2010ApJ...723L...7K


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.18CEST11:26:08

2010ApJ...723L...7K - Astrophys. J., 723, L7-L12 (2010/November-1)

How many infrared dark clouds can form massive stars and clusters?

KAUFFMANN J. and PILLAI T.

Abstract (from CDS):

We present a new assessment of the ability of Infrared Dark Clouds (IRDCs) to form massive stars and clusters. This is done by comparison with an empirical mass-size threshold for massive star formation (MSF). We establish m(r)>870 M(r/pc)1.33 as a novel approximate MSF limit, based on clouds with and without MSF. Many IRDCs, if not most, fall short of this threshold. Without significant evolution, such clouds are unlikely MSF candidates. This provides a first quantitative assessment of the small number of IRDCs evolving toward MSF. IRDCs below this limit might still form stars and clusters of up to intermediate mass, though (like, e.g., the Ophiuchus and Perseus Molecular Clouds). Nevertheless, a major fraction of the mass contained in IRDCs might reside in few 102 clouds sustaining MSF.

Abstract Copyright:

Journal keyword(s): ISM: clouds - methods: data analysis - stars: formation

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 - 2021
#notes
1 NAME Perseus Cloud SFR 03 35.0 +31 13           ~ 1131 0
2 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 3680 0
3 M 42 HII 05 35 17.3 -05 23 28           ~ 3787 0
4 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3156 1
5 NAME the Pipe Nebula DNe 17 30 -25.0           ~ 351 1
6 NGC 6618 OpC 18 20 47 -16 10.3           ~ 1514 0
7 NAME Cyg X Cld 20 28 41 +41 10.2           ~ 648 1

    Equat.    Gal    SGal    Ecl

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2021.04.18-11:26:08

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