2007ApJ...665..363S

Query : 2007ApJ...665..363S

2007ApJ...665..363S - Astrophys. J., 665, 363-368 (2007/August-2)

Measurement of dust optical properties in the Coalsack nebula.

SUJATHA N.V., MURTHY J., SHALIMA P. and HENRY R.C.

Abstract (from CDS):

We have used FUSE and Voyager observations of dust-scattered starlight in the neighborhood of the Coalsack Nebula to derive the optical constants of the dust grains. The albedo is consistent with a value of 0.28±0.04, and the phase function asymmetry factor with a value of 0.61±0.07, throughout the spectral range from 900-1200 Å, in agreement with previous determinations as well as theoretical predictions. We have now observed two regions (Ophiuchus and Coalsack) with intense diffuse background radiation and in both cases have found that the emission is due to light from nearby hot stars scattered by a relatively thin foreground cloud, with negligible contribution from the background molecular cloud.

Abstract Copyright: ∼

Journal keyword(s): ISM: Dust, Extinction - Ultraviolet: ISM

Simbad objects: 27

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Number of rows : 27
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 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
2 * p Car Be* 10 32 01.4650915230 -61 41 07.195030368 2.46 3.18 3.27 3.22 3.28 B4Vne 243 0
3 HD 92938 Be* 10 42 14.1192723749 -64 27 59.133997516 4.10 4.68 4.82     B3V 131 0
4 * tet Car SB* 10 42 57.4019674 -64 23 40.020796 1.53 2.54 2.76 2.87 3.10 B0Vp 351 0
5 HD 93194 * 10 44 06.9012455223 -63 57 39.869369989 4.03 4.649 4.789     B3/5Vn 94 0
6 HD 93607 * 10 46 51.2189828556 -64 23 00.504549149 4.06 4.69 4.83     B4V 101 0
7 HD 97152 WR* 11 10 04.0797150120 -60 58 44.963276664 7.47 8.03 8.07 8.91   WC7+O7V 190 0
8 HD 99103 * 11 23 21.0948439672 -64 57 15.436320941   6.61 6.55     B9.5IV 14 0
9 HD 99264 * 11 24 11.1271526712 -72 15 23.789086920 5.08 5.585 5.583     B2V 90 0
10 HD 102567 HXB 11 48 00.0214464120 -62 12 24.902384760 8.24 9.06 9.00 9.62   B1Vne 335 0
11 * j Cen Be* 11 49 41.0673344112 -63 47 18.500667000 3.58 4.160 4.308     B3V 125 0
12 HD 103884 Pu* 11 57 40.0073575296 -62 26 55.494356496   5.400 5.557     B4V 81 0
13 * tet02 Cru SB* 12 04 19.2200768232 -63 09 56.516665140 4.02 4.613 4.716     B3V 106 1
14 HD 104994 WR* 12 05 18.7204232424 -62 03 10.140656832 9.95 10.94 10.93 11.03   WN3p-w 170 0
15 HD 108002 * 12 24 55.9571476872 -65 12 39.649886676 6.3 7.008 6.955 7.85   B2Ia/ab 67 0
16 * alf Cru SB* 12 26 35.89522 -63 05 56.7343           B0.5IV+B1V 99 0
17 * gam Cru PM* 12 31 09.95961 -57 06 47.5684 5.01 3.23 1.64 -0.02 -1.44 M3.5III 291 1
18 NAME Coalsack Nebula DNe 12 31 19 -63 44.6           ~ 275 0
19 * bet Cru bC* 12 47 43.26877 -59 41 19.5792 0.03 1.02 1.25 1.38 1.64 B1IV 360 1
20 HD 111195 * 12 48 29.2705092408 -67 21 25.909580196   8.67 8.69     B2V 6 0
21 HD 111283 * 12 49 02.4749803591 -65 35 35.396090939 6.91 7.28 7.32     B6III/V 26 0
22 HD 111641 * 12 51 47.6069381856 -66 51 22.423170348   8.32 8.40     B3V 7 0
23 V* V340 Mus EB* 13 06 32.3469119472 -65 04 49.533683556 7.19 8.01 7.90 9.09   O9IV 44 0
24 HD 113708 * 13 06 48.3355631328 -65 12 43.719050160 7.22 8.03 8.17 9.03   B1/2III(n) 43 0
25 HD 116796 * 13 27 32.4931799688 -63 32 21.802962876 7.65 9.09 9.01 9.29   O9II 33 0
26 HD 117667 PM* 13 33 17.1664556472 -59 33 14.549734044   10.33 9.70     G5 6 0
27 * bet Cen bC* 14 03 49.40535 -60 22 22.9266     0.58     B1III 371 0

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