Advertisement

Interferometric observations of 95 GHz methanol masers

  • Preethi Pratap
  • Karl Menten
8. Methanol Masers in Star Forming Regions
Part of the Lecture Notes in Physics book series (LNP, volume 412)

Abstract

High resolution observations of the 95 GHz Class I methanol maser transition and the CS J = 2 → 1 line toward the W33 and W51 star-forming regions were made with the BIMA array. In both cases, the methanol maser positions are distinctly offset from continuum sources and water maser centers but agree with positions of known masers in other methanol lines. In W33 the 95 GHz masers arise from several spots that are close to a high density clump marked by CS emission. Strong thermal emission from methanol is seen toward the W51 e1/e2 ultracompact HII regions.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Batrla, W., Matthews, H. E, Menten, K. M., & Walmsley, C. M. 1988, Nature, 326, 49Google Scholar
  2. Batrla, W., & Menten, K. M. 1988, ApJ, 329, L117Google Scholar
  3. De Lucia, F. C., Herbst, E., Anderson, T., & Helminger, P. 1989, J. Molec. Spectrosc., 134, 395Google Scholar
  4. Gaume, R. A., & Mutel, R. L. 1987, ApJS, 65, 193Google Scholar
  5. Genzel, R. et al. 1981, ApJ, 247, 1039Google Scholar
  6. Haschick, A. D., & Ho, P. T. P. 1983, ApJ, 267, 638Google Scholar
  7. Haschick, A. D., Menten, K. M., & Baan, W. A. 1990, ApJ, 354, 556Google Scholar
  8. Johnston, K. J., Gaume, R. A., Stolovy, S., Wilson, T. L., Walmsley, C. M., & Menten, K. M. 1992, ApJ, 385, 232Google Scholar
  9. Menten, K. M. 1991, in Skylines (Proc. Third Haystack Observatory Meeting, ed. A. D. Haschick & P. T. P. Ho (San Francisco: ASP), 119Google Scholar
  10. Menten, K. M., Walmsley, C. M., Henkel, C., & Wilson, T. L. 1986, A&A, 157, 318Google Scholar
  11. Plambeck, R. L., & Menten, K. M. 1990, ApJ, 364, 555Google Scholar
  12. Plambeck, R. L., & Wright, M. C. H. 1988, ApJ, 330, L61Google Scholar
  13. Pratap, P., Menten, K. M., Reid, M. J., Moran, J. M., & Walmsley, C. M. 1991, ApJ, 373, L13Google Scholar
  14. Rudolph, A., Welch, W. J., Palmer, P., & Dubrulle, B. 1990, ApJ 363, 528Google Scholar

Copyright information

© Springer-Verlag 1993

Authors and Affiliations

  • Preethi Pratap
    • 1
  • Karl Menten
    • 1
  1. 1.Harvard-Smithsonian Center for AstrophysicsCambridge

Personalised recommendations