Zobrazeno 1 - 10
of 256
pro vyhledávání: '"Rowther, A."'
Autor:
Rowther, Sahl, Price, Daniel J., Pinte, Christophe, Nealon, Rebecca, Meru, Farzana, Alexander, Richard
Irradiation from the central star controls the temperature structure in protoplanetary discs. Yet simulations of gravitational instability typically use models of stellar irradiation with varying complexity, or ignore it altogether, assuming heat gen
Externí odkaz:
http://arxiv.org/abs/2409.10765
HD 142527 A is a young and massive Herbig Ae/Be star surrounded by a highly structured disc. The disc shows numerous morphological structures, such as spiral arms, a horseshoe region of dust emission, a set of shadows cast by an inner disc on the out
Externí odkaz:
http://arxiv.org/abs/2402.03595
Autor:
Rowther, Sahl, Nealon, Rebecca, Meru, Farzana, Wurster, James, Aly, Hossam, Alexander, Richard, Rice, Ken, Booth, Richard A.
We carry out three dimensional smoothed particle hydrodynamics simulations to study the role of gravitational and drag forces on the concentration of large dust grains (St > 1) in the spiral arms of gravitationally unstable protoplanetary discs, and
Externí odkaz:
http://arxiv.org/abs/2401.09380
We conduct gas and dust hydrodynamical simulations of protoplanetary discs with one and two embedded planets to determine the impact that a second planet located further out in the disc has on the potential for subsequent planet formation in the regi
Externí odkaz:
http://arxiv.org/abs/2310.01488
We carry out three dimensional smoothed particle hydrodynamics simulations to study the impact of planet-disc interactions on a gravitationally unstable protoplanetary disc. We find that the impact of a planet on the disc's evolution can be described
Externí odkaz:
http://arxiv.org/abs/2210.17454
Autor:
Maryam, Hadia, Liaqat, Rakhshanda, Rowther, Armaan A, Atiq, Maria, Nazir, Huma, Malik, Abid, Rahman, Atif, Surkan, Pamela J *, Atif, Najia *
Publikováno v:
In Midwifery October 2024 137
We perform 3D SPH simulations of warped, non-coplanar gravitationally unstable discs to show that as the warp propagates through the self-gravitating disc, it heats up the disc rendering it gravitationally stable. Thus losing their spiral structure a
Externí odkaz:
http://arxiv.org/abs/2110.06227
Autor:
Rajpaul, V. M., Buchhave, L. A., Lacedelli, G., Rice, K., Mortier, A., Malavolta, L., Aigrain, S., Borsato, L., Mayo, A. W., Charbonneau, D., Damasso, M., Dumusque, X., Ghedina, A., Latham, D. W., López-Morales, M., Magazzù, A., Micela, G., Molinari, E., Pepe, F., Piotto, G., Poretti, E., Rowther, S., Sozzetti, A., Udry, S., Watson, C. A.
To date, only 18 exoplanets with radial velocity (RV) semi-amplitudes $<2$ m/s have had their masses directly constrained. The biggest obstacle to RV detection of such exoplanets is variability intrinsic to stars themselves, e.g. nuisance signals ari
Externí odkaz:
http://arxiv.org/abs/2107.13900
We carry out three dimensional SPH simulations to show that a migrating giant planet strongly suppresses the spiral structure in self-gravitating discs. We present mock ALMA continuum observations which show that in the absence of a planet, spiral ar
Externí odkaz:
http://arxiv.org/abs/2011.04683
Autor:
Rowther, Sahl, Meru, Farzana
We carry out three-dimensional SPH simulations to study whether planets can survive in self-gravitating protoplanetary discs. The discs modelled here use a cooling prescription that mimics a real disc which is only gravitationally unstable in the out
Externí odkaz:
http://arxiv.org/abs/2006.03077