Zobrazeno 1 - 10
of 862
pro vyhledávání: '"Gelder, M."'
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:
Garatti, A. Caratti o, Ray, T. P., Kavanagh, P. J., McCaughrean, M. J., Gieser, C., Giannini, T., van Dishoeck, E. F., Justtanont, K., van Gelder, M. L., Francis, L., Beuther, H., Tychoniec, Ł., Nisini, B., Navarro, M. G., Devaraj, R., Reyes, S., Nazar, P., Klaassen, P., Güdel, M., Henning, Th., Lagage, P. O., Östlin, G., Vandenbussche, B., Waelkens, C., Wright, G.
Publikováno v:
A&A 691, A134 (2024)
We use the James Webb Space Telescope (JWST) and its Mid-Infrared Instrument (MIRI) (5-28 um), to study the embedded HH 211 flow. We map a 0.95'x0.22' region, covering the full extent of the blue-shifted lobe, the central protostellar region, and a s
Externí odkaz:
http://arxiv.org/abs/2409.16061
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:
Nazari, P., Tabone, B., Ahmadi, A., Cabrit, S., van Dishoeck, E. F., Codella, C., Ferreira, J., Podio, L., Tychoniec, Ł., van Gelder, M. L.
Publikováno v:
A&A 686, A201 (2024)
Protostellar disks are known to accrete, however, the exact mechanism that extracts the angular momentum and drives accretion in the low-ionization "dead" region of the disk is under debate. In recent years, magneto-hydrodynamic (MHD) disk winds have
Externí odkaz:
http://arxiv.org/abs/2402.18631
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:
Derkink, A. R., Ramírez-Tannus, M. C., Kaper, L., de Koter, A., Backs, F., Poorta, J., van Gelder, M. L.
It is a challenge to study the formation process of massive stars: their formation time is short, they are few, often deeply embedded, and at relatively large distances. Our strategy is to study the outcome of the star formation process and to look f
Externí odkaz:
http://arxiv.org/abs/2310.04287
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:
Chen, Y., van Gelder, M. L., Nazari, P., Brogan, C. L., van Dishoeck, E. F., Linnartz, H., Jørgensen, J. K., Hunter, T. R., Wilkins, O. H., Blake, G. A., Caselli, P., Chuang, K. -J., Codella, C., Cooke, I., Drozdovskaya, M. N., Garrod, R. T., Ioppolo, S., Jin, M., Kulterer, B. M., Ligterink, N. F. W., Lipnicky, A., Loomis, R., Rachid, M. G., Spezzano, S., McGuire, B. A.
Publikováno v:
A&A 678, A137 (2023)
Complex organic molecules (COMs) have been observed to be abundant in the gas phase toward protostars. Deep line surveys have been carried out only for a limited number of well-known high-mass star forming regions using the Atacama Large Millimeter/s
Externí odkaz:
http://arxiv.org/abs/2308.02688
Autor:
van Dishoeck, Ewine F., Grant, S., Tabone, B., van Gelder, M., Francis, L., Tychoniec, L., Bettoni, G., Arabhavi, A. M., Gasman, D., Nazari, P., Vlasblom, M., Kavanagh, P., Christiaens, V., Klaassen, P., Beuther, H., Henning, Th., Kamp, I.
Publikováno v:
Faraday Discussion "Astrochemistry at high resolution", 2023
Early results from the JWST-MIRI guaranteed time programs on protostars (JOYS) and disks (MINDS) are presented. Thanks to the increased sensitivity, spectral and spatial resolution of the MIRI spectrometer, the chemical inventory of the planet-formin
Externí odkaz:
http://arxiv.org/abs/2307.11817