60 citations · 262 across the 17 of their papers we have counts for
17 papers
The protostar FU Orionis may not be bursting: dramatic accretion suppression in embedded young eccentric binaries
Rajika L. Kuruwita
In 1936, the protostar FU Orionis began to brighten. Two years later, it was 100 times brighter and has not dimmed since. This object defined the class of FUor-type accretion burst…
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…
Star Formation
Rajika Kuruwita, Łukasz Tychoniec, Christoph Federrath
In this chapter, we will cover how stars form from the stellar nurseries that are giant molecular clouds. We will first review the physical processes that compete to regulate star…
Orbital Architectures of Planet-Hosting Binaries III. Testing Mutual Inclinations of Stellar and Planetary Orbits in Triple-Star Systems
Elise L. Evans, Trent J. Dupuy, Kendall Sullivan +7
Transiting planets in multiple-star systems, especially high-order multiples, make up a small fraction of the known planet population but provide unique opportunities to study the…
Protostellar spin-up and fast rotator formation through binary star formation
Rajika L. Kuruwita, Christoph Federrath, Marina Kounkel
(Edited) Many fast rotator stars (rotation periods of < 2 days) are found in unresolved binaries with separations of tens of au. This correlation leads to the question of whether t…
Observations of high-order multiplicity in a high-mass stellar protocluster
Shanghuo Li, Patricio Sanhueza, Henrik Beuther +13
The dominant mechanism forming multiple stellar systems in the high-mass regime (M 8 ) remained unknown because direct imaging of multiple protostellar s…
Simulated analogues II: a new methodology for non-parametric matching of models to observations
Rami Al-Belmpeisi, Vito Tuhtan, Mikkel Bregning Christensen +2
Star formation is a multi-scale problem, and only global simulations that account for the connection from the molecular cloud scale gas flow to the accreting protostar can reflect…
Simulated Analogues I: apparent and physical evolution of young binary protostellar systems
Vito Tuhtan, Rami Al-Belmpeisi, Mikkel Bregning Christensen +2
Protostellar binaries harbour complex environment morphologies. Observations represent a snapshot in time, and projection and optical depth effects impair our ability to interpret…
The contribution of binary star formation via core-fragmentation on protostellar multiplicity
R. Kuruwita, T. Haugbølle
Observations of young multiple star systems find a bimodal distribution in companion frequency and separation. The origin of these peaks has often been attributed to binary formati…
The dependence of episodic accretion on eccentricity during the formation of binary stars
R. Kuruwita, C. Federrath, T. Haugbølle
Aims: Our goal is to investigate how the strength of episodic accretion bursts depends on eccentricity. Methods: We investigate the binary trigger hypothesis in longer-period (>20y…
The role of initial magnetic field structure in the launching of protostellar jets
Isabella A. Gerrard, Christoph Federrath, Rajika Kuruwita
Magnetic fields are known to play a crucial role in the star formation process, particularly in the formation of jets and outflows from protostellar discs. The magnetic field struc…
The role of turbulence during the formation of circumbinary discs
Rajika L. Kuruwita, Christoph Federrath
Most stars form in binaries and the evolution of their discs remains poorly understood. To shed light on this subject, we carry out 3D ideal MHD simulations with the AMR code FLASH…
Multiplicity of disc-bearing stars in Upper Scorpius and Upper Centaurus-Lupus
Rajika L. Kuruwita, Michael Ireland, Aaron Rizzuto +2
We present observations of disc-bearing stars in Upper Scorpius (US) and Upper Centaurus-Lupus (UCL) with moderate resolution spectroscopy in order to determine the influence of mu…
Binary Star Formation and the Outflows from their Discs
Rajika Kuruwita, Christoph Federrath, Michael Ireland
We carry out magnetohydrodynamical simulations with FLASH of the formation of a single, a tight binary (2.5 AU) and a wide binary star (45 AU). We study the outflows…
The ANU WiFeS SuperNovA Program (AWSNAP)
Michael J. Childress, Brad E. Tucker, Fang Yuan +24
This paper presents the first major data release and survey description for the ANU WiFeS SuperNovA Program (AWSNAP). AWSNAP is an ongoing supernova spectroscopy campaign utilising…
Considerations on the Role of Fall-Back Discs in the Final Stages of the Common Envelope Binary Interaction
Rajika L. Kuruwita, Jan Staff, Orsola De Marco
The common envelope interaction is thought to be the gateway to all evolved compact binaries and mergers. Hydrodynamic simulations of the common envelope interaction between giant…
Testing the Binary Trigger Hypothesis in FUors
Joel D. Green, Adam L. Kraus, Aaron C. Rizzuto +4
We present observations of three FU Orionis objects (hereafter, FUors) with nonredundant aperture-mask interferometry (NRM) at 1.59 um and 2.12 um that probe for binary companions…