Zobrazeno 1 - 10
of 1 148
pro vyhledávání: '"Pardo, J. P."'
We introduce a relativistic version of the non-self-adjoint operator obtained by a dilation analytic transformation of the quantum harmonic oscillator. While the spectrum is real and discrete, we show that the eigenfunctions do not form a basis and t
Externí odkaz:
http://arxiv.org/abs/2411.16494
Autor:
Pardo, J. R., De Breuck, C., Muders, D., González, J., Pérez-Beaupuits, J. P., Cernicharo, J., Prigent, C., Serabyn, E., Montenegro-Montes, F. M., Mroczkowski, T., Phillips, N., Villard, E.
Due to the importance of a reference atmospheric radiative transfer model for both planning and calibrating ground-based observations at millimetre and submillimetre wavelengths, we have undertaken a validation campaign consisting of acquiring atmosp
Externí odkaz:
http://arxiv.org/abs/2411.03134
Autor:
Fuentetaja, R., Agúndez, M., Cabezas, C., Tercero, B., Marcelino, N., Pardo, J. R., de Vicente, P., Cernicharo, J.
We present the first detection in space of 1,4-pentadiyne. It has been found towards TMC-1 with the QUIJOTE line survey in the 31-50 GHz range. We observed a total of 17 transitions with J = 2 up to 13 and Ka = 0, 1 and 2. The observed transitions al
Externí odkaz:
http://arxiv.org/abs/2407.07466
Publikováno v:
A&A 688, A16 (2024)
The spatial distribution of molecules in AGB circumstellar envelopes is regulated by different processes. In the outer layers all molecules are destroyed due to the interaction with interstellar ultraviolet photons. Here we aim to characterize in a c
Externí odkaz:
http://arxiv.org/abs/2405.19922
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:
Fuentetaja, R., Bermúdez, C ., Cabezas, C., Agúndez, M., Tercero, B., Marcelino, N., Pardo, J. R., Margulès, L., Motiyenko, R. A., Guillemin, J. -C., de Vicente, P., Cernicharo, J.
Publikováno v:
A&A 671, L6 (2023)
We report the detection of methyl ketene towards TMC-1 with the QUIJOTE line survey. Nineteen rotational transitions with rotational quantum numbers ranging from J = 3 up to J = 5 and Ka =< 2 were identified in the frequency range 32.0-50.4 GHz, 11 o
Externí odkaz:
http://arxiv.org/abs/2302.08825
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:
Fuentetaja, R., Agúndez, M., Cabezas, C., Tercero, B., Marcelino, N., Pardo, J. R., de Vicente, P., Cernicharo, J.
Publikováno v:
A&A 667, L4 (2022)
We report on the discovery of two new molecules, HCCCHCCC and HCCCCS, towards the starless core TMC-1 in the Taurus region from the QUIJOTE line survey in the 31.1-50.2 GHz frequency range. We identify a total of twenty-nine lines of HCCCHCCC and six
Externí odkaz:
http://arxiv.org/abs/2210.11379