64 citations · 646 across the 38 of their papers we have counts for
41 papers
The environments forming stellar and planetary systems
Michael Kuffmeier, Jaime E. Pineda, Peter Schilke +29
How does a star's birth environment set the mass, angular momentum and chemical complexity delivered to its planet-forming disk, and thereby whether it builds planets, brown dwarfs…
Planet forming disk populations and their connection to the environment
Thomas J. Haworth, Giovanni Rosotti, Carlo Manara +35
Existing sub-mm observatories such as ALMA have provided statistics on the planet-forming mass reservoirs within circumstellar disks around stars in stellar clusters out to distanc…
SPICY 30021: an embedded bona fide FUor with a mid-infrared precursor
Zhen Guo, Calum Morris, Vitor Fermiano +37
Unstable mass accretion in young stellar objects (YSOs) often leads to observable outbursts, which play a key role in stellar mass assembly during pre-main-sequence evolution. The…
Hot water emission during an outburst in a classical T Tauri star
Zhen Guo, Javier Osses, Vitor Fermiano +34
In this paper, we present observations of an eruptive young star in the Rosette Nebula, identified by the Gaia Science Alerts system using Gaia time series data. We aim to investig…
The CepA disk-outflow system at <=0.2'' or <=100au resolution
H. Beuther, C. Gieser, V. Aberham +21
Context: Although there has been significant progress, the physical properties and potential fragmentation of accretion disks around high-mass protostars remain poorly constrained.…
From Fragments to Flares: Migration, Tidal Disruption, and Observable Bursts in Massive Protostellar Disks
Vardan Elbakyan, Rolf Kuiper, André Oliva +4
We investigate how resolving the inner few astronomical units of a massive protostellar disk affects the migration, disruption, and accretion signatures of an inward-moving fragmen…
Gaia24ccy: An outburst followed the footsteps of its predecessor
Koshvendra Singh, Joe P. Ninan, Zhen Guo +25
Accretion-driven outbursts in young stellar objects remain poorly understood, largely limited by a statistically small sample of closely followed-up events. This underscores the im…
The role of detailed gas and dust opacities in shaping the evolution of the inner disc edge subject to episodic accretion
Michael Cecil, Mario Flock, Mykola G. Malygin +4
We investigate the effects of different dust and gas opacity descriptions on the structure and evolution of the inner regions of protoplanetary discs. The influence on the episodic…
Observational Signatures of Planetary Tidal Disruption Events Around Solar-Mass Stars
Matías Montesinos, Sergei Nayakshin, Vardan Elbakyan +4
The tidal disruption of planets by their host stars represents a growing area of interest in transient astronomy, offering insights into the final stages of planetary system evolut…
On the accuracy of mass and size measurements of young protoplanetary disks
Eduard I. Vorobyov, Aleksandr Skliarevskii, Vardan Elbakyan +2
Knowing the masses and sizes of protoplanetary disks is of fundamental importance for the contemporary theories of planet formation. However, their measurements are associated with…
VVV-WIT-13: an eruptive young star with cool molecular features
Zhen Guo, Philip Lucas, Sergey N. Yurchenko +27
Here we investigate an infrared eruptive source, identified from the decade-long VISTA Variables in the Via Lactea survey (VVV). We named this target after a group of variable sour…
Detection of a septuple stellar system in formation via disk fragmentation
Shanghuo Li, Henrik Beuther, André Oliva +15
Stellar multiple systems play a pivotal role in cluster dynamics and stellar evolution, leading to intense astronomical phenomena like X-ray binaries, gamma-ray bursts, Type Ia sup…
Episodic accretion in high-mass star formation: An analysis of thermal instability for axially symmetric disks
Vardan Elbakyan, Dennis Wehner, Rolf Kuiper +3
High-mass young stellar objects exhibit episodic accretion bursts similar to their low-mass counterparts. Understanding these outbursts is crucial for elucidating massive star form…
Dust enrichment and growth in the earliest stages of protoplanetary disk formation
E. I. Vorobyov, V. G. Elbakyan, A. Skliarevskii +2
Aims. We numerically investigated dust enrichment and growth during the initial stages of protoplanetary disk formation. A particular objective was to determine the effects of vari…
The Role of Thermal Instability in Accretion Outbursts in High-Mass Stars
Vardan G. Elbakyan, Sergei Nayakshin, Alessio Caratti o Garatti +2
High-mass young stellar objects (HMYSOs) can exhibit episodic bursts of accretion, accompanied by intense outflows and luminosity variations. Thermal Instability (TI) due to Hydrog…
Dust growth and pebble formation in the initial stages of protoplanetary disk evolution
Eduard Vorobyov, Igor Kulikov, Vardan Elbakyan +2
Aims. The initial stages of planet formation may start concurrently with the formation of a gas-dust protoplanetary disk. This makes the study of the earliest stages of protoplanet…
On the origin of accretion bursts in FUORs
Sergei Nayakshin, Vardan Elbakyan
Accretion luminosity of young star FU Ori increased from undetectable levels to hundreds of Solar luminosities in 1937 and remains nearly as high at the present time. In a recent p…
Distinguishing Magnetized Disc Winds from Turbulent Viscosity through Substructure Morphology in Planet-forming Discs
Yinhao Wu, Yi-Xian Chen, Haochang Jiang +5
The traditional paradigm of viscosity-dominated evolution of protoplanetary discs has been recently challenged by magnetized disc winds. However, distinguishing wind-driven and tur…
Extreme evaporation of planets in hot thermally unstable protoplanetary discs: the case of FU Ori
Sergei Nayakshin, James E. Owen, Vardan Elbakyan
Disc accretion rate onto low mass protostar FU Ori suddenly increased hundreds of times 85 years ago and remains elevated to this day. We show that the sum of historic and recent o…
Formation of pebbles in (gravito-)viscous protoplanetary disks with various turbulent strengths
Eduard I. Vorobyov, Vardan G. Elbakyan, Anders Johansen +3
Aims. Dust plays a crucial role in the evolution of protoplanetary disks. We study the dynamics and growth of initially sub- dust particles in self-gravitating young protoplane…
Episodic accretion and mergers during growth of massive protostars
Vardan G. Elbakyan, Sergei Nayakshin, Dominique M. -A. Meyer +1
3D simulations of high mass young stellar object (HMYSO) growth show that their circumstellar discs fragment onto multiple self-gravitating objects. Accretion of these by HMYSO may…
The burst mode of accretion in massive star formation with stellar inertia
D. M. -A. Meyer, E. I. Vorobyov, V. G. Elbakyan +4
The burst mode of accretion in massive star formation is a scenario linking the initial gravitational collapse of parent pre-stellar cores to the properties of their gravitationall…
Gap opening by planets in discs with magnetised winds
Vardan Elbakyan, Yinhao Wu, Sergei Nayakshin +1
Planets open deep gaps in protoplanetary discs when their mass exceeds a gap opening mass, . We use one- and two-dimensional simulations to study planet gap opening in…
ALMA constraints on assembly of Core Accretion planets
Sergei Nayakshin, Vardan Elbakyan, Giovanni Rosotti
Resolved dust continuum and CO line ALMA imaging, and in some cases detection of H emission, hint that young massive planets are abundant at wide separations in protoplanetary d…