Skip to main content Accessibility help
×
Home
Hostname: page-component-564cf476b6-z65vl Total loading time: 0.182 Render date: 2021-06-21T11:47:42.788Z Has data issue: true Feature Flags: { "shouldUseShareProductTool": true, "shouldUseHypothesis": true, "isUnsiloEnabled": true, "metricsAbstractViews": false, "figures": true, "newCiteModal": false, "newCitedByModal": true, "newEcommerce": true }

The Maser-emitting Structure and Time Variability of the SiS Lines J=14−13 and 15-14 in IRC+10216

Published online by Cambridge University Press:  30 December 2019

J. P. Fonfría
Affiliation:
Molecular Astrophysics Group, Instituto de Física Fundamental, CSIC, C/ Serrano, 123, 28006, Madrid (Spain) email: jpablo.fonfria@csic.es
M. Fernández-López
Affiliation:
Instituto Argentino de Radioastronomía, CCT-La Plata (CONICET), C.C.5, 1894, Villa Elisa (Argentina)
J. R. Pardo
Affiliation:
Molecular Astrophysics Group, Instituto de Física Fundamental, CSIC, C/ Serrano, 123, 28006, Madrid (Spain) email: jpablo.fonfria@csic.es
M. Agúndez
Affiliation:
Molecular Astrophysics Group, Instituto de Física Fundamental, CSIC, C/ Serrano, 123, 28006, Madrid (Spain) email: jpablo.fonfria@csic.es
C. Sánchez Contreras
Affiliation:
Department of Astrophysics, Astrobiology Center (CSIC-INTA), Postal address: ESAC campus, P.O. Box 78, E-28691, Villanueva de la Cañada, Madrid (Spain)
L. Velilla-Prieto
Affiliation:
Molecular Astrophysics Group, Instituto de Física Fundamental, CSIC, C/ Serrano, 123, 28006, Madrid (Spain) email: jpablo.fonfria@csic.es
J. Cernicharo
Affiliation:
Molecular Astrophysics Group, Instituto de Física Fundamental, CSIC, C/ Serrano, 123, 28006, Madrid (Spain) email: jpablo.fonfria@csic.es
M. Santander-García
Affiliation:
Observatorio Astronómico Nacional, OAN-IGN, Alfonso XII, 3, E-28014, Madrid (Spain)
G. Quintana-Lacaci
Affiliation:
Molecular Astrophysics Group, Instituto de Física Fundamental, CSIC, C/ Serrano, 123, 28006, Madrid (Spain) email: jpablo.fonfria@csic.es
A. Castro-Carrizo
Affiliation:
Institut de Radioastronomie Millimétrique, 300 Rue de la Piscine, 38406 Saint-Martin d’Hères (France)
S. Curiel
Affiliation:
Departamento de Astrofísica Teórica, Instituto de Astronomía, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510, Mexico City (Mexico)
Corresponding
E-mail address:

Abstract

AGB stars are important contributors of processed matter to the ISM. However, the physical and chemical mechanisms involved in its ejection are still poorly known. This process is expected to have remarkable effects in the innermost envelope, where the dust grains are formed, the gas is accelerated, the chemistry is active, and the radiative excitation becomes important. A good tracer of this region in C-rich stars is SiS, an abundant refractory molecule that can display maser lines, very sensitive to changes in the physical conditions. We present high angular resolution interferometer observations (HPBW ≳0.″.25) of the v = 0 J = 14 – 13 and 15 – 14 SiS maser lines towards the archetypal AGB star IRC+10216, carried out with CARMA and ALMA to explore the inner 1” region around the central star. We also present an ambitious monitoring of these lines along one single pulsation period carried out with the IRAM 30 m telescope.

Type
Contributed Papers
Copyright
© International Astronomical Union 2019 

Access options

Get access to the full version of this content by using one of the access options below.

References

Cernicharo, J., Daniel, F., Castro-Carrizo, A., Agúndez, M., Marcelino, N., Joblin, C., Goicoechea, J. R., Guélin, M. 2013, 778, L25 CrossRefGoogle Scholar
Fonfría, J. P., Fernández-López, M., Agúndez, M., Sánchez-Contreras, C., Curiel, S., Cernicharo, J. 2014, MNRAS, 445, 3289 CrossRefGoogle Scholar
Fonfría, J. P., Cernicharo, J., Richter, M. J., Fernández-López, M., Velilla-Prieto, L., Lacy, J. H. 2015, MNRAS, 453, 439 Google Scholar
Fonfría, J. P., Fernández-López, M., Pardo, J. R., Agúndez, M., Sánchez Contreras, C., Velilla Prieto, L., Cernicharo, J., Santander-García, M., Quintana-Lacaci, G., Castro-Carrizo, A., Curiel, S. 2018, ApJ, 860, 162 CrossRefGoogle Scholar
Pardo, J. R., Cernicharo, J., Velilla Prieto, L., Fonfría, J. P., Agúndez, M., Quintana-Lacaci, G., Massalkhi, S., Tercero, B., Gómez-Garrido, M., de Vicente, P., Guélin, M., Kramer, C., Marka, C., Teyssier, D., Neufeld, D. 2018, A&A, 615, L4 CrossRefGoogle Scholar

Send article to Kindle

To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

The Maser-emitting Structure and Time Variability of the SiS Lines J=14−13 and 15-14 in IRC+10216
Available formats
×

Send article to Dropbox

To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

The Maser-emitting Structure and Time Variability of the SiS Lines J=14−13 and 15-14 in IRC+10216
Available formats
×

Send article to Google Drive

To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

The Maser-emitting Structure and Time Variability of the SiS Lines J=14−13 and 15-14 in IRC+10216
Available formats
×
×

Reply to: Submit a response

Please enter your response.

Your details

Please enter a valid email address.

Conflicting interests

Do you have any conflicting interests? *