2024MNRAS.532.2065C

Query : 2024MNRAS.532.2065C

2024MNRAS.532.2065C - Mon. Not. R. Astron. Soc., 532, 2065-2081 (2024/August-1)

Diffuse interstellar bands in the near-infrared: expanding the reddening range.

CASTELLANOS R., NAJARRO F., GARCIA M., PATRICK L.R. and GEBALLE T.R.

Abstract (from CDS):

We have investigated the behaviour of three strong near-infrared diffuse interstellar bands (DIBs) at λ13177 Å, λ14680 Å, and λ15272 Å, on a larger sample of sightlines and over a wider range of extinctions than previously studied, utilizing spectra from three observatories. We applied two telluric correction techniques to reduce atmospheric contamination and have used Gaussian fits to characterize the DIB profiles and measure equivalent widths. We confirmed strong and approximately linear correlations with reddening of the λ13177 Å, λ14680 Å, and λ15272 Å DIBs, extending them to higher reddening values and strengthening their link to interstellar matter. Modelling of the λ14680 Å DIB profiles revealed intrinsic variations, including line broadening, linked to their formation processes. This effect is particularly pronounced in the Galactic Centre (GC) environment, where multiple diffuse molecular clouds along the line of sight contribute to line broadening. We have detected one new DIB candidate at λ14795 Å on sightlines with high reddening.

Abstract Copyright: © 2024 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.

Journal keyword(s): stars: early-type - ISM: clouds - dust, extinction - ISM: lines and bands - ISM: molecules

Simbad objects: 66

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Number of rows : 66
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 10747 * 01 41 17.9039417352 -75 39 49.118705820   8.01 8.15     B2V 47 0
2 HD 48434 s*b 06 43 38.6456583720 +03 55 57.109225980 4.99 5.88 5.90     B0III 166 0
3 HD 80077 s*b 09 15 54.7869062472 -49 58 24.575734452 10.50 10.29 9.00 7.89   B2.5Ia+ 156 0
4 WR 42e WR* 11 14 45.5134690272 -61 15 00.297434808   16.048 14.529     O2If*-WN6 17 0
5 NGC 3603 OpC 11 14 57.9 -61 14 32           ~ 1136 1
6 Cl* NGC 3603 MTT 31 * 11 15 06.6882419424 -61 16 33.434793624   15.20 13.96     O2V 8 0
7 [CRN2020] W1008 * 16 46 55.4051552021 -45 51 54.264257045   23.1 19.73 17.11 14.40 O9.5II 8 0
8 [CRN2020] W1025 ** 16 47 00.7733922009 -45 52 04.770262910   22.9 19.91 17.65 15.26 O+O? 7 0
9 Cl* Westerlund 1 W 57 s*b 16 47 01.3600091808 -45 51 45.804003408   20.7 16.877 13.83 11.13 B4Ia 22 0
10 Cl* Westerlund 1 W 24 s*b 16 47 02.1561069816 -45 51 12.581922276   23.0 18.71 15.96 13.24 O9Iab 22 0
11 Cl Westerlund 1 OpC 16 47 02.4 -45 51 07           ~ 655 1
12 [CRN2020] W1034 s*b 16 47 02.5294508952 -45 51 48.420453636   22.5 18.69 16.34 13.85 O9.5Iab 9 0
13 Cl* Westerlund 1 W 61b s*b 16 47 02.5662082776 -45 51 41.864431536   22.7 18.59 16.00 13.31 O9.5Iab 20 0
14 Cl* Westerlund 1 W 38 s*b 16 47 02.8628531323 -45 50 46.145964246   23.2 19.10 16.47 13.81 O9Iab 14 0
15 Cl* Westerlund 1 W 7 s*b 16 47 03.6281794392 -45 50 14.365482036   20.0 15.972 12.73 9.99 B5Ia+ 31 0
16 Cl* Westerlund 1 W 43c * 16 47 03.7585229164 -45 50 58.441368189   20.4 18.35 16.18 13.66 O9Ib 12 0
17 Cl* Westerlund 1 W 33 s*b 16 47 04.1256274968 -45 50 48.488202564   20.090 15.61 12.803 10.04 B5Ia+ 26 0
18 [CRN2020] W1043 * 16 47 04.5641198378 -45 50 59.466200077   23.3 20.17 17.39 14.53 O9.5II-III 8 0
19 Cl* Westerlund 1 W 18 s*b 16 47 05.7082494087 -45 50 50.480383849   21.2 17.610 14.898 12.228 B0.5Ia 12 0
20 [CRN2020] W1047 * 16 47 06.1168390416 -45 52 32.246125752   22.1 18.93 16.58 14.03 O9.5II 9 0
21 Cl* Westerlund 1 W 15 * 16 47 06.6306037464 -45 50 29.723762580   22.8 18.96 16.38 13.75 O9Ib 29 0
22 Cl* Westerlund 1 W 74 s*b 16 47 07.0783996992 -45 50 13.086504168       15.835 13.312 O9.5Iab 17 0
23 [CRN2020] W1062 ** 16 47 10.6420707051 -45 50 46.468343839   23.6 20.03 17.48 14.90 O+O? 8 0
24 [RCN2009] W3003 V* 16 47 11.6073210840 -45 49 22.478619972   23.1 19.08 16.211 13.314 B0Ib 16 0
25 [RCN2009] W3004 s*b 16 47 13.3832726280 -45 49 10.636397724   23.2 18.93 15.960 12.990 B0Iab 12 0
26 HD 154445 * 17 05 32.2587926880 -00 53 31.437713328 5.10 5.73 5.61 5.39 5.34 B1V 276 0
27 [DWC2011] 145 EmO 17 45 16.9069973880 -29 12 17.963893476           ~ 3 0
28 CXOGC J174531.4-285716 s*b 17 45 31.50 -28 57 16.8           O4-6I 9 0
29 2MASS J17453798-2901345 s*b 17 45 37.9847468880 -29 01 34.495591512           O4Ia 12 0
30 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
31 NAME Sgr A* X 17 45 40.03599 -29 00 28.1699           ~ 4970 3
32 [MCD2010] 9 s*b 17 45 41.27 -28 51 47.7           O4-6If+ 7 0
33 [MCD2010] 13 s*b 17 46 01.65 -28 55 15.3           B0-1Ia+/WNLh 9 0
34 [MCD2010] 15 WR* 17 46 10.01 -28 55 32.4           WN8-9h 9 0
35 2MASS J17461384-2848504 s*b 17 46 13.85 -28 48 50.4           O7-8Ia+ 8 0
36 NAME Quintuplet Cluster OpC 17 46 13.9 -28 49 48           ~ 561 0
37 WR 102d WR* 17 46 14.05 -28 49 16.5           WN9 21 0
38 WR 102dc WR* 17 46 14.69 -28 49 40.7           WC9d+OB 58 0
39 WR 102e WR* 17 46 14.81 -28 50 00.6           WC8-9(d?+OB?) 15 0
40 LHO 89 s*b 17 46 15.00 -28 49 33.2           O7.5-8.5If 4 0
41 [FMM95] 3 s*b 17 46 15.240 -28 50 03.58           LBV 151 1
42 WR 102ha WR* 17 46 15.86544 -28 49 45.6312           WC8/9d+OB 61 0
43 WR 102i WR* 17 46 16.54 -28 49 32.0           WN9 17 0
44 LHO 1 s*b 17 46 16.74 -28 49 51.2           O7-8Ia+/WNLh 9 0
45 WR 102j WR* 17 46 17.53 -28 49 29.0           WN9 16 0
46 [GMC99] D6 s*b 17 46 17.982 -28 49 03.46           LBV 66 0
47 WR 102ka WR* 17 46 18.12 -29 01 36.6           WN10 35 0
48 2MASS J17471225-2831215 WR* 17 47 12.25 -28 31 21.6           WN7-8h 6 0
49 EM* AS 268 WR* 18 02 23.4574037952 -23 34 37.491692196   14.38 12.31 11.43   WN9h 106 0
50 [MFD2008] 15 s*b 18 13 20.9841275352 -17 49 47.006249052   19.67   15.40   LBV: 7 0
51 2MASS J18202439-1608434 Y*O 18 20 24.3865813896 -16 08 43.368235944 17.69 16.97 15.55     O9.5V 34 0
52 2MASS J18203083-1610075 Y*O 18 20 30.8347326504 -16 10 07.525548156 17.44 16.85 15.41     O6V 30 0
53 MSX6C G026.4700+00.0207 s*b 18 39 32.2472383848 -05 44 20.185351872           LBV_B 43 1
54 IRAS 19040+0817 LP? 19 06 24.5671675680 +08 22 01.432214652       16.78   ~ 15 0
55 [D75b] Em* 19-008 LP* 19 44 37.5996230040 +24 19 05.740220208   16.42 14.64 13.68   ~ 17 1
56 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
57 HD 229059 s*b 20 21 15.3643937664 +37 24 31.106402136 10.66 10.23 8.70     B2Iabe 102 0
58 IRAS 20298+4011 LP? 20 31 42.2846664600 +40 21 59.074415640       15.384   B:I[e] 98 0
59 Schulte 12 s*b 20 32 40.9572199728 +41 14 29.279036940 16.1 14.45 11.702     B3-4Ia+ 453 0
60 Ass Cyg OB 2 As* 20 33.2 +41 19           ~ 1023 0
61 Schulte 7 * 20 33 14.1095938872 +41 20 21.904113804 12.24 12.00 10.55     O3If* 153 0
62 BD+41 3807 SB* 20 34 08.5147948176 +41 36 59.408503092 11.74 11.52 10.03     O5.5Ifc 137 0
63 2MASS J20395358+4222505 LP? 20 39 53.5834837368 +42 22 50.622585420   16.63   12.75   B0I 5 0
64 HD 203532 * 21 33 54.5744476728 -82 40 59.106857160 6.15 6.51 6.38     B3.5V 108 0
65 * 18 Peg * 22 00 07.9250290512 +06 43 02.810180604 5.31 5.88 6.00     B3III 119 0
66 NAME Local Arm reg ~ ~           ~ 649 0

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