Zobrazeno 1 - 10
of 68
pro vyhledávání: '"Alves, F. O."'
Autor:
Lattanzi, V., Alves, F. O., Padovani, M., Fontani, F., Caselli, P., Ceccarelli, C., López-Sepulcre, A., Favre, C., Neri, R., Chahine, L., Vastel, C., Evans, L.
Publikováno v:
A&A 671, A35 (2023)
The study of the early phases of star and planet formation is important to understand the physical and chemical history of stellar systems such as our own. In particular, protostars born in rich clusters are prototypes of the young Solar System. In t
Externí odkaz:
http://arxiv.org/abs/2301.10267
Autor:
Chahine, L., López-Sepulcre, A., Podio, L., Codella, C., Neri, R., Mercimek, S., De Simone, M., Caselli, P., Ceccarelli, C., Bouvier, M., Sakai, N., Fontani, F., Yamamoto, S., Alves, F. O., Lattanzi, V., Evans, L., Favre, C.
Publikováno v:
A&A 667, A6 (2022)
Star-forming molecular clouds are characterised by the ubiquity of intertwined filaments. The filaments have been observed in both high- and low-mass star-forming regions, and are thought to split into collections of sonic fibres. The locations where
Externí odkaz:
http://arxiv.org/abs/2209.03696
Autor:
Asensio, J. Ferrer, Spezzano, S., Caselli, P., Alves, F. O., Sipilä, O., Redaelli, E., Bizzocchi, L., Lique, F., Mullins, A.
Spectral line profiles of several molecules observed towards the pre-stellar core L1544 appear double-peaked. For abundant molecular species this line morphology has been linked to self-absorption. However, the physical process behind the double-peak
Externí odkaz:
http://arxiv.org/abs/2209.02489
Autor:
Chahine, L., López-Sepulcre, A., Neri, R., Ceccarelli, C., Mercimek, S., Codella, C., Bouvier, M., Bianchi, E., Favre, C., Podio, L., Alves, F. O., Sakai, N., Yamamoto, S.
Publikováno v:
A&A 657, A78 (2022)
Hot corinos are compact regions around solar-mass protostellar objects that are very rich in interstellar complex organic molecules (iCOMs). They are believed to represent the very early phases of our Solar System's birth, which was very likely also
Externí odkaz:
http://arxiv.org/abs/2112.08077
Publikováno v:
A&A 634, L15 (2020)
The azimuthal polarization patterns observed in some protoplanetary disks by ALMA at millimeter wavelength have raised doubts about their being produced by dust grains aligned with the magnetic field lines. These conclusions were based on the calcula
Externí odkaz:
http://arxiv.org/abs/2001.08400
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:
Redaelli, E., Alves, F. O., Caselli, P., Pineda, J. E., Friesen, R. K., Chacón-Tanarro, A., Matzner, C. D., Ginsburg, A., Rosolowsky, E., Keown, J., Offner, S. S. R., Di Francesco, J., Kirk, H., Myers, P. C., Hacar, A., Cimatti, A., Chen, H. H., Chen, M. C., Seo, Y. M., Lee, K. I.
Understanding the early stages of star formation is a research field of ongoing development, both theoretically and observationally. In this context, molecular data have been continuously providing observational constraints on the gas dynamics at dif
Externí odkaz:
http://arxiv.org/abs/1711.01794
Autor:
Franco, G. A. P., Alves, F. O.
Deep R-band CCD linear polarimetry collected for fields with lines-of-sight toward the Lupus I molecular cloud is used to investigate the properties of the magnetic field within this molecular cloud. The observed sample contains about 7000 stars, alm
Externí odkaz:
http://arxiv.org/abs/1504.08222
Autor:
Frau, P., Girart, J. M., Beltran, M. T., Padovani, M., Busquet, G., Morata, O., Masque, J. M., Alves, F. O., Sanchez-Monge, A., Franco, G. A. P., Estalella, R.
The Pipe nebula is a massive, nearby, filamentary dark molecular cloud with a low star-formation efficiency threaded by a uniform magnetic field perpendicular to its main axis. It harbors more than a hundred, mostly quiescent, very chemically young s
Externí odkaz:
http://arxiv.org/abs/1207.3310
We use R-band CCD linear polarimetry collected for about 12000 background field stars in 46 fields of view toward the Pipe nebula to investigate the properties of the polarization across this dark cloud. Based on archival 2MASS data we estimate that
Externí odkaz:
http://arxiv.org/abs/1008.5327