Zobrazeno 1 - 10
of 162
pro vyhledávání: '"Sanna, Alberto"'
Understanding the launching mechanism of winds and jets remains one of the fundamental challenges in astrophysics. The Protostellar Outflows at the EarliesT Stages (POETS) survey has recently mapped the 3D velocity field of the protostellar winds in
Externí odkaz:
http://arxiv.org/abs/2408.11968
Autor:
Moscadelli, Luca, Oliva, André, Surcis, Gabriele, Sanna, Alberto, Beltrán, Maria Teresa, Kuiper, Rolf
Publikováno v:
A&A 680, A107 (2023)
Our goal is to measure and model the magnetic field distribution in the disk wind of the young stellar object (YSO) IRAS 21078+5211. We performed sensitive global Very Long Baseline Interferometry observations of the polarized emission of the 22 GHz
Externí odkaz:
http://arxiv.org/abs/2310.14106
Publikováno v:
published on-line in Nature Astronomy on August 11th 2022; view-only at: https://rdcu.be/cTukQ ; You Tube video: https://www.youtube.com/watch?v=EcmmvuVWa3Q
The formation of astrophysical objects of different nature and size, from black holes to gaseous giant planets, involves a disk-jet system, where the disk drives the mass accretion onto a central compact object and the jet is a fast collimated ejecti
Externí odkaz:
http://arxiv.org/abs/2209.00432
Autor:
Rodríguez-Kamenetzky, Adriana R., Carrasco-González, Carlos, Jorge, Luis Felipe Rodríguez, Ray, Tom P., Sanna, Alberto, Moscadelli, Luca, Hoare, Melvin, Galván-Madrid, Roberto, Shang, Hsien, Lizano, Susana, Eislöffel, Jochen, Lim, Jeremy, Torrelles, José M., Ho, Paul, Feeney-Johansson, Anton
We report new VLA and e-MERLIN high resolution and sensitivity images of the Triple Radio continuum Source in the Serpens star forming region. These observations allowed us to perform a deep multi-frequency, multi-epoch study by exploring the innermo
Externí odkaz:
http://arxiv.org/abs/2205.10422
Autor:
Carrasco-González, Carlos, Sanna, Alberto, Rodríguez-Kamenetzky, Adriana, Moscadelli, Luca, Hoare, Melvin, Torrelles, José M., Galván-Madrid, Roberto, Izquierdo, Andrés F.
Protostellar jets have a fundamental role at the earliest evolution of protostars of all masses. In the case of low-mass (<8 Msun) protostars, strong observational evidence exists that the launching and collimation is due to the X- and/or disk-wind m
Externí odkaz:
http://arxiv.org/abs/2106.01235
Autor:
Venturi, Tiziana, Paragi, Zsolt, Lindqvist, Michael, Bartkiewicz, Anna, Beswick, Rob, Bogdanović, Tamara, Brisken, Walter, Charlot, Patrick, Colomer, Francisco, Conway, John, Frey, Sándor, Guirado, José Carlos, Gurvits, Leonid, van Langevelde, Huib, Lobanov, Andrei, McKean, John, Morganti, Raffaella, Muxlow, Tom, Pérez-Torres, Miguel, Rygl, Kazi, Schulz, Robert, Szomoru, Arpad, de Vicente, Pablo, An, Tao, Anglada, Guillem, Argo, Megan, Azulay, Rebecca, van Bemmel, Ilse, Bocanegra, Tatiana, Boccardi, Biagina, Castangia, Paola, Chibueze, James, Cimò, Giuseppe, Climent, Juan-Bautista, Deane, Roger, Deller, Adam, Dodson, Richard, Duev, Dmitry, Etoka, Sandra, Fenech, Danielle, Gabányi, Krisztina, Gabuzda, Denise, Garrett, Michael, Gawroński, Marcin, Ghirlanda, Giancarlo, Giroletti, Marcello, Goddi, Ciriaco, Gómez, Jose Luis, Gray, Malcolm, Greaves, Jane, Hessels, Jason, van der Horst, Alexander, Hunter, Todd, Laing, Robert, Lal, Dharam Vir, Lambert, Sébastien, Loinard, Laurent, Marcote, Benito, Merloni, Andrea, Miller-Jones, James, Calvés, Guifré Molera, Moscadelli, Luca, Olofsson, Hans, Petrov, Leonid, Pizzo, Roberto, Possenti, Andrea, Quiroga-Nuñez, Luis Henry, Reynolds, Cormac, Richards, Anita, Rioja, Maria, Sanna, Alberto, Savolainen, Tuomas, Sbarrato, Tullia, Spingola, Cristiana, Surcis, Gabriele, Trigilio, Corrado, Varenius, Eskil, Vlemmings, Wouter, van Velzen, Sjoert, van der Walt, Johan
This white paper describes the science case for Very Long Baseline Interferometry (VLBI) and provides suggestions towards upgrade paths for the European VLBI Network (EVN). The EVN is a distributed long-baseline radio interferometric array, that oper
Externí odkaz:
http://arxiv.org/abs/2007.02347
Autor:
Bartkiewicz, Anna, Sanna, Alberto, Szymczak, Marian, Moscadelli, Luca, van Langevelde, Huib Jan, Wolak, Pawel
Publikováno v:
A&A 637, A15 (2020)
Ring-like distributions of the 6.7 GHz methanol maser spots at milliarcsecond scales represent a family of molecular structures of unknown origin associated with high-mass young stellar objects (HMYSOs). We aim to study G23.657-00.127, which has a ne
Externí odkaz:
http://arxiv.org/abs/2004.00916
Autor:
Moscadelli, Luca, Sanna, Alberto, Goddi, Ciriaco, Krishnan, Vasaant, Massi, Fabrizio, Bacciotti, Francesca
Publikováno v:
A&A 635, A118 (2020)
We wish to perform a statistical study of the location and motion of individual 22 GHz water maser cloudlets, characterized by sizes that are within a few au, with respect to the radio thermal emission from young stellar objects (YSO). For this purpo
Externí odkaz:
http://arxiv.org/abs/2002.06871
Autor:
Moscadelli, Luca, Sanna, Alberto, Goddi, Ciriaco, Krishnan, Vasaant, Massi, Fabrizio, Bacciotti, Francesca
Publikováno v:
A&A 631, A74 (2019)
The goal of the Protostellar Outflows at the EarliesT Stages (POETS) survey is to image the disk-outflow interface on scales of 10-100 au in a statistically significant sample (36) of luminous young stellar objects (YSO), targeting both the molecular
Externí odkaz:
http://arxiv.org/abs/1909.08374
Autor:
Hunter, Todd R., Bartkiewicz, Anna, Brisken, Walter, Brogan, Crystal L., Burns, Ross, Chibueze, James O., Cyganowski, Claudia J., Hirota, Tomoya, MacLeod, Gordon, Sanna, Alberto, Torrelles, José-María
The bright maser emission produced by several molecular species at centimeter to long millimeter wavelengths provides an essential tool for understanding the process of massive star formation. Unimpeded by the high dust optical depths that affect sho
Externí odkaz:
http://arxiv.org/abs/1903.09306