2008ApJ...672..930V

Query : 2008ApJ...672..930V

2008ApJ...672..930V - Astrophys. J., 672, 930-939 (2008/January-2)

Spiral structure in the outer galactic disk. I. The third galactic quadrant.

VAZQUEZ R.A., MAY J., CARRARO G., BRONFMAN L., MOITINHO A. and BAUME G.

Abstract (from CDS):

We combine optical and radio observations to trace the spiral structure in the third quadrant of the Milky Way. The optical observations consist of a large sample of young open clusters and associations, whereas the radio observations consist of a survey of nearby and distant clouds observed in CO. Both the optical and radio samples are the largest ones thus far presented in the literature. We use this unique material to analyze the behavior of interstellar extinction and to trace the detailed structure of the third Galactic quadrant (TGQ).We find that the outer (Cygnus) grand design spiral arm is traced by stellar and CO components, while the Perseus arm is traced solely by CO and is possibly being disrupted by the crossing of the Local (Orion) arm. The Local arm is traced by CO and young stars toward l=240° and extends for over 8 kpc along the line of sight reaching the outer arm. Finally, we characterize the Galactic warp and compare the geometries implied by the young stellar and CO components.

Abstract Copyright: ∼

Journal keyword(s): Galaxy: Disk - Galaxy: Structure - Galaxy: Open Clusters and Associations: General

VizieR on-line data: <Available at CDS (J/ApJ/672/930): table3.dat>

Nomenclature: Table 3: [VMC2008] GLLL.ll+B.bb N=46.

Status at CDS : All or part of tables of objects will not be ingested in SIMBAD.

Simbad objects: 36

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Number of rows : 36
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 M 74 G 01 36 41.7451236624 +15 47 01.107512304 10.52 10.00 9.46 9.16   ~ 1934 1
2 NAME Per Arm PoG 03 30 +45.0           ~ 1672 0
3 NGC 2129 OpC 06 01 06.6 +23 20 04   7.31 6.7     ~ 120 0
4 NGC 2232 OpC 06 27 45.6 -04 44 26           ~ 212 0
5 Cl Ruprecht 1 OpC 06 36 22.0 -14 09 08           ~ 44 0
6 SH 2-283 HII 06 38 29 +00 42.3           ~ 49 0
7 LBN 1014 HII 06 45.9 -07 18           ~ 22 0
8 Cl VDB 92 OpC 07 04 11.3 -11 27 06           ~ 43 1
9 NAME Auner 1 OpC 07 04 14.4 -19 45 01           ~ 30 0
10 C 0703-283 OpC 07 05 58 -28 24.6           ~ 13 0
11 Cl Haffner 4 OpC 07 06 02.8 -15 00 24           ~ 37 0
12 Cl Ruprecht 10 OpC 07 06 27.5 -20 08 05           ~ 23 0
13 Cl Berkeley 76 OpC 07 06 40.4 -11 43 54           ~ 22 0
14 NAME CMa Dwarf Galaxy G 07 12.6 -27 40     -0.1     ~ 203 1
15 ESO 428-24 OpC 07 22 56.3 -29 29 59           ~ 41 0
16 SH 2-305 HII 07 30 04.1 -18 32 13           ~ 55 0
17 LBN 1053 HII 07 31 48.0 -19 26 05           ~ 25 0
18 ESO 429-3 OpC 07 35 25.5 -27 42 33           ~ 34 0
19 NGC 2439 OpC 07 40 46.5 -31 41 36   7.31 6.9     ~ 150 0
20 ESO 429-15 OpC 07 42 26.50 -31 27 54.7           ~ 9 1
21 NAME GUM Nebula ISM 07 43 -42.1           ~ 454 1
22 NAME IRAS Vela Shell IR 07 44 -42.4           ~ 42 0
23 Cl Haffner 15 OpC 07 45 30.8 -32 50 29   10.68 9.4     ~ 39 0
24 Cl Ruprecht 35 OpC 07 46 12.1 -31 17 02           ~ 28 0
25 Cl Haffner 16 OpC 07 50 20.5 -25 27 17   10.14 10.0     ~ 56 0
26 Cl VDBH 33 OpC 08 31 20.4 -38 38 16           ~ 48 0
27 NAME Vela SNR 08 34.0 -45 50           ~ 1331 2
28 Cl Pismis 8 OpC 08 41 36.2 -46 16 01   10.10 9.5     ~ 47 0
29 NAME VELA MOL RIDGE MoC 08 53 -45.0           ~ 178 0
30 C 0920-509 Cl* 09 22 07 -51 06.1   10.77 10.2     ~ 15 1
31 NGC 3766 OpC 11 36 13.5 -61 36 42   5.66 5.3     ~ 222 0
32 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
33 NAME Cyg Arm PoG 20 02 +40.0           ~ 163 0
34 NAME Outer Arm PoG 21 48 +69.4           ~ 370 0
35 NAME Local Arm reg ~ ~           ~ 649 0
36 NAME Vela Field reg ~ ~           ~ 200 0

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