/ftp/cats/A+A/648/A93



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J/A+A/648/A93       4 post-AGB stars datacubes            (Cava Gallardo+, 2021)
The following files can be converted to FITS (extension .fit or fit.gz)
	list.dat
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Query from: http://vizier.cds.unistra.fr/viz-bin/VizieR?-source=J/A+A/648/A93
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drwxr-xr-x 36 cats archive 4096 Jun 28 2021 [Up] drwxr-xr-x 4 cats archive 287 Jan 12 2023 [TAR file] -rw-r--r-- 1 cats archive 466 Dec 19 2022 .message -r--r--r-- 1 cats archive 5473 Apr 20 2021 ReadMe -rw-r--r-- 1 cats archive 224 Apr 20 2021 +footg5.gif -rw-r--r-- 1 cats archive 2210 Apr 20 2021 +footg8.gif drwxr-xr-x 2 cats archive 183 Mar 8 2021 fits -r--r--r-- 1 cats archive 938 Apr 19 2021 list.dat [txt] [txt.gz] [fits] [fits.gz] [html]
Beginning of ReadMe : J/A+A/648/A93 4 post-AGB stars datacubes (Gallardo Cava+, 2021) ================================================================================ Keplerian disks and outflows in post-AGB stars: AC Herculis, 89 Herculis, IRAS 19125+0343, and R Scuti. Gallardo Cava I., Gomez-Garrido M., Bujarrabal V., Castro-Carrizo A., Alcolea J., Van Winckel H. <Astron. Astrophys. 648, A93 (2021)> =2021A&A...648A..93G (SIMBAD/NED BibCode) ================================================================================ ADC_Keywords: Planetary nebulae ; Radio lines ; Carbon monoxide Keywords: stars: AGB and post-AGB - binaries: general - circumstellar matter - radio lines: stars - ISM: planetary nebulae: individual: AC Her, 89 Her, IRAS 19125+0343, and R Sct - techniques: interferometric Abstract: There is a class of binary post-AGB stars with a remarkable near-infrared excess that are surrounded by Keplerian or quasi-Keplerian disks and extended outflows composed of gas escaping from the disk. The Keplerian dynamics had been well identified in four cases, namely the Red Rectangle, AC Her, IW Car, and IRAS 08544-4431. In these objects, the mass of the outflow represents  10% of the nebular mass, the disk being the dominant component of the nebula. We aim to study the presence of rotating disks in sources of the same class in which the outflow seems to be the dominant component. We present interferometric NOEMA maps of ^12^CO and ^13^CO J=2-1 in 89 Her and ^12^CO J=2-1 in AC Her, IRAS 19125+0343, and R Sct. Several properties of the nebula are obtained from the data and model fitting, including the structure, density, and temperature distributions, as well as the dynamics. We also discuss the uncertainties on the derived values. The presence of an expanding component in AC Her is doubtful, but thanks to new maps and models, we estimate an upper limit to the mass of this outflow of <=3x10^-5^M^sun_, that is, the mass of the outflow is <=5% of the total nebular mass. For 89 Her, we find a total nebular mass of 1.4x10^-2^M_sun_, of which  50% comes from an hourglass-shaped extended outflow. In the case of IRAS 19125+0343, the nebular mass is 1.1x10^-2^M_sun_, where the outflow contributes  70% of the total mass. The nebular mass of R Sct is 3.2x10^-2^M_sun_, of which  75% corresponds to a very extended outflow that surrounds the disk. Our results for IRAS 19125+0343 and R Sct lead us to introduce a new subclass of binary post-AGB stars, for which the outflow is the dominant component of the nebula. Moreover, the outflow mass fraction found in AC Her is smaller than those found in other disk-dominated binary post-AGB stars. 89 Her would represent an intermediate case between both subclasses. Description: All datacubes are obtained from NOEMA interferometer. All files are in FITS format and they are the final and reduced datacubes used in the article. Each file is named as IGC_source_transition.fits. IGC represent my name: Ivan Gallardo Cava. Objects: ---------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------- 17 55 25.19 +26 03 00.0 89 Her = * 89 Her 18 30 16.24 +21 52 00.6 AC Her = V* AC Her 19 15 01.18 +03 48 42.6 IRAS 19125+0343 = BD+03 3950 18 47 28.95 -05 42 18.5 R Scuti = V* R Sct ----------------------------------------------------------