2005PASJ...57..605C


Query : 2005PASJ...57..605C

2005PASJ...57..605C - Publ. Astron. Soc. Jap., 57, 605-609 (2005/August-0)

Search for C2– in diffuse clouds.

CIVIS S., HOSAKI Y., KAGI E., IZUMIURA H., YANAGISAWA K., SEDIVCOVA T. and KAWAGUCHI K.

Abstract (from CDS):

A search has been carried out for the C2– ion in diffuse clouds toward HD 23180, HD 24912, HD 24398, HD 46711, and HD 50064 using the HIDES spectrometer on the Okayama 188-cm telescope. An upper limit of 8.3 * 10<sup>10</sup> – 1.8 * 10<sup>12</sup> cm<sup>-2</sup> was obtained for the C<sub>2</sub><sup>-</sup> column density. The upper limit value (3.8 * 10<sup>11</sup> cm<sup>-2</sup>) toward HD 23180 is two orders of magnitude smaller than that of the C<sub>2</sub> radical. Possible production mechanisms for C<sub>2</sub><sup>-</sup> are discussed.

Abstract Copyright: ∼

Journal keyword(s): ISM: clouds - ISM: lines and bands - ISM: molecules - molecular processes

Simbad objects: 8

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Number of rows : 8
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 * omi Per SB* 03 44 19.1337687984 +32 17 17.687367960 3.13 3.91 3.91 3.71 3.71 B1III 628 0
2 * zet Per s*b 03 54 07.9224751 +31 53 01.081262 2.19 2.97 2.85 2.71 2.62 B1Ib 881 0
3 * ksi Per ** 03 58 57.9024302099 +35 47 27.709515737 3.190 4.080 4.060 3.88 3.89 O7.5III(n)((f)) 850 0
4 HD 46711 s*b 06 34 57.0491751096 +02 45 43.213164192 10.09 10.09 9.25 8.45 7.77 B8Ia/ab 71 0
5 HD 50064 s*b 06 51 34.1059967736 +00 17 50.466003216 8.75 9.06 8.30 7.51 6.88 B5Ia+ 87 1
6 * eta UMa PM* 13 47 32.43776 +49 18 47.7602 0.99 1.67 1.86 1.98 2.16 B3V 630 0
7 HD 182040 Pe* 19 23 10.0773440616 -10 42 11.536959456 8.77 8.14 7.05 6.25 5.80 C-Hd2II: 158 0
8 HD 201626 SB* 21 09 59.2755833184 +26 36 55.001033532 9.73 9.26 8.16 7.34 6.82 C-H2IV: 159 0

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