Zobrazeno 1 - 10
of 410
pro vyhledávání: '"Guélin, M."'
Autor:
Muller, S., Marti-Vidal, I., Combes, F., Gerin, M., Beelen, A., Horellou, C., Guelin, M., Aalto, S., Black, J. H., van Kampen, E.
Publikováno v:
A&A 674, A101 (2023)
Time variability of astronomical sources provides crude information on their typical size and on the implied physical mechanisms. PKS1830-211 is a remarkable radio-bright lensed quasar with a foreground molecular absorber at z=0.89. Small-scale morph
Externí odkaz:
http://arxiv.org/abs/2304.09002
Autor:
Cernicharo, J., Cabezas, C., Pardo, J. R., Agúndez, M., Roncero, O., Tercero, B., marcelino, N., Guélin, M., Endo, Y., deVicente, P.
Publikováno v:
A&A 672, L13 (2023)
We found four series of harmonically related lines in IRC\,+10216 with the Yebes\,40m and IRAM\,30m telescopes. The first series corresponds to a molecule with a rotational constant, $B$, of 1448.5994$\pm$0.0013 MHz and a distortion constant, $D$, of
Externí odkaz:
http://arxiv.org/abs/2304.05117
Autor:
Cabezas, C., Pardo, J. R., Agundez, M., Tercero, B., Marcelino, N., Endo, Y., de Vicente, P., Guelin, M., Cernicharo, J.
Publikováno v:
A&A 672, L12 (2023)
We report on the detection of a series of six lines in the ultra-deep Q-band integration toward IRC+10216 carried out with the Yebes 40m telescope, which are in harmonic relation with integer quantum numbers J from 12 to 18. After a detailed analysis
Externí odkaz:
http://arxiv.org/abs/2304.01066
Autor:
Cernicharo, J., Pardo, J. R., Cabezas, C., Agundez, M., Tercero, B., Marcelino, N., Fuentetaja, R., Guelin, M., de Vicente, P.
Publikováno v:
A&A 670, L19 (2023)
We report on the discovery of the C7N- anion towards the starless core TMC-1 and towards the carbon-rich evolved star IRC+10216. We used the data of the QUIJOTE line survey towards TMC-1 and found six lines in perfect harmonic frequency relation from
Externí odkaz:
http://arxiv.org/abs/2301.12819
Autor:
Changala, P. B., Gupta, H., Cernicharo, J., Pardo, J. R., Agúndez, M., Cabezas, C., Tercero, B., Guélin, M., McCarthy, M. C.
We report the detection of magnesium dicarbide, MgC$_2$, in the laboratory at centimeter wavelengths and assign $^{24}$MgC$_2$, $^{25}$MgC$_2$, and $^{26}$MgC$_2$ to 14 unidentified lines in the radio spectrum of the circumstellar envelope of the evo
Externí odkaz:
http://arxiv.org/abs/2210.17348
Autor:
Pardo, J. R., Cabezas, C., Fonfría, J. P., Agúndez, M., Tercero, B., de Vicente, P., Guélin, M., Cernicharo, J.
Publikováno v:
A&A 652, L13 (2021)
After the previous discovery of MgC$_3$N and MgC$_4$H in IRC+10216, a deeper Q-band (31.0-50.3 GHz) integration on this source had revealed two additional series of harmonically related doublets that we assigned on the basis of quantum mechanical cal
Externí odkaz:
http://arxiv.org/abs/2108.01480
Publikováno v:
A&A 636, L7 (2020)
We present the first detections of CH3SH, C3H+, C3N, HCOOH, CH2CHCN, and H2CN in an extragalactic source. Namely the spiral arm of a galaxy located at z=0.89 on the line of sight to the radio-loud quasar PKS 1830-211. OCS, SO2, and NH2CN were also de
Externí odkaz:
http://arxiv.org/abs/2004.02486
Autor:
Muller, S., Roueff, E., Black, J. H., Gerin, M., Guelin, M., Menten, K. M., Henkel, C., Aalto, S., Combes, F., Martin, S., Marti-Vidal, I.
Publikováno v:
A&A 637, A7 (2020)
Deuterium and lithium are light elements of high cosmological and astrophysical importance. In this work we report the first detection of deuterated molecules and a search for lithium hydride, 7LiH, at redshift z=0.89 in the spiral galaxy interceptin
Externí odkaz:
http://arxiv.org/abs/2003.13436
Autor:
Cernicharo, J., Velilla-Prieto, L., Agúndez, M., Pardo, J. R., Fonfría, J. P., Quintana-Lacaci, G., Cabezas, C., Bermúdez, C., Guélin, M.
We report on the detection of calcium isocyanide, CaNC, in the carbon-rich evolved star IRC+10216. We derived a column density for this species of (2.0$\pm$0.5)$\times$10$^{11}$ cm$^{-2}$. Based on the observed line profiles and the modelling of its
Externí odkaz:
http://arxiv.org/abs/1906.09352
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