Abstract
We have used the IRAM Plateau de Bure Interferometer to observe the ground state and vibrationally excited lines of methyl cyanide towards the UC HIi region G31.41+0.31. We also obtained a map of the continuum emission at a frequency of 110 GHz. We detect a hot molecular core in the emission both of methyl cyanide and of the 110 GHz continuum. We estimate a temperature of 200 K and a mass of 1000 M⊙ for this compact massive region. We also detect a velocity gradient or shift across the methyl cyanide core whose origin could be due to rotation.
This is a preview of subscription content, log in via an institution to check access.
Preview
Unable to display preview. Download preview PDF.
References
Cesaroni R., Churchwell E., Hofner P., Walmsley C.M., Kurtz S. (1994a): A&A 288, 903
Cesaroni R., Olmi L., Walmsley C.M., Churchwell E., Hofner P. (1994b): with the UC HIi region G31.41+0.31. ApJL 435, L137
Churchwell E., Walmsley C.M., Cesaroni R. (1990): A&AS 83, 119
Churchwell E. (1991): NATO ASI Series, C.J. Lada & N. Kylafis edts., Kluwer
Churchwell E., Walmsley C.M., Wood D.O.S. (1992): A&A 253, 541
Gaume R.A., Mutel R.L. (1987): ApJS 65, 193
Olmi L., Cesaroni R., Walmsley C.M. (1993): A&A 276, 489
Author information
Authors and Affiliations
Editor information
Rights and permissions
Copyright information
© 1996 Springer-Verlag
About this paper
Cite this paper
Cesaroni, R., Olmi, L., Walmsley, C.M., Churchwell, E., Hofner, P. (1996). A massive “core” associated with the UC HIi region G31.41+0.31. In: Beckwith, S., Staude, J., Quetz, A., Natta, A. (eds) Disks and Outflows Around Young Stars. Lecture Notes in Physics, vol 465. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0102636
Download citation
DOI: https://doi.org/10.1007/BFb0102636
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-61389-3
Online ISBN: 978-3-540-68511-1
eBook Packages: Springer Book Archive