2013MNRAS.432.2895H

Query : 2013MNRAS.432.2895H

2013MNRAS.432.2895H - Mon. Not. R. Astron. Soc., 432, 2895-2908 (2013/July-2)

Tracing the structure of the Milky way with detached eclipsing binaries from the VVV survey - I. The method and initial results.

HELMINIAK K.G., DEVOR J., MINNITI D. and SYBILSKI P.

Abstract (from CDS):

We present the first results of a project aiming to trace the spatial structure of the Milky Way using detached eclipsing binaries (DEBs) as distance indicators. A sample of DEBs from the OGLE-II catalogue was selected and their near-infrared photometry was taken from the Vista Variables in the Via Lactea (VVV) survey. The I-band OGLE-II light curves are used to create models of the DEBs, which together with the VVV photometry are compared with a set of theoretical isochrones. After correcting for stellar reddening, we find a set of absolute physical parameters of components of a given binary, including absolute magnitudes and distances.

With this approach we can calculate the distances with the precision better than 5percent. Even though we have a few systems, the distribution is not homogeneous along the line of sight, and appears to follow the overall structure of the Galaxy - several spiral arms and the bulge are distinguishable. A number of systems can be seen behind the bulge, reaching even the distance to the Sagittarius dwarf galaxy.


Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): binaries: eclipsing - Galaxy: structure

Simbad objects: 39

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Number of rows : 39
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 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
2 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
3 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
4 NAME Sagittarius Stream St* 02 22 +00.0           ~ 1001 0
5 NAME Per Arm PoG 03 30 +45.0           ~ 1672 0
6 Cl Melotte 22 OpC 03 46 38.0 +24 10 41           ~ 3679 0
7 V* V1229 Tau SB* 03 47 29.4536404848 +24 17 18.019635504   6.87 6.81   6.74 A0VpSi+Am 225 0
8 NAME Nor Arm PoG 16 00 -50.0           ~ 485 0
9 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
10 OGLE BLG-ECL-108965 EB* 17 47 43.9917013200 -22 59 00.618295884     19.32   17.39 ~ 5 0
11 OGLE BLG604.8 89335 EB* 17 48 29.90 -35 26 42.7     16.96   15.46 ~ 5 0
12 OGLE BLG-ECL-132932 EB* 17 50 51.0869751360 -33 38 16.854358164     17.77   16.00 ~ 6 0
13 OGLE BLG-ECL-148675 EB* 17 52 23.0494930848 -33 01 55.886826072     17.81   15.95 ~ 6 0
14 OGLE BLG-ECL-161312 EB* 17 53 26.9983184280 -30 08 25.677185208     17.14   15.79 ~ 5 0
15 OGLE BLG-ECL-171354 EB* 17 54 15.6846529536 -33 03 18.389519244     18.429   16.923 ~ 6 0
16 OGLE BUL-SC22 105532 EB* 17 56 28.0556401056 -30 47 06.358512480     18.530   16.769 ~ 5 0
17 OGLE BLG-ECL-197442 EB* 17 56 29.6143775088 -30 31 50.425755816     18.15   15.93 ~ 4 0
18 OGLE BLG507.21 61167 EB* 17 57 35.5195765963 -31 30 56.570277573     17.17   15.47 ~ 6 0
19 OGLE BLG-ECL-217249 EB* 17 58 10.9905745662 -31 19 44.346638597     19.54   17.24 ~ 5 0
20 OGLE BWC V156 EB* 18 03 30.5077311360 -29 55 13.429598520     18.68   17.305 ~ 7 0
21 OGLE BLG-ECL-311391 EB* 18 06 47.1920608677 -26 51 15.483824509     17.46   16.13 ~ 4 0
22 OGLE BLG-ECL-315051 EB* 18 07 09.5266482000 -26 56 00.504751236     19.88   18.21 ~ 3 0
23 OGLE BLG-ECL-316171 EB* 18 07 16.4316764160 -27 03 16.764016104     16.27   15.12 ~ 4 0
24 OGLE BLG-ECL-330230 EB* 18 08 47.2463230944 -26 26 27.713329836     17.90   16.27 ~ 4 0
25 OGLE BLG-ECL-335236 EB* 18 09 21.4723558419 -26 25 51.738927053     18.24   16.32 ~ 5 0
26 OGLE BLG-ECL-341070 EB* 18 10 01.4140556352 -26 21 58.119584544     18.69   16.99 ~ 4 0
27 OGLE BLG-ECL-351038 EB* 18 11 11.4594046776 -26 40 19.237338516     17.52   16.23 ~ 5 0
28 OGLE BLG-ECL-388395 EB* 18 16 01.4937546432 -23 33 22.051086696     18.76   15.83 ~ 5 0
29 OGLE BUL-SC12 461341 EB* 18 16 26.54 -24 00 08.6     19.563   17.492 ~ 4 0
30 OGLE BLG-ECL-410747 EB* 18 19 51.4234417704 -22 31 25.144233816     18.86   16.97 ~ 5 0
31 OGLE BUL-SC11 37306 EB* 18 20 46.0389047568 -22 30 35.007725052     18.17   16.54 ~ 3 0
32 OGLE BLG-ECL-415846 EB* 18 20 54.2072467032 -22 21 49.931989632     17.49   16.02 ~ 3 0
33 OGLE BUL-SC11 277611 EB* 18 21 14.62 -22 19 49.6     19.90   17.91 ~ 3 0
34 M 54 GlC 18 55 03.33 -30 28 47.5           ~ 1164 0
35 NAME SDG G 18 55 19.0 -30 32 43   4.5 3.6     ~ 2438 2
36 NAME Sgr Arm PoG 19 00 -30.0           ~ 710 1
37 NAME Galactic Bulge reg ~ ~           ~ 4794 0
38 NAME Sct-Cen PoG ~ ~           ~ 286 0
39 NAME Local Group GrG ~ ~           ~ 9325 0

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