The relative spatial distribution of SiO masers in AGB stars at 43 and 86 GHz

Jean François Desmurs; R Soria-Ruiz; F Colomer; K.B. Marvel; V. Bujarrabal; J Alcolea; P. J. Diamond; D. A. Boboltz; Athol J Kemball

The relative spatial distribution of SiO masers in AGB stars at 43 and 86 GHz

Jean François Desmurs
, R Soria-Ruiz
, F Colomer
, K.B. Marvel
, V. Bujarrabal
, J Alcolea
, P. J. Diamond
, D. A. Boboltz
, Athol J Kemball

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

We present the first VLBI images of SiO masers in the circumstellar envelope of an S-type star obtained with the newly developed capabilities of the Very Long Baseline Array (VLBA) at 86 GHz. We combine these data with those obtained quasi simultaneously at 43 GHz. These observations provide information on the structure and dynamics of the innermost circumstellar shells, where the return of large quantities of stellar material to the interstellar medium starts. Despite of the fact that these are preliminary results, we report that the maser emission of the v =1 J=1-0 and J=2-1 present a very different emission distribution, being not coincident in most cases.

Original language	English (US)
Title of host publication	Proceedings of the 6th European VLBI Network Symposium
Editors	E Ros, R.W. Porcas, A.P. Lobanov, J.A. Zensus
Place of Publication	Bonn, Germany
Pages	221-222
State	Published - 2002

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Desmurs, J. F., Soria-Ruiz, R., Colomer, F., Marvel, K. B., Bujarrabal, V., Alcolea, J., Diamond, P. J., Boboltz, D. A., & Kemball, A. J. (2002). The relative spatial distribution of SiO masers in AGB stars at 43 and 86 GHz. In E. Ros, R. W. Porcas, A. P. Lobanov, & J. A. Zensus (Eds.), Proceedings of the 6th European VLBI Network Symposium (pp. 221-222). http://www3.mpifr-bonn.mpg.de/div/vlbi/evn2002/book/JDesmurs.pdf

Desmurs, JF, Soria-Ruiz, R, Colomer, F, Marvel, KB, Bujarrabal, V, Alcolea, J, Diamond, PJ, Boboltz, DA & Kemball, AJ 2002, The relative spatial distribution of SiO masers in AGB stars at 43 and 86 GHz. in E Ros, RW Porcas, AP Lobanov & JA Zensus (eds), Proceedings of the 6th European VLBI Network Symposium. Bonn, Germany, pp. 221-222. <http://www3.mpifr-bonn.mpg.de/div/vlbi/evn2002/book/JDesmurs.pdf>

@inproceedings{0c948d351dbc4c249279d7d4ef04b510,

title = "The relative spatial distribution of SiO masers in AGB stars at 43 and 86 GHz",

abstract = "We present the first VLBI images of SiO masers in the circumstellar envelope of an S-type star obtained with the newly developed capabilities of the Very Long Baseline Array (VLBA) at 86 GHz. We combine these data with those obtained quasi simultaneously at 43 GHz. These observations provide information on the structure and dynamics of the innermost circumstellar shells, where the return of large quantities of stellar material to the interstellar medium starts. Despite of the fact that these are preliminary results, we report that the maser emission of the v =1 J=1-0 and J=2-1 present a very different emission distribution, being not coincident in most cases. ",

author = "Desmurs, \{Jean Fran{\c c}ois\} and R Soria-Ruiz and F Colomer and K.B. Marvel and V. Bujarrabal and J Alcolea and Diamond, \{P. J.\} and Boboltz, \{D. A.\} and Kemball, \{Athol J\}",

year = "2002",

language = "English (US)",

pages = "221--222",

editor = "E Ros and R.W. Porcas and A.P. Lobanov and J.A. Zensus",

booktitle = "Proceedings of the 6th European VLBI Network Symposium",

}

TY - GEN

T1 - The relative spatial distribution of SiO masers in AGB stars at 43 and 86 GHz

AU - Desmurs, Jean François

AU - Soria-Ruiz, R

AU - Colomer, F

AU - Marvel, K.B.

AU - Bujarrabal, V.

AU - Alcolea, J

AU - Diamond, P. J.

AU - Boboltz, D. A.

AU - Kemball, Athol J

PY - 2002

Y1 - 2002

N2 - We present the first VLBI images of SiO masers in the circumstellar envelope of an S-type star obtained with the newly developed capabilities of the Very Long Baseline Array (VLBA) at 86 GHz. We combine these data with those obtained quasi simultaneously at 43 GHz. These observations provide information on the structure and dynamics of the innermost circumstellar shells, where the return of large quantities of stellar material to the interstellar medium starts. Despite of the fact that these are preliminary results, we report that the maser emission of the v =1 J=1-0 and J=2-1 present a very different emission distribution, being not coincident in most cases.

AB - We present the first VLBI images of SiO masers in the circumstellar envelope of an S-type star obtained with the newly developed capabilities of the Very Long Baseline Array (VLBA) at 86 GHz. We combine these data with those obtained quasi simultaneously at 43 GHz. These observations provide information on the structure and dynamics of the innermost circumstellar shells, where the return of large quantities of stellar material to the interstellar medium starts. Despite of the fact that these are preliminary results, we report that the maser emission of the v =1 J=1-0 and J=2-1 present a very different emission distribution, being not coincident in most cases.

M3 - Conference contribution

SP - 221

EP - 222

BT - Proceedings of the 6th European VLBI Network Symposium

A2 - Ros, E

A2 - Porcas, R.W.

A2 - Lobanov, A.P.

A2 - Zensus, J.A.

CY - Bonn, Germany

ER -

The relative spatial distribution of SiO masers in AGB stars at 43 and 86 GHz

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