1999A&A...347..235K

Query : 1999A&A...347..235K

1999A&A...347..235K - Astronomy and Astrophysics, volume 347235-242 (1999/7-1)

On the relation between diffuse interstellar bands and simple molecular species.

KRELOWSKI J., EHRENFREUND P., FOING B.H., SNOW T.P., WESELAK T., TUAIRISG S.O., GALAZUTDINOV G.A. and MUSAEV F.A.

Abstract (from CDS):

We present observations of the major diffuse interstellar bands (DIBs) at 5780 and 5797Å as well as literature data and our own observations of the violet lines of CH and CH+, in the lines of sight toward some 70stars representing various degrees of the interstellar reddening. The correlations are shown and discussed in the context of indicators such as far-UV extinction parameters and neutral molecular abundances. The results show that the DIBs in question (λλ5797 and 5780) both probably form in diffuse cloud interiors, in a related regime where CH and H2 form. The ratio of the two DIBs correlates with CH abundance, confirming that the λ5797 carrier is favoured in enhanced molecular gas regions over the λ5780 carrier. The ratio of the two DIBs correlates poorly with CH+ abundance. Our compilation of observational data also suggests that the DIB ratio may be equally useful as a cloud type indicator as is RV, the ratio of total to selective extinction, and much more readily observed.

Abstract Copyright: ∼

Journal keyword(s): ISM: dust, extinction - ISM: molecules - infrared: ISM: lines and bands

Simbad objects: 68

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Number of rows : 68
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 * kap Cas s*b 00 32 59.9918836206 +62 55 54.413126128 3.50 4.30 4.16 4.02 3.96 BC0.7Ia 474 0
2 * 10 Per s*b 02 25 16.0283450208 +56 36 35.354429280 5.95 6.56 6.26 5.93 5.74 B2Ia 248 0
3 HD 15570 Y*O 02 32 49.4207394600 +61 22 42.089384892 8.40 8.80 8.11 7.41 6.86 O4If 316 0
4 HD 15629 Y*O 02 33 20.5873992264 +61 31 18.188762844 8.23 8.85 8.42     O4.5V((fc)) 255 0
5 * o Per * 03 42 22.6459308614 +33 57 54.093701142 4.13 4.912 4.972     B0.5V 315 0
6 * omi Per SB* 03 44 19.1337687984 +32 17 17.687367960 3.13 3.91 3.91 3.71 3.71 B1III 628 0
7 HD 281159 Y*O 03 44 34.1873929 +32 09 46.137563 9.19 9.21 8.53 8.85 7.850 B5V 234 0
8 IC 348 12 Or* 03 44 35.3610354384 +32 10 04.591121088       10.06 9.098 A2 70 0
9 * 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
10 V* X Per HXB 03 55 23.0777456088 +31 02 45.039836148 6.090 6.840 6.720     O9.5III 1037 0
11 * 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
12 HD 25639 * 04 07 51.3928669512 +62 19 48.385984944 6.87 7.24 6.86     B0III 130 0
13 HD 27311 * 04 19 30.1582728576 +19 56 52.129077432   8.05 7.85     A0 16 0
14 * 62 Tau * 04 23 59.7627483096 +24 18 03.527065188 6.18 6.499 6.337     B3V 237 0
15 * alf Cam s*b 04 54 03.0113886719 +66 20 33.633625509 3.47 4.34 4.29 4.18 4.18 O9Ia 675 1
16 V* AE Aur Or* 05 16 18.1493304816 +34 18 44.344404000 5.48 6.18 5.96     O9.5V 597 1
17 * lam Ori A Em* 05 35 08.2760807112 +09 56 02.991326316 2.17 3.48 3.47     O8III((f)) 527 0
18 * 139 Tau s*b 05 57 59.6569390499 +25 57 14.083803544 3.82 4.76 4.82 4.76 4.87 B1Ia 290 0
19 * chi02 Ori s*b 06 03 55.1843706432 +20 08 18.428141364 4.24 4.91 4.63 4.32 4.10 B2Ia 465 0
20 * 3 Gem s*b 06 09 43.9852949424 +23 06 48.472220448 5.33 5.96 5.75     B2.5Ib 234 0
21 HD 47129 SB* 06 37 24.0420854544 +06 08 07.369104444 5.23 6.11 6.06     O8I+O7.5III 420 0
22 HD 53974 ** 07 06 40.76672 -11 17 38.4396 4.59 5.44 5.39 6.80   B0IIIn 186 1
23 * del Sco SB* 16 00 20.00528 -22 37 18.1431 1.30 2.20 2.32 2.36 2.49 B0.3IV 776 0
24 * bet01 Sco bC* 16 05 26.2319826 -19 48 19.630018 1.68 2.55 2.62 2.60 2.69 B1V 577 0
25 * nu. Sco ** 16 11 59.73568 -19 27 38.5361 3.42 4.05 4.00 3.90 3.87 B2V 404 0
26 * 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
27 * rho Oph A SB* 16 25 35.1185711280 -23 26 49.831640736 4.3 5.22 5.05     B1V 444 0
28 * chi Oph Be* 16 27 01.4355697915 -18 27 22.499961252 3.95 4.71 4.43 3.97 3.73 B2Vne 624 0
29 * mu. Nor s*b 16 34 05.0193637737 -44 02 43.120603946 4.05 4.99 4.94 6.36   O9.7Iab 286 0
30 * 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
31 HD 151804 s*b 16 51 33.7218052272 -41 13 49.919519496 4.45 5.29 5.22     O8Iaf 389 0
32 HD 152408 WR* 16 54 58.5051071856 -41 09 03.093075612 5.17 5.92 5.77 7.00   O8Iape 388 0
33 HD 154445 * 17 05 32.2587926880 -00 53 31.437713328 5.10 5.73 5.61 5.39 5.34 B1V 276 0
34 V* V2052 Oph bC* 17 56 18.4001168880 +00 40 13.273317228 5.28 5.874 5.820     B3III 222 0
35 * 67 Oph s*b 18 00 38.7157893000 +02 55 53.633402904 3.34 3.96 3.93 3.84 3.81 B4Ib-II 422 0
36 * mu. Sgr s*b 18 13 45.8088401 -21 03 31.794073 3.60 4.07 3.85 3.58 3.38 B8Iab(e) 354 0
37 * 15 Sgr s*b 18 15 12.9063291264 -20 43 41.767600368 4.64 5.42 5.37 5.27 5.19 O9.7Iab 268 0
38 * 16 Sgr SB* 18 15 12.9690278832 -20 23 16.691046360 5.25 6.05 6.02 5.94 5.86 O9.5III 198 0
39 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
40 HD 170740 SB* 18 31 25.6939245072 -10 47 45.008376432 5.51 5.96 5.72     B2V+ 210 1
41 * 20 Aql V* 19 12 40.7117853648 -07 56 22.263784872 5.03 5.47 5.34     B2/3II 240 0
42 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
43 * kap Aql * 19 36 53.4488871022 -07 01 38.924816492 4.050 4.930 4.960 4.90 4.94 B0.5IIIn 354 0
44 HD 185859 Em* 19 40 28.3246282752 +20 28 37.474738716 6.290 6.890 6.520 6.18 5.92 B3I+ 145 0
45 HD 186745 sg* 19 45 24.3491996232 +23 56 34.374919992 8.00 7.96 7.03     B8Ia 108 0
46 V* V1765 Cyg SB* 19 48 50.5979466384 +33 26 14.222537016 5.99 6.578 6.463     B0.5II 151 0
47 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
48 HD 228712 s*b 20 16 35.5612223544 +40 53 08.142908172 9.86 9.81 8.67     B0.5Ia 51 0
49 * P Cyg s*b 20 17 47.2019733389 +38 01 58.549132671 4.66 5.24 4.82 4.28 4.02 B1-2Ia-0ep 1200 1
50 HD 193322 ** 20 18 06.98820 +40 43 55.5001 5.17 5.94 5.84 5.69 5.68 O9IV(n)+B1.5V 285 0
51 HD 194279 s*b 20 23 18.1647782064 +40 45 32.598481500 8.01 8.04 7.01 5.98 5.17 B2Ia 200 0
52 HD 194839 s*b 20 26 21.5475791160 +41 22 45.646427280 8.40 8.49 7.49     B0.5Ia 120 0
53 BD+40 4220 s*b 20 32 22.4238071594 +41 18 18.942475904 11.32 10.61 9.185     O7Iafep 414 0
54 BD+40 4227A SB* 20 33 15.0781182864 +41 18 50.479292556 10.42 10.27 8.98 8.03 6.83 O6Ib(fc)+O4.5:III:(fc) 253 0
55 * 55 Cyg s*b 20 48 56.2915921440 +46 06 50.883645024 4.83 5.28 4.86 4.41 4.10 B2.5Ia 506 0
56 HD 199579 Y*O 20 56 34.7779063080 +44 55 29.000891928 5.16 6.01 5.96     O6.5V((f))z 375 0
57 * 68 Cyg SB* 21 18 27.1862219256 +43 56 45.399147864 4.05 4.99 5.00     O7.5IIIn((f)) 383 0
58 * 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
59 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
60 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
61 * 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
62 * 15 Cep ** 22 03 53.8578633480 +59 48 52.467238584 6.31 6.862 6.708     B1V 61 0
63 * 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
64 * 14 Lac EB* 22 50 21.7785565224 +41 57 12.221400240 5.49 5.961 5.910     B4III 155 0
65 * 1 Cas * 23 06 36.8177774777 +59 25 11.135356051 3.93 4.771 4.840     B0.5III 254 0
66 BD+63 1964 s*b 23 17 21.5626507224 +64 07 16.165682868 8.79 9.05 8.5     B0Iab 91 0
67 HD 224055 Em* 23 54 42.1155968568 +61 50 20.036841432 7.67 7.846 7.233     B3Ia 96 0
68 * sig Cas ** 23 59 00.53819 +55 45 17.7430           B1V 154 0

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