Zobrazeno 1 - 10
of 2 882
pro vyhledávání: '"Cox, P. M."'
Autor:
Gieser, C., Pineda, J. E., Segura-Cox, D. M., Caselli, P., Valdivia-Mena, M. T., Maureira, M. J., Hsieh, T. H., Busch, L. A., Bouscasse, L., Lopez-Sepulcre, A., Neri, R., Kuffmeier, M., Henning, Th., Semenov, D., Cunningham, N., Jimenez-Serra, I.
Context. The formation of stars has been subject to extensive studies in the past decades from molecular cloud to protoplanetary disk scales. It is still not fully understood how the surrounding material in a protostellar system, that often shows asy
Externí odkaz:
http://arxiv.org/abs/2410.18941
Autor:
Pineda, Jaime E., Soler, Juan D., Offner, Stella, Koch, Eric W., Segura-Cox, Dominique M., Neri, Roberto, Kuffmeier, Michael, Ivlev, Alexei V., Valdivia-Mena, Maria Teresa, Sipilä, Olli, Maureira, Maria Jose, Caselli, Paola, Cunningham, Nichol, Schmiedeke, Anika, Gieser, Caroline, Chen, Michael, Spezzano, Silvia
Publikováno v:
A&A 690, L5 (2024)
Context. Turbulence is a key component of molecular cloud structure. It is usually described by a cascade of energy down to the dissipation scale. The power spectrum for subsonic incompressible turbulence is $k^{-5/3}$, while for supersonic turbulenc
Externí odkaz:
http://arxiv.org/abs/2409.00392
Autor:
Franceschi, R., Henning, Th., Smirnov-Pinchukov, G. V., Semenov, D. A., Schwarz, K., Dutrey, A., Chapillon, E., Gorti, U., Guilloteau, S., Piétu, V., van Terwisga, S., Bouscasse, L., Caselli, P., Gieser, G., Hsieh, T. -H., Lopez-Sepulcre, A., Segura-Cox, D. M., Pineda, J. E., Maureira, M. J., Valdivia-Mena, M. T.
We aim to constrain the gas density and temperature distributions as well as gas masses in several T Tauri protoplanetary disks located in Taurus. We use the 12CO, 13CO, and C18O (2-1) isotopologue emission observed at 0.9 with the IRAM NOrthern Exte
Externí odkaz:
http://arxiv.org/abs/2406.16498
Autor:
Valdivia-Mena, María Teresa, Pineda, Jaime E., Caselli, Paola, Segura-Cox, Dominique M., Schmiedeke, Anika, Spezzano, Silvia, Offner, Stella, Ivlev, Alexei V., Küffmeier, Michael, Cunningham, Nichol, Neri, Roberto, Maureira, María José
Publikováno v:
A&A 687, A71 (2024)
The detection of narrow channels of accretion toward protostellar disks, known as streamers, have increased in number in the last few years. However, it is unclear if streamers are a common feature around protostars that were previously missed, or if
Externí odkaz:
http://arxiv.org/abs/2404.02144
Autor:
Hsieh, T. -H., Pineda, J. E., Segura-Cox, D. M., Caselli, P., Valdivia-Mena, M. T., Gieser, C., Maureira, M. J., Lopez-Sepulcre, A., Bouscasse, L., Neri, R., Möller, Th., Dutrey, A., Fuente, A., Semenov, D., Chapillon, E., Cunningham, N., Henning, Th., Pietu, V., Jimenez-Serra, I., Marino, S., Ceccarelli, C.
Publikováno v:
A&A 686, A289 (2024)
Complex Organic Molecules (COMs) have been found toward low-mass protostars but the origins of the COM emission are still unclear. It can be associated with, for example, hot corinos, outflows, and/or accretion shock/disk atmosphere. We have conducte
Externí odkaz:
http://arxiv.org/abs/2403.16892
Autor:
Taniguchi, Kotomi, Pineda, Jaime E, Caselli, Paola, Shimoikura, Tomomi, Friesen, Rachel K., Segura-Cox, Dominique M., Schmiedeke, Anika
Streamers bring gas from outer regions to protostellar systems and could change the chemical composition around protostars and protoplanetary disks. We have carried out mapping observations of carbon-chain species (HC$_3$N, HC$_5$N, CCH, and CCS) in
Externí odkaz:
http://arxiv.org/abs/2402.19099
Autor:
Pineda, Jaime E., Sipilä, Olli, Segura-Cox, Dominique M., Valdivia-Mena, Maria Teresa, Neri, Roberto, Kuffmeier, Michael, Ivlev, Alexei V., Offner, Stella S. R., Maureira, Maria Jose, Caselli, Paola, Spezzano, Silvia, Cunningham, Nichol, Schmiedeke, Anika, Chen, Mike
Publikováno v:
A&A 686, A162 (2024)
Electron fraction and cosmic-ray ionization rates (CRIR) in star-forming regions are important quantities in astrochemical modeling and are critical to the degree of coupling between neutrals, ions, and electrons, which regulates the dynamics of the
Externí odkaz:
http://arxiv.org/abs/2402.16202
Autor:
Semenov, D., Henning, Th., Guilloteau, S., Smirnov-Pinchukov, G., Dutrey, A., Chapillon, E., Pietu, V., Franceschi, R., Schwarz, K., van Terwisga, S., Bouscasse, L., Caselli, P., Ceccarelli, C., Cunningham, N., Fuente, A., Gieser, C., Hsieh, T. -H., Lopez-Sepulcre, A., Segura-Cox, D. M., Pineda, J. E., Maureira, M. J., Moeller, Th., Tafalla, M., Valdivia-Mena, M. T.
Publikováno v:
A&A 685, A126 (2024)
We are performing a line survey of 8 planet-forming Class II disks in Taurus with the IRAM NOrthern Extended Millimeter Array (NOEMA), as a part of the MPG-IRAM Observatory Program PRODIGE (PROtostars and DIsks: Global Evolution; PIs: P. Caselli and
Externí odkaz:
http://arxiv.org/abs/2402.14653
Autor:
Codella, C., Podio, L., De Simone, M., Ceccarelli, C., Ohashi, S., Chandler, C. J., Sakai, N., Pineda, J. E., Segura-Cox, D. M., Bianchi, E., Cuello, N., López-Sepulcre, A., Fedele, D., Caselli, P., Charnley, S., Johnstone, D., Zhang, Z. E., Maureira, M. J., Zhang, Y., Sabatini, G., Svoboda, B., Jiménez-Serra, I., Loinard, L., Mercimek, S., Murillo, N., Yamamoto, S.
The ALMA interferometer has played a key role in revealing a new component of the Sun-like star forming process: the molecular streamers, i.e. structures up to thousands of au long funneling material non-axisymmetrically to disks. In the context of t
Externí odkaz:
http://arxiv.org/abs/2402.10258
Autor:
Reynolds, Nickalas K., Tobin, John J., Sheehan, Patrick D., Sadavoy, Sarah I., Looney, Leslie W., Kratter, Kaitlin M., Li, Zhi-Yun, Segura-Cox, Dominique M., Kaib, Nathan A.
We present a statistical characterization of circumstellar disk orientations toward 12 protostellar multiple systems in the Perseus molecular cloud using the Atacama Large Millimeter/submillimeter Array at Band 6 (1.3 mm) with a resolution of 25 mas
Externí odkaz:
http://arxiv.org/abs/2312.13570