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J/A+A/527/A135 Gas dynamics in Massive Dense Cores in Cygnus-X (Csengeri+, 2011)

Gas dynamics in Massive Dense Cores in Cygnus-X. Csengeri T., Bontemps S., Schneider N., Motte F., Dib S. <Astron. Astrophys. 527, A135 (2011)> =2011A&A...527A.135C
ADC_Keywords: Molecular clouds ; Interstellar medium ; Millimetric/submm sources ; Spectra, millimetric/submm Keywords: ISM: kinematics and dynamics - radio lines: ISM - molecular data - star: protostars Abstract: We studied the kinematic properties of dense gas surrounding massive protostars in a sample of five Massive Dense Cores (MDCs) in Cygnus-X. The aim is to investigate whether turbulent support plays a major role in stabilizing the cores against a rapid fragmentation into Jeans-mass objects. Alternatively the observed kinematics could indicate a high level of dynamics suggesting that the cores are actually not in equilibrium and dynamical processes could be the main driver to build up the final stellar masses. Description: Here we present IRAM Plateau de Bure interferometric spectra cubes of the H13CO+ (J=1-0) and H13CN (J=1-0) lines for the sample of five cores. (All the maps are corrected for the primary beam attenuation.) PdBI+30m H13CO+ J=(1-0) and PdBI H13CN (J=1-0) line emission. The data cubes are 256x256x460 voxels, at a scale 0.62arcsec/pix and 0.135km/s/pix; the velocity range is (-14.6/47.3km/s) Objects: ------------------------------------------------------------ RA (2000) DE Designation(s) ------------------------------------------------------------ 20 35 34.1 +42 20 05.0 CygX-N3 = [MBS2007c] CygX-N3 20 36 57.4 +42 11 27.5 CygX-N12 = [MBS2007c] CygX-N12 20 39 01.5 +42 22 04.0 CygX-N48 = [MBS2007c] CygX-N48 20 39 03.1 +42 25 50.0 CygX-N53 = [MBS2007c] CygX-N53 20 40 05.2 +41 32 11.9 CygX-N63 = [MBS2007c] CygX-N63 ------------------------------------------------------------ File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file maps.dat 104 10 List of maps figs/* 0 10 FITS spectra cubes
See also: J/A+A/241/551 : Radio continuum in Cygnus X region (Wendker+ 1991) J/A+A/375/539 : Compact HII regions in Cyg X JHK photometry (Comeron+, 2001) J/A+A/476/1243 : Millimeter continuum mapping of Cygnus X (Motte+, 2007) Byte-by-byte Description of file: maps.dat
Bytes Format Units Label Explanations
1- 8 A8 --- Name Source name 10- 18 F9.5 deg RAdeg Right ascension of field center (J2000) 19- 27 F9.5 deg DEdeg Declination of field center (J2000) 29- 32 F4.2 arcsec/pix scale [0.62] Pixel scale 34- 38 F5.1 km/s Vmin Minimal velocity of the cube 40- 44 F5.1 km/s Vmax Maximal velocity of the cube 46- 64 A19 --- File Name of FITS file, in "figs" subdirectory 66-104 A39 --- Title Title of the file
Acknowledgements: Timea Csengeri, timea.csengeri(at)cea.fr
(End) Patricia Vannier [CDS] 04-Nov-2010
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