SIMBAD references

2015MNRAS.453..976F - Mon. Not. R. Astron. Soc., 453, 976-1001 (2015/October-2)

A spectroscopic survey of Herbig Ae/Be stars with X-shooter - I. Stellar parameters and accretion rates.


Abstract (from CDS):

Herbig Ae/Be stars (HAeBes) span a key mass range that links low- and high-mass stars, and thus provide an ideal window from which to explore their formation. This paper presents Very Large Telescope/X-shooter spectra of 91 HAeBes, the largest spectroscopic study of HAeBe accretion to date. A homogeneous approach to determining stellar parameters is undertaken for the majority of the sample. Measurements of the ultraviolet are modelled within the context of magnetospheric accretion, allowing a direct determination of mass accretion rates. Multiple correlations are observed across the sample between accretion and stellar properties: the youngest and often most massive stars are the strongest accretors, and there is an almost 1:1 relationship between the accretion luminosity and stellar luminosity. Despite these overall trends of increased accretion rates in HAeBes when compared to classical T Tauri stars, we also find noticeable differences in correlations when considering the Herbig Ae and Herbig Be subsets. This, combined with the difficulty in applying a magnetospheric accretion model to some of the Herbig Be stars, could suggest that another form of accretion may be occurring within Herbig Be mass range.

Abstract Copyright: © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2015)

Journal keyword(s): accretion, accretion discs - techniques: spectroscopic - stars: early-type - stars: formation - stars: pre-main-sequence - stars: variables: T Tauri, Herbig Ae/Be

VizieR on-line data: <Available at CDS (J/MNRAS/453/976): table1.dat table2.dat table3.dat tablea1.dat refs.dat>

Simbad objects: 96

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