ON THE ROLE OF DISKS IN THE FORMATION OF STELLAR SYSTEMS: A NUMERICAL PARAMETER STUDY OF RAPID ACCRETION

Kratter, Kaitlin M; Matzner, Christopher D; Krumholz, Mark R; Klein, Richard I

doi:10.1088/0004-637X/708/2/1585

Title: ON THE ROLE OF DISKS IN THE FORMATION OF STELLAR SYSTEMS: A NUMERICAL PARAMETER STUDY OF RAPID ACCRETION

Journal Article · Sun Jan 10 00:00:00 EST 2010 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/708/2/1585· OSTI ID:21392393

Kratter, Kaitlin M; Matzner, Christopher D ^[1]; Krumholz, Mark R ^[2]; Klein, Richard I ^[3]

Department of Astronomy and Astrophysics, 50 St. George Street, University of Toronto, Toronto, Ontario M5R 3H4 (Canada)
Department of Astronomy, 201 Interdisciplinary Sciences Building, University of California, Santa Cruz, CA 95064 (United States)
Department of Astronomy, University of California, Berkeley 601 Campbell Hall, Berkeley, CA 94720-3411 (United States)

We study rapidly accreting, gravitationally unstable disks with a series of idealized global, numerical experiments using the code ORION. Our numerical parameter study focuses on protostellar disks, showing that one can predict disk behavior and the multiplicity of the accreting star system as a function of two dimensionless parameters which compare the infall rate to the disk sound speed and orbital period. Although gravitational instabilities become strong, we find that fragmentation into binary or multiple systems occurs only when material falls in several times more rapidly than the canonical isothermal limit. The disk-to-star accretion rate is proportional to the infall rate and governed by gravitational torques generated by low-m spiral modes. We also confirm the existence of a maximum stable disk mass: disks that exceed approx50% of the total system mass are subject to fragmentation and the subsequent formation of binary companions.

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OSTI ID:: 21392393

Journal Information:: Astrophysical Journal, Vol. 708, Issue 2; Other Information: DOI: 10.1088/0004-637X/708/2/1585; ISSN 0004-637X

Country of Publication:: United States

Language:: English

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A Complete Spectroscopic Survey of the Milky Way Satellite Segue 1: The Darkest Galaxy Simon, Joshua D.; Geha, Marla; Minor, Quinn E. arXiv https://doi.org/10.48550/arxiv.1007.4198	text	January 2010
Challenges in Forming Planets by Gravitational Instability: Disk Irradiation and Clump Migration, Accretion & Tidal Destructio Zhu, Zhaohuan; Hartmann, Lee; Nelson, Richard P. arXiv https://doi.org/10.48550/arxiv.1111.6943	text	January 2011
A Search for Hierarchical Triples using Kepler Eclipse Timing Gies, D. R.; Williams, S. J.; Matson, R. A. arXiv https://doi.org/10.48550/arxiv.1204.0030	text	January 2012
Binary interaction dominates the evolution of massive stars Sana, H.; de Mink, S. E.; de Koter, A. arXiv https://doi.org/10.48550/arxiv.1207.6397	text	January 2012
Evolution of Protostellar Outflow around Low-mass Protostar Machida, Masahiro N.; Hosokawa, Takashi arXiv https://doi.org/10.48550/arxiv.1302.4176	text	January 2013
Orbital migration of giant planets induced by gravitationally unstable gaps: the effect of planet mass Cloutier, Ryan; Lin, Min-Kai arXiv https://doi.org/10.48550/arxiv.1306.2514	text	January 2013
Southern Massive Stars at High Angular Resolution: Observational Campaign and Companion Detection Sana, H.; Bouquin, J. -B. Le; Lacour, S. arXiv https://doi.org/10.48550/arxiv.1409.6304	text	January 2014
The VLA Nascent Disk And Multiplicity (VANDAM) Survey of Perseus Protostars. Resolving the Sub-Arcsecond Binary System in NGC 1333 IRAS2A Tobin, John J.; Dunham, Michael M.; Looney, Leslie W. arXiv https://doi.org/10.48550/arxiv.1410.8134	text	January 2014
A Sub-arcsecond Survey Toward Class 0 Protostars in Perseus: Searching for Signatures of Protostellar Disks Tobin, John J.; Looney, Leslie W.; Wilner, David J. arXiv https://doi.org/10.48550/arxiv.1503.05189	text	January 2015
A Dynamical Model for the Formation of Gas Rings and Episodic Starbursts Near Galactic Centres Krumholz, Mark R.; Kruijssen, J. M. Diederik arXiv https://doi.org/10.48550/arxiv.1505.07111	text	January 2015
The Mass-Metallicity Relation for Giant Planets Thorngren, Daniel P.; Fortney, Jonathan J.; Murray-Clay, Ruth A. arXiv https://doi.org/10.48550/arxiv.1511.07854	text	January 2015
Protostellar Disk Formation Enabled by Removal of Small Dust Grains Zhao, Bo; Caselli, Paola; Li, Zhi-Yun arXiv https://doi.org/10.48550/arxiv.1602.02729	text	January 2016
The Turbulent Origin of Outflow and Spin Misalignment in Multiple Star Systems Offner, Stella S. R.; Dunham, Michael M.; Lee, Katherine I. arXiv https://doi.org/10.48550/arxiv.1606.08445	text	January 2016
Decoupling of Magnetic Fields in Collapsing Protostellar Envelopes and Disk Formation and Fragmentation Zhao, Bo; Caselli, Paola; Li, Zhi-Yun arXiv https://doi.org/10.48550/arxiv.1706.06504	text	January 2017
Forming spectroscopic massive proto-binaries by disk fragmentation Meyer, D. M. -A.; Kuiper, R.; Kley, W. arXiv https://doi.org/10.48550/arxiv.1710.01162	text	January 2017
Discovery of a sub-Keplerian disk with jet around a 20Msun young star. ALMA observations of G023.01-00.41 Sanna, A.; Koelligan, A.; Moscadelli, L. arXiv https://doi.org/10.48550/arxiv.1805.09842	text	January 2018
Spiral Arms in Disks: Planets or Gravitational Instability? Dong, Ruobing; Najita, Joan R.; Brittain, Sean arXiv https://doi.org/10.48550/arxiv.1806.05183	text	January 2018
Hydrodynamics of circumbinary accretion: Angular momentum transfer and binary orbital evolution Muñoz, Diego J.; Miranda, Ryan; Lai, Dong arXiv https://doi.org/10.48550/arxiv.1810.04676	text	January 2018
The statistical properties of stars and their dependence on metallicity Bate, Matthew R. arXiv https://doi.org/10.48550/arxiv.1901.03713	text	January 2019
Dynamics of a Massive Binary at Birth Zhang, Yichen; Tan, Jonathan C.; Tanaka, Kei E. I. arXiv https://doi.org/10.48550/arxiv.1903.07532	text	January 2019
New Constraints From Dust Lines On The Surface Densities Of Protoplanetary Disks Powell, Diana; Murray-Clay, Ruth; Pérez, Laura M. arXiv https://doi.org/10.48550/arxiv.1905.03252	text	January 2019
Disk Kinematics and Stability in High-Mass Star Formation: Linking Simulations and Observations Ahmadi, Aida; Kuiper, Rolf; Beuther, Henrik arXiv https://doi.org/10.48550/arxiv.1909.04051	text	January 2019
The Formation and Evolution of Wide-Orbit Stellar Multiples In Magnetized Clouds Lee, Aaron T.; Offner, Stella S. R.; Kratter, Kaitlin M. arXiv https://doi.org/10.48550/arxiv.1911.07863	text	January 2019
Planet formation around M dwarfs via disc instability: Fragmentation conditions and protoplanet properties Mercer, Anthony; Stamatellos, Dimitris arXiv https://doi.org/10.48550/arxiv.2001.10062	text	January 2020

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