2002ApJ...576..773S


Query : 2002ApJ...576..773S

2002ApJ...576..773S - Astrophys. J., 576, 773-789 (2002/September-2)

The small-scale structure of the Magellanic stream.

STANIMIROVIC S., DICKEY J.M., KRCO M. and BROOKS A.M.

Abstract (from CDS):

We have mapped two regions at the northern tip of the Magellanic Stream in neutral hydrogen 21 cm emission, using the Arecibo telescope. The new data are used to study the morphology and properties of the Stream far away from the Magellanic Clouds, as well as to provide indirect constraints on the properties of the Galactic halo. We investigate confinement mechanisms for the Stream clouds and conclude that these clouds cannot be gravitationally confined or in free expansion. The most likely mechanism for cloud confinement is pressure support from the hot Galactic halo gas. This allows us to place an upper limit on the halo density: nh15kpc=10–3 cm–3 and/or nh45kpc=3x10–4 cm–3, depending on the distance. These values are significantly higher than predicted for an isothermal stratified halo.

Abstract Copyright:

Journal keyword(s): Galaxies: Halos - Galaxies: Interactions - Galaxies: Magellanic Clouds - Radio Lines: Galaxies

Nomenclature: Table 1: [SDK2002] MS V N (Nos 1-3), [SDK2002] MS VI N (Nos 1-4), [SDK2002] MS V A (Nos H, L), [SDK2002] MS VI N=1. Text p.776: [SDK2002] MS VI looplike N=1, [SDK2002] MS V round cloud N=1, [SDK2002] MS V straight filament N=1, [SDK2002] MS V curved filament N=1.

Simbad objects: 25

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Number of rows : 25
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 NAME Magellanic Stream HVC 00 32 -30.0           ~ 905 1
2 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 10389 1
3 NAME Magellanic Stream I HVC 01 24 -58.8           ~ 19 0
4 NAME Magellanic Bridge HI 03 11 -77.5           ~ 396 1
5 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 16277 1
6 HVC 125+41-208 HVC 12 24.0 +75 36           ~ 35 0
7 [SDK2002] MS VI 4 ? 23 06 19 +12 23.7           ~ 1 0
8 [SDK2002] MS V I ? 23 07 00 +12 22.0           ~ 1 0
9 [SDK2002] MS VI 1 ? 23 07 07 +11 55.8           ~ 1 0
10 [SDK2002] MS VI 3 ? 23 07 23 +11 37.8           ~ 1 0
11 [SDK2002] MS VI looplike ? 23 07 26 +12 47.5           ~ 1 1
12 [SDK2002] MS VI 2 ? 23 07 55 +13 03.7           ~ 1 0
13 [SDK2002] MS V straight filament ? 23 38 +08.0           ~ 1 1
14 [SDK2002] MS V 3 ? 23 38 07 +07 36.7           ~ 1 0
15 [SDK2002] MS V 2 ? 23 38 55 +07 38.7           ~ 1 0
16 [SDK2002] MS V round cloud Cld 23 39 +07.6           ~ 1 0
17 [SDK2002] MS V L ? 23 39 00 +08 19.0           ~ 1 0
18 [SDK2002] MS V curved filament ? 23 39.5 +07 40           ~ 1 0
19 [SDK2002] MS V H ? 23 40 00 +08 10.0           ~ 1 0
20 [SDK2002] MS V 1 ? 23 40 23 +07 58.8           ~ 1 0
21 NAME Magellanic Stream III HVC ~ ~           ~ 17 0
22 NAME Magellanic Stream II HVC ~ ~           ~ 21 0
23 NAME Magellanic Stream VI HVC ~ ~           ~ 12 0
24 NAME Magellanic Stream V HVC ~ ~           ~ 11 0
25 NAME Magellanic Stream IV HVC ~ ~           ~ 22 0

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2022.10.05-12:04:41

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