2003ApJ...582..823O

Query : 2003ApJ...582..823O

2003ApJ...582..823O - Astrophys. J., 582, 823-829 (2003/January-2)

Observations of C3in translucent sight lines.

OKA T., THORBURN J.A., McCALL B.J., FRIEDMAN S.D., HOBBS L.M., SONNENTRUCKER P., WELTY D.E. and YORK D.G.

Abstract (from CDS):

The A1Πu⟵X1Σ+gtransition of the simplest polyatomic carbon chain molecule, C3, at 4051.6 Å has been searched for toward reddened stars where abundant C2had been reported and toward other stars with high color excess. Absorption from C3has been detected toward 15 stars with color excess E(B-V) from 0.33 to 1.12. The observed C3column densities, ranging from 1012 to 1013 cm–2, are well correlated with the corresponding C2column densities, with N(C2)/N(C3)∼40, indicating their close chemical relation. The carbon-rich sight line toward HD 204827 (for which no previous C2observation had been reported) has by far the highest C3and C2column densities. The chemistry of formation of C3 from C2is discussed. A search for the next strongest 020-000 vibronic band was unsuccessful as a result of the low Franck-Condon factor and interference with a stellar line. Searches for C4and C5were negative.

Abstract Copyright: ∼

Journal keyword(s): Astrochemistry - ISM: Lines and Bands - ISM: Molecules

Simbad objects: 32

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Number of rows : 32
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 HD 20041 * 03 15 47.9705004096 +57 08 26.243459556 6.61 6.52 5.79     A0Ia 146 1
2 HD 21483 * 03 28 46.6537212648 +30 22 31.231016796 7.080 7.390 7.070     B3III 155 0
3 * 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
4 V* X Per HXB 03 55 23.0777456088 +31 02 45.039836148 6.090 6.840 6.720     O9.5III 1037 0
5 V* V1137 Tau a2* 04 12 51.2508054048 +22 24 48.482221392 6.04 6.31 6.12     B8III 113 0
6 * 62 Tau * 04 23 59.7627483096 +24 18 03.527065188 6.18 6.499 6.337     B3V 237 0
7 HD 29647 * 04 41 08.0448698568 +25 59 33.949206132 9.69 9.22 8.31 7.35 6.60 B9IIIpHgMn 217 0
8 V* AE Aur Or* 05 16 18.1493304816 +34 18 44.344404000 5.48 6.18 5.96     O9.5V 597 1
9 * 3 Gem s*b 06 09 43.9852949424 +23 06 48.472220448 5.33 5.96 5.75     B2.5Ib 234 0
10 HD 46202 bC* 06 32 10.4706981304 +04 57 59.764912343 7.60 8.332 8.269 7.98 7.86 O9.2V 300 0
11 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
12 IC 2177 RNe 07 04 25 -10 27.3           ~ 156 2
13 IRC +10216 C* 09 47 57.40632 +13 16 43.5648           C9,5e 2455 0
14 V* Y CVn C* 12 45 07.8260815656 +45 26 24.926308404 14.03 7.41 4.87 3.12 1.74 C-N5 493 0
15 HD 147888 ** 16 25 24.2915998776 -23 27 36.747568152 6.71 7.05 6.74     B3V 228 0
16 HD 147889 Or* 16 25 24.3163637976 -24 27 56.569805208 8.56 8.73 7.90     B2V 512 1
17 * zet Oph Be* 16 37 09.5400587698 -10 34 01.509742704 1.73 2.58 2.56 2.46 2.50 O9.2IVnn 1908 0
18 NAME Sgr B2 MoC 17 47 20.4 -28 23 07           ~ 2443 1
19 HD 169454 s*b 18 25 15.1937863728 -13 58 42.309359544 7.39 7.61 6.71 5.82 5.13 B1Ia+ 359 1
20 HD 170740 SB* 18 31 25.6939245072 -10 47 45.008376432 5.51 5.96 5.72     B2V+ 210 1
21 HD 172028A * 18 37 56.6190511999 -00 23 09.066384988   8.52 8.01     ~ 56 0
22 HD 172028 SB* 18 37 56.63 -00 23 09.1           B3II 63 0
23 * 20 Aql V* 19 12 40.7117853648 -07 56 22.263784872 5.03 5.47 5.34     B2/3II 240 0
24 HD 183143 s*b 19 27 26.5636061496 +18 17 45.193019136 8.25 8.08 6.86 5.74 4.79 B7Ia+ 464 0
25 Schulte 12 s*b 20 32 40.9572199728 +41 14 29.279036940 16.1 14.45 11.702     B3-4Ia+ 453 0
26 V* V1610 Cyg pA* 21 02 18.27 +36 41 37.0           F5Iae 892 1
27 HD 203938 ** 21 23 50.1690416971 +47 09 52.446883103 7.13 7.54 7.08     B0.5IV 108 0
28 HD 204827 SB* 21 28 57.7592315784 +58 44 23.238427956 8.63 8.74 7.94 7.25 6.76 O9.5IV 372 0
29 HD 206267 Y*O 21 38 57.6195772032 +57 29 20.554016280 5.09 5.83 5.62   5.56 O6.0V((f))+O9:V 520 0
30 HD 207198 Y*? 21 44 53.2791389640 +62 27 38.048647248 5.61 6.25 5.94 5.66 5.49 O8.5II 365 0
31 HD 210121 * 22 08 11.9027578440 -03 31 52.765490316   7.84 7.68     B7II 185 0
32 * lam Cep s*b 22 11 30.5765111040 +59 24 52.154264880 4.55 5.29 5.05 4.77 4.62 O6.5I(n)fp 705 1

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