Dense cloud cores
- Creators
- Güsten, R.
- Schulze, A.
- Serabyn, E.
- Others:
- Falgarone, E.
- Boulanger, F.
- Duvert, G.
Abstract
In order to search for ultra-dense gas condensations as possible sites of future star formation, observations with highest possible angular resolution in high-gas density probing molecular species are required. Here we report first results from two-telescope (IRAM 30-m & CSO 10.4-m) multi-transition excitation studies of the linear molecules CS and HCN, both with critical densities ncτ107 cm⁻³. We obtained maps towards a number of galactic cloud cores in the CS(J=5−4;7−6) and the HCN(3−2;4−3) mm/submm transitions and those of their optically thin isotopic species (C³⁴S; H¹³CN) accessible from ground. For a proper excitation analysis, the gas temperature has been determined independently from the symmetric top molecules NH₃ or CH₃CN. Here we present first results obtained towards the NGC 2024 molecular cloud core (Schulz et al. 1990).
Additional Information
© Springer Science+Business Media Dordrecht 1991.Additional details
- Eprint ID
- 106445
- Resolver ID
- CaltechAUTHORS:20201104-193125504
- Created
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2020-11-12Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field