SIMBAD references

2014ApJ...783...36M - Astrophys. J., 783, 36 (2014/March-1)

An observational investigation of the identity of B11244 (l-C3H+/C3H).

McGUIRE B.A., CARROLL P.B., GRATIER P., GUZMAN V., PETY J., ROUEFF E., GERIN M., BLAKE G.A. and REMIJAN A.J.

Abstract (from CDS):

Pety et al. have reported the detection of eight transitions of a closed-shell, linear molecule (B11244) in observations toward the Horsehead photodissociation region (PDR), which they attribute to the l-C3H+ cation. Recent high-level ab initio calculations have called this assignment into question; the anionic C3H molecule has been suggested as a more likely candidate. Here, we examine observations of the Horsehead PDR, Sgr B2(N), TMC-1, and IRC+10216 in the context of both l-C3H+ and C3H. We find no observational evidence of Ka= 1 lines, which should be present were the carrier indeed C3H. Additionally, we find a strong anticorrelation between the presence of known molecular anions and B11244 in these regions. Finally, we discuss the formation and destruction chemistry of C3H in the context of the physical conditions in the regions. Based on these results, we conclude there is little evidence to support the claim that the carrier is C3H.

Abstract Copyright:

Journal keyword(s): astrochemistry - ISM: clouds - ISM: individual (Sagittarius B2(N), TMC-1, Horsehead PDR, IRC+10216) - ISM: molecules

VizieR on-line data: <Available at CDS (J/ApJ/783/36): table2.dat>

Simbad objects: 5

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2020.01.28-07:35:53

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