Investigation of the lines Hα and Hβ in the spectrum of star HD 206267
| 1Rustamov, JN, 2Abdulkerimova, AF 1Shemakha Astrophysical Observatory named after N.Tusi of the Azerbaijan National Academy of Sciences 2Nasir al-Din al-Tusi Shamakhi Astrophysical Observatory, Pirqulu, Azerbaijan |
| Kinemat. fiz. nebesnyh tel (Online) 2017, 33(5):49-58 |
| https://doi.org/10.15407/kfnt2017.05.049 |
| Start Page: Physics of Stars and Interstellar Medium |
| Language: Russian |
Abstract: The results of investigations of the Hαand Hβ; lines in the spectrum of the star HD 206267 are presented. Observations were carried out in 2011—2014 at the Cassegrain focus of the 2-m telescope of the N. Tusi Shamakhy Astrophysical Observatory of NAS of Azerbaijan by using an echelle spectrometer. The moving discrete absorption components in the core of line Hα from the red side to the violet, the stable emission in the violet wing of the line Hα, the antiphase variation of the radial velocities and equivalent widths of the line Hα, and the independence of the changes of the equivalent widths of the line Hβ; from the phase of the orbital period have been revealed for the first time. A spectral feature according to which this star can be considered as a source of X-ray radiation has not been found. |
| Keywords: discrete absorption components, emission, spectral lines, star HD 206267 |
References:
1.G. A. Galazutdinov, Preprint No. 92, SAO RAN (Special Astrophysics Observatory of the Russian Academy of Sciences, Nizhny Arkhyz, 1992).
2.T. S. Galkina, “Spectral Observations of HD 206267, identified with X-ray source Ser X-4,” Izv. Krym. Astrofiz. Obs. 63, 86–92 (1981).
3.A. G. Masevich and A. V. Tutukov, Stellar Evolution: Theory and Observations (Nauka, Moscow, 1988) [in Russian].
4.X. M. Mikhailov, V. M. Khalilov, and I. A. Alekberov, “Echelle-spectrophotometer of Cassegrain focus of the 2-meter telescope at Shamakhi Astrophysical Observatory,” Tsirk. Shemakhin. Astrofiz. Obs. Nats. Akad. Nauk Az. 109, 21–30 (2005).
5.D. K. Rustamov and A. F. Abdulkerimova, “Asymmetry of the interstellar lines Na I λ 589.0 and 589.6 nm in the spectrum of the Wolf–Rayet type star HD 192163,” Kinematics Phys. Celestial Bodies 31, 100–104 (2015).
https://doi.org/10.3103/S0884591315020063
6.D. N. Rustamov and A. M. Cherepashchuk, “The Wolf–Rayet star HD 192163 as a possible evolutionary progenitor of a low-mass X-ray binary,” Astron. Rep. 55, 347–358 (2011).
https://doi.org/10.1134/S1063772911010069
7.D. N. Rustamov and A. M. Cherepashchuk, “Spectral and photometric studies of the Wolf–Rayet star WR 134 = HD 191765,” Astron. Rep. 56, 761–774 (2012).
https://doi.org/10.1134/S1063772912100058
8.H. A. Abt, “The ages and dimensions of Trapezium systems,” Astrophys. J. 304, 688–694 (1986).
https://doi.org/10.1086/164207
9.D. Crampton and R. O. D. Redman, “Binary O star HR 8281,” Astron. J. 80, 454–457 (1975).
https://doi.org/10.1086/111764
10.J. A. Harvin, “Doppler tomography of massive compact binary stars in multiple star systems,” Bull. Am. Astron. Soc. 33, 1532 (2001).
11.J. A. Harvin, “Doppler tomography of the massive compact binary stars in the multiple star systems d Orionis and HD 206267,” Publ. Astron. Soc. Pac. 116, 186–186 (2004).
https://doi.org/10.1086/381874
12.J. A. Harvin, D. R. Gies, and L. R. Penny, “The components of the HD 206267 A triple star system,” Bull. Am. Astron. Soc. 35, 1223 (2003).
13.G. Hensberge and R. H. Hammerschlag, “HD 206267, a candidate star for the transient X-ray source Cepheus X-4?,” Astron. Astrophys. 39, 157–158 (1975).
14.L. Kaper, H. F. Henrichs, J. S. Nichols, and J. H. Telting, “Long-and short-term variability in O-star winds. II. Quantitative analysis of DAC behaviour,” Astron. Astrophys. 344, 231–262 (1999).
15.A. Kaufer, O. Stahl, V. Wolf, Th. Gang, A. Gummersbach S, J. Kovacs, H. Mandel, and Th. Szeifert, “Longterm spectroscopic monitoring of BA-type supergiants. I. Ha line-profile variability,” Astron. Astrophys. 305, 887–901 (1996).
16.A. Lobel and R. Blomme, “Modeling ultraviolet wind line variability in massive hot stars,” Astrophys. J. 678, 408–430 (2008).
https://doi.org/10.1086/529129
17.N. Markova, “New aspects of line-profile variability in P Cygni’s optical spectrum,” Astron. Astrophys. Suppl. Ser. 144, 391–404 (2000).
https://doi.org/10.1051/aas:2000217
18.R. K. Prinja, M. J. Barlow, and I. D. Howarth, “Terminal velocities for a large sample of O stars. V supergiants, and Wolf–Rayet stars,” Astrophys. J. 361, 607–620 (1990).
https://doi.org/10.1086/169224
19.J. T. Puis, J. S. Vink, and F. Najarro, “Mass loss from hot massive stars,” Astron. Astrophys. Rev. 16, 209–325 (2008).
https://doi.org/10.1007/s00159-008-0015-8
20.W. C. Rufus, “The variable radial velocity of the star, BD+56[degrees]2617(A),” Publ. Obs. Univ. Mich. 6, 45–47 (1937).
21.D. J. Stickland, “Spectroscopic binary orbits from ultraviolet radial velocities. Paper 17: HD 206267,” Observatory 115, 180–185 (1995).
22.M. P. Ulmer, W. A. Baity, W. A. Wheaton, and L. E. Peterson, “New transient source, Cepheus X-4, observed by OSO-7,” Astrophys. J. Lett. 184, L117–L120 (1973).
https://doi.org/10.1086/181302
23.W. L. Waldron and J. P. Cassinelli, “An extensive collection of stellar wind X-Ray source region emission line parameters, temperatures, velocities, and their radial distributions as obtained from Chandra observations of 17 OB stars,” Astrophys. J. 668, 456–480 (2007).
https://doi.org/10.1086/520919
24.P. S. Wojdowski, N. S. Schulz, K. Ishibashi, and D. P. Huenemoerder, “The hot star triplet HD 206267A,” in High Resolution X-ray Spectroscopy with XMM-Newton and Chandra: Proc. Int. Workshop, Holmbury St Mary, UK, Oct. 24–25, 2002, Ed. by G. Branduardi-Raymont, pp. 1–4.