2013ApJ...771...49Y


Query : 2013ApJ...771...49Y

2013ApJ...771...49Y - Astrophys. J., 771, 49 (2013/July-1)

Quantum calculation of inelastic CO collisions with H. I. Rotational quenching of low-lying rotational levels.

YANG B., STANCIL P.C., BALAKRISHNAN N., FORREY R.C. and BOWMAN J.M.

Abstract (from CDS):

New quantum scattering calculations for rotational deexcitation transitions of CO induced by H collisions using two CO-H potential energy surfaces (PESs) from Shepler et al. are reported. State-to-state rate coefficients are computed for temperatures ranging from 1 to 3000 K for CO(v = 0, j) deexcitation from j = 1 to 5 to all lower j' levels, with j being the rotational quantum number. Different resonance structures in the cross sections are attributed to the differences in the anisotropy and the long-range van der Waals well depths of the two PESs. These differences affect rate coefficients at low temperatures and give an indication of the uncertainty of the results. Significant discrepancies are found between the current rate coefficients and previous results computed using earlier potentials, while the current results satisfy expected propensity rules. Astrophysical applications to modeling far infrared and submillimeter observations are briefly discussed.

Abstract Copyright:

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

Simbad objects: 20

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Number of rows : 20
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 M 77 GiP 02 42 40.771 -00 00 47.84 9.70 9.61 8.87 10.1 9.9 ~ 4238 2
2 [JCC87] IRAS 2A Y*O 03 28 55.55 +31 14 36.7           ~ 420 3
3 2MASS J03290842+3115284 NIR 03 29 08.420 +31 15 28.48           ~ 226 1
4 [JCC87] IRAS 4A Y*O 03 29 10.49 +31 13 30.8           ~ 638 1
5 [JCC87] IRAS 4 FIR 03 29 10.9 +31 13 26           ~ 473 0
6 NGC 1333 OpC 03 29 11 +31 18.6           ~ 1279 1
7 [JCC87] IRAS 4B Y*O 03 29 12.058 +31 13 02.05           ~ 573 0
8 RAFGL 618 pA* 04 42 53.6245215366 +36 06 53.397219192   16.32   12.59   C-rich 969 0
9 NAME Orion Peak 1 PoC 05 35 13.57 -05 22 03.8           ~ 33 0
10 NAME Orion Peak 2 PoC 05 35 15.74 -05 22 39.9           ~ 21 0
11 HD 42581B BD* 06 10 34.80 -21 52 00.0           T6.5 470 0
12 IC 443C PoC 06 17 44.2 +22 21 49           ~ 28 0
13 HH 54 HH 12 55 49.5 -76 56 08           ~ 119 0
14 PN M 2-9 PN 17 05 37.952 -10 08 34.58   12.59 14.7     Be 507 0
15 NAME Galactic Center gam 17 45 39.60213 -29 00 22.0000           ~ 12382 0
16 SNR G006.4-00.1 SNR 18 01 22.7 -23 17 20           ~ 675 1
17 3C 391.0 Rad 18 49 23.3 -00 55 38           ~ 330 2
18 SNR G034.6-00.5 SNR 18 56 10.650 +01 13 21.30           ~ 865 2
19 V* V1610 Cyg pA* 21 02 18.27 +36 41 37.0           F5Iae 843 1
20 NGC 7027 PN 21 07 01.571952 +42 14 10.47120   10.358 8.831 10.157   ~ 2369 1

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2021.09.22-15:29:16

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