SIMBAD references

2014MNRAS.439..256E - Mon. Not. R. Astron. Soc., 439, 256-263 (2014/March-3)

The {dot}M-M* relation of pre-main-sequence stars: a consequence of X-ray driven disc evolution.


Abstract (from CDS):

We analyse current measurements of accretion rates on to pre-main-sequence stars as a function of stellar mass, and conclude that the steep dependence of accretion rates on stellar mass is real and not driven by selection/detection threshold, as has been previously feared. These conclusions are reached by means of statistical tests including a survival analysis which can account for upper limits. The power-law slope of the \skew3{dot}M-M_* relation is found to be in the range of 1.6-1.9 for young stars with masses lower than 1M. The measured slopes and distributions can be easily reproduced by means of a simple disc model which includes viscous accretion and X-ray photoevaporation. We conclude that the \skew3{dot}M-M_* relation in pre-main-sequence stars bears the signature of disc dispersal by X-ray photoevaporation, suggesting that the relation is a straightforward consequence of disc physics rather than an imprint of initial conditions.

Abstract Copyright: © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)

Journal keyword(s): radiative transfer - protoplanetary discs - dust, extinction - infrared: stars

CDS comments: LDN 1630N is [FM2008] NGC 2068-2071 Cluster in Simbad.

Simbad objects: 19

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