Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...264...49c&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 264, no. 1, p. 49-54.
Astronomy and Astrophysics
Astronomy
29
Galactic Evolution, Galactic Nuclei, Molecular Clouds, Sky Surveys (Astronomy), Abundance, Astronomical Spectroscopy, Carbon Monoxide, Emission Spectra, Interstellar Matter, Luminosity, Spiral Galaxies
Scientific paper
A molecular-line survey of the southern merger remnant NGC 3256, made with the SEST 15-m telescope, is presented. Four lines are detected: C(O-18)(J = 1-0), CS (J = 2-1), HCN (J = 1-0), and HCO(+) (J = 1-0), and an upper limit for the CH3OH(2K-1K) line is obtained. At the 9-kpc scale, the line intensities derived for CS, HCN, and HCO(+) relative to (C-12)O are within the range reported for CO-bright spirals at the much smaller scale of 1 kpc. They are weaker than those measured in Arp 220, which in turn compare to what is found at 200 pc scale in the same spirals. It is inferred that the fraction of dense gas in NGC 3256 is larger than in spiral galaxies, but smaller than in the IR-ultraluminous object Arp 220, and it is suggested that this increased with the FIR luminosity. The faintness of the (C-13)O and C(O-18) emissions with respect to (C-12)O is found to be due to peculiar molecular abundances.
Casoli Fabienne
Combes François
Dupraz Christophe
No associations
LandOfFree
A molecular line survey of the merger NGC 3256 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A molecular line survey of the merger NGC 3256, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A molecular line survey of the merger NGC 3256 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1868062