2023MNRAS.525.2820K

Query : 2023MNRAS.525.2820K

2023MNRAS.525.2820K - Mon. Not. R. Astron. Soc., 525, 2820-2833 (2023/October-3)

Cold diffuse interstellar medium of Magellanic Clouds: I. HD molecule and cosmic-ray ionization rate.

KOSENKO D.N. and BALASHEV S.A.

Abstract (from CDS):

HD molecule is one of the most abundant molecule in the Universe and due to its sensibility to the conditions in the medium, it can be used to constrain physical parameters in the medium where HD resides. Lately, we have shown that HD abundance can be enhanced in the low-metallicity medium. Large and Small Magellanic Clouds give us an opportunity to study low-metallicity galaxies in detail towards different sightlines due to their proximity to our Galaxy. We revisited Far Ultraviolet Spectroscopic Explorer (FUSE) space telescope archival spectra towards bright stars in Magellanic Clouds to search for HD molecules, associated with the medium of these galaxies. We reanalysed H2 absorption lines and constrained HD column density at the positions of H2 components. We detected HD towards 24 sightlines (including 19 new detections). We try to measure cosmic ray ionization rate for several systems using measured N(HD)/N(H2), and in most cases get loose constraints due to insufficient quality of the FUSE spectra.

Abstract Copyright: © 2023 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): cosmic rays - ISM: molecules - galaxies: ISM

Simbad objects: 95

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Number of rows : 95
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 AzV 6 Ev* 00 45 18.198504 -73 15 23.54220   13.436 13.405 13.337   O9III 36 0
2 LIN 78 HXB 00 46 32.6338987968 -73 06 05.564426436 12.53 13.59 13.827   13.999 O3/4V 49 0
3 SK 10 s*b 00 46 42.1591125672 -73 24 55.494317340 11.903 12.984 13.176   13.35 O6.5III(f) 56 0
4 LHA 115-S 6 s*b 00 46 55.0295765376 -73 08 34.136808252 12.14 13.02 12.91   12.52 BI[e] 100 1
5 SK 13 s*b 00 47 12.2164410744 -73 06 33.111710784   12.52 12.48     B1.5Ia 83 0
6 BBB SMC 259 s*b 00 47 38.7409708152 -73 07 48.851948496   12.17 12.24     B3Ia 43 0
7 BBB SMC 266 s*b 00 47 50.0484011088 -73 08 21.054056928   12.35 12.55 12.36   O6I(f)+O7.5 78 0
8 SK 25 * 00 48 27.6859775448 -73 26 48.825498408   12.99 13.02 12.84   B0 18 0
9 AzV 47 * 00 48 51.4911440520 -73 25 58.537753356 12.263 13.314 13.496   14.00 O8III((f)) 45 0
10 SK 30 * 00 49 57.8096462640 -73 40 06.181103820   12.96 12.72     B2 5 0
11 BBB SMC 1 * 00 50 17.2067283312 -72 53 30.259838832 12.093 13.144 13.326 13.39 13.47 OC7III 52 0
12 LIN 156 s*b 00 50 32.4050818488 -72 52 36.441355908 11.553 12.604 12.756   12.89 O5.5I(f) 58 0
13 LIN 160 WR* 00 50 43.4248908624 -73 27 05.815089828 12.363 13.304 13.426   13.55 WN6 58 0
14 AzV 80 * 00 50 43.8139294080 -72 47 41.547243120 12.22 13.24 13.376   13.59 O6IIInn(f)p 42 0
15 AzV 95 * 00 51 21.6002057448 -72 44 14.875230300 12.67 13.64 13.83   13.95 O7.5III((f)) 53 0
16 AzV 104 s*b 00 51 38.4279675528 -72 48 06.081643404 12.053 13.064 13.226   13.57 B0.5Ia 43 0
17 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
18 AzV 170 s*b 00 55 42.4299731736 -73 17 30.523500780 12.86 13.82 14.11   14.25 O9.7I 41 0
19 SK 64 * 00 56 38.0776029912 -72 36 35.278875108 12.61 13.50 13.586   13.74 B1IIw 22 0
20 AzV 207 * 00 58 33.1896798552 -71 55 46.721984016 12.99 14.13 14.35   14.58 O7V((f))z 48 0
21 AzV 208 Em* 00 58 33.3353621976 -72 39 32.202924444 13.01 14.05 14.15   13.92 O9 19 0
22 SK 73 s*b 00 58 35.7838206672 -72 16 25.018020660 11.73 12.63 12.66   12.69 B1Iab-Ib 38 0
23 SK 76 s*b 00 58 55.6254525024 -72 32 08.467356804 11.64 12.65 12.75   12.84 BN0Ia 52 0
24 AzV 216 EB* 00 58 59.1397025928 -72 44 34.125224352 13.11 14.15 14.32 14.49 14.56 B0IIw 43 0
25 NGC 346 Cl* 00 59 04.4000 -72 10 39.000           ~ 547 0
26 SK 84 * 01 00 06.7253852112 -72 47 19.124459916 12.58 13.71 13.91   14.16 O6.5V 51 0
27 RMC 18 s*b 01 00 06.8830919184 -72 13 57.371461032   11.7 11.5     B1Ia 76 0
28 AzV 261 SB* 01 00 58.7194191624 -72 30 50.235757380 12.93 13.90 14.01   13.98 B2(Ib)e 29 0
29 SK 95 s*b 01 01 09.3913651632 -72 27 28.543237812 11.47 12.48 12.61   12.67 B0.7Ia 36 0
30 AzV 304 * 01 02 21.4823289456 -72 39 14.587308576   14.66 14.77     B0.5V 57 0
31 SK 116 s*b 01 04 55.7398901040 -72 46 48.146591280 11.413 12.494 12.646     O9.2Iab 43 0
32 AzV 374 * 01 05 01.8635159352 -72 26 53.789152056 12.04 12.96 13.10   13.224 B2Ib 17 0
33 SK 132 s*b 01 07 40.3905611664 -72 51 00.061708428 12.08 13.13 13.31 13.30 13.45 O9.5II(n) 49 0
34 AzV 435 * 01 08 17.9083159848 -71 59 54.357974016 12.93 13.98 14.11   13.97 O3V((f*)) 22 0
35 AzV 440 * 01 08 56.0209984488 -71 52 46.695754200 13.42 14.30 14.58   14.76 O7.5III((f)) 30 0
36 SK 150 s*b 01 13 01.8742585512 -72 45 48.441989592 11.593 12.564 12.676   11.42 B1.5Ia 41 0
37 Dachs SMC 3-10 EB* 01 13 42.4497160176 -73 17 29.516706528 12.49 13.54 13.48 13.72 13.54 O2-3V 45 0
38 SK 155 s*b 01 14 50.2614192144 -73 20 17.851206156 11.35 12.33 12.48     O9Iab(ff) 63 0
39 LIN 508 Em* 01 14 55.0195828176 -72 21 38.101370184 13.26 14.41 14.3   14.25 O4-7Ve 22 0
40 SK 156 s*b 01 15 28.6131066624 -73 19 50.059080372 10.90 11.85 11.93     B1.5Ia 37 0
41 SK 157 * 01 15 52.196 -73 20 48.32 11.13 12.97 13.66     O9.5 42 0
42 SK 159 s*b 01 15 58.8782034384 -73 21 24.351532740 10.80 11.77 11.90     B0.2Ia 84 0
43 SK 160 HXB 01 17 05.1457288392 -73 26 36.014808156 12.23 13.00 13.15   13.17 O9.7Ia+ 918 0
44 AzV 491 EB* 01 17 16.8924527160 -73 10 01.154380674 13.71 14.54 14.74   15.01 B1-3(III) 13 0
45 SK 169 * 01 22 11.2189709856 -73 26 51.880504956   13.36 13.53     B0.5III 20 0
46 WDG 1 s*b 01 41 42.0683863272 -73 50 38.183979624   11.86 11.84     B1.5Ia 74 0
47 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
48 NAME Magellanic Bridge HI 03 11 -77.5           ~ 522 1
49 HD 270754 s*b 04 47 04.4509965192 -67 06 53.121123648 10.351 11.219 11.26   10.992 B1.5Ia 92 0
50 HD 268605 s*b 04 50 18.9258130824 -67 39 38.036838240 10.244 11.2 11.377   11.322 O9.5/B0Ia 99 0
51 HD 268623 s*b 04 52 19.0947780648 -66 43 53.320001052 10.709 11.51 11.61   11.482 B2Ia 48 0
52 HD 32109 WR* 04 55 31.3415815464 -67 30 02.683346940 12.893 13.46 13.81 13.95 13.512 WN4b 81 0
53 SK -66 18 Pu* 04 55 59.8226723496 -65 58 29.732367612 12.394 13.294 13.467   13.725 O6.5III((f)) 22 0
54 BRRG 75 EB* 04 56 43.2756150816 -66 25 02.492537664           ~ 15 0
55 PGMW 3073 * 04 56 43.334 -66 24 54.55 12.895 14.734 13.868   14.181 O6.5V 13 0
56 PGMW 3102 * 04 56 45.3652438416 -66 24 46.424829456 12.601 13.319 13.416   13.502 O7V 14 0
57 PGMW 3120 * 04 56 46.7984540280 -66 24 46.862515368 11.700 12.496 12.466   12.464 O5.5V((f*)) 37 0
58 BI 39 s*b 04 56 50.5859606808 -66 24 35.122236480 11.691 12.356 12.438   10.895 B1Ia 18 0
59 BI 42 Ro* 04 57 00.8846599752 -66 24 25.206714576 11.998 12.768 12.896 13.210 12.663 O8V 33 0
60 HD 268732 s*b 04 57 04.4395141656 -66 34 38.571040380 10.652 11.494 11.587     BC1Iab 60 0
61 HD 268867 * 04 57 48.9012688536 -69 52 22.499183784 10.469 11.392 11.399   11.468 B2Ia 35 0
62 SK -65 21 s*b 05 01 22.2741446472 -65 41 47.884690176 11.119 12.08 12.70   12.373 O9.7Iab 41 0
63 HD 33133 WR* 05 03 08.9126630616 -66 40 57.492259824   12.46 12.63 12.85   WN7h 99 0
64 SK -70 79 * 05 06 37.2738884832 -70 29 24.192350448 11.703 12.704 12.766   12.723 B0III 27 0
65 HD 269050 s*b 05 07 20.4218668824 -68 32 08.569322196 10.593 11.581 11.54 11.46 11.55 B0Ia(e?) 89 0
66 SK -71 8 * 05 07 23.2588955184 -71 11 53.964381372 12.243 12.995 13.156   13.299 B0II: 21 0
67 HD 269314 * 05 17 05.6370489840 -70 19 23.041514280 11.243 12.344 12.376   12.431 B0I 17 0
68 HD 35517 WR* 05 19 16.3515868608 -69 39 20.012864004 11.193 11.754 11.58 12.36 11.953 WC4+O5/6III/V+O 92 0
69 HD 269445 WR* 05 22 59.7855849168 -68 01 46.635948408 10.79 11.77 11.520 11.41 10.979 Ofpe/WN9 137 0
70 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
71 SK -67 105 SB* 05 26 06.1884853848 -67 10 56.784543384 11.785 12.27 12.42   11.661 OB 46 0
72 BI 184 * 05 30 30.6622260408 -71 02 31.604520048 13.033 13.830 13.926   13.954 B0.5V 28 0
73 HD 37248 WR* 05 30 38.703 -71 01 47.80 12.319 12.983 12.99 13.39 13.413 WC4+O9 58 0
74 HD 269676 ** 05 31 15.634248 -71 04 09.90516 11.134 11.417 11.547 12.061 12.191 O4If 88 0
75 SK -71 46 s*b 05 31 49.5879641544 -71 03 38.064684456 12.467 13.147 13.241   13.066 O4If 24 0
76 HD 37680 WR* 05 34 19.2493989720 -69 45 10.295445528 12.807 12.98 13.25 13.21 13.490 WC 81 1
77 BI 237 * 05 36 14.6333257920 -67 39 19.168082640 12.865 13.790 13.830   13.948 O2V(f*) 47 0
78 W61 27-56 s*b 05 36 26.7746241720 -68 57 32.036561136 11.973 12.864 12.836   11.827 B1I 32 0
79 HD 269858 s*b 05 36 43.6936418088 -69 29 47.451149232   10.24 10.15 9.95 9.05 LBV 296 2
80 HD 38029A WR* 05 36 54.633 -69 11 38.08           WC4 55 1
81 SK -66 172 * 05 37 05.3893162560 -66 21 34.989059484   13.01 13.1     O2III(f*)+OB 45 0
82 CPD-69 436 s*b 05 37 09.1787926949 -69 20 19.505185054   12.182 12.139 12.338   BC1.5Ia 32 0
83 BI 253 * 05 37 34.4595697440 -69 01 10.178659452 12.765 13.650 13.669   13.742 O2V(f*) 60 0
84 HD 269896 s*b 05 37 49.1356176384 -68 55 01.639049016 11.338 9.493 11.449 11.49   ON9.7Ia+ 102 0
85 SK -68 137 * 05 38 24.6792593784 -68 52 32.951140752 12.243 13.274 13.346   13.242 O2III-I(f) 48 0
86 Brey 77 WR* 05 38 42.1044150840 -69 05 55.335965424     12.86   12.79 O2If* 90 0
87 RMC 136 Cl* 05 38 42.396 -69 06 03.36   5.81 5.40     ~ 2236 2
88 HD 38282 WR* 05 38 53.3783458680 -69 02 00.895545204   10.98 11.11 11.26   WN5/6h+WN6/7h 192 1
89 SK -68 140 s*b 05 38 57.1713887928 -68 56 53.151615708   12.81 12.71 12.89   B0.7Ib-IabNwk 53 0
90 SK -71 50 * 05 40 43.1738709600 -71 29 00.676536072 12.479 13.142 13.445   13.537 O6.5III 28 0
91 SK -69 279 s*b 05 41 44.6553703752 -69 35 14.905767516 12.079 12.787 12.842 13.03 12.619 ON9.5Ia+ 70 0
92 SK -68 155 s*b 05 42 54.9424084824 -68 56 54.480574752   12.75 12.72     O9Ia 37 0
93 LHA 120-S 142 WR* 05 44 31.0203138528 -69 20 15.441467316 11.946 12.85 12.71 12.80 12.260 WN11h 38 0
94 HD 270145 s*b 05 48 49.6513961040 -70 03 57.837376476 10.903 12.110 12.166     O6.5Iaf 59 1
95 HD 63099 WR* 07 45 50.3991805440 -34 19 48.500286780 11.47 11.43 10.50 10.37   WC4+O7 119 0

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