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8/14/2019 Evidence for a colour dependence in the size distribution of main belt asteroids
1/29
arXiv:as
tro-ph/0611310v1
9Nov2006
http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v1http://arxiv.org/abs/astro-ph/0611310v18/14/2019 Evidence for a colour dependence in the size distribution of main belt asteroids
2/29
g r
r
g
r
g
r
8/14/2019 Evidence for a colour dependence in the size distribution of main belt asteroids
3/29
V 22
dN DpdD
D
dN
D
D + dD
p = 3.5
D < 1
8/14/2019 Evidence for a colour dependence in the size distribution of main belt asteroids
4/29
1o 1o
g
400 580
r
550 700
g r
i
g r
g
g
8/14/2019 Evidence for a colour dependence in the size distribution of main belt asteroids
5/29
g
r g
g
r
7
g 19 r
2
8/14/2019 Evidence for a colour dependence in the size distribution of main belt asteroids
6/29
8/14/2019 Evidence for a colour dependence in the size distribution of main belt asteroids
7/29
g
r
g r
8/14/2019 Evidence for a colour dependence in the size distribution of main belt asteroids
8/29
Hk
k
mk
mk = Hk + 5 log10(r) + P()
r
P() P() G
3.9o r
r
mk
Hk
r
D =1347 10Hk/5
A1/2k
D Ak k D
Hk
Hk Hk
log N(< Hk) = C + Hk.
N C
8/14/2019 Evidence for a colour dependence in the size distribution of main belt asteroids
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N(> D) Db
b N D
b = 5
b
b = 2.4
b = 1.8
b = 1.8
m
b = 1.5
8/14/2019 Evidence for a colour dependence in the size distribution of main belt asteroids
10/29
b = 1.3
b = 1.2
b = 1.9
8/14/2019 Evidence for a colour dependence in the size distribution of main belt asteroids
11/29
8/14/2019 Evidence for a colour dependence in the size distribution of main belt asteroids
12/29
0.5 0.0 0.5 1.0
5
10
20
50
10
0
500
log10(Diam (km))
umuatvenu
m
er
g
r
8/14/2019 Evidence for a colour dependence in the size distribution of main belt asteroids
13/29
g b = 1.87 0.05 r b = 2.45 0.07
1.94 0.15
2.23 0.11
8/14/2019 Evidence for a colour dependence in the size distribution of main belt asteroids
14/29
0.4 0.2 0.0 0.2 0.4 0.6 0.8
10
20
50
10
0
200
500
log10(Diam (km))
umuatvenu
m
er
g
r
g
r
g
r
8/14/2019 Evidence for a colour dependence in the size distribution of main belt asteroids
15/29
b = 1.35 0.02 1.79 0.07
8/14/2019 Evidence for a colour dependence in the size distribution of main belt asteroids
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r
g
(2.0 < a(AU) 2.6) (2.6 < a(AU) 3.0)
(3.0 < a(AU) 3.5)
8/14/2019 Evidence for a colour dependence in the size distribution of main belt asteroids
17/29
0.5 0.0 0.5 1.0
2
5
10
20
50
100
200
log10(Diam (km))
umuatvenu
m
er
g
r
8/14/2019 Evidence for a colour dependence in the size distribution of main belt asteroids
18/29
0.5 0.0 0.5 1.0
2
5
10
20
50
100
200
log10(Diam (km))
umuatvenu
m
er
g
r
8/14/2019 Evidence for a colour dependence in the size distribution of main belt asteroids
19/29
0.5 0.0 0.5 1.0
1
2
5
10
20
50
log10(Diam (km))
umuatvenu
m
er
r
b = 2.39 0.07) b = 2.25 0.08
r
b = 2.00 0.05)
g
8/14/2019 Evidence for a colour dependence in the size distribution of main belt asteroids
20/29
(b = 1.85 0.06) b = 1.58 0.06
b = 1.60 0.07
g
r
b
N
g
r
g
r
g
r
g
r
r
8/14/2019 Evidence for a colour dependence in the size distribution of main belt asteroids
21/29
r
b = 1.8 0.07 1.81 0.09
b = 2.39 0.07 2.25 0.08
g
r
g
r
g
r
g
r
g
r
8/14/2019 Evidence for a colour dependence in the size distribution of main belt asteroids
22/29
g r
r
g
r
8/14/2019 Evidence for a colour dependence in the size distribution of main belt asteroids
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r
g.
8/14/2019 Evidence for a colour dependence in the size distribution of main belt asteroids
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8/14/2019 Evidence for a colour dependence in the size distribution of main belt asteroids
25/29
8/14/2019 Evidence for a colour dependence in the size distribution of main belt asteroids
26/29
8/14/2019 Evidence for a colour dependence in the size distribution of main belt asteroids
27/29
8/14/2019 Evidence for a colour dependence in the size distribution of main belt asteroids
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r g
g r
A
8/14/2019 Evidence for a colour dependence in the size distribution of main belt asteroids
29/29
N
D < 2.5 3.5