J/A+A/600/A4 M 2-9 12CO and 13CO channel maps (Castro-Carrizo+, 2017)
Structure and dynamics of the molecular gas in M2-9:
a follow-up study with ALMA.
Castro-Carrizo A., Bujarrabal V., Neri R., Alcolea J.,
Sanchez Contreras C., Santander-Garcia M., Nyman L.-A.
<Astron. Astrophys. 600, A4 (2017)>
=2017A&A...600A...4C 2017A&A...600A...4C (SIMBAD/NED BibCode)
ADC_Keywords: Planetary nebulae ; Radial velocities ; Radio lines
Keywords: circumstellar matter - stars: AGB and post-AGB - radio lines: stars -
stars: mass-loss - stars: individual: PN M2-9
Abstract:
M 2-9 is a young planetary nebula (PN) that shows the
characteristics of its last ejections in unprecedented detail. These
last ejections are thought to trigger the post-asymptotic giant
branch evolution.
To assemble an overall picture of how M 2-9 was shaped, we
analyzed the characteristics of the different molecular gas components
and their relation with the warmer parts of the nebula that are
visible in the optical domain.
12CO and 13CO J=3-2 line emission maps were obtained with the
Atacama Large Millimeter/submillimeter Array with high
angular-resolution and sensitivity.
Description:
m2-912co3204kms.fits:
Cube of channel maps of the 12CO J=3-2 line emission toward M2-9.
The center is given by the position of compact continuum emission,
here subtracted, at J2000 coordinates
RA=17:05:37.966, Dec=-10:08:32.63. The first axis in the cube refers
to RA coordinates, second to Declination reference, and third the LSR
velocity. The synthesized beam is 0.19x0.16-arcsec with the major axis
PA=116-degrees. The spectral spacing of 0.488MHz (0.423km/s). The
brightness is presented in Jy/beam units, and the conversion factor
into Rayleigh-Jeans-equivalent TMB units is 330K/(Jy/beam).
m2-913co3204kms.fits:
Cube of channel maps of the 13CO J=3-2 line emission toward M2-9.
The center is given by the position of compact continuum emission,
here subtracted, at J2000 coordinates
RA=17:05:37.966, Dec=-10:08:32.63. The first axis in the cube refers
to RA coordinates, second to Declination reference, and third the LSR
velocity. The synthesized beam is 0.20x0.17-arcsec with the major axis
PA=-79-degrees. The spectral spacing of 0.488MHz (0.442km/s). The
brightness is presented in Jy/beam units, and the conversion factor
into Rayleigh-Jeans-equivalent TMB units is 326K/(Jy/beam).
Objects:
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RA (2000) DE Designation(s)
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17 05 37.95 -10 08 34.6 PN M2-9 = PN G010.8+18.0
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
list.dat 154 2 List of fits cubes
fits/* . 2 Individual fits cubes
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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 I4 --- Nx Number of pixels along X-axis
25- 28 I4 --- Ny Number of pixels along Y-axis
30- 32 I3 --- Nz Number of slices
34- 40 F7.1 km/s bVRAD Lower value of radial velocity interval
42- 49 F8.1 km/s BVRAD Upper value of radial velocity interval
51- 57 F7.3 km/s dVRAD Radial velocity resolution
59- 64 I6 Kibyte size Size of FITS file
66- 87 A22 --- FileName Name of FITS file, in subdirectory fits
89-154 A66 --- Title Title of the FITS file
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Acknowledgements:
Arancha Castro-Carrizo, ccarrizo(at)iram.fr
(End) Patricia Vannier [CDS] 01-Feb-2017