulieu J.-P. et al., 1995, A&A, 303, 137
- Burki G., Schmidt E. G., Arellano Ferro A., Fernie J. D., Sasselov D., Simon N. R., Percy J. R., Szabados L., 1986, A&A, 168, 139
- Feast M., 1999, PASP, 111, 775
- Fernie J. D., Khoshnevissan M. H., Seager S., 1995, AJ, 110, 1326
- Fouque P. et al., 2007, A&A, 476, 73
- Galazutdinov G. A., 1992, Prepr. SAO RAS, 92, 28
- Gieren W. P., Fouque P., Gomez M., 1998, ApJ, 496, 17
- Gray D. F., 1992, The Observation and Analysis of Stellar Photospheres. Cambridge Univ. Press, Cambridge
- Katz D., Soubiran C., Cayrel R., Adda M., Cautain R., 1998, A&A, 338, 151
- Kharchenko N. V., Piskunov A. E., Röser S., Schilbach E., Scholz R.-D., 2005, A&A, 438, 1163
- Kovtyukh V. V., 2007, MNRAS, 378, 617
- Kovtyukh V. V., Andrievsky S. M., Belik S. I., Luck R. E., 2005, AJ, 129, 433
- Kovtyukh V. V., Soubiran C., Luck R. E., Turner D. G., Belik S. I., Andrievsky S. M., Chekhonadskikh F. A., 2008, MNRAS, 389, 1336
- Luck R. E., Andrievsky S. M., 2004, AJ, 128, 343
- Luck R. E., Lambert D. L., 1985, ApJ, 298, 782
- Luck R. E., Gieren W., Andrievsky S. M., Kovtyukh V. V., Fouqué P., Pont F., Kienzle F., 2003, A&A, 401, 939
- Luck R. E., Kovtyukh V. V., Andrievsky S. M., 2006, AJ, 132, 902
- Luck R. E., Andrievsky S. M., Fokin A., Kovtyukh V. V., 2008, AJ, 136, 98
-
Lyubimkov L. S.,
Boyarchuk A. A., 1983, Ap, 19, 385
10.1007/BF01005687 Google Scholar
- McCarthy J. K., Sandiford B. A., Boyd D., Booth J. M., 1993, PASP, 105, 881
- Moffett T. J., Barnes T. G., 1984, ApJS, 55, 389
- Moultaka J., Ilovaisky S. A., Prugniel P., Soubiran C., 2004, PASP, 116, 693
- Rentzsch-Holm I., 1996, A&A, 312, 966
- Salasnich B., Girardi L., Weiss A., Chiosi C., 2000, A&A, 361, 1023
- Schaller G., Schaerer D., Meynet G., Maeder A., 1992, A&AS, 96, 269
- Slowik D. J., Peterson D. M., 1995, AJ, 109, 2193
- Thévenin F., Idiart T. P., 1999, ApJ, 521, 753
- Turner D. G., Kovtyukh V. V., Majaess D. J., Lane D. J., Moncrieff K. E., 2009, AN, 330, 807
- van Leeuwen F., 2007, A&A, 474, 653
- Wachmann A. A., 1939, Spektral-Durchm. Milchstr., Teil 1, 1, 0
