2021MNRAS.501.2487M

Query : 2021MNRAS.501.2487M

2021MNRAS.501.2487M - Mon. Not. R. Astron. Soc., 501, 2487-2503 (2021/February-3)

Galactic extinction laws - II. Hidden in plain sight, a new interstellar absorption band at 7700 Å broader than any known DIB.

MAIZ APELLANIZ J., BARBA R.H., CABALLERO J.A., BOHLIN R.C. and FARINA C.

Abstract (from CDS):

We have detected a broad interstellar absorption band centred close to 7700 Å and with a full width at half-maximum (FWHM) of 176.6 ± 3.9 Å. This is the first such absorption band detected in the optical range and is significantly wider than the numerous diffuse interstellar bands (DIBs). It remained undiscovered until now because it is partially hidden behind the A telluric band produced by O2. The band was discovered using STIS@HST spectra and later detected in a large sample of stars of diverse type (OB stars, BA supergiants, red giants), using further STIS and ground-based spectroscopy. The EW of the band is measured and compared with our extinction and K I λλ7667.021, 7701.093 measurements for the same sample. The carrier is ubiquitous in the diffuse and translucent Galactic interstellar medium (ISM) but is depleted in the environment around OB stars. In particular, it appears to be absent or nearly so in sightlines rich in molecular carbon. This behaviour is similar to that of the σ-type DIBs, which originate in the low/intermediate-density UV-exposed ISM but are depleted in the high-density UV-shielded molecular clouds. We also present an update on our previous work on the relationship between E(4405-5495) and R5495 and incorporate our results into a general model of the ISM.

Abstract Copyright: © 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): methods: data analysis - techniques: spectroscopic - stars: early-type - ISM: clouds - (ISM:) dust, extinction - ISM: lines and bands

Simbad objects: 142

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Number of rows : 142
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 V* V747 Cep SB* 00 01 46.8678793584 +67 30 25.102332180 11.6 11.38 10.07     O5.5V(n)((f)) 59 0
2 BD+66 1674 * 00 02 10.2414638448 +67 25 45.186308256 10.76 10.67 9.60     O9.7IV 52 0
3 BD+66 1675 * 00 02 10.2887046096 +67 24 32.228861796 10.18 10.16 9.08     O7.5Vz 97 0
4 Cl Berkeley 59 OpC 00 02 17 +67 26.5           ~ 107 0
5 NGC 7822 29 Y*O 00 02 19.1183701152 +67 25 38.263184040   12.82 11.806   9.149 O7V((f))z 18 0
6 LEDA 2018 G 00 33 28.2 +30 51 13   14.4       ~ 9 0
7 V* KM Cas Or* 02 29 30.4684170480 +61 29 44.163943476 12.21 12.285 11.229 10.990   O9.5V((f)) 53 0
8 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
9 BD+60 513 Y*O 02 34 02.5297182912 +61 23 10.877763048 9.38 9.88 9.39     O7Vnz 116 0
10 LS I +61 303 HXB 02 40 31.6644419688 +61 13 45.593918580 11.27 11.61 10.75 10.19 9.55 B0Ve 903 2
11 BD+61 487 Em* 02 50 13.6327433232 +62 05 30.821487144 10.09 10.43 9.95     OBe 23 0
12 HD 17603 * 02 51 47.7980420280 +57 02 54.469902552 8.68 9.10 8.45     O7.5Ib(f) 95 0
13 HD 21389 sg* 03 29 54.7436040912 +58 52 43.496880384 4.99 5.10 4.54 4.03 3.53 A0Ia 305 0
14 NGC 1624 2 * 04 40 37.2758720568 +50 27 41.040508572 11.9 12.47 11.57     O7f?cp 62 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 Lep ** 05 19 34.5223081894 -13 10 36.369844928 3.03 4.04 4.29 4.41 4.69 B0.5V 322 0
18 HD 34656 Em* 05 20 43.0812017952 +37 26 19.195066068 5.87 6.77 6.76     O7.5II(f) 213 0
19 * del Ori A SB* 05 32 00.398192 -00 17 56.68527           O9.5II+B1V+B0IV 35 0
20 * lam Ori A Em* 05 35 08.2760807112 +09 56 02.991326316 2.17 3.48 3.47     O8III((f)) 527 0
21 * tet01 Ori C SB* 05 35 16.4662967280 -05 23 22.921811880 4.20 5.15 5.13 4.91 4.73 O7Vp 1479 1
22 NAME Ori Trapezium OpC 05 35 16.5 -05 23 14           ~ 1708 1
23 M 42 HII 05 35 16.8 -05 23 15           ~ 4411 0
24 NAME Ori Region reg 05 35 17.30 -05 23 28.0           ~ 623 0
25 * tet02 Ori A SB* 05 35 22.9012398264 -05 24 57.832632108 5.37 6.30 6.39 6.30 6.35 O9.5IVp 576 0
26 M 43 HII 05 35 31 -05 16.2           ~ 201 0
27 HD 37061 Or* 05 35 31.3649044920 -05 16 02.582064192 6.44 7.09 6.83     O9.5V 376 0
28 * sig Ori Y*O 05 38 44.7653828520 -02 36 00.283179888 2.54 3.58 3.79 3.87 4.11 O9.5V+B0.2V(n) 855 0
29 * zet Ori ** 05 40 45.52666 -01 56 33.2649 0.50 1.56 1.77 1.85 2.05 O9.7Ib+B0III 375 0
30 NGC 2024 1 Y*O 05 41 37.8554929272 -01 54 36.640829556   13.58 12.17     B0.5V 60 0
31 NAME Flame Nebula HII 05 41 42.7 -01 54 44           ~ 715 1
32 NGC 2024 Cl* 05 41 43 -01 50.5           ~ 1198 1
33 * mu. Col V* 05 45 59.8950238944 -32 18 23.162261796 3.84 4.90 5.18 5.30 5.57 O9.5V 523 0
34 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
35 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
36 HD 46966 ** 06 36 25.8880460976 +06 04 59.474397540 5.91 6.83 6.87     O8.5IV 218 0
37 * 15 Mon Be* 06 40 58.65963 +09 53 44.7229 3.360 4.45 4.68   4.88 O7V+B1.5/2V 823 0
38 HD 48279 * 06 42 40.5471009337 +01 42 58.252284586 7.26 8.02 7.96 8.72   O8.5VzNstrvar? 173 0
39 CD-47 4551 s*b 08 57 54.6180604176 -47 44 15.708893424 9.11 9.41 8.54 8.92   O5Ifc 84 0
40 CD-49 4263 * 09 15 52.7893643880 -50 00 43.784843184 11.88 12.03 11.05 10.78   O7.5V((f)) 20 0
41 THA 35-II-42 WR* 10 25 56.5024585224 -57 48 43.519215708   14.168 12.661 12.102   WN5ha/O3+O3Vz((f*)) 105 0
42 * rho Leo s*b 10 32 48.6703908997 +09 18 23.705339948 2.780 3.720 3.870 3.90 4.06 B1Iab 550 0
43 HD 93028 SB* 10 43 15.3393101352 -60 12 04.231982304 7.29 8.24 8.30 9.26   O9IV 181 0
44 HD 93129A SB* 10 43 57.4587319296 -59 32 51.394897284 6.46 7.478 7.310 7.84   O2If* 180 0
45 HD 93161A SB* 10 44 08.8380609288 -59 34 34.509718560 7.33 8.619 8.581 8.61   O7.5V+O9V 52 1
46 HD 93162 WR* 10 44 10.3890266112 -59 43 11.106500520 7.90 8.55 8.80 8.66   O2.5If*/WN6+OB 374 0
47 Cl Trumpler 16 244 * 10 44 13.1976537888 -59 43 10.249065660 11.033 11.507 10.709 10.25 9.33 O3.5If*Nwk 41 1
48 V* V560 Car SB* 10 44 33.7393258944 -59 44 15.434446956 6.89 7.80 7.75 7.56 7.46 O3.5V((f))+O8V 314 0
49 CPD-59 2591 * 10 44 36.7048192536 -59 47 29.696644860 10.726 11.312 10.851   9.975 O8.5V+B0.5:V: 48 0
50 HD 93250 ** 10 44 45.0275085072 -59 33 54.680974848 6.73 8.12 7.50 8.38   O4III(fc) 334 0
51 NGC 3372 HII 10 45 02.23 -59 41 59.8           ~ 1071 2
52 CPD-59 2626 * 10 45 05.8006619760 -59 45 19.624746096 9.792 10.389 9.995 10.03 9.228 O7.5V(n)z 67 0
53 V* V662 Car EB* 10 45 36.3215655240 -59 48 23.261257368 12.74 12.91 12.05 12.10   O5Vz+B0:V 54 0
54 MR 32 WR* 10 58 45.4633977552 -61 10 42.955415616   11.56 11.04 10.45   O5Ifp 34 0
55 NAME Sher 25 star * 11 15 07.6447245696 -61 15 17.611428348   13.63 12.27     B1.5Iab 82 1
56 MR 41 WR* 12 11 18.5515062048 -62 29 43.613827440   12.24 11.35 10.94 9.78 WR 22 0
57 LS 3074 El* 13 26 59.8293556824 -62 01 49.329912828 12.71 12.81 11.66 11.27   O4f+_+_O6/7:(f:) 34 0
58 UCAC4 192-122011 RG* 16 14 09.7305613134 -51 47 14.787974783       14.676   ~ 1 0
59 UCAC4 192-122036 RG* 16 14 11.8912646286 -51 46 51.613032076       14.197   ~ 1 0
60 * 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
61 * 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
62 HD 149452 * 16 37 10.5115048704 -47 07 49.828653588 9.2 10.39 9.40 9.54 8.73 O9IVn 59 0
63 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
64 HD 322417 * 16 58 55.3894193016 -40 14 33.377413884 10.65 10.90 10.22 10.02   O6.5IV((f)) 43 0
65 HD 326775 EB* 17 05 31.3097849352 -41 31 20.111206584 11.42 11.54 10.55 10.40   O6.5V(n)((f))z 30 0
66 TYC 7370-460-1 * 17 18 15.4062050856 -34 00 06.221570760   13.24 11.79     O6V((f))+O8V 14 0
67 Cl HM 1 8 * 17 19 04.4329814016 -38 49 04.869862716 14.45 14.08 12.52     O5III(f) 19 0
68 VdBH 86a ** 17 19 45.0424018176 -36 05 47.120670132 12.67   11.30 11.22 9.63 O6V((f))z 30 0
69 HD 319703 * 17 19 46.1639892408 -36 05 52.337458248 11.9 11.73 10.92 10.46 9.30 O7V((f))z 63 0
70 HD 319702 Y*O 17 20 50.6128007664 -35 51 46.033836192 10.94 11.04 10.11 10.10   O8III 57 0
71 HD 156738 * 17 20 52.6582094016 -36 04 20.565752484 10.06 10.27 9.35 9.65   O6.5III(f) 82 0
72 HD 323110 s*b 17 21 15.7981421496 -37 59 09.547362060 10.96 11.05 9.96 9.70   ON9Ia 30 0
73 HD 319718 ** 17 24 43.490 -34 11 57.03 12.28 11.94 10.44 10.05   O3.5If* 92 0
74 2MASS J17252916-3425157 Y*O 17 25 29.1670001832 -34 25 15.651551568 13.8 13.36 11.91     O6Vn((f)) 17 0
75 HD 164402 s*b 18 01 54.3809958600 -22 46 49.059228432 4.88 5.77 5.77 5.74 5.69 B0Ib 184 0
76 NAME Her 36SE Y*O 18 03 40.3201232304 -24 22 42.857540472 10.26 11.022 10.372 10.267   O8V+ 210 0
77 * 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
78 BD-14 4922 * 18 11 58.1006990040 -14 56 08.990228724 10.28 10.50 9.56 9.85   OB 28 0
79 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
80 BD-12 4979 Em* 18 18 03.1142834112 -12 14 34.307206836 9.9 10.15 9.55 9.92   O9.5V 45 0
81 BD-11 4586 s*b 18 18 03.3435555624 -11 17 38.830589016 10.26 10.33 9.52     O8Ib(f) 57 0
82 HD 167971 s*b 18 18 05.8947362832 -12 14 33.313601112 7.89 8.27 7.50 6.68 6.279 O8Iaf(n)+O4/5 324 0
83 BD-13 4923 Y*O 18 18 32.7310836576 -13 45 11.867150808 11.184 10.85 10.08 10.04 8.529 O4V((f+))+O7.5V 60 0
84 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
85 HD 168076 Y*O 18 18 36.4205083536 -13 48 02.420915796 8.12 8.72 8.25 7.62 7.21 O4III(f) 209 0
86 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
87 HD 168112 SB* 18 18 40.8671461608 -12 06 23.367244644 8.81 9.21 8.52 9.24   O5III(f) 156 0
88 M 16 OpC 18 18 45.1 -13 47 31           ~ 1084 1
89 BD-13 4929 Y*O 18 18 45.8504419992 -13 46 30.898082136 10.05 10.509 10.23 10.02 8.830 O7V+B0.5V+B0.5V: 70 0
90 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
91 NGC 6618 341A Y*O 18 20 29.8956868675 -16 10 44.417416801           O4V 15 0
92 BD-16 4826 Y*O 18 21 02.2332989664 -16 01 01.007289984 10.28 10.61 9.98 9.95   O5.5V((f))z 53 0
93 TYC 6277-1821-1 s*b 18 21 46.1925860472 -21 06 04.336953336 12.83 12.86 11.73 11.39   ON5Ifp 21 0
94 BD-14 5014 * 18 22 22.318 -14 37 08.46 10.8 11.03 10.15 10.44   O7.5V(n)((f)) 37 0
95 BD-14 5040 * 18 25 38.9003265072 -14 45 05.708025828   11.52 10.54 10.31   O5.5V(n)((f)) 37 0
96 V* V479 Sct HXB 18 26 15.0561548880 -14 50 54.247274304 12.02 12.23 11.27 11.04   ON6V((f))z 613 2
97 LBN 028.77+03.43 HII 18 31 26.5 -02 04 22           ~ 255 2
98 CXOW40 J183127.84-020523.5 * 18 31 27.827 -02 05 22.86     15.0     O9.5 25 1
99 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
100 Kiso J195001.10+262934.1 EB* 19 50 01.1024684496 +26 29 34.245371076 13.66 13.73 11.56   10.447 ~ 10 0
101 HD 226868 HXB 19 58 21.6757355952 +35 12 05.784512688 9.38 9.72 8.91 8.42   O9.7Iabpvar 4590 0
102 NAME Cyg Arm PoG 20 02 +40.0           ~ 163 0
103 HD 192639 s*b 20 14 30.4275801672 +37 21 13.816276704 6.83 7.46 7.11     O7.5Iabf 309 0
104 HD 194649 SB* 20 25 22.1272777920 +40 13 01.206964704 9.86 9.93 9.07     O5.5V((f))+O7Vz 46 0
105 BD+36 4063 SB* 20 25 40.6036899936 +37 22 27.052816368 10.93 10.67 9.656     ON9.7Ib 51 0
106 V* V1827 Cyg s*b 20 30 27.3018237840 +41 13 25.130220744     13.053     O6Iaf+O9Ia 42 0
107 Schulte 1A * 20 31 10.5466378104 +41 31 53.456458764           ~ 2 0
108 RLP 1592 SB* 20 31 18.3295427976 +41 21 21.703264884 15.88 15.09 12.99     O9III+ 32 0
109 BD+40 4212 SB* 20 31 37.5053189952 +41 13 21.001757520 12.46 11.5 10.214     O6IV:+O9III 83 1
110 Schulte 20 SB* 20 31 49.6575031512 +41 28 26.510600388 12.67 12.63 11.52     O9III+B 50 0
111 [MT91] 213 Psr 20 32 13.1247390384 +41 27 24.346666440 13.12 13.08 11.266     B0Vp 334 0
112 BD+40 4220 s*b 20 32 22.4238071594 +41 18 18.942475904 11.32 10.61 9.185     O7Iafep 414 0
113 Schulte 15 SB* 20 32 27.6544131144 +41 26 22.073616744 12.39 12.30 11.10     O8V+B 55 0
114 RLP 887 SB* 20 32 31.5336715464 +41 14 08.190216276   15.44 13.00 12.15   O7Ib(f) 43 0
115 Schulte 12 s*b 20 32 40.9572199728 +41 14 29.279036940 16.1 14.45 11.702     B3-4Ia+ 453 0
116 RLP 666 SB* 20 33 02.9131259304 +41 17 43.161301572 15.67 15.06 12.94 12.18   O8V+G-O 40 0
117 Schulte 22A * 20 33 08.7655811880 +41 13 18.702872112           O3If* 22 0
118 Schulte 50 SB* 20 33 09.60288 +41 13 00.5520 15.52 14.82 12.86 12.32   O9V+B9V-A0V 38 1
119 Schulte 9 s*b 20 33 10.7362926720 +41 15 08.222370372 13.38 12.77 10.96     O5I+O4III 243 0
120 Ass Cyg OB 2 As* 20 33.2 +41 19           ~ 1023 0
121 Schulte 7 * 20 33 14.1095938872 +41 20 21.904113804 12.24 12.00 10.55     O3If* 153 0
122 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
123 RLP 841 ** 20 33 23.472072 +41 09 12.90312 14.97 14.23 11.83 10.98   O6IV((f)) 43 0
124 Schulte 27 SB* 20 33 59.5281120792 +41 17 35.477936340 14.44 13.97 12.203   10.250 O9.7V(n)+O9.7V(n) 58 0
125 BD+41 3807 SB* 20 34 08.5147948176 +41 36 59.408503092 11.74 11.52 10.03     O5.5Ifc 137 0
126 Schulte 73 SB* 20 34 21.9323730840 +41 17 01.655524788   14.13 12.40     O8Vz+O8Vz 34 0
127 RLP 1252 * 20 34 57.8460419376 +41 43 54.274437444   16 13.2     O8III(f)e 11 0
128 LS III +46 11 s*b 20 35 12.6369328512 +46 51 12.108461292 12.46 12.295 10.926 10.005   O3.5If*+O3.5If* 35 0
129 Cl Berkeley 90 OpC 20 35 15.5 +46 50 30           ~ 36 0
130 LS III +46 12 * 20 35 18.5652236712 +46 50 02.913981468 11.07 11.217 10.262 9.640   O4.5IV(f) 31 0
131 IC 5070 HII 20 51.0 +44 22           ~ 218 1
132 HD 199216 * 20 53 52.4036563032 +49 32 00.325435776 7.05 7.51 7.03     B1II 93 0
133 1RXS J205549.4+435216 Y*O 20 55 51.2556248952 +43 52 24.463877376   16.059 13.087 11.850   O3.5III(f*)+O8 30 1
134 NAME Gulf of Mexico DNe 20 56.8 +43 52           ~ 53 0
135 NGC 7000 Cl* 20 58 47 +44 19.8           ~ 427 0
136 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
137 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
138 * 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
139 BD+62 2078 * 22 25 33.5801846136 +63 25 02.616087864 10.83 10.76 9.78     O7V((f))z 41 0
140 HD 217086 Y*O 22 56 47.1887590800 +62 43 37.657173900 7.88 8.30 7.66 8.35   O7Vnn((f))z 263 0
141 TYC 4279-1463-1 * 23 13 34.3977427416 +61 30 14.637855024   12.76 11.66     O3.5V((f*))+O9.5V 31 0
142 NAME Local Bubble ISM ~ ~           ~ 1059 0

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