J/ApJ/655/351 Massive quiescent cores in Orion. II. (Li+, 2007)
Massive quiescent cores in Orion. II. Core mass function.
Li D., Velusamy T., Goldsmith P.F., Langer W.D.
<Astrophys. J., 655, 351-363 (2007)>
=2007ApJ...655..351L 2007ApJ...655..351L
ADC_Keywords: Molecular clouds ; Millimetric/submm sources
Keywords: ISM: clouds - methods: data analysis - stars: formation -
stars: individual (Orion) - submillimeter
Abstract:
We have surveyed submillimeter continuum emission from relatively
quiescent regions in the Orion molecular cloud to determine how the
core mass function in a high-mass star-forming region compares to the
stellar initial mass function. Such studies are important for
understanding the evolution of cores to stars, and for comparison to
formation processes in high- and low-mass star-forming regions. We
used the SHARC II camera on the Caltech Submillimeter Observatory
telescope to obtain 350um data having angular resolution of about 9",
which corresponds to 0.02pc at the distance of Orion. Further data
processing using a deconvolution routine enhances the resolution to
about 3". Such high angular resolution allows a rare look into
individually resolved dense structures in a massive star-forming
region.
Description:
We have used the Submillimeter High Angular Resolution Camera (SHARC
II), installed on the 10.4m telescope of the Caltech Submillimeter
Observatory (CSO) to carry out the survey of quiescent Orion cores.
During three observing runs from 2003 to 2005 at the CSO, we have
obtained 350um maps for eight fields toward quiescent portions of
Orion.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 49 51 Quiescent cores in Orion
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- [LVG2007] Name (1)
10- 11 I2 h RAh Right ascension (J2000)
13- 14 I2 min RAm Right ascension (J2000)
16- 20 F5.2 s RAs Right ascension (J2000)
22 A1 --- DE- Decination sign (J2000) (2)
23- 24 I2 deg DEd Decination (J2000)
26- 27 I2 arcmin DEm Decination (J2000)
29- 32 F4.1 arcsec DEs Decination (J2000)
34- 37 F4.2 0.1pc Rad Radius (Mean value of the semi-major and
semi-minor axes)
39- 43 F5.2 Jy PFlux Peak flux at 350um (Jy per 9" beam)
45- 49 F5.2 solMass Mass Mass
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Note (1): The source is identified by the survey region where the core is
located followed by a sub number assigned according to its declination.
Note (2): The sources are sorted from north to south.
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History:
From electronic version of the journal
References:
Li et al., Paper I 2003ApJ...587..262L 2003ApJ...587..262L
(End) Patricia Vannier [CDS] 08-Dec-2008