Geodesic
Element abundance inhomogeneity in the interstellar medium based on the data of HDE 226868 (Cyg X-1) and $\alpha$ Cam
Učënye zapiski Kazanskogo universiteta. Seriâ Fiziko-matematičeskie nauki, Uchenye Zapiski Kazanskogo Universiteta. Seriya Fiziko-Matematicheskie Nauki, Tome 153 (2011) no. 2, pp. 102-107 Cet article a éte moissonné depuis la source Math-Net.Ru

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Synthetic spectrum modelling with allowance for non-LTE effects was used to determine element abundances in the atmospheres of two O-supergiants with similar physical characteristics: HDE 226868 (Cyg X-1 optical component) and $\alpha$ Cam localized at a distance of 2.5–2.7 kpc from each other. The average CNO, as well as Al, S, and Zn abundance differences are 0.15–0.30 dex. HDE 226868 has higher abundances compared to $\alpha$ Cam. The differences are in good qualitative agreement with heavy element distribution over the Galaxy disk derived by Luck et al. on the basis of 50 galactic Cepheids. This fact confirms the inhomogeneity of heavy element distribution on the scale of 2 kpc and is in agreement with the concept of preservation of the intrinsic particularities of interstellar medium “superclouds” on a time-scale of more than 1 Gyr.
Keywords: element abundances, interstellar matter inhomogeneity, superclouds, O-supergiant, spectrum modelling, non-LTE models, stellar atmospheres. 
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     author = {E. A. Karitskaya and N. G. Bochkarev and V. V. Shimansky and G. A. Galazutdinov},
     title = {Element abundance inhomogeneity in the interstellar medium based on the data of {HDE} 226868 {(Cyg~X-1)} and $\alpha${~Cam}},
     journal = {U\v{c}\"enye zapiski Kazanskogo universiteta. Seri\^a Fiziko-matemati\v{c}eskie nauki},
     pages = {102--107},
     year = {2011},
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     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZKU_2011_153_2_a10/}
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E. A. Karitskaya; N. G. Bochkarev; V. V. Shimansky; G. A. Galazutdinov. Element abundance inhomogeneity in the interstellar medium based on the data of HDE 226868 (Cyg X-1) and $\alpha$ Cam. Učënye zapiski Kazanskogo universiteta. Seriâ Fiziko-matematičeskie nauki, Uchenye Zapiski Kazanskogo Universiteta. Seriya Fiziko-Matematicheskie Nauki, Tome 153 (2011) no. 2, pp. 102-107. http://geodesic.mathdoc.fr/item/UZKU_2011_153_2_a10/

[1] Efremov Yu. N., Ochagi zvezdoobrazovaniya v galaktikakh, Nauka, M., 1989, 248 pp.

[2] Bochkarev N. G., Osnovy fiziki mezhzvezdnoi sredy, Izd-vo Mosk. un-ta, M., 1992, 352 pp.

[3] Luck R. E., Kovtyukh V. V., Andrievsky S. M., “The Distribution of the Elements in the Galactic Disk”, Astron. J., 132:2 (2006), 902–918 | DOI

[4] Shimanskii V. V., Borisov N. V., Shimanskaya N. N., “Effekty otrazheniya i parametry starykh predkataklizmicheskikh peremennykh MS Peg i LM Cam”, Astron. zhurn., 80:9 (2003), 712–844

[5] Karitskaya E. A., Bochkarev N. G., Bondar A. V., Galazutdinov G. A., Li B.-K., Musaev F. A., Sapar A. A., Shimanskii V. V., “Spektralnyi monitoring V1357 Cyg=Cyg X-1 v 2002–2004 gg.”, Astron. zhurn., 85:5 (2008), 409–426

[6] Artyukhina N. M., “Dvizheniya grupp zvezd rannikh spektralnykh klassov i orionovykh peremennykh po otnosheniyu k galakticheskoi ploskosti”, Astron. zhurn., 47:3 (1970), 667–668

[7] Acharova I. A., Lepine J. R. D., Mishurov Yu. N., Shustov B. M., Tutukov A. V., Wiebe D. S., “A mechanism for the formation of oxygen and iron bimodal radial distribution in the disc of our Galaxy”, Mon. Not. R. Astr. Soc., 402:2 (2010), 1149–1155 | DOI