J/A+A/475/559 12CO(1-0) and 12CO(2-1) maps of EP Aqr (Winters+, 2007)
Mass loss from dusty, low outflow-velocity AGB stars.
II. The multiple wind of EP Aquarii.
Winters J.M., Le Bertre T., Pety J., Neri R.
<Astron. Astrophys. 475, 559 (2007)>
=2007A&A...475..559W 2007A&A...475..559W
ADC_Keywords: Stars, variable ; Radio lines
Keywords: hydrodynamics - stars: mass-loss - stars: AGB and post-AGB -
stars: winds, outflows - radio lines: stars - circumstellar matter
Abstract:
CO rotational lines are frequently used to trace the outflows from
AGB stars. Some profiles are composite, with a narrow component
super-imposed on a broader one. These profiles have been interpreted
in different ways, calling for episodic mass loss, a bipolar flow, or
a circumstellar disk.
Description:
We have obtained detailed 12CO(2-1) and 12CO(1-0) spectral maps of
EP Aqr, a prototypical source with composite CO profiles.
Interferometric data were acquired with the IRAM interferometer and
combined with on-the-fly maps obtained at the IRAM 30-m. The resulting
maps in 12CO(2-1) and 12CO(1-0) cover a field of 100"x100" with a
spectral resolution of 0.1km/s and with synthesized beams of
1.7"x1.0" and 3.5"x1.8", respectively. The FITS files presented here
contain the spectral data cubes, rebinned to a velocity resolution of
1km/s. Each of the 26 velocity channels contains a map of 256x256
pixels of size 0.26x0.26arcsec2 for fig6 (12CO(1-0)) and
0.14x0.14arcsec2 for fig7 (12CO(2-1)).
Objects:
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RA (2000) DE Designation(s)
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21 46 31.8 -02 12 46 EP Aqr = HD 207076
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
list.dat 78 2 List of data cubes
fits/* . 2 FITS maps
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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- 8 A8 --- FileName Name of the FITS file in subdirectory fits
10- 78 A69 --- Title Title of the file
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Acknowledgements:
Jan Martin Winters,
References:
Winters et al., Paper I 2003A&A...409..715W 2003A&A...409..715W
(End) Patricia Vannier [CDS] 01-Oct-2007