2008A&A...492..743L


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.04CEST21:04:49

2008A&A...492..743L - Astronomy and Astrophysics, volume 492, 743-755 (2008/12-4)

A CO J=1-0 survey of common optical/uv absorption sightlines.

LISZT H.S.

Abstract (from CDS):

Comparison of optical/uv absorption line data with high-resolution profiles of mm-wave CO emission provides complementary information on the absorbing gas, as toward ζ Oph. Over the past thirty years a wealth of observations of CO and other molecules in optical/uv absorption in diffuse clouds has accumulated for which no comparable CO emission line data exist. To acquire mm-wave J=1-0 CO emission line profiles toward a substantial sample of commonly-studied optical/uv absorption line targets and to compare with the properties of the absorbing gas, especially the predicted emission line strengths. Using the ARO 12 m telescope, we observed mm-wavelength J=1-0 CO emission with spectral resolution R≃3x106 and spatial resolution 1' toward a sample of 110 lines of sight previously studied in optical/uv absorption lines of CO, H2, CH, etc. Interstellar CO emission was detected along 65 of the 110 lines of sight surveyed and there is a general superabundance of CO emission given the distribution of galactic latitudes in the survey sample. Much of the emission is optically thick or very intense and must emanate from dark clouds or warm dense gas near HII regions. Judging from the statistical superabundance of CO emission, seen also in the total line of sight reddening, the OB star optical/uv absorption line targets must be physically associated with the large quantities of neutral gas whose CO emission was detected, in which case they are probably influencing the absorbing gas by heating and/or photoionizing it. This explains why CO/H2 and 12CO/13CO ratios differ somewhat between uv and mm-wave absorption line studies. Because the lines of sight have been preselected to have AV≲1mag, relatively little of the associated material actually occults the targets, making it difficult for CO emission line observations to isolate the foreground gas contribution.

Abstract Copyright:

Journal keyword(s): ISM: molecules - ISM: clouds - astrochemistry

Simbad objects: 115

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Number of rows : 115

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 * kap Cas s*b 00 32 59.9911963 +62 55 54.417374 3.50 4.30 4.16 4.02 3.96 B1Ia 445 0
2 * chi Per * 02 18 04.5844857610 +57 30 58.757945030   7.036 6.0230     G7.0III 156 1
3 HD 21483 * 03 28 46.6535161214 +30 22 31.233721714 7.080 7.390 7.070     B3III 134 0
4 HD 21856 V* 03 32 40.0149906921 +35 27 42.211797214 4.96 5.807 5.900     B1V 170 0
5 * o Per * 03 42 22.6455526 +33 57 54.089323 4.13 4.912 4.972     B0.5V 279 0
6 * omi Per ** 03 44 19.13204 +32 17 17.6929 3.13 3.88 3.83 3.71 3.71 B1III 572 0
7 HD 281159 Y*? 03 44 34.197 +32 09 46.27 9.19 9.21 8.53   7.850 B5V 201 2
8 * 20 Tau PM* 03 45 49.6065620 +24 22 03.886360 3.40 3.80 3.87 3.85 3.90 B8III 397 1
9 * 23 Tau Be* 03 46 19.5738428 +23 56 54.081244 3.70 4.12 4.18   4.16 B6IV(e) 412 2
10 * eta Tau Be* 03 47 29.0765529 +24 06 18.488347 2.44 2.78 2.87 2.84 2.88 B7III 512 1
11 * 27 Tau SB* 03 49 09.7425852 +24 03 12.300277 3.18 3.54 3.63 3.62 3.68 B8III 361 0
12 HD 23840 * 03 49 29.1788675271 +34 55 03.062848071   8.55 8.52     A0 14 0
13 * zet Per V* 03 54 07.9224751 +31 53 01.081262 2.19 2.97 2.85 2.71 2.62 B1Ib 812 0
14 V* X Per HXB 03 55 23.0778791365 +31 02 45.045745259 6.090 6.840 6.720     O9.5III 901 0
15 * eps Per bC* 03 57 51.2320472 +40 00 36.775143 1.71 2.71 2.89 2.96 3.14 B1.5III 494 0
16 * ksi Per ** 03 58 57.9022917 +35 47 27.713205 3.190 4.080 4.060 3.88 3.89 O7.5III(n)((f)) 789 0
17 * 62 Tau * 04 23 59.7629429746 +24 18 03.527426906 6.18 6.499 6.337     B 187 0
18 HD 29647 * 04 41 08.0445234455 +25 59 33.957034408 9.69 9.22 8.31 7.35 6.60 B9IIIpHgMn 186 0
19 HD 283809 * 04 41 24.7241497431 +25 54 48.382917896 12.64 12.0 10.7     F8 41 0
20 HD 283879 * 04 48 14.2479836826 +25 11 44.090542452   12.09 11.1     F8 10 0
21 * alf Cam s*b 04 54 03.0103983 +66 20 33.636467 3.47 4.34 4.29 4.18 4.18 O9Ia 635 1
22 V* AE Aur Or* 05 16 18.1489437436 +34 18 44.347016027 5.48 6.18 5.96     O9.5V 524 1
23 * 23 Ori SB* 05 22 50.0047401166 +03 32 39.976975214 3.99 4.86 5.00 5.05 5.23 B2IV/V 229 0
24 * del Ori Al* 05 32 00.40009 -00 17 56.7424 0.96 2.02 2.41 2.32 2.54 B0III+O9V 742 0
25 * chi Aur SB* 05 32 43.6731178 +32 11 31.275310 4.68 5.15 4.79 4.42 4.15 B4Ib 201 0
26 * lam Ori A Em* 05 35 08.2792540686 +09 56 02.955355445 2.17 3.48 3.47     O8III((f)) 484 0
27 M 42 HII 05 35 17.3 -05 23 28           ~ 3724 0
28 * iot Ori SB* 05 35 25.9819073 -05 54 35.643537 1.45 2.53 2.77     O9IIIvar 729 0
29 * eps Ori s*b 05 36 12.81335 -01 12 06.9089 0.48 1.51 1.69 1.76 1.93 B0Ia 856 0
30 NAME Ori A MoC 05 38 -07.1           ~ 2675 0
31 * zet Ori A ** 05 40 45.527 -01 56 33.26 0.50 1.77 1.88 1.84 2.04 O9.2IbvarNwk 643 0
32 NAME Horsehead Nebula DNe 05 40 59.0 -02 27 30           ~ 445 0
33 NGC 2024 1 Y*O 05 41 37.8540355489 -01 54 36.625596390   13.58 12.17     B0.5V 45 0
34 HD 37903 Em* 05 41 38.3889407943 -02 15 32.476182358 7.32 7.94 7.83 7.64 7.52 B3IV 322 1
35 NAME Ori B MoC 05 41 43.0 -01 54 44           ~ 1164 0
36 * chi02 Ori s*b 06 03 55.1848402263 +20 08 18.441609669 4.24 4.91 4.63 4.32 4.10 B2Ia 428 0
37 * 3 Gem s*b 06 09 43.9850271939 +23 06 48.558943198 5.33 5.96 5.75     B3Ia 217 0
38 * 9 Gem s*b 06 16 58.7058947017 +23 44 27.286451876 6.31 6.70 6.25 5.78 5.38 B3Iab 222 0
39 HD 46202 ** 06 32 10.4728 +04 57 59.818 7.60 8.36 8.19 7.98 7.86 O9.2V 256 0
40 HD 46711 * 06 34 57.0490504701 +02 45 43.213866940 10.09 10.09 9.25 8.45 7.77 B8Ia/ab 59 0
41 HD 47129 SB* 06 37 24.0417003671 +06 08 07.376246443 5.23 6.11 6.06     O8I+O7.5III 368 0
42 * 15 Mon Be* 06 40 58.65963 +09 53 44.7229 3.360 4.400 4.640   4.88 O7V+B1.5/2V 746 0
43 HD 48099 Be* 06 41 59.2307767004 +06 20 43.538696992 5.38 6.32 6.37 6.30 6.35 O5V((f))z+O9:V 277 0
44 HD 52382 * 07 00 39.3386037216 -09 12 10.678042594 6.07 6.76 6.57 6.29 6.19 B0.5Ia 102 0
45 IC 2177 RNe 07 04 25 -10 27.3           ~ 144 2
46 HD 53367 Ae* 07 04 25.5189757244 -10 27 15.613478141 6.81 7.40 6.96 7.92   B0IV/Ve 303 0
47 HD 53974 ** 07 06 40.76672 -11 17 38.4396 4.59 5.44 5.39 6.80   B0IIIn 173 1
48 HD 54662 * 07 09 20.2488124291 -10 20 47.627880802 5.35 6.24 6.21 7.23   O7Vzvar? 316 2
49 * 29 CMa bL* 07 18 40.3796893709 -24 33 31.311819488 3.80 4.80 4.95 4.95 5.08 O7Iafpvar 396 0
50 * tau CMa bL* 07 18 42.4864191 -24 57 15.741299 3.26 4.25 4.40 4.44 4.62 O9II 395 0
51 CCDM J07251-2110AB ** 07 25 07.96647 -21 10 25.8831 6.15 9.10 8.84 7.65   B1Ia 62 1
52 HD 121968 * 13 58 51.1663950090 -02 54 52.325376999 9.160 10.071 10.256 10.330 10.429 B2II 89 0
53 * del Sco SB* 16 00 20.00528 -22 37 18.1431 1.30 2.20 2.32 2.36 2.49 B0.3IV 691 0
54 * bet01 Sco SB* 16 05 26.2319826 -19 48 19.630018 1.68 2.55 2.62 2.60 2.69 B1V 532 0
55 * ome Sco bC* 16 06 48.4269211 -20 40 09.090235 3.10 3.92 3.97 3.91 3.99 B1V 436 0
56 * nu. Sco ** 16 11 59.73568 -19 27 38.5361 3.42 4.05 4.00 3.90 3.87 B2V 354 0
57 * sig Sco bC* 16 21 11.3157134 -25 35 34.051476 2.32 3.02 2.89 1.69 1.58 O9.5(V)+B7(V) 823 0
58 HD 147888 ** 16 25 24.2937199705 -23 27 36.816821785 6.71 7.05 6.74     B3/4V 193 0
59 HD 147889 pr* 16 25 24.3162969787 -24 27 56.570239619 8.56 8.73 7.90     B2III/IV 433 1
60 * rho Oph A * 16 25 35.1182364594 -23 26 49.827436721 4.3 5.22 5.05     B2/3V 388 0
61 * chi Oph Be* 16 27 01.4349892 -18 27 22.493784 3.95 4.71 4.43 3.97 3.73 B2Vne 564 0
62 * i Sco *iN 16 30 12.4751393 -25 06 54.804270 3.93 4.72 4.79 4.85 4.99 B3V 282 1
63 * zet Oph Be* 16 37 09.5390545 -10 34 01.529471 1.73 2.58 2.56 2.46 2.50 O9.2IVnn 1723 2
64 * 67 Oph * 18 00 38.7134668813 +02 55 53.595379606 3.34 3.96 3.93 3.84 3.81 B5I 385 0
65 HD 166734 s*b 18 12 24.6552422490 -10 43 53.059483541 9.36 9.49 8.42 7.33 6.47 O7.5Iabf 157 0
66 * mu. Sgr s*b 18 13 45.8088401 -21 03 31.794073 3.60 4.07 3.85 3.58 3.38 B8Iab(e) 335 0
67 HD 167971 s*b 18 18 05.8954978252 -12 14 33.324312346 7.89 8.27 7.50 6.68 6.279 O8Iaf(n)+O4/5 270 0
68 HD 168076 ** 18 18 36.4221548165 -13 48 02.462547922 8.12 8.72 8.25 7.62 7.21 O4III(f) 180 0
69 HD 168607 s*b 18 21 14.8855350307 -16 22 31.760520819 10.23 9.82 8.28 8.55   B9Iaep 172 1
70 HD 169454 s*b 18 25 15.1938696996 -13 58 42.305035144 7.39 7.61 6.71 5.82 5.13 B1Ia 307 0
71 HD 170074 * 18 25 17.48829 +46 53 07.4551   8.00 7.99     A0 6 1
72 HD 172028 SB* 18 37 56.6193996607 -00 23 09.063879534   8.39 7.92     B3II/III 47 1
73 HD 177989 * 19 07 37.7606873326 -18 43 34.508944384 8.39 9.22 9.34     B2II 83 0
74 * 20 Aql V* 19 12 40.7120091092 -07 56 22.265045969 5.03 5.47 5.34     B2/3II 210 0
75 * ups Sgr Be* 19 21 43.6228354 -15 57 18.062473 4.18 4.71 4.61 4.34 4.21 B2Vp_sh 284 0
76 HD 183143 s*b 19 27 26.5636908636 +18 17 45.191198361 8.25 8.08 6.86 5.74 4.79 B6Ia 407 0
77 * kap Aql * 19 36 53.4495162 -07 01 38.917563 4.050 4.930 4.960 4.90 4.94 B0.5IIIn 323 0
78 HD 192035 * 20 10 49.5883177788 +47 48 47.195114241 7.41 8.26 8.22     B0III-IV(n) 51 1
79 HD 192639 s*b 20 14 30.4275040181 +37 21 13.815126140 6.83 7.46 7.11     O7.5Iabf 268 0
80 * P Cyg s*b 20 17 47.2020844 +38 01 58.552724 4.66 5.24 4.82 4.28 4.02 B1-2Ia-0ep 1130 1
81 HD 229059 s*b 20 21 15.3643765026 +37 24 31.103826768 10.66 10.23 8.70     B2Iabe 89 0
82 HD 195592 s*b 20 30 34.9690436039 +44 18 54.858025184 7.75 7.95 7.08 6.29 5.60 O9.7Ia 197 1
83 BD+40 4220 EB* 20 32 22.4241357648 +41 18 18.942382590 11.32 10.79 9.185     O6.5-7f+O5.5-6f 368 0
84 Schulte 12 s*b 20 32 40.9574572449 +41 14 29.276333992 16.1 14.45 11.702     B3-4Ia+ 358 0
85 BD+40 4227A SB* 20 33 15.0780900764 +41 18 50.478859468 10.42 10.27 8.98 8.03 6.83 O6Ib(fc)+O4.5:III:(fc) 215 0
86 HD 197592 * 20 45 16.7362160321 -15 47 10.416195444   8.68 8.47     A3/4V 4 0
87 * 55 Cyg s*b 20 48 56.2911163453 +46 06 50.883966851 4.83 5.28 4.86 4.41 4.10 B4Ia 470 0
88 HD 198781 * 20 49 17.3908439894 +64 02 32.125046483 5.75 6.472 6.451     B0.5V 91 0
89 HD 199579 SB* 20 56 34.7781372461 +44 55 29.000769871 5.16 6.01 5.96     O6.5V((f))z 338 0
90 * f01 Cyg Be* 20 59 49.5516391039 +47 31 15.378902421 3.77 4.71 4.75 4.62 4.63 B1.5Vnne 465 0
91 HD 201345 * 21 07 55.4153633777 +33 23 49.226678368   7.611 7.764     ON9.2IV 159 0
92 * 68 Cyg SB* 21 18 27.1855667264 +43 56 45.388423736 4.05 4.99 5.00     O7.5IIIn((f)) 359 0
93 HD 203374 Be* 21 19 07.3841340802 +61 51 30.296427340 6.23 6.908 6.674     B0IVpe 117 0
94 HD 203938 * 21 23 50.17520 +47 09 52.3800 7.13 7.54 7.08     B0.5IV 90 1
95 HD 204827 SB* 21 28 57.7601719555 +58 44 23.223287944 8.63 8.74 7.94 7.25 6.76 O9.5IV 296 0
96 * 9 Cep Pu* 21 37 55.2235288899 +62 04 54.993364177 4.49 5.03 4.73 4.42 4.24 B2Ib 286 0
97 HD 206267 SB* 21 38 57.6182747705 +57 29 20.557311013 5.09 5.83 5.62   5.56 O6.0V((f))+O9:V 451 0
98 HD 206773 Be* 21 42 24.1855487400 +57 44 09.791063937 6.30 7.10 6.87     B0V:pe 148 0
99 HD 207198 * 21 44 53.2790298387 +62 27 38.042162728 5.61 6.25 5.94 5.66 5.49 O8.5II 321 0
100 HD 207308 * 21 45 42.3667056382 +62 18 30.019920458 7.11 7.74 7.49     B0.5V 56 0
101 HD 207538 * 21 47 39.7898466603 +59 42 01.344202478 7 7.55 7.30     O9.7IV 177 1
102 HD 208440 * 21 53 53.2977180267 +62 36 00.750119137 7.24 7.93 7.91     B1V 83 0
103 HD 209339 ** 22 00 39.2641276076 +62 29 16.064937019 5.9 8.73 8.51 7.61   O9.7IV 168 0
104 * 19 Cep * 22 05 08.7884887056 +62 16 47.323982519 4.36 5.19 5.11 4.95 4.92 O9Ib 362 0
105 HD 210121 * 22 08 11.9025501667 -03 31 52.770012247   7.84 7.68     B7II 148 0
106 * lam Cep s*b 22 11 30.5750839949 +59 24 52.147736074 4.55 5.29 5.05 4.77 4.62 O6.5I(n)fp 646 1
107 HD 216532 V* 22 52 30.5564449825 +62 26 25.946675282 8.06 8.46 8.0     O8.5V(n) 130 0
108 HD 216898 * 22 55 42.4581895079 +62 18 22.820044865 8.10 8.58 8.04     O9V 140 0
109 HD 217035 bC* 22 56 30.907 +62 52 06.99 7.66 8.20 7.7     B0.5Vn+B0.5V 93 0
110 V* NY Cep Al* 22 58 39.7946496357 +63 04 37.738297438 7.23 7.74 7.4     B5 136 0
111 * omi And Be* 23 01 55.2645930 +42 19 33.533383 3.00 3.53 3.62 3.61 3.69 B6IV/V_sh 411 0
112 * 1 Cas * 23 06 36.8178557 +59 25 11.135698 3.93 4.771 4.840     B0.5III 228 0
113 HD 218915 s*b 23 11 06.9480376287 +53 03 29.651927910 6.32 7.22 7.20     O9.2Iab 184 1
114 BD+63 1964 * 23 17 21.5627349678 +64 07 16.166348285 8.79 9.05 8.5     B0 75 0
115 * sig Cas ** 23 59 00.53819 +55 45 17.7430           B1V 142 0

    Equat.    Gal    SGal    Ecl

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2020.07.04-21:04:49

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