Statistical Indicators of Astrophysical Parameters

• Autorzy: Wąż P. , Bielińska-Wąż D. , Strobel A. , Pleskacz A.
• Języki publikacji: EN

Abstrakty

EN

The aim of this paper is to introduce a new tool for a simple identification of spectral types. We use methods of statistical spectroscopy, in particular the method of intensity-distribution moments. The statistical approach revealed a characteristic behavior of moments of the stellar spectra for different spectral types. The transition from one spectral type to another may be expressed as a regular function of appropriate moments of the intensity distribution of the spectra. Moment-based diagrams localize particular spectral types in different areas of the plots. Since the intensity-distribution moments may be easily derived from the observed spectra, the presented method facilitates a simple auxiliary tool for the classification of stars to specific spectral types. It is also helpful in checking the correctness of the existing classifications. The intensity-distribution moments depend on all kinds of stellar characteristics, including the metallicity and the age. Therefore, using an inverse approach, from the knowledge of moments one may predict these properties.

Słowa kluczowe

EN

techniques: spectroscopic; Hertzsprung-Russell diagrams; C-M diagrams; Stars: fundamental parameters

• Wydawca: Copernicus Foundation for Polish Astronomy
• Czasopismo: Acta Astronomica
• Rocznik: 2010
• Tom: Vol. 60, No. 3
• Strony: 283--293
• Opis fizyczny: Bibliogr. 26 poz., tab., wykr.

Twórcy

autor

Wąż P.

• Toruń Centre for Astronomy, N. Copernicus University, ul. Gagarina 11, 87-100 Toruń, Poland

autor

Bielińska-Wąż D.

• Department of Bioengineering, University of California San Diego, La Jolla, CA 92093, USA
• Institute of Physics, N. Copernicus University, ul. Grudziądzka 5-7, 87-100 Toruń, Poland

autor

Strobel A.

• Toruń Centre for Astronomy, N. Copernicus University, ul. Gagarina 11, 87-100 Toruń, Poland

autor

Pleskacz A.

• Toruń Centre for Astronomy, N. Copernicus University, ul. Gagarina 11, 87-100 Toruń, Poland

Bibliografia

• Bailer-Jones, C.A.L. 2010, MNRAS, 403, 96.
• Basak, S.C., Gute, B.D., Mills, D., and Hawkins, D.M. 2003, J. Mol. Structure (Theochem), 622, 127.
• Bauche-Arnoult, C., Bauche, J., and Klapisch, M. 1985, Phys. Rev. A, 31, 2248.
• Bauche, J., and Bauche-Arnoult, C. 1990, Comp. Phys. Rep., 12, 1.
• Bielińska-Wąż, D. 1999, in: „Symmetry and Structural Properties of Condensed Matter”, Eds. Lulek, T. et al., World Scientific, Singapore, p. 212.
• Bielińska-Wąż, D. 2010, J. Math. Chem., 47, 41.
• Bielińska-Wąż, D., Wąż, P., and Basak, S.C. 2006, Eur. Phys. J. B, 50, 333.
• Bielińska-Wąż, D., Wąż, P., and Basak, S.C. 2007, J. Math. Chem., 42, 1003.
• Bielińska-Wąż, D., Wąż, P., Nandy, A., and Clark, T. 2007a, Chem. Phys. Lett., 443, 408.
• Bielińska-Wąż, D., and Wąż, P. 2008a, J. Math. Chem., 43, 1287.
• Bielińska-Wąż, D., Nowak, W., Pepłowski, Ł., Wąż, P., Basak, S.C., and Natarajan, R. 2008b, J.Math. Chem., 43, 1560.
• Bielińska-Wąż, D., and Subramaniam, C. 2010, J. Theor Biol., 266, 667.
• Brody, T.A., Flores, J., French, J.B., Mello, P.A., Pandey, A., and Wong, S.S.M. 1981, Rev. Mod. Phys., 53, 385.
• Campbell, S.W., and Lattanzio, J.C. 2008, A&A, 490, 769.
• Carbo, R., Leyda, L., and Arnau, M. 1980, Int. J. Quantum Chem., 17, 1185.
• Cowan, R.D. 1981, “The Theory of Atomic Structure”, Univ. California Press, Berkeley.
• Devillers, J., and Balaban, A.T. 1999, “Topological Indices and Related Descriptors in QSAR and QSPR”, Gordon and Breach Science Publishers, The Netherlands.
• Haller, E., Koeppel, H., and Cederbaum, L.S. 1983, Chem. Phys. Lett., 101, 215.
• Kennedy, P.M., and Buscombe, W. 1974, “MK Spectral Classifications Published since Jascheks La Plata Catalogue”, Northwestern University, Evanston.
• Lebouteiller, V., Kunth, D., Thuan, T.X., and Désert, J.M. 2009, A&A, 494, 915.
• Mihalas, D., and Binney, J. 1981, Science, 214, 829.
• Pickles, A.J. 1985, ApJSS, 59, 33.
• Porter, C.E. 1965, „Statistical Theory of Spectra: Fluctuations”, Academic, New York.
• Re Fiorentin, P., Bailer-Jones, C.A.L., Lee, Y.S., Beers, T.C., Sivarani, T., Wilhelm, R., Allende Prieto, C., and Norris, J.E. 2007, A&A, 467, 1373.
• Wąż, P., Bielińska-Wąż, D., Pleskacz, A., and Strobel, A. 2008, Acta Phys. Pol. B, 39, 1993.
• Wąż, P., and Bielińska-Wąż, D. 2009, Acta Phys. Pol. A, 116, 987.