Angular momentum evolution of young low-mass stars and brown dwarfs: observations and theory

Abstract

This chapter aims at providing the most complete review of both the emerging concepts and the latest observational results regarding the angular momentum evolution of young low-mass stars and brown dwarfs. In the time since Protostars & Planets V, there have been major developments in the availability of rotation period measurements at multiple ages and in different star-forming environments that are essential for testing theory. In parallel, substantial theoretical developments have been carried out in the last few years, including the physics of the star-disk interaction, numerical simulations of stellar winds, and the investigation of angular momentum transport processes in stellar interiors. This chapter reviews both the recent observational and theoretical advances that prompted the development of renewed angular momentum evolution models for cool stars and brown dwarfs. While the main observational trends of the rotational history of low mass objects seem to be accounted for by these new models, a number of critical open issues remain that are outlined in this review.

22 pages, 8 figures, accepted for publication in Protostars & Planets VI, 2014, University of Arizona Press, eds. H. Beuther, R. Klessen, K. Dullemond, Th. Henning

Cited by in corpus (36)

• Stellar magnetism: empirical trends with age and rotation
• Testing the recovery of stellar rotation signals from Kepler light curves using a blind hare-and-hounds exercise
• Resolved images of a protostellar outflow launched by an extended disk wind
• Disk-Driven Rotating Bipolar Outflow in Orion Source I
• The Role of Magnetic Fields in Protostellar Outflows and Star Formation
• Spitzer Variability Properties of Low-Gravity L Dwarfs
• The magnetic propeller accretion regime of LkCa 15
• NGTS clusters survey. I. Rotation in the young benchmark open cluster Blanco 1
• The Rotation Period and Magnetic Field of the T Dwarf 2MASSI J1047539+212423 Measured From Periodic Radio Bursts
• The young Sun's XUV-activity as a constraint for lower CO${}_2$-limits in the Earth's Archean atmosphere
• Accretion discs as regulators of stellar angular momentum evolution in the ONC and Taurus-Auriga
• On the Origin of the Bimodal Rotational Velocity Distribution in Stellar Clusters: Rotation on the Pre-Main Sequence
• The IGRINS YSO Survey I. Stellar parameters of pre-main sequence stars in Taurus-Auriga
• Stellar rotational periods in the planet hosting open cluster Praesepe
• The influence of the environment on the spin evolution of low-mass stars. I. External photoevaporation of circumstellar disks
• Breaking the centrifugal barrier to giant planet contraction by magnetic disc braking
• TOI-216: Resonant Constraints on Planet Migration
• Stellar Oblateness versus Distant Giants in Exciting Kepler Planet Mutual Inclinations
• On the origin of magnetic fields in stars II: The effect of numerical resolution
• Hydrogen Emission from Accretion and Outflow in T Tauri Stars
• Planetesimals Around Stars with TESS (PAST): I. Transient Dimming of a Binary Solar Analog at the End of the Planet Accretion Era
• The UV Perspective of Low-Mass Star Formation
• A survey for variable young stars with small telescopes: II -- Mapping a protoplanetary disk with stable structures at 0.15 AU
• Near Mean Motion Resonance of Terrestrial Planet Pair Induced by Giant Planet: Application to Kepler-68 System
• Radio Emission from Ultra-Cool Dwarfs
• A survey for variable young stars with small telescopes: IV -- Rotation Periods of YSOs in IC5070
• The partial ionisation zone of heavy elements in F-stars: a study on how it correlates with rotation
• NGTS clusters survey $-$ V: Rotation in the Orion Star-forming Complex
• The Primordial Solar wind as a Sculptor of Terrestrial Planet Formation
• Stellar Coronal and Wind Models: Impact on Exoplanets
• Evidence for disc regulation in the lowest-mass stars of the young stellar cluster NGC 2264
• Distinct Rotational Evolution of Giant Planets and Brown Dwarf Companions
• Bifurcated Evolutionary Pathways in Multi-planet Systems Driven by Misaligned Protoplanetary Disks
• The impact of stellar rotations and binaries on the shape of upper main sequence near turn off in open cluster NGC\,6067
• Time series photometry and multi-wavelength characterisation of the young stellar cluster Mon R2
• Planetary Obliquity Excitation Through Pre-Main Sequence Stellar Evolution