2010MNRAS.404..265D

Query : 2010MNRAS.404..265D

2010MNRAS.404..265D - Mon. Not. R. Astron. Soc., 404, 265-274 (2010/May-1)

Interstellar extinction and polarization - a spheroidal dust grain approach perspective.

DAS H.K., VOSHCHINNIKOV N.V. and IL'IN V.B.

Abstract (from CDS):

We extend and investigate the spheroidal model of interstellar dust grains used to simultaneously interpret the observed interstellar extinction and polarization curves. We compare our model with similar models recently suggested by other authors, study its properties and apply it to fit the normalized extinction A(λ)/AV and the polarizing efficiency P(λ)/A(λ) measured in the near-infrared to far-ultraviolet region for several stars seen through one large cloud. We conclude that the model parameter Ω being the angle between the line of sight and the magnetic field direction can be more or less reliably determined from comparison of the theory and observations. This opens a way to study the spatial structure of interstellar magnetic fields by using multiwavelength photometric and polarimetric observations.

Abstract Copyright: © 2010 The Authors. Journal compilation © 2010 RAS

Journal keyword(s): polarization - ISM: clouds - dust, extinction

Simbad objects: 24

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Number of rows : 24
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 Eri Bubble HI 03 52 -02.0           ~ 148 0
2 * 31 Tau ** 03 52 00.2291740237 +06 32 05.659794373 5.3         B3.5V+ 111 0
3 HD 25443 * 04 06 08.0655259656 +62 06 06.607649268 6.45 6.998 6.766     B0.5III 155 0
4 HD 62542 * 07 42 37.2147724128 -42 13 47.831717064   8.21 8.03     B3V 164 0
5 [GB2001] AG 6 Cld 08 09 +04.7           ~ 3 0
6 HD 99264 * 11 24 11.1271526712 -72 15 23.789086920 5.08 5.585 5.583     B2V 90 0
7 NAME Chamaeleon Region SFR 11 55 -78.0           ~ 887 0
8 NAME Musca Cld 12 23 -71.3           ~ 258 0
9 NAME Upper Sco Association As* 16 12 -23.4           ~ 1586 1
10 NAME Upper Sco-Cen As* 16 15 -24.2           ~ 1497 1
11 * 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
12 * rho Oph ** 16 25 35.11766 -23 26 49.8150 4.30 4.85 4.63 4.27 3.96 B2IV+B2V 670 0
13 * rho Oph A SB* 16 25 35.1185711280 -23 26 49.831640736 4.3 5.22 5.05     B1V 444 0
14 NAME rho Oph AB PoC 16 26 57.2 -24 23 24           ~ 8 0
15 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1
16 * 20 Aql V* 19 12 40.7117853648 -07 56 22.263784872 5.03 5.47 5.34     B2/3II 240 0
17 LDN 1036 Y*O 20 38 57.48 +57 09 37.6           ~ 28 0
18 LDN 1049 DNe 20 41 33 +57 34.0           ~ 11 0
19 V* V379 Cep SB* 20 43 13.6836908304 +57 06 50.370751800 6.17 6.591 6.334     B2III 155 0
20 Ass Cyg OB 7 As* 21 08 +47.6           ~ 218 0
21 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
22 Ass Cep OB 2 As* 21 51 +60.0           ~ 303 0
23 HD 210121 * 22 08 11.9027578440 -03 31 52.765490316   7.84 7.68     B7II 185 0
24 NAME Local Bubble ISM ~ ~           ~ 1059 0

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