Zobrazeno 1 - 10
of 1 174
pro vyhledávání: '"A Blant"'
Autor:
Sil, Milan, Das, Ankan, Das, Ramkrishna, Pandey, Ruchi, Faure, Alexandre, Wiesemeyer, Helmut, Hily-Blant, Pierre, Lique, François, Caselli, Paola
HeH$^+$ was the first heteronuclear molecule to form in the metal-free Universe after the Big Bang. The molecule gained significant attention following its first circumstellar detection in the young and dense planetary nebula NGC 7027. We target some
Externí odkaz:
http://arxiv.org/abs/2411.05498
Autor:
Baez, Paula Moraga, Kastner, Joel H., Bublitz, Jesse, Alcolea, Javier, Santander-Garcia, Miguel, Forveille, Thierry, Hily-Blant, Pierre, Balick, Bruce, Montez Jr., Rodolfo, Gieser, Caroline
We present early results from our program of ALMA Band 6 (1.3mm) molecular line mapping of a sample of nearby, well-studied examples of high-excitation, bipolar/pinched-waist and molecule-rich planetary nebulae (Hubble 5 and NGC 2440, 2818, 2899, 630
Externí odkaz:
http://arxiv.org/abs/2403.08961
Autor:
Poch, Olivier, Istiqomah, Istiqomah, Quirico, Eric, Beck, Pierre, Schmitt, Bernard, Theulé, Patrice, Faure, Alexandre, Hily-Blant, Pierre, Bonal, Lydie, Raponi, Andrea, Ciarniello, Mauro, Rousseau, Batiste, Potin, Sandra, Brissaud, Olivier, Flandinet, Laurène, Filacchione, Gianrico, Pommerol, Antoine, Thomas, Nicolas, Kappel, David, Mennella, Vito, Moroz, Lyuba, Vinogradoff, Vassilissa, Arnold, Gabriele, Erard, Stéphane, Bockelée-Morvan, Dominique, Leyrat, Cédric, Capaccioni, Fabrizio, de Sanctis, Maria Cristina, Longobardo, Andrea, Mancarella, Francesca, Palomba, Ernesto, Tosi, Federico
Publikováno v:
European Conference on Laboratory Astrophysics ECLA2020, Sep 2021, Anacapri, Italy. pp.271 - 279
The nucleus of comet 67P/Churyumov-Gerasimenko exhibits a broad spectral reflectance feature around 3.2 $\mu$m, which is omnipresent in all spectra of the surface, and whose attribution has remained elusive since its discovery. Based on laboratory ex
Externí odkaz:
http://arxiv.org/abs/2311.11712
Autor:
Bublitz, Jesse, Kastner, Joel H., Hily-Blant, Pierre, Forveille, Thierry, Santander-García, Miguel, Alcolea, Javier, Bujarrabal, Valentin, Wilner, David J., Montez, Jr., Rodolfo, Aleman, Isabel
The young and well-studied planetary nebula NGC 7027 harbors significant molecular gas that is irradiated by luminous, point-like UV (central star) and diffuse (shocked nebular) X-ray emission. This nebula represents an excellent subject to investiga
Externí odkaz:
http://arxiv.org/abs/2209.13680
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 487, Issue 3, p.3392-3403 (2019)
The nuclear-spin chemistry of interstellar water is investigated using the University of Grenoble Alpes Astrochemical Network (UGAN). This network includes reactions involving the different nuclear-spin states of the hydrides of carbon, nitrogen, oxy
Externí odkaz:
http://arxiv.org/abs/2201.02068
Publikováno v:
A&A 658, A168 (2022)
The abundance of volatile sulfur in dense clouds is long-standing problem in studies of the physics and chemistry of star-forming regions. Sulfur is an important species because its low ionization potential may possibly make it an important charge ca
Externí odkaz:
http://arxiv.org/abs/2112.01076
Autor:
Bublitz, Jesse, Kastner, Joel H., Hily-Blant, Pierre, Forveille, Thierry, Santander-García, Miguel, Alcolea, Javier, Bujarrabal, Valentin
Publikováno v:
A&A 659, A197 (2022)
Observations of molecular clouds, prestellar cores, and protoplanetary disks have established that the HNC/HCN ratio may be a potent diagnostic of molecular gas physical conditions. The processes that govern the relative abundances of these molecules
Externí odkaz:
http://arxiv.org/abs/2111.08816
Autor:
Demes, S., Lique, François, Faure, Alexandre, van der Tak, Floris, Rist, Claire, Hily-Blant, Pierre
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P - Oxford Open Option A, 2021
The hydronium cation plays a crucial role in interstellar oxygen and water chemistry. While its spectroscopy was extensively investigated earlier, the collisional excitation of H$_3$O$^+$ is not well studied yet. In this work we present state-to-stat
Externí odkaz:
http://arxiv.org/abs/2111.01477
Publikováno v:
A&A 646, A59 (2021)
High-resolution observations of edge-on proto-planetary disks in emission from molecular species sampling different critical densities and formation pathways offer the opportunity to trace the vertical chemical and physical structures of protoplaneta
Externí odkaz:
http://arxiv.org/abs/2012.10466
Autor:
Bacmann, A., Faure, A., Hily-Blant, P., Kobayashi, K., Ozeki, H., Yamamoto, S., Pagani, L., Lique, F.
Although ammonia is an abundant molecule commonly observed towards the dense interstellar medium, it has not yet been established whether its main formation route is from gas-phase ion-molecule reactions or grain-surface hydrogen additions on adsorbe
Externí odkaz:
http://arxiv.org/abs/2009.12382