2013ApJ...766...27B


Query : 2013ApJ...766...27B

2013ApJ...766...27B - Astrophys. J., 766, 27 (2013/March-3)

The effect of magnetic fields and ambipolar diffusion on core mass functions.

BAILEY N.D. and BASU S.

Abstract (from CDS):

Linear analysis of the formation of protostellar cores in planar magnetic interstellar clouds yields information about length scales involved in star formation. Combining these length scales with various distributions of other environmental variables (i.e., column density and mass-to-flux ratio) and applying Monte Carlo methods allow us to produce synthetic core mass functions (CMFs) for different environmental conditions. Our analysis shows that the shape of the CMF is directly dependent on the physical conditions of the cloud. Specifically, magnetic fields act to broaden the mass function and develop a high-mass tail while ambipolar diffusion will truncate this high-mass tail. In addition, we analyze the effect of small number statistics on the shape and high-mass slope of the synthetic CMFs. We find that observed CMFs are severely statistically limited, which has a profound effect on the derived slope for the high-mass tail.

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Journal keyword(s): diffusion - ISM: clouds - ISM: magnetic fields - ISM: structure - stars: formation - stars: luminosity function, mass function

Simbad objects: 7

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Number of rows : 7
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026
#notes
1 NAME Per Region reg 03 37 00.0 +31 15 00           ~ 296 0
2 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 4971 0
3 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
4 M 42 HII 05 35 16.8 -05 23 15           ~ 4411 0
5 NAME Orion Molecular Cloud MoC 05 56 -01.8           ~ 1227 1
6 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1
7 NAME Serpens Cloud SFR 18 29 49 +01 14.8           ~ 1195 1

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