Zobrazeno 1 - 10
of 350
pro vyhledávání: '"Rocha W"'
Autor:
van Gelder, M. L., Francis, L., van Dishoeck, E. F., Tychoniec, Ł., Ray, T. P., Beuther, H., Garatti, A. Caratti o, Chen, Y., Devaraj, R., Gieser, C., Justtanont, K., Kavanagh, P. J., Nazari, P., Reyes, S., Rocha, W. R. M., Slavicinska, K., Güdel, M., Henning, Th., Lagage, P. -O., Wright, G.
The MIRI-MRS instrument onboard JWST allows for probing the molecular gas composition at mid-IR wavelengths at unprecedented resolution and sensitivity. It is important to study these features in low-mass embedded protostellar systems since the forma
Externí odkaz:
http://arxiv.org/abs/2410.01636
Autor:
Brunken, N. G. C., van Dishoeck, E. F., Slavicinska, K., Gouellec, V. J. M. le, Rocha, W. R. M., Francis, L., Tychoniec, L., van Gelder, M. L., Navarro, M. G., Boogert, A. C. A., Kavanagh, P. J., Nazari, P., Greene, T., Ressler, M. E., Majumdar, L.
The carbon isotope ratio is a powerful tool for studying the evolution of stellar systems. Recent detections of CO isotopologues in disks and exoplanet atmospheres pointed towards significant fractionation in these systems. In order to understand the
Externí odkaz:
http://arxiv.org/abs/2409.17237
Autor:
Bergner, Jennifer B., Sturm, J. A., Piacentino, Elettra L., McClure, M. K., Oberg, Karin I., Boogert, A. C. A., Dartois, E., Drozdovskaya, M. N., Fraser, H. J., Harsono, Daniel, Ioppolo, Sergio, Law, Charles J., Lis, Dariusz C., McGuire, Brett A., Melnick, Gary J., Noble, Jennifer A., Palumbo, M. E., Pendleton, Yvonne J., Perotti, Giulia, Qasim, Danna, Rocha, W. R. M., van Dishoeck, E. F.
Planet formation is strongly influenced by the composition and distribution of volatiles within protoplanetary disks. With JWST, it is now possible to obtain direct observational constraints on disk ices, as recently demonstrated by the detection of
Externí odkaz:
http://arxiv.org/abs/2409.08117
Autor:
Chen, Y., Rocha, W. R. M., van Dishoeck, E. F., van Gelder, M. L., Nazari, P., Slavicinska, K., Francis, L., Tabone, B., Ressler, M. E., Klaassen, P. D., Beuther, H., Boogert, A. C. A., Gieser, C., Kavanagh, P. J., Perotti, G., Gouellec, V. J. M. Le, Majumdar, L., Güdel, M., Henning, Th.
Publikováno v:
A&A 690, A205 (2024)
A rich inventory of complex organic molecules (COMs) has been observed in high abundances in the gas phase toward Class 0 protostars. These molecules are suggested to be formed in ices and sublimate in the warm inner envelope close to the protostar.
Externí odkaz:
http://arxiv.org/abs/2407.20066
Autor:
Sturm, J. A., McClure, M. K., Harsono, D., Bergner, J. B., Dartois, E., Boogert, A. C. A., Cordiner, M. A., Drozdovskaya, M. N., Ioppolo, S., Law, C. J., Lis, D. C., McGuire, B. A., Melnick, G. J., Noble, J. A., Öberg, K. I., Palumbo, M. E., Pendleton, Y. J., Perotti, G., Rocha, W. R. M., Urso, R. G., van Dishoeck, E. F.
Publikováno v:
A&A 689, A92 (2024)
Ice-coated dust grains provide the main reservoir of volatiles that play an important role in planet formation processes and may become incorporated into planetary atmospheres. However, due to observational challenges, the ice abundance distribution
Externí odkaz:
http://arxiv.org/abs/2407.09627
Autor:
Nazari, P., Rocha, W. R. M., Rubinstein, A. E., Slavicinska, K., Rachid, M. G., van Dishoeck, E. F., Megeath, S. T., Gutermuth, R., Tyagi, H., Brunken, N., Narang, M., Manoj, P., Watson, D. M., Evans II, N. J., Federman, S., Page, J. Muzerolle, Anglada, G., Beuther, H., Klaassen, P., Looney, L. W., Osorio, M., Stanke, T., Yang, Y. -L.
Publikováno v:
A&A 686, A71 (2024)
Nitrogen-bearing complex organic molecules have been commonly detected in the gas phase but not yet in interstellar ices. This has led to the long-standing question of whether these molecules form in the gas phase or in ices. $\textit{James Webb}$ Sp
Externí odkaz:
http://arxiv.org/abs/2401.07901
Autor:
Rocha, W. R. M., van Dishoeck, E. F., Ressler, M. E., van Gelder, M. L., Slavicinska, K., Brunken, N. G. C., Linnartz, H., Ray, T. P., Beuther, H., Garatti, A. Caratti o, Geers, V., Kavanagh, P. J., Klaassen, P. D., Justannont, K., Chen, Y., Francis, L., Gieser, C., Perotti, G., Tychoniec, Ł., Barsony, M., Majumdar, L., Gouellec, V. J. M. le, Chu, L. E. U., Lew, B. W. P., Henning, Th., Wright, G.
Complex organic molecules (COMs) detected in the gas phase are thought to be mostly formed on icy grains, but no unambiguous detection of icy COMs larger than CH3OH has been reported so far. Exploring this matter in more detail has become possible wi
Externí odkaz:
http://arxiv.org/abs/2312.06834
Autor:
Gieser, C., Beuther, H., van Dishoeck, E. F., Francis, L., van Gelder, M. L., Tychoniec, L., Kavanagh, P. J., Perotti, G., Garatti, A. Caratti o, Ray, T. P., Klaassen, P., Justtanont, K., Linnartz, H., Rocha, W. R. M., Slavicinska, K., Colina, L., Güdel, M., Henning, Th., Lagage, P. -O., Östlin, G., Vandenbussche, B., Waelkens, C., Wright, G.
Publikováno v:
A&A 679, A108 (2023)
(abridged) We study and compare the warm (>100 K) and cold (<100 K) material toward the high-mass star-forming region IRAS 23385+6053 (IRAS 23385 hereafter) combining high angular resolution observations in the mid-infrared (MIR) with the JWST Observ
Externí odkaz:
http://arxiv.org/abs/2309.10410
Autor:
Sturm, J. A., McClure, M. K., Beck, T. L., Harsono, D., Bergner, J. B., Dartois, E., Boogert, A. C. A., Chiar, J. E., Cordiner, M. A., Drozdovskaya, M. N., Ioppolo, S., Law, C. J., Linnartz, H., Lis, D. C., Melnick, G. J., McGuire, B. A., Noble, J. A., Öberg, K. I., Palumbo, M. E., Pendleton, Y. J., Perotti, G., Pontoppidan, K. M., Qasim, D., Rocha, W. R. M., Terada, H., Urso, R. G., van Dishoeck, E. F.
Ices are the main carriers of volatiles in protoplanetary disks and are crucial to our understanding of the chemistry that ultimately sets the organic composition of planets. The ERS program Ice Age on the JWST follows the ice evolution through all s
Externí odkaz:
http://arxiv.org/abs/2309.07817
Autor:
Perotti, G., Jørgensen, J. K., Rocha, W. R. M., Plunkett, A., de la Villarmois, E. Artur, Kristensen, L. E., Sewiło, M., Bjerkeli, P., Fraser, H. J., Charnley, S. B.
Publikováno v:
A&A 678, A78 (2023)
During the journey from the cloud to the disc, the chemical composition of the protostellar envelope material can be either preserved or processed to varying degrees depending on the surrounding physical environment. This works aims to constrain the
Externí odkaz:
http://arxiv.org/abs/2308.13598