Zobrazeno 1 - 10
of 1 257
pro vyhledávání: '"Eislöffel, J."'
Autor:
Sperling, T., Eislöffel, J., Manara, C. F., Campbell-White, J., Schneider, C., Frasca, A., Maucó, K., Siwak, M., Fuhrmeister, B., Lopez, R. Garcia
The main goal of this study is to screen the PENELLOPE/UVES targets for outflow activity and find microjets via spectro-astrometry in, e.g., the [OI]$\lambda$6300 line. In total, 34 T\,Tauri stars of the PENELLOPE survey have been observed with the h
Externí odkaz:
http://arxiv.org/abs/2405.11328
Autor:
Wolf, V., Stecklum, B., Garatti, A. Caratti o, Boley, P. A., Fischer, Ch., Harries, T., Eislöffel, J., Linz, H., Ahmadi, A., Kobus, J., Haubois, X., Matter, A., Cruzalebes, P.
Publikováno v:
A&A 688, A8 (2024)
Accretion bursts from low-mass young stellar objects (YSOs) are known for many decades. In recent years, the first accretion bursts of massive YSOs (MYSOs) have been observed. These phases of intense protostellar growth are of particular importance f
Externí odkaz:
http://arxiv.org/abs/2405.10427
Autor:
Nisini, B., Navarro, M. G., Giannini, T., Antoniucci, S., Kavanagh, P. J., Hartigan, P., Bacciotti, F., Garatti, A. Caratti o, Crespo, A. Noriega, van Dishoek, E., Whelan, E., Arce, H. G., Cabrit, S., Coffey, D., Fedele, D., Eisloeffel, J., Palumbo, M. E., Podio, L., Ray, T. P., Schultze, M., Urso, R. G., Alcala', J. M., Bautista, M. A., Codella, C., Greene, T. G., Manara, C. F.
We present the first results of the JWST program PROJECT-J (PROtostellar JEts Cradle Tested with JWST ), designed to study the Class I source HH46 IRS and its outflow through NIRSpec and MIRI spectroscopy (1.66 to 28 micron). The data provide line-im
Externí odkaz:
http://arxiv.org/abs/2404.06878
Autor:
Cesaroni, R., Moscadelli, L., Garatti, A. Caratti o, Eisloeffel, J., Fedriani, R., Neri, R., Ray, T., Sanna, A., Stecklum, B.
We report new Very Large Array high-resolution observations of the radio jet from the outbursting high-mass star S255IR~NIRS3. The images at 6, 10, and 22.2 GHz confirm the existence of a new lobe emerging to the SW and expanding at a mean speed of ~
Externí odkaz:
http://arxiv.org/abs/2403.02999
Autor:
Cesaroni, R., Moscadelli, L., Garatti, A. Caratti o, Eisloeffel, J., Fedriani, R., Neri, R., Ray, T., Sanna, A., Stecklum, B.
Observations indicate that the accretion process in star formation may occur through accretion outbursts. This phenomenon has also now been detected in a few young massive (proto)stars (>8 Msun). The recent outburst at radio wavelengths of the massiv
Externí odkaz:
http://arxiv.org/abs/2310.18002
Autor:
Feeney-Johansson, A., Purser, S. J. D., Ray, T. P., Carrasco-González, C., Rodríguez-Kamenetzky, A., Eislöffel, J., Lim, J., Galván-Madrid, R., Lizano, S., Rodríguez, L. F., Shang, H., Ho, P., Hoare, M.
Publikováno v:
A&A 677, A97 (2023)
Using observations with e-MERLIN and the VLA, together with archival data from ALMA, we obtain high-resolution radio images of two binary YSOs: L1551 IRS 5 and L1551 NE, covering a wide range of frequencies from 5 - 336 GHz, and resolving emission fr
Externí odkaz:
http://arxiv.org/abs/2307.12746
Autor:
Burns, R. A., Uno, Y., Sakai, N., Blanchard, J., Rosli, Z., Orosz, G., Yonekura, Y., Tanabe, Y., Sugiyama, K., Hirota, T., Kim, Kee-Tae, Aberfelds, A., Volvach, A. E., Bartkiewicz, A., Garatti, A. Caratti o, Sobolev, A. M., Stecklum, B., Brogan, C., Phillips, C., Ladeyschikov, D. A., Johnstone, D., Surcis, G., MacLeod, G. C., Linz, H., Chibueze, J. O., Brand, J., Eislöffel, J., Hyland, L., Uscanga, L., Olech, M., Durjasz, M., Bayandina, O., Breen, S., Ellingsen, S. P., Heever, S. P. van den, Hunter, T. R., Chen, X.
High-mass protostars (M$_{\star} >$ 8 M$_{\odot}$) are thought to gain the majority of their mass via short, intense bursts of growth. This episodic accretion is thought to be facilitated by gravitationally unstable and subsequently inhomogeneous acc
Externí odkaz:
http://arxiv.org/abs/2304.14740
Autor:
Burns, R. A., Sugiyama, K., Hirota, T., Kim, Kee-Tae, Sobolev, A. M., Stecklum, B., MacLeod, G. C., Yonekura, Y., Olech, M., Orosz, G., Ellingsen, S. P., Hyland, L., Garatti, A. Caratti o, Brogan, C., Hunter, T. R., Phillips, C., Heever, S. P. van den, Eislöffel, J., Linz, H., Surcis, G., Chibueze, J. O., Baan, W., Kramer, B.
High-mass stars are thought to accumulate much of their mass via short, infrequent bursts of disk-aided accretion. Such accretion events are rare and difficult to observe directly but are known to drive enhanced maser emission. In this Letter we repo
Externí odkaz:
http://arxiv.org/abs/2304.14739
Autor:
Melnikov, S. Yu., Boley, P. A., Nikonova, N. S., Garatti, A. Caratti o, Lopez, R. Garcia, Stecklum, B., Eislöffel, J., Weigelt, G.
Publikováno v:
A&A 673, A156 (2023)
$Context.$ The YSO Th 28 possesses a highly collimated jet, which clearly exhibits an asymmetric brightness of its jet lobes at optical and NIR wavelengths. There may be asymmetry in the jet plasma parameters in opposite jet lobes (e.g. electron dens
Externí odkaz:
http://arxiv.org/abs/2304.12974
Autor:
Kobak, A., Bartkiewicz, A., Szymczak, M., Olech, M., Durjasz, M., Wolak, P., Chibueze, J. O., Hirota, T., Eislöffel, J., Stecklum, B., Sobolev, A., Bayandina, O., Orosz, G., Burns, R. A., Kim, Kee-Tae, Heever, S. P. van den
Publikováno v:
A&A 671, A135 (2023)
Recent studies have shown that 6.7 GHz methanol maser flares can be a powerful tool for verifying the mechanisms of maser production and even the specific signatures of accretion rate changes in the early stages of high-mass star formation. We charac
Externí odkaz:
http://arxiv.org/abs/2302.02723