Hostname: page-component-cd9895bd7-dk4vv Total loading time: 0 Render date: 2024-12-25T17:23:42.817Z Has data issue: false hasContentIssue false
  • English
  • Français

Near-Infrared Photometry of Southern Galactic Wolf-Rayet Stars

Published online by Cambridge University Press:  14 August 2015

C. Sterken  and
C. de Loore
C. Sterken
Affiliation:
Astrophysical Institute, Vrije Universiteit Brussel, Belgium
C. de Loore
Affiliation:
Astrophysical Institute, Vrije Universiteit Brussel, Belgium

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Allen et al. (1972) observed 40 WR stars in the |1.6µ| and |2.2µ| bands, and found evidence of interstellar dust emission in the WC9 stars Ve 2–45, AS320 and HD 313643. Hackwell et al. (1974) reported 2.3 to 23 µ photometry of 19 WR stars and concluded that the excess infrared radiation from the Wolf-Rayet stars (except for the WC9 stars) could be explained by free-free emission from a hot circumstellar shell. Gehrz and Hackwell (1974) found from 2.3 to 23 µ photometry that three out of four WC stars appear to be embedded in thick circumstellar dust (graphite) shells, and concluded that WC9 stars may form a distinct Wolf-Rayet class. Cohen et al. (1975) derived energy distributions of 23 Wolf-Rayet stars from 3µ-11µ scanner spectrophotometry and infrared photometry, and concluded that WN stars show only free-free emission whereas only WC stars show dust. The excesses in WC9 stars are interpreted as thermal emission by graphite grains.

Type
SESSION 1 — THE WOLF-RAYET PHENOMENON
Information
Symposium - International Astronomical Union , Volume 99: Wolf-Rayet Stars: Observations, Physics, Evolution , 1982 , pp. 67 - 72
Copyright
Copyright © Reidel 1982 

References

Allen, D.A., Swings, J.P., and Harvey, P.M. 1972, Astron. Astrophys. 20, 333.Google Scholar
Barnes, T.G., Lambert, D.L., Potter, A.E. 1974, Ap. J. 187, 73.CrossRefGoogle Scholar
Bernat, A.P., Barnes, T.G., Schupler, B.R., Potter, A.E. 1977, Publ. Astron. Soc. Pac. 89, 541.CrossRefGoogle Scholar
Cohen, M., Barlow, M.J., Kuhi, L.V. 1975, Astron. Astrophys. 4.Google Scholar
Cohen, M., Vogel, S.M. 1978, Mon. Not. R. astr. Soc. 185, 47.CrossRefGoogle Scholar
Engels, D., Sherwood, W.A., Wamsteker, W., Schultz, G.V. 1981, Infrared observations of southern bright stars, preprint.CrossRefGoogle Scholar
ESO 1979, ESO Users Manual, Ed. Danks, A. C. Google Scholar
Gehrz, R.D. and Hackwell, J.A. 1974, Ap. J. 194, 619.CrossRefGoogle Scholar
Hackwell, J.A., Gehrz, R.D., Smith, J.R. 1974, Ap. J. 192, 383.Google Scholar
Hackwell, J.A. and Gehrz, R.D. 1974, Ap. J. 194, 49.CrossRefGoogle Scholar
Hackwell, J.A., Gehrz, R.D., Smith, R.J. 1976, Ap. J. 210, 137.CrossRefGoogle Scholar
Johnson, H.L. 1968, in “Stars and Stellar Systems”, vol 7, Ed. Middlehurst, B. M., Aller, L. H., p. 193.Google Scholar
Kuhi, L.V. 1968, in “Wolf Rayet Stars”, Ed. Gebbie, K. B. and Thomas, R. N. (NBS Spec. Publ. 307), p. 101.Google Scholar
Persi, P., Ferrari-Toniolo, M., Spada, G., Conti, G., Di Benedetto, P., Tanzi, E.G., Tarenghi, M. 1979, Mon. Not. R. astr. Soc. 187, 293.Google Scholar
Schultz, G.V., Wiemer, W. 1975, Astron. Astrophys. 43, 133.Google Scholar
Smith, L.F. 1968a, Mon. Not. R. astr. Soc. 138, 109.Google Scholar
Smith, L.F. 1968b, Mon. Not. R. astr. Soc. 140, 409.CrossRefGoogle Scholar
Sneden, C., Gehrz, R.D., Hackwell, J.A. 1978, Ap. J. 223, 168.CrossRefGoogle Scholar
van der Hucht, K.A., Conti, P.S., Lundström, I., Stenholm, B. 1981, Space Sci. Rev. 28, 227.Google Scholar
Wamsteker, W. 1980a, private communication.Google Scholar
Wamsteker, W. 1980b, Standard stars and calibration for a southern JHKLM-photometric system, preprint.Google Scholar
Westerlund, B.E. 1966, Ap. J. 145, 724.CrossRefGoogle Scholar
Whitford, A.E. 1958, Ap. J. 63, 201.Google Scholar
Williams, P.M., Beattie, D.H., Lee, T.J., Stewart, J.M., Antonopoulou, E. 1978, Mon. Not. R. astr. Soc. 185, 467.CrossRefGoogle Scholar
Williams, P.M., Antonopoulou, E. 1979, Mon. Not. R. astr. Soc. 187, 183.Google Scholar
Williams, P.M., Adams, D.J., Arakiki, S., Beattie, D.H., Born, J., Lee, T.J., Robertson, D.J., Stewart, J.M. 1980, Mon. Not. R. astr. Soc. 192, 25P.CrossRefGoogle Scholar