Zobrazeno 1 - 10
of 215
pro vyhledávání: '"Bitsch B"'
Publikováno v:
A&A 677, L7 (2023)
The origin of the elevated C/O ratios in discs around late M dwarfs compared to discs around solar-type stars is not well understood. Here we endeavour to reproduce the observed differences in the disc C/O ratios as a function of stellar mass using a
Externí odkaz:
http://arxiv.org/abs/2308.15128
Autor:
Mah, J., Bitsch, B.
Publikováno v:
A&A 673, A17 (2023)
Super-Mercuries, rocky exoplanets with bulk iron mass fraction of more than 60 per cent, appear to be preferentially hosted by stars with higher iron mass fraction than the Earth. It is unclear whether these iron-rich planets can form in the disc, or
Externí odkaz:
http://arxiv.org/abs/2303.11948
Publikováno v:
A&A 673, A117 (2023)
Context. Our Galaxy is composed of different stellar populations with varying chemical abundances, which are thought to imprint the composition of planet building blocks (PBBs). As such, the properties of stars should affect the properties of planets
Externí odkaz:
http://arxiv.org/abs/2301.05034
Publikováno v:
A&A 659, A6 (2022)
New ALMA observations of protoplanetary disks allow us to probe planet formation in other systems, giving us new constraints on planet formation processes. Meanwhile, studies of our own Solar System rely on constraints derived in a completely differe
Externí odkaz:
http://arxiv.org/abs/2201.03383
Autor:
Adibekyan, V., Santos, N. C., Dorn, C., Sousa, S. G., Hakobyan, A. A., Bitsch, B., Mordasini, Ch., Barros, S. C. C., Mena, E. Delgado, Demangeon, O. D. S., Faria, J. P., Figueira, P., Soares, B. M. T. B., Israelian, G.
Because of their common origin, it was assumed that the composition of planet building blocks should, to a first order, correlate with stellar atmospheric composition, especially for refractory elements. In fact, information on the relative abundance
Externí odkaz:
http://arxiv.org/abs/2112.14512
Publikováno v:
A&A 656, A115 (2021)
Many fundamental physical processes regarding planetary formation in protoplanetary disks are still imperfectly understood, with an elusive phenomenon being turbulence in such disks. Observations are available of planetary systems and of some protopl
Externí odkaz:
http://arxiv.org/abs/2110.13835
Autor:
Dreizler, S., Crossfield, M., Kossakowski, D., Plavchan, P., Jeffers, V., Kemmer, J., Luque, R., Espinoza, N., Pallé, E., Stassun, K., Matthews, E., Cale, B., Caballero, A., Schlecker, M., Lillo-Box, J., Zechmeister, M., Lalitha, S., Reiners, A., Soubkiou, A., Bitsch, B., Osorio, R. Zapatero, Chaturvedi, P., Hatzes, P., Ricker, G., Vanderspek, R., Latham, W., Seager, S., Winn, J., Jenkins, J. M., Aceituno, J., Amado, J., Barkaoui, K., Barbieri, M., Batalha, M., Bauer, F., Benneke, B., Benkhaldoun, Z., Beichman, Berberian, J., Burt, J., Butler, P., Caldwell, A., Chintada, A., Chontos, A., Christiansen, L., Ciardi, D. R., Cifuentes, C., Collins, A., Collins, I., Combs, D., Cortés-Contreras, M., Crane, D., Daylan, T., Dragomir, D., Esparza-Borges, E., Evans, P., Feng, F., Flowers, E., Fukui, A., Fulton, B., Furlan, E., Gaidos, E., Geneser, C., Giacalone, S., Gillon, M., Gonzales, E., Gorjian, V., Hellier, C., Hidalgo, D., Howard, W., Howell, S., Huber, D., Isaacson, H., Jehin, E., Jensen, N., Kaminski, A., Kane, R., Kawauchi, K., Kielkopf, F., Klahr, H., Kosiarek, R., Kreidberg, L., Kürster, Lafarga, M., Livingston, J., Louie, D., Mann, A., Madrigal-Aguado, A., Matson, A., Mocnik, T., Morales, C., Muirhead, S., Murgas, F., Nandakumar, S., Narita, N., Nowak, G., Oshagh, M., Parviainen, H., Passegger, M., Pollacco, D., Pozuelos, J., Quirrenbach, A., Reefe, M., Ribas, I., Robertson, P., Rodríguez-López, C., Rose, E., Roy, A., Schweitzer, A., Schlieder, J., Shectman, S., Tanner, A., Şenavcı, V., Teske, J., Twicken, D., Villasenor, J., Wang, S. X., Weiss, M., Wittrock, J., Yılmaz, M., Zohrabi, F.
Publikováno v:
A&A 644, A127 (2020)
We report the discovery of a Neptune-like planet (LP 714-47 b, P = 4.05204 d, m_b = 30.8 +/- 1.5 M_earth , R_b = 4.7 +/- 0.3 R_earth ) located in the 'hot Neptune desert'. Confirmation of the TESS Object of Interest (TOI 442.01) was achieved with rad
Externí odkaz:
http://arxiv.org/abs/2011.01716
Publikováno v:
A&A 643, A133 (2020)
It is widely known that giant planets have the capacity to open deep gaps in their natal gaseous protoplanetary discs. It is unclear, however, how gas accretion onto growing planets influences the shape and depth of their growing gaps. We performed i
Externí odkaz:
http://arxiv.org/abs/2010.00485
Publikováno v:
A&A 641, A73 (2020)
We study the impact of accretion from protoplanetary discs on stellar evolution of AFG-type stars. We use a simplified disc model computed using the Two-Pop-Py code that contains the growth and drift of dust particles in the protoplanetary disc. It i
Externí odkaz:
http://arxiv.org/abs/2007.01297
Context: Vertically hydrostatic protoplanetary disk models are based on the assumption that the main heating source, stellar irradiation, does not vary much with time. However, it is known that accreting young stars are variable sources of radiation.
Externí odkaz:
http://arxiv.org/abs/1809.02834