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Maser emission towards the young planetary nebula IRAS 17347-3139

Published online by Cambridge University Press:  01 March 2007

D. Tafoya ,
Y. Gómez ,
J. F. Gómez ,
I. de Gregorio-Monsalvo ,
L. Uscanga ,
G. Anglada  and
J. M. Torelles
D. Tafoya
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA Centro de Radioastronomí a y Astrofí sica, UNAM Apartado Postal 3-72 (Xangari), 58089 Morelia, Michoacán, México
Y. Gómez
Affiliation:
Centro de Radioastronomí a y Astrofí sica, UNAM Apartado Postal 3-72 (Xangari), 58089 Morelia, Michoacán, México
J. F. Gómez
Affiliation:
Laboratorio de Astrofí sica Espacial y Fí sica Fundamental INTA, Spain
I. de Gregorio-Monsalvo
Affiliation:
Laboratorio de Astrofí sica Espacial y Fí sica Fundamental INTA, Spain
L. Uscanga
Affiliation:
Centro de Radioastronomí a y Astrofí sica, UNAM Apartado Postal 3-72 (Xangari), 58089 Morelia, Michoacán, México
G. Anglada
Affiliation:
Instituto de Astrofí sica de Andalucí a, CSIC Apartado 3004, E-18080, Granada, Spain
J. M. Torelles
Affiliation:
Instituto de Ciencias del Espacio, Consejo Superior de Investigaciones Cientí ficas-Instit D'Estudis Espacials de Catalunya, (CSIC-IEEC), Gran Capitá 2, E-08034 Barcelona, Spain
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Abstract

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We have re-analyzed observations of the water maser emission in IRAS 17347-3139 carried out previously and compared them with new higher angular resolution and more sensitive radio-continuum observations to explain the shift between the position of the peak of the radio-continuum with respect to the center of the ring-like distribution. From our analysis, we found that the water maser emission is not distributed in a closed ring-like structure, but in what appears to be a segment of an ellipse centered in the position of the peak of the radio-continuum. These results can explain the shift between the radio-continuum and the water maser emission. We also present interferometric observations of the OH maser emission towards IRAS 17347-3139 from which we have found that the OH maser emission detected previously is not associated with this source. Furthermore, since our observations are more sensitive, we have detected for the first time weak OH maser emission associated with IRAS 17347-3139.

Keywords

planetary nebula: individual (IRAS 17347-3139)masersradio continuum: stars
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S242: Astrophysical Masers and their Environments , March 2007 , pp. 334 - 335
Copyright
Copyright © International Astronomical Union 2008

References

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