2013ApJ...774...56M


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.25CET21:49:26

2013ApJ...774...56M - Astrophys. J., 774, 56 (2013/September-1)

A search for l-C3H+ and l-C3 H in Sgr B2(N), Sgr B2(OH), and the dark cloud TMC-1.

McGUIRE B.A., CARROLL P.B., LOOMIS R.A., BLAKE G.A., HOLLIS J.M., LOVAS F.J., JEWELL P.R. and REMIJAN A.J.

Abstract (from CDS):

Pety et al. recently reported the detection of several transitions of an unknown carrier in the Horsehead PDR and attribute them to l-C3H+. Here, we have tested the predictive power of their fit by searching for, and identifying, the previously unobserved J = 1-0 and J = 2-1 transitions of the unknown carrier (B11244) toward Sgr B2(N) in data from the publicly available PRIMOS project. Also presented here are observations of the J = 6-5 and J = 7-6 transitions toward Sgr B2(N) and Sgr B2(OH) using the Barry E. Turner Legacy Survey and results from the Kaifu et al. survey of TMC-1. We calculate an excitation temperature and column density of B11244 of ∼10 K and ∼1013/cm2 in Sgr B2(N) and ∼79 K with an upper limit of ≤ 1.5 x1013/cm2 in Sgr B2(OH) and find trace evidence for the cation's presence in TMC-1. Finally, we present spectra of the neutral species in both Sgr B2(N) and TMC-1, and comment on the robustness of the assignment of the detected signals to l-C3H+.

Abstract Copyright:

Journal keyword(s): astrochemistry - ISM: clouds - ISM: individual (Sagittarius B2(N), Sagittarius B2(OH), TMC-1) - ISM: molecules

Simbad objects: 5

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Number of rows : 5

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 TMC-1 MoC 04 41 45.9 +25 41 27           ~ 1337 0
2 IRC +10216 C* 09 47 57.40632 +13 16 43.5648     10.96     C9,5e 2115 0
3 NAME Sgr B2 (North) Rad 17 47 20.2 -28 22 21           ~ 504 1
4 NAME Sgr B2 MoC 17 47 20.4 -28 23 07           ~ 1879 1
5 NAME Sgr B2 (OH) MoC 17 47 20.8 -28 23 32           ~ 79 0

    Equat.    Gal    SGal    Ecl

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2020.02.25-21:49:26

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