2008A&A...484..381W

Query : 2008A&A...484..381W

2008A&A...484..381W - Astronomy and Astrophysics, volume 484381-388 (2008/6-3)

The relation between CH and CN molecules and carriers of 5780 and 5797 diffuse interstellar bands.

WESELAK T., GALAZUTDINOV G.A., MUSAEV F.A. and KRELOWSKI J.

Abstract (from CDS):

Optical absorption bands of the interstellar CN (near 3875Å) and CH molecules (the violet and blue ones near 4300 and 3886Å, respectively) were applied to determine the column densities of these two radicals in a statistically meaningful sample of 84 reddened OB stars. Equivalent widths of the major 5780 and 5797 diffuse bands (DIBs) were measured along the lines of sight toward the same stars in spectra acquired using four echelle spectrographs situated in both the northern and southern hemispheres. The mutual relation between abundances of CH and CN molecules shows a large scatter; and especially the CN molecule abundance varies strongly from cloud to cloud. The carriers of the major 5780 and 5797 DIBs seem to be spatially correlated with column densities of CH rather than of the CN molecule. This is most likely true in the case of a narrower feature: the 5797 DIB correlates with CH column density better than 5780 does. The correlations do suggest that the DIB carriers are likely hydrocarbons. They apparently occupy molecular clouds since the H2 abundance is closely related to that of methylidyne (CH), as has already been demonstrated.

Abstract Copyright: ∼

Journal keyword(s): ISM: molecules

Simbad objects: 86

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Number of rows : 86
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 12953 sg* 02 08 40.5790963584 +58 25 24.970714608 6.28 6.29 5.68 5.09 4.59 A1Ia 198 0
2 HD 13854 s*b 02 16 51.7162480872 +57 03 18.882144756 6.10 6.76 6.48 6.14 5.95 B1Iab 217 0
3 HD 14143 s*b 02 19 13.9420338600 +57 10 09.234950232 6.71 7.16 6.7000     B2Ia 208 0
4 HD 20041 * 03 15 47.9705004096 +57 08 26.243459556 6.61 6.52 5.79     A0Ia 146 1
5 HD 21291 s*b 03 29 04.1328896160 +59 56 25.201164588 4.40 4.63 4.22 3.84 3.46 B9Ia 298 0
6 * o Per * 03 42 22.6459308614 +33 57 54.093701142 4.13 4.912 4.972     B0.5V 315 0
7 * omi Per SB* 03 44 19.1337687984 +32 17 17.687367960 3.13 3.91 3.91 3.71 3.71 B1III 628 0
8 * 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
9 V* X Per HXB 03 55 23.0777456088 +31 02 45.039836148 6.090 6.840 6.720     O9.5III 1037 0
10 HD 25638 EB* 04 07 49.2849421032 +62 19 58.626896088 6.82 7.26 6.93     O9.5Vn 227 1
11 * 62 Tau * 04 23 59.7627483096 +24 18 03.527065188 6.18 6.499 6.337     B3V 237 0
12 V* AE Aur Or* 05 16 18.1493304816 +34 18 44.344404000 5.48 6.18 5.96     O9.5V 597 1
13 NAME Ori I As* 05 38 -02.8           ~ 653 0
14 HD 45314 Be* 06 27 15.7784072112 +14 53 21.212913660 5.91 6.79 6.64     O9:npe 183 0
15 HD 46150 Y*O 06 31 55.5205071744 +04 56 34.296516096 6.03 6.86 6.73 6.50 6.41 O5V((f))z 413 0
16 HD 46223 Y*O 06 32 09.3068103600 +04 49 24.705695568 6.73 7.50 7.28 6.95 6.79 O4V((f)) 406 0
17 HD 46573 SB* 06 34 23.5692982800 +02 32 02.944339980 7.61 8.27 7.93     O7V((f))z 143 0
18 HD 47432 Pu* 06 38 38.1872868432 +01 36 48.675208608 5.67 6.44 6.31 6.11 6.04 O9.7Ib 194 1
19 HD 48434 s*b 06 43 38.6456583720 +03 55 57.109225980 4.99 5.88 5.90     B0III 166 0
20 HD 75149 s*b 08 46 30.5469120768 -45 54 45.019158300 5.25 5.677 5.459 6.77   B5Iab 115 0
21 HD 80558 s*b 09 18 42.3559197816 -51 33 38.338564212 6.15 6.47 5.93 5.36 4.94 B6Ia 124 0
22 V* V661 Car SB* 10 44 00.3711575208 -59 52 27.521778900 7.60 8.31 8.04 8.75   O6.5III(f) 148 0
23 HD 94367 sg* 10 52 30.8460074448 -57 14 25.458038304 4.87 5.41 5.25     A0Ia 63 0
24 HD 99264 * 11 24 11.1271526712 -72 15 23.789086920 5.08 5.585 5.583     B2V 90 0
25 HD 99872 ** 11 28 18.41395 -72 28 26.3265 5.83 6.221 6.115     B3V 85 0
26 HD 101191 SB* 11 38 12.1672877688 -63 23 26.799724320 7.69 9.32 9.36 9.29   O8V 86 0
27 HD 101205 ** 11 38 20.36114 -63 22 21.8889 5.64 6.53 6.54 7.41   O6V 164 0
28 HD 101223 * 11 38 22.7710327032 -63 12 02.800069956 8.12 9.55 9.51 9.41   O8V 84 0
29 * tet02 Cru SB* 12 04 19.2200768232 -63 09 56.516665140 4.02 4.613 4.716     B3V 106 1
30 HD 110432 HXB 12 42 50.2663572384 -63 03 31.052981412 4.79 5.58 5.31     B0.5IVpe 334 0
31 HD 116072 EB* 13 22 35.8501250304 -60 58 19.594661016   6.162 6.153     B3/5 56 0
32 * b Sco * 15 50 58.7444628720 -25 45 04.658676984 3.84 4.552 4.635     B1.5Vn 305 0
33 * sig Sco bC* 16 21 11.3157134 -25 35 34.051476 2.32 3.02 2.89 1.69 1.58 B1III+B1:V 898 0
34 HD 147888 ** 16 25 24.2915998776 -23 27 36.747568152 6.71 7.05 6.74     B3V 228 0
35 HD 147889 Or* 16 25 24.3163637976 -24 27 56.569805208 8.56 8.73 7.90     B2V 512 1
36 * rho Oph B * 16 25 35.0324153856 -23 26 46.923516744   5.26 6.66     B2V 137 0
37 HD 147932 ** 16 25 35.0813422344 -23 24 18.806143896 7.24 7.59 7.27     B7V 142 0
38 * chi Oph Be* 16 27 01.4355697915 -18 27 22.499961252 3.95 4.71 4.43 3.97 3.73 B2Vne 624 0
39 HD 148379 s*b 16 29 42.3277745448 -46 14 35.630932596 5.51 5.95 5.37 4.85 4.39 B2Iab 191 0
40 HD 148688 s*b 16 31 41.7687715992 -41 49 01.732565676 5.16 5.78 5.39 5.05 4.70 B1Iaeqp 170 0
41 HD 148937 SB* 16 33 52.3869185520 -48 06 40.476418740 6.49 7.12 6.71 7.61   O6f?p 417 1
42 HD 149404 s*b 16 36 22.5628499784 -42 51 31.902127776 5.23 5.88 5.52 6.90   O8.5Iab(f)p 265 0
43 * 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
44 HD 150136 SB* 16 41 20.4155898816 -48 45 46.730465028 4.98 5.78 5.65 6.93   O3.5-4III(f*)+O6IV 201 0
45 HD 150168 s*b 16 41 40.2261742224 -49 39 05.588433432 4.88 5.67 5.68 5.64 5.60 B1Iab/Ib 94 0
46 HD 152076 Y*O 16 53 07.3002035928 -41 43 45.479256528 7.98 9.10 8.90 9.36   B0III 57 0
47 HD 152219 SB* 16 53 55.6078109256 -41 52 51.496403268 6.950 7.705 7.569   7.267 O9.5III(n) 114 0
48 HD 152235 s*b 16 53 58.8528412848 -41 59 39.577848180 6.47 6.92 6.38 5.84 5.42 B0.5Ia 205 0
49 * zet01 Sco s*b 16 53 59.7271314888 -42 21 43.307334468 4.80 5.31 4.79 4.32 3.86 B1.5Ia+ 390 0
50 HD 152218 Y*O 16 53 59.9905195488 -41 42 52.817214240 7.02 7.78 7.570   7.243 O9IV+B0:V: 160 0
51 HD 152234 s*b 16 54 01.8373785611 -41 48 22.987399147 4.92 5.64 5.45     B0.5Ia 201 0
52 HD 152233 SB* 16 54 03.5909222280 -41 47 29.841281484 5.93 6.72 6.59     O6II(f) 202 0
53 HD 152246 SB* 16 54 05.2976157264 -41 04 46.117795944 6.69 7.45 7.29 8.19   O9IV 132 1
54 HD 152249 s*b 16 54 11.6395658856 -41 50 57.295111524 5.91 6.65 6.45     OC9Iab 254 0
55 CD-41 11037 SB* 16 54 13.2253067352 -41 50 32.518100184 7.21 8.08 7.90     O9IV 78 0
56 HD 326329 Y*O 16 54 14.1033282720 -41 50 08.503512720 8.141 9.183 9.013 9.477 8.460 O9.7V 78 0
57 HD 326331 SB* 16 54 25.9691286216 -41 49 55.768191852 6.886 7.678 7.497   7.143 O8IVn((f)) 87 0
58 HD 152314 ** 16 54 32.0048577720 -41 48 18.848961036 7.256 7.974 7.749 9.01 7.446 O9IV 113 0
59 V* V861 Sco SB* 16 56 35.9776521336 -40 49 24.443276592 5.86 6.51 6.22 5.92 5.64 B2Iab/b 229 0
60 * k Sco s*b 17 04 49.3516568736 -34 07 22.541680380 4.44 5.13 4.87 4.59 4.42 B2Iab 158 0
61 HD 154445 * 17 05 32.2587926880 -00 53 31.437713328 5.10 5.73 5.61 5.39 5.34 B1V 276 0
62 HD 154368 s*b 17 06 28.3687759224 -35 27 03.760593156 6.10 6.63 6.13 7.12   O9.5Iab 316 0
63 HD 163800 * 17 58 57.2584170624 -22 31 03.165347496 6.61 7.27 7.00 6.68 6.49 O7.5III((f)) 161 0
64 * 9 Sgr Y*O 18 03 52.4450051016 -24 21 38.632254012 5.08 5.97 5.97 5.72 5.70 O4V((f))z 563 0
65 HD 165688 WR* 18 07 56.9609461704 -19 23 56.863324824 10.46 10.31 9.87 9.85   WN5-6b 162 0
66 HD 166734 s*b 18 12 24.6551425392 -10 43 53.060750040 9.36 9.49 8.42 7.33 6.47 O7.5Iabf 193 0
67 HD 168075 Y*O 18 18 36.0418343184 -13 47 36.449731536 8.62 9.22 8.77 9.45   O7V(n)((f))z 149 0
68 BD-13 4927 Y*O 18 18 40.0938541704 -13 45 18.603231696 10.12 10.14 9.48 9.71   O7II(f) 82 0
69 BD-13 4930 Y*O 18 18 52.6749052848 -13 49 42.634556148 9.04 9.71 9.45   8.968 O9.7V 116 0
70 HD 168137 Y*O 18 18 56.1894798360 -13 48 31.092549588 8.72 9.36 8.94 9.55   O8Vz 131 0
71 HD 168607 s*b 18 21 14.8856951904 -16 22 31.763755236 10.23 9.82 8.28 8.55   B9Ia+ 196 1
72 HD 168625 s*b 18 21 19.5484021368 -16 22 26.075142156 10.15 9.78 8.37 8.76   B8Ia+ 293 2
73 * 20 Aql V* 19 12 40.7117853648 -07 56 22.263784872 5.03 5.47 5.34     B2/3II 240 0
74 * kap Aql * 19 36 53.4488871022 -07 01 38.924816492 4.050 4.930 4.960 4.90 4.94 B0.5IIIn 354 0
75 HD 190603 s*b 20 04 36.1742825304 +32 13 06.953333016 5.73 6.19 5.65 5.13 4.71 B1.5Ia+ 357 0
76 * 68 Cyg SB* 21 18 27.1862219256 +43 56 45.399147864 4.05 4.99 5.00     O7.5IIIn((f)) 383 0
77 HD 203938 ** 21 23 50.1690416971 +47 09 52.446883103 7.13 7.54 7.08     B0.5IV 108 0
78 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
79 * 9 Cep s*b 21 37 55.2241394424 +62 04 54.990376788 4.49 5.03 4.73 4.42 4.24 B2Ib 315 0
80 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
81 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
82 HD 207538 * 21 47 39.7896725544 +59 42 01.348647696 7 7.55 7.30     O9.7IV 213 1
83 * 13 Cep s*b 21 54 53.1538880928 +56 36 40.415024952 6.50 6.52 5.80 5.12 4.52 B7Iab 195 0
84 * 14 Cep SB* 22 02 04.5726270264 +58 00 01.309758516 4.77 5.551 5.542     O9IV(n)var+B1:V: 262 0
85 * 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
86 * 26 Cep s*b 22 27 05.3104700184 +65 07 56.160347196 5.24 5.806 5.515     B0.5Ib 157 0

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