S. Bottinelli, Jonathan P. Williams,
Evidence for a large scale flow of low density gas onto the Cepheus A young stellar cluster is presented. Observations of K-band near-infrared and multi-transition CS and N2H+ millimeter line emission are shown in relation to a sub-millimeter map of the cool dust around the most embedded stars. The near-infrared emission is offset from the dust peak suggesting a shift in the location of star formation over the history of the core. The CS emission is concentrated toward the core center but N2H+ peaks ...
Tópico(s): Molecular Spectroscopy and Structure
2004 - EDP Sciences | Astronomy and Astrophysics
S. Bottinelli, C. Ceccarelli, Jonathan P. Williams, B. Leflóch,
(Abridged) We aim to enlarge the number of known hot corinos and carry out a first comparative study with hot cores. The ultimate goal is to understand whether complex organic molecules form in the gas phase or on grain surfaces, and what the possible key parameters are. We observed millimeter rotational transitions of HCOOH, HCOOCH3, CH3OCH3, CH3CN, and C2H5CN in a sample of low-mass protostars with the IRAM-30m. Using the rotational diagram method coupled with the information about the sources' ...
Tópico(s): Atmospheric Ozone and Climate
2006 - EDP Sciences | Astronomy and Astrophysics
S. Bottinelli, C. Ceccarelli, B. Leflóch, Jonathan P. Williams, A. Castets, E. Caux, S. Cazaux, S. Maret, B. Parise, A. G. G. M. Tielens,
We report the detection of complex molecules (HCOOCH3, HCOOH, and CH3CN), signposts of a hot core-like region, toward the low-mass Class 0 source NGC 1333 IRAS 4A. This is the second low-mass protostar in which such complex molecules have been searched for and reported, the other source being IRAS 16293-2422. It is therefore likely that compact (a few tens of AU) regions of dense and warm gas, where the chemistry is dominated by the evaporation of grain mantles and where complex molecules are found, ...
Tópico(s): Atmospheric Ozone and Climate
2004 - IOP Publishing | The Astrophysical Journal
S. Bottinelli, C. Ceccarelli, R. Neri, Jonathan P. Williams, E. Caux, S. Cazaux, B. Leflóch, S. Maret, A. G. G. M. Tielens,
Complex organic molecules have previously been discovered in solar-type protostars, raising the questions of where and how they form in the envelope. Possible formation mechanisms include grain mantle evaporation, the interaction of the outflow with its surroundings, and/or the impact of UV/X-rays inside the cavities. In this Letter we present the first interferometric observations of two complex molecules, CH3CN and HCOOCH3, toward the solar-type protostar IRAS 16293-2422. The images show that ...
Tópico(s): Stellar, planetary, and galactic studies
2004 - IOP Publishing | The Astrophysical Journal
A. Punanova, P. Caselli, Siyi Feng, A. Chacón-Tanarro, C. Ceccarelli, R. Neri, F. Fontani, I. Jiménez-Serra, C. Vastel, L. Bizzocchi, Andy Pon, A. I. Vasyunin, S. Spezzano, P. Hily-Blant, L. Testi, S. Viti, Satoshi Yamamoto, F. O. Alves, R. Bachiller, Nadia Balucani, E. Bianchi, S. Bottinelli, E. Caux, R. Choudhury, C. Codella, F. Dulieu, Cécile Favre, Jonathan Holdship, A. Jaber Al-Edhari, C. Kahane, J. Laas, B. Leflóch, A. López-Sepulcre, J. Ospina-Zamudio, Yoko Oya, J. E. Pineda, L. Podio, D. Quenard, Albert Rimola, Nami Sakai, Ian Sims, V. Taquet, P. Theulé, Piero Ugliengo,
Towards the pre-stellar core L1544, the methanol (CH$_3$OH) emission forms an asymmetric ring around the core centre, where CH$_3$OH is mostly in solid form, with a clear peak 4000~au to the north-east of the dust continuum peak. As part of the NOEMA Large Project SOLIS (Seeds of Life in Space), the CH$_3$OH peak has been spatially resolved to study its kinematics and physical structure and to investigate the cause behind the local enhancement. We find that methanol emission is distributed in a ridge ...
Tópico(s): Stellar, planetary, and galactic studies
2018 - IOP Publishing | The Astrophysical Journal
S. Bottinelli, C. Ceccarelli, R. Neri, Jonathan P. Williams,
Abstract The formation and evolution of complex organic molecules in the early stages of solar-type protostars (Class 0 objects) is crucial as it sets the stage for the content in pre-biotic molecules of the subsequent proto-planetary nebula. In order to understand the chemistry of these Class 0 objects, it is necessary to perform interferometric observations which allow us to resolve the hot corino, that is the warm, dense inner region of the envelope of a Class 0 object, where the complex organic ...
Tópico(s): Stellar, planetary, and galactic studies
2008 - Cambridge University Press | Proceedings of the International Astronomical Union
C. Ceccarelli, P. Caselli, F. Fontani, R. Neri, A. López-Sepulcre, C. Codella, Siyi Feng, I. Jiménez-Serra, B. Leflóch, J. E. Pineda, C. Vastel, F. O. Alves, R. Bachiller, Nadia Balucani, E. Bianchi, L. Bizzocchi, S. Bottinelli, E. Caux, A. Chacón-Tanarro, R. Choudhury, A. Coutens, F. Dulieu, Cécile Favre, P. Hily-Blant, Jonathan Holdship, C. Kahane, A. Jaber Al-Edhari, J. Laas, J. Ospina, Yoko Oya, L. Podio, Andy Pon, A. Punanova, D. Quenard, Albert Rimola, Nami Sakai, Ian Sims, S. Spezzano, V. Taquet, L. Testi, P. Theulé, Piero Ugliengo, A. I. Vasyunin, S. Viti, L. Wiesenfeld, Satoshi Yamamoto,
Complex organic molecules have been observed for decades in the interstellar medium. Some of them might be considered as small bricks of the macromolecules at the base of terrestrial life. It is hence particularly important to understand organic chemistry in Solar-like star forming regions. In this article, we present a new observational project: SOLIS (Seeds Of Life In Space). This is a Large Project at the IRAM-NOEMA interferometer, and its scope is to image the emission of several crucial organic ...
Tópico(s): Stellar, planetary, and galactic studies
2017 - IOP Publishing | The Astrophysical Journal
Jonathan P. Williams, Joan Najita, Michael C. Liu, S. Bottinelli, John M. Carpenter, Lynne A. Hillenbrand, Markus R. Meyer, David R. Soderblom,
We report the detection of dust emission at submillimeter wavelengths from HD 107146, a G2 V star with an age estimated to lie between 80 and 200 Myr.The emission is resolved at 450 m with a size 300 AU Â 210 AU.A fit to the spectral energy distribution gives a dust temperature of 51 K and a dust mass of 0:10 M È .No excess emission above the photosphere was detected at 18 m, showing that there is very little warm dust and implying the presence of a large inner hole, at least 31 AU ($1 00 ) in radius, ...
Tópico(s): Astro and Planetary Science
2004 - IOP Publishing | The Astrophysical Journal
F. Fontani, C. Ceccarelli, Cécile Favre, P. Caselli, R. Neri, Ian Sims, C. Kahane, F. O. Alves, Nadia Balucani, E. Bianchi, E. Caux, A. Jaber Al-Edhari, A. López-Sepulcre, J. E. Pineda, R. Bachiller, L. Bizzocchi, S. Bottinelli, A. Chacón-Tanarro, R. Choudhury, C. Codella, A. Coutens, F. Dulieu, Siyi Feng, Albert Rimola, P. Hily-Blant, Jonathan Holdship, I. Jiménez-Serra, J. Laas, B. Leflóch, Yoko Oya, L. Podio, Andy Pon, A. Punanova, D. Quénard, Nami Sakai, S. Spezzano, V. Taquet, L. Testi, P. Theulé, Piero Ugliengo, C. Vastel, A. I. Vasyunin, S. Viti, Satoshi Yamamoto, L. Wiesenfeld,
The interstellar delivery of carbon atoms locked into molecules might be one of the key ingredients for the emergence of life. Cyanopolyynes are carbon chains delimited at their two extremities by an atom of hydrogen and a cyano group, so that they might be excellent reservoirs of carbon. The simplest member, HC3N, is ubiquitous in the galactic interstellar medium and found also in external galaxies. Thus, understanding the growth of cyanopolyynes in regions forming stars similar to our Sun, and ...
Tópico(s): Atmospheric Ozone and Climate
2017 - EDP Sciences | Astronomy and Astrophysics
A. de A. Schutzer, P. R. Rivera-Ortíz, B. Leflóch, A. Gusdorf, Cécile Favre, Dominique Segura-Cox, A. López-Sepulcre, R. Neri, J. Ospina-Zamudio, M. De Simone, C. Codella, S. Viti, L. Podio, J. E. Pineda, Ross O’Donoghue, C. Ceccarelli, P. Caselli, F. O. Alves, R. Bachiller, Nadia Balucani, E. Bianchi, L. Bizzocchi, S. Bottinelli, E. Caux, A. Chacón-Tanarro, F. Dulieu, Joan Enrique-Romero, F. Fontani, Siyi Feng, Jonathan Holdship, I. Jiménez-Serra, A. Jaber Al-Edhari, C. Kahane, V. Lattanzi, Yoko Oya, A. Punanova, Albert Rimola, Nami Sakai, S. Spezzano, Ian Sims, V. Taquet, L. Testi, P. Theulé, Piero Ugliengo, C. Vastel, A. I. Vasyunin, Fanny Vazart, S. Yamamoto, A. Witzel,
Protostellar jets are an important agent of star formation feedback, tightly connected with the mass-accretion process. The history of jet formation and mass-ejection provides constraints on the mass accretion history and the nature of the driving source. We want to characterize the time-variability of the mass-ejection phenomena at work in the Class 0 protostellar phase, in order to better understand the dynamics of the outflowing gas and bring more constraints on the origin of the jet chemical ...
Tópico(s): Atmospheric Ozone and Climate
2022 - EDP Sciences | Astronomy and Astrophysics
C. Codella, C. Ceccarelli, P. Caselli, Nadia Balucani, Vincenzo Barone, F. Fontani, B. Leflóch, L. Podio, S. Viti, Siyi Feng, R. Bachiller, E. Bianchi, F. Dulieu, I. Jiménez-Serra, Jonathan Holdship, R. Neri, J. E. Pineda, Andy Pon, Ian Sims, S. Spezzano, A. I. Vasyunin, F. O. Alves, L. Bizzocchi, S. Bottinelli, E. Caux, A. Chacón-Tanarro, R. Choudhury, A. Coutens, Cécile Favre, P. Hily-Blant, C. Kahane, A. Jaber Al-Edhari, J. Laas, A. López-Sepulcre, J. Ospina, Yoko Oya, A. Punanova, Cristina Puzzarini, D. Quénard, Albert Rimola, Nami Sakai, Dimitrios Skouteris, V. Taquet, L. Testi, P. Theulé, Piero Ugliengo, C. Vastel, Fanny Vazart, L. Wiesenfeld, Satoshi Yamamoto,
Context. Modern versions of the Miller-Urey experiment claim that formamide (NH2CHO) could be the starting point for the formation of metabolic and genetic macromolecules. Intriguingly, formamide is indeed observed in regions forming solar-type stars and in external galaxies.
Tópico(s): Astro and Planetary Science
2017 - EDP Sciences | Astronomy and Astrophysics
Massimo Venturelli, Russell S. Richardson,
... 1139, 1975.Link | ISI | Google Scholar9. He ZH , Bottinelli R , Pellegrino MA , Ferenczi MA , Reggiani C. ATP ... Hill, 2000.Google Scholar25. Stienen GJ , Kiers JL , Bottinelli R , Reggiani C. Myofibrillar ATPase activity in skinned ... Gregson, Simon A. Jobson, Tobias Von der Haar, Jonathan Wiles, andLouis Passfield1 September 2013 | Journal of Applied ...
Tópico(s): Sports Performance and Training
2012 - American Physiological Society | Journal of Applied Physiology
Héctor Hoyos, Alejandra Bottinelli-Wolleter, Jonathan Monroe B.,
No es por falta de prominencia que el rostro de Roberto Bolaño difÃcilmente figurará alguna vez en moneda corriente, como sucede con Gabriela Mistral en el billete de cinco mil pesos en Chile, Gabriel GarcÃa Márquez en el de cincuenta mil en Colombia o José Martà en el de a peso en Cuba. ¿Qué paÃs podrÃa reclamar simbólicamente a Bolaño, chileno, mexicano o español? En los ejemplos anteriores el billete media entre comunidades en un Estado nación que se identifican emblemáticamente ...
Tópico(s): Comparative Literary Analysis and Criticism
2023 - University of Chile | Revista chilena de literatura
Massimiliano Ansaldo, Cristiana Sazzi, Lorenza Brocca, Margherita Masi, Angela Maria Ruffo, Massimiliano Di Stasio, Nicholas Gulli, Simone Porcelli, Jonathan I. Quinlan, Bethan E. Phillips, Kenneth Smith, Philip J. Atherton, Marco Narici, Roberto Bottinelli, Maria Antonietta Pellegrino, Martino V. Franchi,
Tópico(s): Diet and metabolism studies
2024 - Lippincott Williams & Wilkins | Medicine & Science in Sports & Exercise
Marie Arnaud, Melissa Bakhos, Cornélia Rumpel, Marie‐France Dignac, Nicolas Bottinelli, Richard J. Norby, Philippe Geairon, Jonathan Deborde, Pierre Kostyrka, Julien Gernigon, Jean‐Christophe Lemesle, Pierre Polsenaere,
Abstract Salt marshes are among the most efficient blue carbon sinks worldwide. The fate of this carbon is uncertain due to limited knowledge about organic matter (OM) decomposition processes under sea-level rise. In an in-situ manipulative experiment, we compared salt marsh OM decomposition and quality across simulated sea-level scenarios (by modifying the inundation) and litter types (absorptive root, fine transportive root, leaves, and rhizomes of Halimione portulacoide ) for 170 days. The litter ...
Tópico(s): Geological formations and processes
2024 - Nature Portfolio | Communications Earth & Environment