2002NewA....7..117Z

Query : 2002NewA....7..117Z

2002NewA....7..117Z - New Astronomy, 7, 117-123 (2002/May-0)

The relation between far-UV and visible extinctions.

ZAGURY F.

Abstract (from CDS):

For directions of sufficient reddening (E(B-V)≳0.25), there is a simple relation between the slope of the extinction curve in the far-UV and E(B-V). Regardless of direction, the far-UV extinction curve is proportional to 1/λn e-2E(B-V)/λ (λ in µm, n=4), in accordance with the idea that reddened stars spectra are contaminated by scattered light (Zagury, 2001b). This relation is not compatible with the standard theory of extinction which states that far-UV and visible extinctions are due to different classes of particle. In that model the two (far-UV and visible) extinctions vary thus independently according to the proportion of each type of particle. In preceding papers I have shown that the standard theory cannot explain UV observations of nebulae, and is contradicted by the UV spectra of stars with very low reddening: for how long shall the standard theory be considered as the interpretation of the extinction curve?

Abstract Copyright: ∼

Journal keyword(s): Dust - Extinction

Simbad objects: 43

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Number of rows : 43
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 * tau And V* 01 40 34.8161856549 +40 34 37.339701270 4.44 4.85 4.94 4.95 5.02 B8III 85 0
2 HD 12993 V* 02 09 02.4741997056 +57 55 55.948483236 8.38 9.13 8.98     O6.5V((f))Nstr 154 0
3 HD 13338 bC* 02 12 19.1724315240 +57 56 27.171976740 8.73 9.38 9.17     O9.5V 58 0
4 HD 21483 * 03 28 46.6537212648 +30 22 31.231016796 7.080 7.390 7.070     B3III 155 0
5 HD 29647 * 04 41 08.0448698568 +25 59 33.949206132 9.69 9.22 8.31 7.35 6.60 B9IIIpHgMn 217 0
6 HD 31726 * 04 57 44.6845893336 -14 13 54.901969680   5.939 6.139     B2V 136 0
7 * eta Aur PM* 05 06 30.8941413263 +41 14 04.112669983 2.33 3.00 3.18 3.23 3.40 B3V 391 0
8 HD 269698 s*b 05 31 44.2080798984 -67 38 01.374839556 9.520 12.00 12.22 12.47 11.167 O4Ia 117 0
9 * ups Ori SB* 05 31 55.8599595648 -07 18 05.535884975 3.30 4.36 4.63 4.75 5.01 O9.7V 426 0
10 * 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
11 HD 37367 * 05 39 18.3135535104 +29 12 54.788852916 5.6 6.116 5.984     B2IV-V 141 0
12 HD 37903 Em* 05 41 38.3891026008 -02 15 32.479650720 7.32 7.94 7.83 7.64 7.52 B3IV 385 0
13 HD 38087 Or* 05 43 00.5754723576 -02 18 45.389406240 7.96 8.40 8.29 8.06 7.89 B3II 182 1
14 HD 251204 s*b 06 05 05.6666038296 +23 23 38.533246404 10.21 10.52 10.2     B0 64 0
15 * 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
16 HD 58050 Be* 07 24 27.6487438296 +15 31 01.908288624 5.39 6.23 6.41     B2Ve 138 0
17 HD 62542 * 07 42 37.2147724128 -42 13 47.831717064   8.21 8.03     B3V 164 0
18 HD 74273 bC? 08 41 05.3198654376 -48 55 21.652130928 4.77 5.695 5.879     B2III 96 0
19 HD 93222 Y*O 10 44 36.2481200208 -60 05 28.890759120 7.26 8.18 8.10 8.91   O7V((f))z 212 0
20 HD 93250 ** 10 44 45.0275085072 -59 33 54.680974848 6.73 8.12 7.50 8.38   O4III(fc) 334 0
21 * eps Cen bC* 13 39 53.25774 -53 27 59.0081 1.16 2.08 2.30 2.45 2.70 B1III 259 0
22 * 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
23 HD 147889 Or* 16 25 24.3163637976 -24 27 56.569805208 8.56 8.73 7.90     B2V 512 1
24 * rho Oph A SB* 16 25 35.1185711280 -23 26 49.831640736 4.3 5.22 5.05     B1V 444 0
25 HD 154445 * 17 05 32.2587926880 -00 53 31.437713328 5.10 5.73 5.61 5.39 5.34 B1V 276 0
26 HD 161056 * 17 43 47.0221609752 -07 04 46.594311996 6.26 6.68 6.32 5.94 5.67 B3II/III 201 0
27 HD 169454 s*b 18 25 15.1937863728 -13 58 42.309359544 7.39 7.61 6.71 5.82 5.13 B1Ia+ 359 1
28 HD 190944 Be* 20 05 25.6623994800 +46 40 18.542883540 7.77 8.56 8.34     B1.5Vne 55 0
29 HD 229196 Pu* 20 23 10.7840350992 +40 52 29.847533160 9.29 9.32 8.59     O6II(f) 123 0
30 * 57 Cyg SB* 20 53 14.7587928897 +44 23 14.147866955 4.05 4.63 4.77 4.84 4.97 B5V 197 0
31 HD 200775 Ae* 21 01 36.9205762896 +68 09 47.789578836 7.34 7.754 7.427 8.13   B2Ve 582 0
32 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
33 HD 239729 Y*O 21 39 27.4057254792 +57 29 00.810299364 8.17 8.71 8.35   7.96 B0V 82 0
34 * 10 Lac ** 22 39 15.6786372 +39 03 00.971152 3.650 4.670 4.880 4.98 5.19 O9V 790 0
35 * ksi Oct Pu* 22 50 22.8139009656 -80 07 25.841844408 4.7 5.180 5.311     B6V 100 0
36 BD+62 2125 * 22 52 50.1993581784 +63 24 48.394074636 9.34 9.57 9.0     B5 52 0
37 HD 216898 Pu* 22 55 42.4584233736 +62 18 22.821300252 8.10 8.58 8.04     O9V 161 0
38 HD 217061 Be* 22 56 42.5512941096 +62 37 29.565104160 9.22 9.37 8.9     B5 102 0
39 HD 217463 SB* 22 59 42.8721843072 +62 46 38.330808456 9.18 9.49 9.1     B1.5Vn 75 0
40 BD+62 2154 * 23 00 32.1566531664 +63 30 58.864605552 9.42 9.76 9.33     B1V 40 0
41 HD 217979 SB* 23 03 20.1297828768 +63 33 01.965353976 8.44 8.87 8.6     B5 71 0
42 * ome02 Aqr PM* 23 42 43.3453038933 -14 32 41.659905000   4.448 4.484     B9.5V 152 0
43 BD+66 1661 * 23 57 32.6036981472 +67 33 15.293987460 9.33 9.41 8.76     O9.2V 64 0

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