Protoplanetary disks

Session

Protoplanetary disks (chair R. Garcia Lopez)

27 Jun 2018, 09:00

45. Disks ALMA observations and dust evolution (I)

Marco Tazzari

27/06/2018, 09:30

47. Gas and dust connection in protoplanetary disks (I)

Anna Miotello

27/06/2018, 10:00

With the advent of ALMA, complete surveys of protoplanetary disks are being carried out in different star forming regions with the attempt to simultaneously constrain the gas and dust disk masses as well as the gas/dust mass ratio. More specifically, continuum and CO isotopologues observations are used to trace the bulk of the dust and the gas respectively. The main result from such surveys is...

53. ALMA view of protoplanetary disks

Davide Fedele

27/06/2018, 11:00

Talk

Planet formation is one of the most fundamental process in modern astrophysics as it is tightly linked to the origin of life. With more than 3000 planets known so far we are learning that planetary systems are ubiquitous in the Galaxy and their architectures are highly heterogeneous. These findings challenge our understanding of the planet formation mechanism. Protoplanetary disks offer a...

58. Towards the molecular complexity in protoplanetary disks

Cecile Favre (INAF-Osservatorio di Arcetri)

27/06/2018, 11:15

The formation of planets together with that of comets and asteroids occurs within the protoplanetary disk surrounding a Sun-like young star. Consequently, the properties of emerging planets along with their primi-tive atmospheres may be shaped by the chemical composition of the disk.
Nonetheless, one of the most important questions in Astrochemistry and Astrobiology is whether the molecules...

51. Understanding planet formation: looking at «teenage» giant planets (I)

Valentina D'Orazi

27/06/2018, 11:30

Observational constraints on planet formation mechanisms and corresponding timescales can be set through exoplanetary study by using two main approaches. (i) We can investigate relatively old stars hosting giant planets, and then inferring fundamental properties going reversely in time. (ii) On the other hand, a complimentary and much more powerful approach consists in looking at planets...

34. On The Secular Evolution of GG Tau A Circumbinary Disc: A Misaligned Disc Scenario

Aly Hossam (University of Milan)

27/06/2018, 12:00

Talk

The binary system GG Tau A is observed to have a circumbinary disc with a
dust ring located further out than expected from tidal truncation theory.
Given the binary separation, this large cavity can be explained by relaxing
the assumption of a co-planar disc and instead fit the observations with a
mis-aligned circumbinary disc around an eccentric binary with a wider
semi-major axis. I present...

20. Can spirals and axisymmetric structures give us a proxy for the total disc mass? The case of HD135344B

Benedetta Veronesi (Università degli Studi di Milano)

27/06/2018, 12:20

Talk

In recent years, the Atacama Large millimeter/submillimter Array (ALMA) and the Spectro-Polarimetric High-contrast Exoplanet Research (SPHERE) instrument at the VLT have given us high resolution and high sensitivity observations of protoplanetary discs, showing peculiar substructures, such as spirals, gaps and horseshoes. Disc instabilities and planets have been proposed to be responsible for...

44. ALMA (I)

Leonardo Testi

52. Discussion

22. The gas and dust disk around the CQ Tau protostar

Maria Giulia Ubeira Gabellini (INAF)

Talk

The combination of high resolution and sensitivity offered by the Atacama Large Millimeter Array (ALMA) is transforming our understanding of protoplanetary disks, as their bulk gas and dust distributions can be studied independently. I will present resolved ALMA observations of the continuum ($\lambda=1.3$ mm) and CO isotopologues ($^{12}$CO, $^{13}$CO, C$^{18}$O $J=2-1$) line emission from...