Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Prieto, L. Velilla"'
Autor:
De Beck, E., Boyer, M. L., Bujarrabal, V., Decin, L., Fonfría, J. P., Groenewegen, M., Höfner, S., Jones, O., Kaminski, T., Maercker, M., Marigo, P., Matsuura, M., Meixner, M., Martínez, G. Quintana Lacaci, Scicluna, P., Szczerba, R., Prieto, L. Velilla, Vlemmings, W., Wiedner, M.
Models of the chemical evolution of the interstellar medium, galaxies, and the Universe rely on our understanding of the amounts and chemical composition of the material returned by stars and supernovae. Stellar yields are obtained from stellar-evolu
Externí odkaz:
http://arxiv.org/abs/1903.12025
Autor:
Fonfría, J. P., Fernández-López, M., Pardo, J. R., Agúndez, M., Contreras, C. Sánchez, Prieto, L. Velilla, Cernicharo, J., Santander-García, M., Quintana-Lacaci, G., Castro-Carrizo, A., Curiel, S.
We present new high angular resolution interferometer observations of the v=0 J=14-13 and 15-14 SiS lines towards IRC+10216, carried out with CARMA and ALMA. The maps, with angular resolutions of ~0.25"and 0.55", reveal (1) an extended, roughly unifo
Externí odkaz:
http://arxiv.org/abs/1805.05218
Autor:
Massalkhi, S., Agúndez, M., Cernicharo, J., Prieto, L. Velilla, Goicoechea, J. R., Quintana-Lacaci, G., Fonfría, J. P., Alcolea, J., Bujarrabal, V.
Publikováno v:
A&A 611, A29 (2018)
Silicon carbide dust is ubiquitous in circumstellar envelopes around C-rich AGB stars. However, the main gas-phase precursors leading to the formation of SiC dust have not yet been identified. The most obvious candidates among the molecules containin
Externí odkaz:
http://arxiv.org/abs/1710.11409
Autor:
Quintana-Lacaci, G., Cernicharo, J., Prieto, L. Velilla, Agúndez, M., Castro-Carrizo, A., Fonfría, J. P., Massalkhi, S., Pardo, J. R.
Publikováno v:
A&A 607, L5 (2017)
ALMA is providing us essential information on where certain molecules form. Observing where these molecules emission arises from, the physical conditions of the gas, and how this relates with the presence of other species allows us to understand the
Externí odkaz:
http://arxiv.org/abs/1710.09628
Autor:
Guélin, M., Patel, N. A., Bremer, M., Cernicharo, J., Castro-Carrizo, A., Pety, J., Fonfría, J. P., Agúndez, M., Santander-García, M., Quintana-Lacaci, G., Prieto, L. Velilla, Blundell, R., Thaddeus, P.
Publikováno v:
A&A 610, A4 (2018)
During their late pulsating phase, AGB stars expel most of their mass in the form of massive dusty envelopes, an event that largely controls the composition of interstellar matter. The envelopes, however, are distant and opaque to visible and NIR rad
Externí odkaz:
http://arxiv.org/abs/1709.04738
Autor:
Agundez, M., Cernicharo, J., Quintana-Lacaci, G., Castro-Carrizo, A., Prieto, L. Velilla, Marcelino, N., Guelin, M., Joblin, C., Martin-Gago, J. A., Gottlieb, C. A., Patel, N. A., McCarthy, M. C.
Publikováno v:
A&A 601, A4 (2017)
Linear carbon chains are common in various types of astronomical molecular sources. Possible formation mechanisms involve both bottom-up and top-down routes. We have carried out a combined observational and modeling study of the formation of carbon c
Externí odkaz:
http://arxiv.org/abs/1702.04429
Autor:
Prieto, L. Velilla, Contreras, C. Sánchez, Cernicharo, J., Agúndez, M., Quintana-Lacaci, G., Bujarrabal, V., Alcolea, J., Balança, C., Herpin, F., Menten, K. M., Wyrowski, F.
Publikováno v:
A&A 597, A25 (2017)
We carried out a millimeter wavelength line survey between 79 and 356 GHz with the IRAM-30m telescope to investigate the physical and chemical properties of the molecular envelope of the oxygen-rich AGB star IK Tau. We analysed the molecular lines de
Externí odkaz:
http://arxiv.org/abs/1609.01904
Autor:
Fonfria, J. P., Cernicharo, J., Richter, M. J., Fernandez-Lopez, M., Prieto, L. Velilla, Lacy, J. H.
We present high spectral resolution mid-IR observations of SiS towards the C-rich AGB star IRC+10216 carried out with the Texas Echelon-cross-Echelle Spectrograph mounted on the NASA Infrared Telescope Facility. We have identified 204 ro-vibrational
Externí odkaz:
http://arxiv.org/abs/1507.06037
Autor:
Agundez, M., Cernicharo, J., Quintana-Lacaci, G., Prieto, L. Velilla, Castro-Carrizo, A., Marcelino, N., Guelin, M.
IRC+10216 is a circumstellar envelope around a carbon-rich evolved star which contains a large variety of molecules. According to interferometric observations, molecules are distributed either concentrated around the central star or as a hollow shell
Externí odkaz:
http://arxiv.org/abs/1506.06951
Autor:
Cernicharo, J., McCarthy, M. C., Gottlieb, C. A., Agundez, M., Prieto, L. Velilla, Baraban, J. H., Changala, P. B., Guelin, M., Kahane, C., Martin-Drumel, M. A., Patel, N. A., Reilly, N. J., Stanton, J. F., Quintana-Lacaci, G., Thorwirth, S., Young, K. H.
We report the discovery in space of a disilicon species, SiCSi, from observations between 80 and 350 GHz with the IRAM 30m radio telescope. Owing to the close coordination between laboratory experiments and astrophysics, 112 lines have now been detec
Externí odkaz:
http://arxiv.org/abs/1505.01633