2018MNRAS.478.1811D

Query : 2018MNRAS.478.1811D

2018MNRAS.478.1811D - Mon. Not. R. Astron. Soc., 478, 1811-1817 (2018/August-1)

New rate coefficients of CS in collision with para- and ortho-H2 and astrophysical implications.

DENIS-ALPIZAR O., STOECKLIN T., GUILLOTEAU S. and DUTREY A.

Abstract (from CDS):

Astronomers use the CS molecule as a gas mass tracer in dense regions of the interstellar medium, to measure either the gas density through multiline observations or the level of turbulence. This necessarily requires the knowledge of the rates coefficients with the most common colliders in the interstellar medium, He and H2. In this work, the close coupling collisional rates are computed for the first 30 rotational states of CS in collision with para- and ortho-H2 using a recent rigid rotor potential energy surface. Some radiative transfer calculations, using typical astrophysical conditions, are also performed to test this new set of data and to compare with the existing ones.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): astrochemistry - molecular data - molecular processes - scattering - ISM: molecules

Status at CDS : Large table(s) will be appraised for possible ingestion in VizieR.

Simbad objects: 2

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Number of rows : 2
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 V* DM Tau Or* 04 33 48.7336763736 +18 10 09.973460280 14.30 14.82 14.00     M2Ve 731 0
2 V* TW Hya TT* 11 01 51.9053285064 -34 42 17.033218380   11.94 10.50 10.626 9.18 K6Ve 2144 1

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