Zobrazeno 1 - 10
of 731
pro vyhledávání: '"Herczeg G."'
We show that the distribution of observed accretion rates is a powerful diagnostic of protoplanetary disc physics. Accretion due to turbulent ("viscous") transport of angular momentum results in a fundamentally different distribution of accretion rat
Externí odkaz:
http://arxiv.org/abs/2306.17218
Autor:
Gangi, M., Nisini, B., Manara, C. F., France, K., Antoniucci, S., Biazzo, K., Giannini, T., Herczeg, G. J., Alcalá, J. M., Frasca, A., Maucó, K., Campbell-White, J., Siwak, M., Venuti, L., Schneider, P. C., Kóspál, Á., Garatti, A. Caratti o, Fiorellino, E., Rigliaco, E., Yadav, R. K.
Publikováno v:
A&A 675, A153 (2023)
Observing the spatial distribution and excitation processes of atomic and molecular gas in the inner regions (< 20 au) of young (< 10 Myr) protoplanetary disks helps us to understand the conditions for the formation and evolution of planetary systems
Externí odkaz:
http://arxiv.org/abs/2305.18940
Autor:
Claes, R. A. B., Manara, C. F., Garcia-Lopez, R., Natta, A., Fang, M., Fockter, Z. P., Ábrahám, P., Alcalá, J. M., Campbell-White, J., Garatti, A. Caratti o, Covino, E., Fedele, D., Frasca, A., Gameiro, J. F., Herczeg, G. J., Kóspál, Á., Petr-Gotzens, M. G., Rosotti, G., Venuti, L., Zsidi, G.
Publikováno v:
A&A 664, L7 (2022)
The processes regulating protoplanetary disk evolution are constrained by studying how mass accretion rates scale with stellar and disk properties. The spread in these relations can be used as a constraint to the models of disk evolution, but only if
Externí odkaz:
http://arxiv.org/abs/2208.01447
Radiative transfer modelling offers a powerful tool for understanding the enigmatic hydrogen emission lines from T Tauri stars. This work compares optical and near-IR spectroscopy of 29 T Tauri stars with our grid of synthetic line profiles. The arch
Externí odkaz:
http://arxiv.org/abs/2205.08523
Autor:
Espaillat, C. C., Herczeg, G. J., Thanathibodee, T., Pittman, C., Calvet, N., Arulanantham, N., France, K., Serna, Javier, Hernandez, J., Kospal, A., Walter, F. M., Frasca, A., Fischer, W. J., Johns-Krull, C. M., Schneider, P. C., Robinson, C., Edwards, Suzan, Abraham, P., Fang, Min, Erkal, J., Manara, C. F., Alcala, J. M., Alecian, E., Alexander, R. D., Alonso-Santiago, J., Antoniucci, Simone, Ardila, David R., Banzatti, Andrea, Benisty, M., Bergin, Edwin A., Biazzo, Katia, Briceno, Cesar, Campbell-White, Justyn, Cleeves, L. Ilsedore, Coffey, Deirdre, Eisloffel, Jochen, Facchini, Stefano, Fedele, D., Fiorellino, Eleonora, Froebrich, Dirk, Gangi, Manuele, Giannini, Teresa, Grankin, K., Gunther, Hans Moritz, Guo, Zhen, Hartmann, Lee, Hillenbrand, Lynne A., Hinton, P. C., Kastner, Joel H., Koen, Chris, Mauco, K., Mendigutia, I., Nisini, B., Panwar, Neelam, Principe, D. A., Robberto, Massimo, Sicilia-Aguilar, A., Valenti, Jeff A., Wendeborn, J., Williams, Jonathan P., Xu, Ziyan, Yadav, R. K.
The Hubble UV Legacy Library of Young Stars as Essential Standards (ULLYSES) Director's Discretionary Program of low-mass pre-main-sequence stars, coupled with forthcoming data from ALMA and JWST, will provide the foundation to revolutionize our unde
Externí odkaz:
http://arxiv.org/abs/2201.06502
Autor:
Rota, A. A., Manara, C. F., Miotello, A., Lodato, G., Facchini, S., Koutoulaki, M., Herczeg, G., Long, F., Tazzari, M., Cabrit, S., Harsono, D., Menard, F., Pinilla, P., van der Plas, G., Ragusa, E., Yen, H. -W.
Publikováno v:
A&A 662, A121 (2022)
The formation of multiple stellar systems is a natural by-product of the star-formation process, and its impact on the properties of protoplanetary discs and on the formation of planets is still to be fully understood. To date, no detailed uniform st
Externí odkaz:
http://arxiv.org/abs/2201.03588
Autor:
Frasca, A., Boffin, H. M. J., Manara, C. F., Alcalá, J. M., Ábrahám, P., Covino, E., Fang, M., Gangi, M., Herczeg, G. J., Kóspál, Á., Venuti, L., Walter, F. M., Alonso-Santiago, J., Grankin, K., Siwak, M., Alecian, E., Cabrit, S.
Publikováno v:
A&A 656, A138 (2021)
We present results of our study of the close pre-main sequence spectroscopic binary CVSO 104 in Ori OB1, based on data obtained within the PENELLOPE legacy program. We derive, for the first time, the orbital elements of the system and the stellar par
Externí odkaz:
http://arxiv.org/abs/2109.06305
Autor:
Manara, C. F., Frasca, A., Venuti, L., Siwak, M., Herczeg, G. J., Calvet, N., Hernandez, J., Tychoniec, Ł., Gangi, M., Alcalá, J. M., Boffin, H. M. J., Nisini, B., Robberto, M., Briceno, C., Campbell-White, J., Sicilia-Aguilar, A., McGinnis, P., Fedele, D., Kóspál, Á., Ábrahám, P., Alonso-Santiago, J., Antoniucci, S., Arulanantham, N., Bacciotti, F., Banzatti, A., Beccari, G., Benisty, M., Biazzo, K., Bouvier, J., Cabrit, S., Garatti, A. Caratti o, Coffey, D., Covino, E., Dougados, C., Eislöffel, J., Ercolano, B., Espaillat, C. C., Erkal, J., Facchini, S., Fang, M., Fiorellino, E., Fischer, W. J., France, K., Gameiro, J. F., Lopez, R. Garcia, Giannini, T., Ginski, C., Grankin, K., Günther, H. M., Hartmann, L., Hillenbrand, L. A., Hussain, G. A. J., James, M. M., Koutoulaki, M., Lodato, G., Maucó, K., Mendigutía, I., Mentel, R., Miotello, A., Oudmaijer, R. D., Rigliaco, E., Rosotti, G. P., Sanchis, E., Schneider, P. C., Spina, L., Stelzer, B., Testi, L., Thanathibodee, T., Vink, J. S., Walter, F. M., Williams, J. P., Zsidi, G.
Publikováno v:
A&A 650, A196 (2021)
The evolution of young stars and disks is driven by the interplay of several processes, notably accretion and ejection of material. Critical to correctly describe the conditions of planet formation, these processes are best probed spectroscopically.
Externí odkaz:
http://arxiv.org/abs/2103.12446
Autor:
Schneider P. C., Eislöffel J., Güdel M., Günther H.M., Herczeg G., Robrade J., Schmitt J.H.M.M.
Publikováno v:
EPJ Web of Conferences, Vol 64, p 08007 (2014)
Classical T Tauri stars (CTTSs) drive strong outflows with temperatures from about 103 K up to a few 106 K. These outflows regulate the angular momentum balance and are therefore tightly related to the accretion process. However, the outflow driving
Externí odkaz:
https://doaj.org/article/e3df3545c59f4b93a6441721f60aea36
AA Tau is a classical T Tauri star with a highly inclined, warped circumstellar disk. For decades, AA Tau exhibited photometric and spectroscopic variability that were successfully modelled as occultations of the primary star by circumstellar materia
Externí odkaz:
http://arxiv.org/abs/2012.02415