Hostname: page-component-8448b6f56d-m8qmq Total loading time: 0 Render date: 2024-04-20T00:05:10.579Z Has data issue: false hasContentIssue false
  • English
  • Français

The interaction of the supermassive object R136a with the interstellar environment

Published online by Cambridge University Press:  04 August 2017

J.V. Feitzinger  and
Th. Schmidt-Kaler
J.V. Feitzinger
Affiliation:
Astronomisches Institut, Ruhr-Universität, 463o Bochum, FRG
Th. Schmidt-Kaler
Affiliation:
Astronomisches Institut, Ruhr-Universität, 463o Bochum, FRG

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.

R136a is the luminous object in the core of the 30 Dor nebula in the LMC, embedded in the extremely young star cluster NGC 2070 with the most recent star forming event less 106 yr ago. R136a-1 (V = 11.08) lies in the center of this cluster. The companion or foreground star R136a-2 (ca. 1.2m fainter than R 136a-1) 0′.5 apart does not impair the dominating role of R136a-1. The light distribution is strongly peaked to the center of R136a and disagrees completely with Moffat and Seggewiss's (1983) description and their interpretation as a dense core of a cluster (Chu and Wolfire, 1983). This is strenghtened by the UV observations (Cassinelli et al. 1981, Feitzinger et al. 1983, Savage et al. 1983): the spatial spread function of the IUE satellite is dominated by an object of extremely small ultraviolet extent, less than that of a gaussian with 1′.5. Speckle observations (Meaburn, 1982; Weigelt, 1981), are discordant in the interpretation of the faint background, but concordant in revealing the existence of a small bright component, with an upper limit of the diameter < 0.02 pc. This is also found, with somewhat lower resolution, by Chu (1934).

Type
II. EVOLUTION OF MASSIVE STARS EVOLUTION AND MODELS
Information
Symposium - International Astronomical Union , Volume 105: Observational Tests of the Stellar Evolution Theory , 1984 , pp. 321 - 324
Copyright
Copyright © Reidel 1984 

References

Abbott, D.C., 1978, Ap. J. 225, 893 Google Scholar
Abbott, D.C., 1982, Ap. J. 263, 723 CrossRefGoogle Scholar
Cassinelli, J.P., Mathis, J.S., Savage, B.D., 1981, Science 212, 1497 CrossRefGoogle Scholar
Chu, Y.H., Wolfire, M., 1983, BAAS 15, 644 Google Scholar
Chu, Y.H., 1984, IAU Sympos. 108, Magellanic Clouds, p. 239.Google Scholar
Feitzinger, J.V., Schmidt-Kaler, Th., 1980, in Two Dimensional Photometry, ed. Crane, P., Kjär, K., ESO, Munich, p. 249 Google Scholar
Feitzinger, J.V., Hanuschik, R., Schmidt-Kaler, Th., 1983, Astron. Astrophys. 120, 269 Google Scholar
Feitzinger, J.V., Hanuschik, R., Schmidt-Kaler, Th., 1984, Astron. Astrophys., in press Google Scholar
McCray, R., Snow, T.P., 1979, Ann. Rev. Astron. Astrophys. 17, 213 Google Scholar
McGregor, P.J., Hyland, A.R., 1981, Ap. J. 250, 116 CrossRefGoogle Scholar
Meaburn, J., 1981, MN 196, 19 P Google Scholar
Meaburn, J., Hebden, J.C., Morgan, B.L., Vine, H., 1982, MN 200, 1 P Google Scholar
Moffat, A.F.J., Seggewiss, W., 1983, Astron. Astrophys. 125, 83 Google Scholar
Panagia, N., Tanzi, E.G., Tarenghi, M., 1983, Ap. J. 272, 123, (Bologna) CrossRefGoogle Scholar
Savage, B.D., Fitzpatrick, E.L., Cassinelli, J.P., Ebbets, D.C., 1983, Wiscons in preprint No. 176 Google Scholar
Underhill, A., 1983, Ap. J. 266, 718 Google Scholar
Walborn, N.R., 1984, IAU Sympos. 108, Magellanic Clouds, p. 259.Google Scholar
Weigelt, G., 1981, in High Angular Resolution, ESO-Workshop, ed. Ulrich, M.H., Kjär, K., Munich, p. 95 Google Scholar