Zobrazeno 1 - 10
of 268
pro vyhledávání: '"Persson, A V"'
Autor:
Murillo, N. M., Fuchs, C. M., Harsono, D., Sakai, N., Hacar, A., Johnstone, D., Mignon-Risse, R., Zeng, S., Hsieh, T. -H., Yang, Y. -L., Tobin, J. J., Persson, M. V.
Publikováno v:
A&A 689, A267 (2024)
Protostellar multiplicity is common at all stages and mass ranges. However, the factors that determine the multiplicity of protostellar systems have not been systematically characterized through their molecular gas. Nobeyama 45m Radio Observatory OTF
Externí odkaz:
http://arxiv.org/abs/2407.14702
Autor:
Yamato, Yoshihide, Furuya, Kenji, Aikawa, Yuri, Persson, Magnus V., Tobin, John J., Jørgensen, Jes K., Kama, Mihkel
The nitrogen chemical evolution during star and planet formation is still not fully understood. Ammonia (NH$_3$) is a key specie in the understanding of the molecular evolution in star-forming clouds and nitrogen isotope fractionation. In this paper,
Externí odkaz:
http://arxiv.org/abs/2210.16336
Autor:
Jensen, S. S., Jørgensen, J. K., Kristensen, L. E., Coutens, A., van Dishoeck, E. F., Furuya, K., Harsono, D., Persson, M. V.
Publikováno v:
A&A 650, A172 (2021)
Establishing the origin of the water D/H ratio in the Solar System is central to our understanding of the chemical trail of water during the star and planet formation process. Recent modeling suggests that comparisons of the D$_2$O/HDO and HDO/H$_2$O
Externí odkaz:
http://arxiv.org/abs/2104.13411
Autor:
Taquet, Vianney, Codella, Claudio, de Simone, Marta, López-Sepulcre, Ana, Pineda, Jaime E., Segura-Cox, Dominique, Ceccarelli, Cecilia, Caselli, Paola, Gusdorf, Antoine, Persson, Magnus V., team, the SOLIS
Context. Low-mass protostars drive powerful molecular outflows that can be observed with mm and sub-mm telescopes. Various sulfuretted species are known to be bright in shocks and could be used to infer the physical and chemical conditions throughout
Externí odkaz:
http://arxiv.org/abs/2002.05480
Autor:
Jensen, S. S., Jørgensen, J. K., Kristensen, L. E., Furuya, K., Coutens, A., van Dishoeck, E. F., Harsono, D., Persson, M. V.
Publikováno v:
A&A 631, A25 (2019)
The deuterium fractionation of water can serve as a tracer for the chemical and physical evolution of water during star formation and can constrain the origin of water in Solar System bodies. We determine the HDO/H$_2$O ratio in the inner warm gas to
Externí odkaz:
http://arxiv.org/abs/1909.10533
Interferometric observations of warm deuterated methanol in the inner regions of low-mass protostars
Autor:
Taquet, Vianney, Bianchi, Eleonora, Codella, Claudio, Persson, Magnus V., Ceccarelli, Cecilia, Cabrit, Sylvie, Jørgensen, Jes K., Kahane, Claudine, López-Sepulcre, Ana, Neri, Roberto
Publikováno v:
A&A 632, A19 (2019)
Methanol is a key species in astrochemistry since it is the most abundant organic molecule in the ISM and is thought to be the mother molecule of many complex organic species. Estimating the deuteration of methanol around young protostars is of cruci
Externí odkaz:
http://arxiv.org/abs/1909.08515
Autor:
Bjerkeli, Per, Ramsey, Jon P., Harsono, Daniel, Calcutt, Hannah, Kristensen, Lars E., van der Wiel, Matthijs H. D., Jørgensen, Jes K., Muller, Sébastien, Persson, Magnus V.
Publikováno v:
A&A 631, A64 (2019)
Context. The relationship between outflow launching and formation of accretion disks around young stellar objects is still not entirely understood, which is why spectrally and spatially resolved observations are needed. Recently, the Atacama Large Mi
Externí odkaz:
http://arxiv.org/abs/1909.05178
Autor:
Bøgelund, Eva G., Barr, Andrew G., Taquet, Vianney, Ligterink, Niels F. W., Persson, Magnus V., Hogerheijde, Michiel R., van Dishoeck, Ewine F.
Publikováno v:
A&A 628, A2 (2019)
The chemical composition of high-mass protostars reflects the physical evolution associated with different stages of star formation. In this study, the molecular inventory of the forming high-mass star AFGL 4176 is studied in detail at high angular r
Externí odkaz:
http://arxiv.org/abs/1906.06156
Autor:
Dall'Olio, Daria, Vlemmings, W. H. T., Persson, M. V., Alves, F. O., Beuther, H., Girart, J. M., Surcis, G., Torrelles, J. M., Van Langevelde, H. J.
Publikováno v:
A&A 626, A36 (2019)
Context. The role of magnetic fields during the formation of high-mass stars is not yet fully understood, and the processes related to the early fragmentation and collapse are largely unexplored today. The high-mass star forming region G9.62+0.19 is
Externí odkaz:
http://arxiv.org/abs/1905.00415
Autor:
Vlemmings, W. H. T., Lankhaar, B., Cazzoletti, P., Ceccobello, C., Dall'Olio, D., van Dishoeck, E. F., Facchini, S., Humphreys, E. M. L., Persson, M. V., Testi, L., Williams, J. P.
Despite their importance in the star formation process, measurements of magnetic field strength in proto-planetary discs remain rare. While linear polarisation of dust and molecular lines can give insight into the magnetic field structure, only obser
Externí odkaz:
http://arxiv.org/abs/1904.01632