2023RNAAS...7..219C

Query : 2023RNAAS...7..219C

2023RNAAS...7..219C - Research Notes of the AAS, 7, 219 (2023/October-0)

The Distribution of High-excitation OCS Emission Around the Cep A-East Protostellar Cluster.

CODELLA C., BACHILLER R. and VITI S.

Abstract (from CDS):

The Cepheus A East high-mass star-forming region has been mapped at 1.4 mm using the OCS(17-16) and (18-17) lines observed with the IRAM 30 m antenna. Contour maps and high-resolution line profiles reveal the association of OCS with both (i) the hot-core region, and (ii) with the NE, SE, and S outflows driven by the young stellar objects. This confirms that OCS is among the main S-molecules observed in the gas-phase after thermal evaporation due to protostellar heating or shocks due to propagation of protostellar jets. Adopting Local Thermodynamic Equilibrium conditions, optically thin emission, and a temperature of 100 K, the total OCS column density (after correction for beam dilution) of the hot-core component is ∼1016 cm–2. For the outflow component, assuming a temperature range of 20-100 K, and extended emission, the OCS column density is ≤ 5 ×1014 cm–2 for a temperature ≥ 20 K.

Abstract Copyright: © 2023. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Star forming regions - Astrochemistry - Interstellar molecules

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME Cepheus A East SFR 22 54.3 +61 46           ~ 70 0

Query : 2023RNAAS...7..219C

Basic data :
NAME Cepheus A East -- Star Forming Region
Other object types: otypes_help 		SFR ()
ICRS coord. (ep=J2000) : 		22 54 18.0 +61 46 00 [ ] E ~
FK4 coord. (ep=B1950 eq=1950) : 		22 52 19.7 +61 30 00 [ ]
Gal coord. (ep=J2000) : 		109.5445 +01.9782 [ ]
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Identifiers (2) :
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NAME Cepheus A East NAME Cep A East

References (70 between 1850 and 2026) (Total 70)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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