Publications (26)
Interpreting molecular hydrogen and atomic oxygen line emission of T Tauri disks with photoevaporative disk-wind models
Ch. Rab, M. Weber, T. Grassi +6
Winds in protoplanetary disks play an important role in their evolution and dispersal. However, what physical process is driving the winds is still unclear (i.e. magnetically vs th…
New Mid-Infrared Imaging Constraints on Companions and Protoplanetary Disks around six Young Stars
D. J. M. Petit dit de la Roche, N. Oberg, M. E. van den Ancker +13
Mid-infrared imaging traces the sub-micron and micron sized dust grains in protoplanetary disks and it offers constraints on the geometrical properties of the disks and potential c…
Interpreting high spatial resolution line observations of planet-forming disks with gaps and rings -- The case of HD 163296
Ch. Rab, I. Kamp, C. Dominik +5
Spatially resolved continuum observations of planet-forming disks show prominent ring and gap structures in their dust distribution. However, the picture from gas observations is m…
Warm dust surface chemistry in protoplanetary disks. Formation of phyllosilicates
W. F. Thi, S. Hocuk, I. Kamp +5
The origin of the reservoirs of water on Earth is debated. The Earth's crust may contain at least three times more water than the oceans. This crust water is found in the form of p…
X-ray radiative transfer in protoplanetary disks - The role of dust and X-ray background fields
Ch. Rab, M. Güdel, P. Woitke +5
The X-ray luminosities of T Tauri stars are about two to four orders of magnitude higher than the luminosity of the contemporary Sun. As these stars are born in clusters, their dis…
Constraining the gas distribution in the PDS 70 disk as a method to assess the effect of planet-disk interactions
B. Portilla-Revelo, I. Kamp, S. Facchini +7
Embedded planets are potentially the cause of substructures like gaps and cavities observed in several protoplanetary disks. Thus, the substructures observed in the continuum and i…
Massive pre-main-sequence stars in M17 -- Modelling hydrogen and dust in MYSO disks
Frank Backs, J. Poorta, Ch. Rab +5
The young massive-star-forming region M17 contains optically visible massive pre-main-sequence stars that are surrounded by circumstellar disks. Such disks are expected to disappea…
Self-consistent modelling of the dust component in protoplanetary and circumplanetary disks: the case of PDS 70
B. Portilla-Revelo, I. Kamp, Ch. Rab +4
Direct observations of young stellar objects are important to test established theories of planet formation. PDS 70 is one of the few cases where robust evidence favours the presen…
Warm dust surface chemistry. H2 and HD formation
W. F. Thi, S. Hocuk, I. Kamp +4
Molecular hydrogen (H2) is the main constituent of the gas in the planet-forming disks that surround many PMS stars. H2 can be incorporated in the atmosphere of the giant planets.…
Dust entrainment in photoevaporative winds: Densities and imaging
R. Franz, B. Ercolano, S. Casassus +5
X-ray- and EUV- (XEUV-) driven photoevaporative winds acting on protoplanetary disks around young T-Tauri stars may crucially impact disk evolution, affecting both gas and dust dis…
Observing the gas component of circumplanetary disks around wide-orbit planet-mass companions in the (sub)mm regime
Ch. Rab, I. Kamp, C. Ginski +6
Several detections of wide-orbit planet-mass/sub-stellar companions around young solar-like stars were reported in the last decade. The origin of those possible planets is still un…
The gas disk: Evolution and chemistry
Ch. Rab, C. Baldovin-Saavedra, O. Dionatos +2
Protoplanetary disks are the birthplaces of planetary systems. The evolution of the star-disk system and the disk chemical composition determines the initial conditions for planet…
Multiwavelength optical properties of compact dust aggregates in protoplanetary disks
M. Min, Ch. Rab, P. Woitke +2
In protoplanetary disks micron-size dust grains coagulate to form larger structures with complex shapes and compositions. The coagulation process changes the absorption and scatter…
High-resolution [OI] line spectral mapping of TW Hya consistent with X-ray driven photoevaporation
Ch. Rab, M. Weber, G. Picogna +2
Theoretical models indicate that photoevaporative and magnetothermal winds play a crucial role in the evolution and dispersal of protoplanetary disks and affect the formation of pl…
Gas chemistry in the dust depleted inner regions of protoplanetary disks. I. Near-IR spectra and overtones
J. Bethlehem, Ch. Rab, I. Kamp +3
The molecular composition inside the dust sublimation zones of protoplanetary disks is mostly unknown but important to understanding terrestrial planet formation. A few molecules h…
The SPHERE view of the Orion star-forming region
P. -G. Valegard, C. Ginski, A. Derkink +17
We present SPHERE/IRDIS H-band data for a sample of 23 stars in the Orion Star forming region observed within the DESTINYS (Disk Evolution Study Through Imaging of Nearby Young Sta…
Disk Evolution Study Through Imaging of Nearby Young Stars (DESTINYS): Scattered light detection of a possible disk wind in RY Tau
P. -G. Valegård, C. Ginski, C. Dominik +14
Disk winds are an important mechanism for accretion and disk evolution around young stars. The accreting intermediate-mass T-Tauri star RY Tau has an active jet and a previously kn…
Dust entrainment in photoevaporative winds: Synthetic observations of transition disks
R. Franz, G. Picogna, B. Ercolano +4
X-ray- and extreme-ultraviolet- (XEUV-) driven photoevaporative winds acting on protoplanetary disks around young T-Tauri stars may strongly impact disk evolution, affecting both g…
Constraining the stellar energetic particle flux in young solar-like stars
Ch. Rab, M. Padovani, M. Güdel +3
Anomalies in the abundance measurements of short lived radionuclides in meteorites indicate that the protosolar nebulae was irradiated by a large number of energetic particles ($E\…
Disk Evolution Study Through Imaging of Nearby Young Stars (DESTINYS): A close low mass companion to ET Cha
C. Ginski, F. Ménard, Ch. Rab +25
To understand the formation of planetary systems, one needs to understand the initial conditions of planet formation, i.e. the young gas-rich planet forming disks. Spatially resolv…
Radiation thermo-chemical models of protoplanetary disks. Grain and polycyclic aromatic hydrocarbon charging
W. F. Thi, G. Lesur, P. Woitke +3
Context. Disks around pre-main-sequence stars evolve over time by turbulent viscous spreading. The main contender to explain the strength of the turbulence is the Magneto-Rotationa…
Photoevaporation of the Jovian circumplanetary disk I. Explaining the orbit of Callisto and the lack of outer regular satellites
N. Oberg, I. Kamp, S. Cazaux +1
Context: The Galilean satellites are thought to have formed from a circumplanetary disk (CPD) surrounding Jupiter. When it reached a critical mass, Jupiter opened an annular gap in…
Stellar energetic particle ionization in protoplanetary disks around T Tauri stars
Ch. Rab, M. Güdel, M. Padovani +4
Anomalies in the abundance measurements of short lived radionuclides in meteorites indicate that the protosolar nebulae was irradiated by a high amount of energetic particles (E$\g…
Thermochemical modelling of brown dwarf discs
A. J. Greenwood, I. Kamp, L. B. F. M. Waters +5
The physical properties of brown dwarf discs, in terms of their shapes and sizes, are still largely unexplored by observations. To what extent brown dwarf discs are similar to scal…
ALMA detects a radial disk wind in DG Tau
M. Guedel, C. Eibensteiner, O. Dionatos +7
Aims: We aim to use the high spatial resolution of the Atacama Large Millimeter/submillimeter Array (ALMA) to map the flow pattern of molecular gas near DG Tau and its disk, a youn…
The chemistry of episodic accretion in embedded objects. 2D radiation thermo-chemical models of the post-burst phase
Ch. Rab, V. Elbakyan, E. Vorobyov +7
Episodic accretion is an important process in the evolution of young stars and their environment. The observed strong luminosity bursts of young stellar objects likely have a long…