J/A+A/563/L6 CIG 638 CCH, HCN. HOC and HNC spectra (Martin+, 2014)
Chemistry in isolation: Large CCH/HCO+ abundance ratio in the AMIGA galaxy
CIG 638.
Martin S., Verdes-Montenegro L., Aladro R., Espada D., Argudo-Ferandez M.,
Kramer C., Scott T.C.
<Astron. Astrophys. 563, L6 (2014)>
=2014A&A...563L...6M 2014A&A...563L...6M
ADC_Keywords: Galaxies, spectra
Keywords: galaxies: individual: GIG 638 - astrochemistry - ISM: abundances -
ISM: molecules - galaxies: ISM
Abstract:
Multi-molecule observations towards an increasing variety of galaxies
have been showing that the relative molecular abundances are affected
by the type of activity. However, these studies are biased towards
bright active galaxies, which are typically in interaction.
We study the molecular composition of one of the most isolated
galaxies in the local Universe where the physical and chemical
properties of their molecular clouds have been determined by intrinsic
mechanisms.
Description:
IRAM 30m spectra with the FTS spectrometer towards CIG 638. The four
FITS file cover the same 4GHz spectral band, but each is centered at
and baselined around each of the individual spectral features at
87.317GHz (CCH 1-0), 88.630GHz (HCN 1-0), 89.188GHz (HCO+ 1-0) and
90.663GHz (HNC).
Objects:
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RA (2000) DE Designation(s)
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14 37 41.07 +02 17 27.5 CIG 638 = K73 638
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
list.dat 106 4 List of FTS spectra from IRAM 30m telescope
sp/* . 4 Individual FITS spectra
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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- 9 F9.5 deg RAdeg Right Ascension of center (J2000)
10- 18 F9.5 deg DEdeg Declination of center (J2000)
20- 22 I3 --- N [518] Number of channels
24- 32 F9.6 GHz Freq0 Rest frequency of transition ν0
34- 40 F7.4 GHz dnu0 Lower frequency νmin-ν0
43- 49 F7.5 GHz dnu1 Upper frequency νmax-ν0
51- 57 F7.5 MHz dnu [7.858/7.859] Frequency resolution
59- 74 A16 --- FileName Name of FITS file in subdirectory sp
76-104 A29 --- Title Title of the file
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Acknowledgements:
Sergio Martin Ruiz, smartin(at)iram.fr
(End) Patricia Vannier [CDS] 17-Feb-2014