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The Galactic Distribution of Wolf-Rayet Stars∗

Published online by Cambridge University Press:  14 August 2015

B. Hidayat ,
K. Supelli  and
K.A. van der Hucht
B. Hidayat
Affiliation:
1Observatorium Bosscha, Institut Teknology Bandung Indonesia
K. Supelli
Affiliation:
1Observatorium Bosscha, Institut Teknology Bandung Indonesia
K.A. van der Hucht
Affiliation:
2Laboratorium voor Ruimte-onderzoek, Rijksuniversiteit Utrecht, Nederland

Abstract

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On the basis of the most recent compilation of narrow-band photometry and absolute visual magnitudes of Wolf-Rayet stars, and adopting a normal interstellar extinction law in all directions, the galactic distribution of 132 of the 159 known galactic WR stars is presented and discussed.

The spiral structure is found to be more clearly pronounced than in earlier studies. Furthermore we find an indication of two spiral arms at r=4 and 6 kpc. There appears to be an asymmetry of the z-distribution of single stars with respect to galactic longitude.

The location of the WC8.5 and WC9 stars between 4.5 and 9 kpc from the galactic center is discussed in the context of Maeder's red supergiant to WR star scenario.

Type
SESSION 1 — THE WOLF-RAYET PHENOMENON
Information
Symposium - International Astronomical Union , Volume 99: Wolf-Rayet Stars: Observations, Physics, Evolution , 1982 , pp. 27 - 40
Copyright
Copyright © Reidel 1982 

References

Allen, D.A., Hyland, A.R., Longmore, A.J., Caswell, J.L., Goss, W.M., and Haynes, R.F.: 1977, Astrophys. J. 217, 108.Google Scholar
Allen, D.A., Barton, J.R., and Wallace, P.T.: 1981, Monthly Notices Roy. Astron. Soc. 196, 797.Google Scholar
Chu, Y.-H.: 1981, Astrophys. J., 249, 195.Google Scholar
Cohen, M.: 1975, Monthly Notices Roy. Astron. Soc. 173, 489.CrossRefGoogle Scholar
Cohen, M., Barlow, M.J., and Kuhi, L.V.: 1975, Astron. Astrophys. 40, 291.Google Scholar
Efremov, Yu.N., Ivanov, G.R., and Nikolov, N.S.: 1981, Astrophys. Space Sci. 75, 407.Google Scholar
Fujimoto, M., and Sofue, Y.: 1977, Astron. Astrophys. 61, 199.Google Scholar
Georgelin, Y.M., Georgelin, Y.P., and Sivan, J.-P.: 1979, in: Burton, W. B. (ed.), The Large-Scale Characteristics of the Galaxy , Proc. IAU Symp. No. 84 (Dordrecht: Reidel), p. 65.Google Scholar
Gomez, A., Lortet, M.-C., and Pitault, A.: 1981, in Chiosi, C. and Stalio, R. (eds.), Effects of Mass Loss on Stellar Evolution , Proc. IAU Coll. No. 59 (Dordrecht: Reidel), p. 291.Google Scholar
Heckathorn, J.N., Bruhweiler, F.C., and Gull, T.R.: 1981, in press. van den Heuvel, E.P.J.: 1976, in Eggleton, P., Mitton, S., and Whelan, J. (eds.), Structure and Evolution of Close Binary Systems , Proc. IAU Symp. No. 73 (Dordrecht: Reidel), p. 35.Google Scholar
van der Hucht, K.A., Conti, P.S., Lundström, I., and Stenholm, B.: 1981, Space Science Reviews, 28, 227 (HCLS).Google Scholar
Lucke, P.B.: 1978, Astron. Astrophys. 64, 367.Google Scholar
Maeder, A.: 1981a, Astron. Astrophys. 99, 97.Google Scholar
Maeder, A.: 1981b, Astron. Astrophys., in press.Google Scholar
Maeder, A.: 1981c, Astron. Astrophys., in press.Google Scholar
Maeder, A., Lequeux, J., and Azzopardi, M.: 1980, Astron. Astrophys. 90, L17.Google Scholar
Massey, P.: 1981, Astrophys. J. 246, 153.Google Scholar
Mikulaśek, Z.: 1969, Bull. Astron. Inst. Czech. 20, 215.Google Scholar
Moffat, A.F.J. and Isserstedt, J.: 1980, Astron. Astrophys. 85, 201.Google Scholar
Neckel, Th., and Klare, G.: 1980, Astron. Astrophys. Suppl. 42, 251.Google Scholar
Roberts, M.S.: 1962, Astron. J. 67, 79.Google Scholar
Sim, M.E.: 1968, Observatory 88, 62.Google Scholar
Smith, L.F.: 1968a, Monthly Notices Roy. Astron. Soc. 138, 109.Google Scholar
Smith, L.F.: 1968b, Monthly Notices Roy. Astron. Soc. 140, 409.Google Scholar
Smith, L.F.: 1968c, Monthly Notices Roy. Astron. Soc. 141, 317.Google Scholar
Sparke, L.S., and Dodd, R.J.: 1978, Monthly Notices Roy. Astron. Soc. 182, 1.Google Scholar
Stenholm, B.: 1975, Astron. Astrophys. 39, 307.Google Scholar
Sutantyo, W.: 1982, in Sanford, P. (ed.), Proc. NATO Advanced Study Institute on Galactic X-Ray Sources, forthcoming.Google Scholar
Sutantyo, W., and Dermawan, L.: 1981, in: Feast, M. W. and Hidayat, B. (eds.), Proc. Second Asian-Pacific Regional IAU Meeting, Bandung, 24–29 August 1981, p.Google Scholar
Thé, P.S., Bakker, R., and Antalova, A.: 1980, Astron. Astrophys. Suppl. 41, 390.Google Scholar
Turner, D.G. and Smith, L.F.: 1981, in preparation.Google Scholar