Zobrazeno 1 - 10
of 6 208
pro vyhledávání: '"Flock"'
Autor:
Flores-Rivera, Lizxandra, Lambrechts, Michiel, Gavino, Sacha, Lorek, Sebastian, Flock, Mario, Johansen, Anders, Mignone, Andrea
Icy dust particles emerge in star-forming clouds and are subsequently incorporated in protoplanetary disks, where they coagulate into larger pebbles up to mm in size. In the disk midplane, ices are shielded from UV radiation, but moderate levels of d
Externí odkaz:
http://arxiv.org/abs/2412.01698
Autor:
Cecil, Michael, Flock, Mario
Publikováno v:
A&A 692, A171 (2024)
The inner regions of protoplanetary disks are prone to thermal instability (TI), which can significantly impact the thermal and dynamic evolution of planet-forming regions. Observable as episodic accretion outbursts, such periodic disturbances shape
Externí odkaz:
http://arxiv.org/abs/2411.05444
Autor:
Liu, Yao, Roussel, Hélène, Linz, Hendrik, Fang, Min, Wolf, Sebastian, Kirchschlager, Florian, Henning, Thomas, Yang, Haifeng, Du, Fujun, Flock, Mario, Wang, Hongchi
Publikováno v:
A&A 692, A148 (2024)
ALMA surveys have suggested that protoplanetary disks are not massive enough to form the known exoplanet population, under the assumption that the millimeter continuum emission is optically thin. In this work, we investigate how the mass determinatio
Externí odkaz:
http://arxiv.org/abs/2411.00277
Autor:
Birney, M., Whelan, E. T., Dougados, C., Pascucci, I., Murphy, A., Flores-Rivera, L., Flock, M., Kirwan, A.
Publikováno v:
A&A 692, L5 (2024)
The first images of the jet and low velocity component (LVC) from the strongly accreting classical T Tauri star RU Lupi are presented. Adaptive optics assisted spectro-imaging of forbidden emission lines was used. The main aim of the observations was
Externí odkaz:
http://arxiv.org/abs/2409.19112
Autor:
Ziampras, Alexandros, Sudarshan, Prakruti, Dullemond, Cornelis P., Flock, Mario, Berta, Vittoria, Nelson, Richard P., Mignone, Andrea
Protoplanetary disks exhibit a rich variety of substructure in millimeter continuum emission, often attributed to unseen planets. As these planets carve gaps in the gas, dust particles can accumulate in the resulting pressure bumps, forming bright fe
Externí odkaz:
http://arxiv.org/abs/2409.15420
We consider Bayesian inference for image deblurring with total variation (TV) prior. Since the posterior is analytically intractable, we resort to Markov chain Monte Carlo (MCMC) methods. However, since most MCMC methods significantly deteriorate in
Externí odkaz:
http://arxiv.org/abs/2409.09810
We focus on Bayesian inverse problems with Gaussian likelihood, linear forward model, and priors that can be formulated as a Gaussian mixture. Such a mixture is expressed as an integral of Gaussian density functions weighted by a mixing density over
Externí odkaz:
http://arxiv.org/abs/2408.16594
Publikováno v:
A&A 689, A104 (2024)
We present Atacama Large Millimeter Array (ALMA) observations of TW Hya at 0.65 mm with 0.5 arcsecond angular resolution, together with high angular resolution archival observations at 0.87 mm, 1.3 mm, 2.1 mm and 3.1 mm. We constrain the outer disk e
Externí odkaz:
http://arxiv.org/abs/2407.07649
Protoplanetary disks, the birthplace of planets, are expected to be gravitationally unstable in their early phase of evolution. IM Lup, a well-known T-Tauri star, is surrounded by a protoplanetary disk with spiral arms likely caused by gravitational
Externí odkaz:
http://arxiv.org/abs/2406.07427
Autor:
Bhandare, Asmita, Commerçon, Benoît, Laibe, Guillaume, Flock, Mario, Kuiper, Rolf, Henning, Thomas, Mignone, Andrea, Marleau, Gabriel-Dominique
Publikováno v:
A&A 687, A158 (2024)
Signposts of early planet formation are ubiquitous in substructured young discs. Dense, hot and high-pressure regions formed during gravitational collapse process, integral to star formation, facilitate dynamical mixing of dust within the protostella
Externí odkaz:
http://arxiv.org/abs/2404.09257