SIMBAD references

2013MNRAS.434...84W - Mon. Not. R. Astron. Soc., 434, 84-101 (2013/September-1)

The mmax-mecl relation, the IMF and IGIMF: probabilistically sampled functions.

WEIDNER C., KROUPA P. and PFLAMM-ALTENBURG J.

Abstract (from CDS):

We introduce a new method to measure the dispersion of mmax values of star clusters and show that the observed sample of mmax is inconsistent with random sampling from a universal stellar initial mass function (IMF) at a 99.9 per cent confidence level. The scatter seen in the mmax-Mecl data can be mainly (76 per cent) understood as being the result of observational uncertainties only. The scatter of mmax values at a given Mecl is consistent with mostly being measurement uncertainties such that the true (physical) scatter may be very small. Additionally, new data on the local star-formation regions Taurus-Auriga and L1641 in Orion make stochastically formed stellar populations rather unlikely. The data are however consistent with the local integrated galactic stellar initial mass function theory according to which a stellar population is a sum of individual star-forming events each of which is described by well-defined physical laws. Randomly sampled IMFs and henceforth scale-free star formation seems to be in contradiction to observed reality.

Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): stars: formation - stars: luminosity function, mass function - open clusters and associations: general - galaxies: stellar content

Status in Simbad:  being processed

Simbad objects: 12

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2019.12.10-03:03:21

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