Protoplanetary disks

Session

Formation of protoplanets (chair D. Fedele)

28 Jun 2018, 09:00

15. The Extremely Large Telescope (I)

Paolo Padovani (ESO)

28/06/2018, 09:00

Talk

I will present an overview of the current status of the Extremely Large Telescope
(E-ELT) project, concentrating on recent developments. I will then discuss the
ELT instruments and then briefly address the proto-planetary disk science topics,
which these instruments will address.

46. The complex interplay between gas and dust in protoplanetary disks (I)

Stefano Facchini

28/06/2018, 09:30

The high sensitivity and angular resolution of ALMA and optical and NIR imagers are providing new insights on the typical properties of protoplanetary disks. A plethora of substructures are currently being observed, ranging from rings and gaps to spirals and strong azimuthal asymmetries. Most of these features have been characterized in continuum emission, from optical to cm wavelengths, and...

30. Search and characterization of young planets with GAPS

Serena Benatti (Istituto Nazionale di Astrofisica (INAF))

28/06/2018, 10:00

Talk

The “GAPS” (Global Architecture of Planetary Systems) project gathers a large part of the Italian community working on exoplanets. In the past 5 years our radial velocity survey with HARPS-N at TNG was focused to the search and characterization of planetary systems around stars with different characteristics (M dwarf, stars with already known planets, metal-poor stars, members of open...

16. Disk-planet interaction: theory confronts observations (I)

Giovanni Dipierro (University of Leicester)

28/06/2018, 10:20

Talk

Recent spectacular high resolution observations of gaps and ring-like structures in nearby dusty protoplanetary disks have revived interest in studying gap-opening mechanisms. Among all the models proposed to explain the rings and gaps observed in these systems, the planet hypothesis is the most important to test, in order to advance our fundamental understanding of planet formation and...

19. Eccentricity evolution during planet-disc interaction

Enrico Ragusa (Università degli Studi di Milano)

28/06/2018, 11:20

Talk

During the process of planet formation, the planet-discs interactions might excite (or damp) the orbital eccentricity of the planet. In this talk, I will present two long (t ~ 3x10^5 orbits) numerical simulations: (a) one (with a relatively light disc, M_d/M_p=0.2) where the eccentricity initially stalls before growing at later times and (b) one (with a more massive disc, M_d/M_p=0.65) with...

18. Exploring the role of planetesimals stirred by forming giant planets in shaping the characteristics of protoplanetary disks

Diego Turrini (Istituto Nazionale di Astrofisica (INAF))

28/06/2018, 11:40

Talk

The dust population in circumstellar disks is expected to steadily decrease with age due to its growth from µm-sized particles to planetesimals and planets. Using HD 163296’s circumstellar disk as a test-bench, we show that the formation of giant planets globally dynamically excites the planetesimal population embedded in disks. This dynamical excitation leads to a marked increase in...

21. Non-spherical dust dynamics in protoplanetary disks: the effects of particle nonsphericity on the evolution timescales.

Stavro Ivanovski (Istituto Nazionale di Astrofisica (INAF))

28/06/2018, 12:00

Talk

Recent high-resolution ALMA observations of protoplanetary disks (e.g. Isella et al. 2016, PRL, 117; ALMA Partnership et al. 2015, ApJ Lett. 808:L3,10pp) triggered interest in studying solid bodies in discs at different scales, ranging from small sub-micron grains up to solid bodies of sizes of hundreds of meters, for which the dynamical evolution is governed by the interaction with the gas in...

28. Evolution of early Protoplanetary systems embedded in gaseous disks under perturbation of passing-by stars.

Luis Diego Pinto

28/06/2018, 12:20

Talk

The recent detection of planetary systems around stars embedded in Open Clusters opened new perspectives on the study of the primordial evolution of gas matter and on the subsequent formation of planets. In such complex environments, the disks may interact with the other cluster field-stars, and follow a different evolution with respect to the well-known simpler case of isolated systems. For...