2013ApJ...764..140M


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.19CEST14:04:52

2013ApJ...764..140M - Astrophys. J., 764, 140 (2013/February-3)

Origin of the dense core mass function in contracting filaments.

MYERS P.C.

Abstract (from CDS):

Mass functions of starless dense cores (CMFs) may arise from contraction and dispersal of core-forming filaments. In an illustrative model, a filament contracts radially by self-gravity, increasing the mass of its cores. During this contraction, FUV photoevaporation and ablation by shocks and winds disperse filament gas and limit core growth. The stopping times of core growth are described by a waiting-time distribution. The initial filament column density profile and the resulting CMF each match recent Herschel observations in detail. Then low-mass cores have short growth ages and arise from the innermost filament gas, while massive cores have long growth ages and draw from more extended filament gas. The model fits the initial density profile and CMF best for mean core density 2x104/cm3 and filament dispersal timescale 0.5 Myr. Then the typical core mass, radius, mean column density, and contraction speed are respectively 0.8 solar masses, 0.06 pc, 6x1021/cm2, and 0.07 km/s, also in accord with observed values.

Abstract Copyright:

Journal keyword(s): ISM: clouds - stars: formation

Simbad objects: 14

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Number of rows : 14

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 Barnard 211 DNe 04 17 35 +27 43.1           ~ 100 0
2 Barnard 213 DNe 04 20 51 +27 16.3           ~ 168 0
3 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 3681 0
4 NAME Vela C Cld 08 57 -43.2           ~ 139 0
5 RCW 36 HII 08 59 00.9 -43 44 10     15.20     ~ 126 0
6 HD 147889 Y*O 16 25 24.3162969787 -24 27 56.570239619 8.56 8.73 7.90     B2III/IV 445 1
7 [DAM2004] Oph A-N6 cor 16 26 31.6 -24 24 52           ~ 17 0
8 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3156 1
9 NAME the Pipe Nebula DNe 17 30 -25.0           ~ 351 1
10 NAME Serpens South Cluster Cl* 18 30 03.00 -02 01 58.2           ~ 107 0
11 IC 5146 OpC 21 53 24 +47 16.0           ~ 400 2
12 BD+46 3474 ** 21 53 28.8522000915 +47 15 59.829571300 10.27 10.37 9.63 9.42   B1V 50 0
13 NAME Aql Region reg ~ ~           ~ 328 0
14 NAME Vela Field reg ~ ~           ~ 156 0

    Equat.    Gal    SGal    Ecl

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2021.04.19-14:04:52

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