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 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