J/A+A/564/A68 Orion A GMC 13CO and C18O maps (Shimajiri+, 2014)
High abundance ratio of 13CO to C18O toward photon-dominated regions in the
Orion-A giant molecular cloud.
Shimajiri Y., Kitamura Y., Saito M., Momose M., Nakamura F., Dobashi K.,
Shimoikura T., Nishitani H., Yamabi A., Hara C., Katakura S., Tsukagoshi T.,
Tanaka T., Kawabe R.
<Astron. Astrophys. 564, A68 (2014)>
=2014A&A...564A..68S 2014A&A...564A..68S
ADC_Keywords: Interstellar medium ; H II regions ; Radial velocities
Keywords: individual objects: Orion-A Giant Molecular Cloud - ISM: clouds -
(ISM:) photon-dominated region (PDR)
Abstract:
We derive physical properties such as the optical depths and the
column densities of 13CO and C18O to investigate the relationship
between the far ultraviolet (FUV) radiation and the abundance ratios
between 13CO and C18O.
Description:
We have carried out wide-field (0.4°2) observations with an
angular resolution of 25.8" (∼0.05pc) in 13CO (J=1-0) and C18O
(J=1-0) toward the Orion-A giant molecular cloud using the Nobeyama
45m telescope in the on-the-fly mode. The 12CO(1-0) velocity cube
data are from Shimajiri et al. 2011PASJ...63..105S 2011PASJ...63..105S and Nakamura et al.
2012ApJ...746...25N 2012ApJ...746...25N.
Objects:
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RA (2000) DE Designation(s)
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05 35.0 -05 20 Orion A GMC = Ori A GMC
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
list.dat 200 4 List of FITS files
fits/* . 4 Individual FITS files
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Byte-by-byte Description of file: list.dat
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Bytes Format Units Label Explanations
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1- 9 F9.5 deg RAdeg Right Ascension of center (J2000)
10- 18 F9.5 deg DEdeg Declination of center (J2000)
20- 23 F4.1 arcsec/pix Scale [7.5/10] Scale of the image
25- 27 I3 --- Nx [297/756] Number of pixels along X-axis
28 A1 --- --- [x]
29- 32 I4 --- Ny [370/1113] Number of pixels along Y-axis
33 A1 --- --- [x]
34- 36 I3 --- Nz [50/100]? Number of pixels along Z-axis
38- 43 F6.2 km/s Vmin [-20/9] LSR velocity interval
(lower limit)
45- 49 F5.2 km/s Vmax [8/30] LSR velocity interval
(upper limit)
51- 53 F3.1 km/s dVLSR [0.5/0.8]? LSR velocity increment
55- 60 I6 Kibyte size [439/328688] Size of FITS file
62- 71 A10 --- FileName Name of FITS file in subdirectory fits
73-200 A128 --- Title Title of the file and comments
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Acknowledgements:
Yoshito Shimajiri, Yoshito.Shimajiri(at)cea.fr
(End) Patricia Vannier [CDS] 11-Mar-2014