Access to Astronomical Catalogues

← Click to display the menu
J/A+A/598/A59          G31.41+0.31 SMA spectra                  (Rivilla+, 2017)

Formation of ethylene glycol and other complex organic molecules in star-forming regions. Rivilla V.M., Beltran M.T., Cesaroni R., Fontani F., Codella C., Zhang Q. <Astron. Astrophys. 598, A59 (2017)> =2017A&A...598A..59R (SIMBAD/NED BibCode)
ADC_Keywords: H II regions ; Spectroscopy Keywords: astrobiology - astrochemistry - line: identification - molecular data - opacity - ISM: molecules Abstract: The detection of complex organic molecules related with prebiotic chemistry in star-forming regions allows us to investigate how the basic building blocks of life are formed. Ethylene glycol (CH2OH)2 is the simplest sugar alcohol and the reduced alcohol of the simplest sugar glycoladehyde (CH2OHCHO). We study the molecular abundance and spatial distribution of (CH2OH)2, CH2OHCHO and other chemically related complex organic species (CH3OCHO, CH3OCH3, and C2H5OH) towards the chemically rich massive star-forming region G31.41+0.31. We analyzed multiple single-dish (Green Bank Telescope and IRAM 30m) and interferometric (Submillimeter Array) spectra towards G31.41+0.31, covering a range of frequencies from 45 to 258GHz. We fitted the observed spectra with a local thermodynamic equilibrium (LTE) synthetic spectra, and obtained excitation temperatures and column densities. We compared our findings in G31.41+0.31 with the results found in other environments, including low- and high-mass star-forming regions, quiescent clouds and comets. Description: In this work we have used observations performed with the single-dish telescopes GBT and IRAM 30m, and the SMA interferometer, which provide us with wide spectral coverage and spatial information. Objects: ---------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------- 18 47 34.6 -01 12 43 G31.41+0.31 = GAL 031.41+00.31 ---------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file g31-lsb.dat 28 1278 SMA spectra (LSB) towards the G31.41+0.31 hot molecular core (Fig. 2) g31-usb.dat 28 1278 SMA spectra (USB) towards the G31.41+0.31 hot molecular core (Fig. 2)
Byte-by-byte Description of file: g31-lsb.dat g31-usb.dat
Bytes Format Units Label Explanations
1- 13 F13.9 GHz Freq Frequency 16- 28 F13.10 Jy/beam Flux Flux
Acknowledgements: Victor Rivilla, rivilla(at)arcetri.astro.it
(End) Patricia Vannier [CDS] 27-Jan-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