Chemical tracers of episodic accretion in low-mass protostars

2015/03/17 by Ruud Visser, Edwin A. Bergin, Jes K. Jorgensen +1 · 69 citations
Chemistry · Physics and Astronomy · #Accretion (finance) #Accretion disc #Astro and Planetary Science #Astrophysics and Star Formation Studies #Chemical composition #Circumstellar envelope #Envelope (radar) #Fullerene Chemistry and Applications #Protostar #Spectroscopy #TRACER #astro-ph.SR

paper · pdf · doi:10.1051/0004-6361/201425365

published in Astronomy and Astrophysics 577, A102 (EDP Sciences) · Accepted by A&A; 12 pages, 7 figures

arxiv created 2015/03/17 · openalex publication_date 2015/03/25 · arxiv updated 2015/05/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

Aims. Accretion rates in low-mass protostars can be highly variable in time. Each accretion burst is accompanied by a temporary increase in luminosity, heating up the circumstellar envelope and altering the chemical composition of the gas and dust. This paper aims to study such chemical effects and discusses the feasibility of using molecular spectroscopy as a tracer of episodic accretion rates and timescales.

Citations

• Episodic formation of cometary material in the outburst of a young Sun-like star
• CHEMICAL EVOLUTION IN VeLLOs
• The Origin of Episodic Accretion Bursts in the Early Stages of Star Formation
• The effect of episodic accretion on the phase transition of CO and CO2in low-mass star formation
• CONTINUUM VARIABILITY OF DEEPLY EMBEDDED PROTOSTARS AS A PROBE OF ENVELOPE STRUCTURE
• The Environment and Nature of the Class I Protostar Elias 29: Molecular Gas Observations and the Location of Ices
• Envelope Structure of Deeply Embedded Young Stellar Objects in the Serpens Molecular Cloud
• Imaging chemical differentiation around the low-mass protostarL483-mm
• X-ray emission from an FU Orionis star in early outburst: HBC 722
• An atomic and molecular database for analysis of submillimetre line observations

Cited by

• JWST's sharper view of EX Lup: cold water from ice sublimation during accretion outbursts
• The chemistry of episodic accretion in embedded objects
• Chronology of Episodic Accretion in Protostars—An ALMA Survey of the CO and H2O Snowlines