PHYSICAL PARAMETERS OF HII/PDR COMPLEX IN ORION BAR ESTIMATED BY OBSERVATIONS OF 8 MM RECOMBINATION LINES. EFFECTIVE TEMPERATURE OF 1 С Ori STAR

Автор(и)

  • A. P. Tsivilev P.N. Lebedev Physical Institute, Academy of Sciences of Russia, Російська Федерація
  • S. Yu. Parfenov Ural Federal University, Російська Федерація
  • A. M. Sobolev Ural Federal University,

DOI:

https://doi.org/10.18524/1810-4215.2014.27.81297

Ключові слова:

Stars, OB stars, parameters, Interstellar medium, HII regions, PDR, Spectroscopy, RRL

Анотація

Physical parameters of HII/PDR complex in Ori Bar were estimated using observations of recombination radio lines (RRL) of carbon (C), hydrogen (H) and helium (He) with RT-22 radio telescope in Pushchino. Possible structure of the complex is discussed. Effective temperature (Teff) of the star ionizing Orion nebula was estimated. Obtained estimate provides  additional constraint to existing “spectral class – Teff“ calibrations for O-stars indicating that the q1 С Ori star with ≈ O6.5 V spectral class has Teff  in the range 36 000–37 500 K 

Посилання

Copetti M. V. F. and Bica E. I. D.: 1983, ApSS, 91, 381.

Hua C. T. & Louise R.: 1982, A&A SS, 88, 477.

Mesa-Delgado A. et al.: 2008, ApJ., 675, 389.

Polyakov A.M., Tsivilev A.P.: 2007, Astron. Lett., 33, 34.

Poppi S. et al.: 2007, A&A, 464, 995.

Pottasch S.R. et al.: 1979, A&A, 77, 189.

Sorochenko R.L., Gordon M.A.: 2003, Radio Recombination Lines. Physics and Astronomy (Fizmatlit, Moscow, 2003) [in Russian].

Sorochenko R.L., Tsivilev A.P.: 2000, Astron. Rep., 44, 426.

Sorochenko R.L., Tsivilev A.P.: 2010, Kinem. Phys. Celest. Bodies, 26, 162.

Stahl O. et al.: 2008, arXiv:0805.0701v2.

Tsivilev A.P.: 2014, Astron. Lett., 40, 615.

Tsivilev A.P. et al : 1986, Sov. Astron. Lett., 12, 355.

Vacca W.D. et al.: 1996, ApJ, 460, 914.

Wilson T.L. &. Pauls T.: 1984, A&A, 138, 225.

##submission.downloads##

Опубліковано

2014-10-26

Номер

Розділ

Статті