Access to Astronomical Catalogues

← Click to display the menu
J/A+A/599/A135      NH3 Odin observations towards Sgr A    (Sandqvist+, 2017)

Odin observations of ammonia in the Sgr A +50 km/s cloud and circumnuclear disk. Sandqvist Aa., Hjalmarson A., Frisk U., Lundin S., Nordh L., Olberg M., Olofsson G. <Astron. Astrophys. 599, A135 (2017)> =2017A&A...599A.135S (SIMBAD/NED BibCode)
ADC_Keywords: Interstellar medium ; Molecular clouds ; Radio lines Keywords: Galaxy: centre - ISM: individual objects: Sgr A - ISM: molecules - ISM: clouds Abstract: The Odin satellite is now into its sixteenth year of operation, much surpassing its design life of two years. One of the sources which Odin has observed in great detail is the Sgr A Complex in the centre of the Milky Way. The aim is to study the presence of NH3 in the Galactic Centre and spiral arms. Recently, Odin has made complementary observations of the 572GHz NH3 line towards the Sgr A +50km/s cloud and Circumnuclear Disk (CND). Significant NH3 emission has been observed in both the +50km/s cloud and the CND. Clear NH3 absorption has also been detected in many of the spiral arm features along the line of sight from the Sun to the core of our Galaxy. The very large velocity width (80km/s) of the NH3 emission associated with the shock region in the southwestern part of the CND may suggest a formation/desorption scenario similar to that of gas-phase H2O in shocks/outflows. Description: 50nh3cds.fit (Fig. 1 in paper). Odin observations of the 572GHz NH3 line towards the Sgr A +50km/s Cloud (J2000.0 17:45:51.7, -28:59:09the channel resolution is 1.6km/s. cndnh3cd.fit (Fig. 2 in paper). Odin observations of the 572GHz NH3 line towards the south-western part of the Sgr A Circumnuclear Disk (J2000.0 17:45:39.7, -29:01:18); the channel resolution is 1.6km/s. cndh218o.fit (Fig. 3 in paper). Odin observations of the 548GHz H218O line towards the southwestern part of the Sgr A Circumnuclear Disk (J2000.0 17:45:39.7, -29:01:18); the channel resolution is 3km/s. Objects: ------------------------------------------------ RA (2000) DE Designation(s) ------------------------------------------------ 17 45 40.04 -29 00 28.2 Sgr A = NAME Sgr A* ------------------------------------------------ File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file list.dat 183 3 List of fits spectra fits/* 0 3 Individual fits spectra
See also: J/other/Sci/348.413 : Sgr A East SNR multiwavelength images (Lau+, 2015) J/ApJ/802/69 : VLA, ALMA and SMA monitoring of Sgr A* (Bower+, 2015) J/A+A/589/A116 : Multiwavelength study of Sgr A* (Mossoux+, 2016) Byte-by-byte Description of file: list.dat
Bytes Format Units Label Explanations
1- 9 F9.5 deg RAdeg Right Ascension of center (J2000) 10- 18 F9.5 deg DEdeg Declination of center (J2000) 20- 22 I3 --- Nx Number of pixels along X-axis 24- 34 E11.7 Hz bFreq Lower value of interval frequency 36- 46 E11.7 Hz BFreq Upper value of interval frequency 48- 58 E11.7 Hz dFreq Frequency resolution 60 I1 Kibyte size Size of FITS file 62- 73 A12 --- FileName Name of FITS file, in subdirectory fits 75-183 A109 --- Title Title of the FITS file
Acknowledgements: Aage Sandqvist, aage(at)astro.su.se References: Karlsson et al., 2013A&A...554A.141K, Hydroxyl, water, ammonia, carbon monoxide, and neutral carbon towards the Sagittarius A complex. VLA, Odin, and SEST observations.
(End) Aage Sandqvist [Stockholm Obs.], Patricia Vannier [CDS] 10-Feb-2017
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

catalogue service

© UDS/CNRS

Contact