Emission line diagnostics for accretion and outflows in young very low-mass stars and brown dwarfs
نویسندگان
چکیده
منابع مشابه
Emission line diagnostics for accretion and outflows in young very low-mass stars and brown dwarfs
We discuss accretion and outflow properties of three very low-mass young stellar objects based on broad-band mid-resolution X-Shooter/VLT spectra. Our targets (FUTauA, 2M1207-39, and Par-Lup3-4) have spectral types between M5 and M8, ages between 1Myr and ∼ 10Myr, and are known to be accreting from previous studies. The final objective of our project is the determination of mass outflow to accr...
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Low-resolution spectra from 3000–9000 Å of young low-mass stars and brown dwarfs were obtained with LRIS on Keck I. The excess UV and optical emission arising in the Balmer and Paschen continua yields mass accretion rates ranging from 2×10 to 10 M⊙ yr . These results are compared with HST/STIS spectra of roughly solar-mass accretors with accretion rates that range from 2× 10 to 5 × 10 M⊙ yr . T...
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ژورنال
عنوان ژورنال: EPJ Web of Conferences
سال: 2014
ISSN: 2100-014X
DOI: 10.1051/epjconf/20136408005