2015A&A...581A..39S


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.08CEST02:37:33

2015A&A...581A..39S - Astronomy and Astrophysics, volume 581A, 39-39 (2015/9-1)

Global survey of star clusters in the Milky Way. IV. 63 new open clusters detected by proper motions.

SCHOLZ R.-D., KHARCHENKO N.V., PISKUNOV A.E., ROESER S. and SCHILBACH E.

Abstract (from CDS):

The global Milky Way Star Clusters (MWSC) survey provided new cluster membership lists and mean cluster parameters for nearly 80% of all previously known Galactic clusters. The MWSC data reduction pipeline involved the catalogue of positions and proper motions (PPMXL) on the International Celestial Reference System (ICRS) and near-infrared photometry from the Two Micron All Sky Survey (2MASS). In the first extension to the MWSC, photometric filters were applied to the 2MASS catalogue to find new cluster candidates that were subsequently confirmed or rejected by the MWSC pipeline. To further extend the MWSC census, particularly of nearby clusters, we aimed at discovering new clusters by conducting an almost global search in proper motion catalogues as a starting point. We first selected high-quality samples from the PPMXL and the Fourth US Naval Observatory CCD Astrograph Catalog (UCAC4) for comparison and verification of the proper motions. For 441 circular proper motion bins (radius 15mas/yr) within ±50mas/yr, the sky outside a thin Galactic plane zone (|b|<5°) was binned in small areas (``sky pixels'') of 0.25x0.25 deg2. Sky pixels with enhanced numbers of stars with a certain common proper motion in both catalogues were considered as cluster candidates. After visual inspection of the sky images, we built an automated procedure that combined these representations of the sky for neighbouring proper motion subsamples after a background correction. The 692 compact cluster candidates detected above a threshold that was equivalent to a minimum of 12 to 130 cluster stars in dependence on the Galactic latitude were then cross-checked with known star clusters and clusters of galaxies. New candidates served as input for the MWSC pipeline. About half of our candidates overlapped with known clusters (46 globular and 68 open clusters in the Galaxy, about 150 known clusters of galaxies) or the Magellanic Clouds. About 10% of our candidates are 63 new open clusters confirmed by the MWSC pipeline. They predominantly occupy the two inner Galactic quadrants and have apparent sizes and numbers of highly probable members slightly larger than those of the typically small MWSC clusters, whereas their other parameters (ages, distances, tidal radii) fall in the typical ranges. As we searched for compact clusters, we did not find new very nearby (extended) clusters, and the mean total proper motion of the new 63 clusters is with 6.3mas/yr similar to the MWSC average (5.5mas/yr). Only four new clusters have mean proper motions between 10mas/yr and our observed maximum of about 13mas/yr.

Abstract Copyright:

Journal keyword(s): catalogs - surveys - proper motions - globular clusters: general - open clusters and associations: general - Galaxy: stellar content

VizieR on-line data: <Available at CDS (J/A+A/581/A39): catalog.dat index.dat notes.dat stars/* atlas/*>

Nomenclature: [KPS2012] MWSC NNNN N=63 among (Nos 4005-4688).

Simbad objects: 79

goto Full paper

goto View the reference in ADS

Number of rows : 79

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 Cl Blanco 1 OpC 00 04 07 -29 50.0           ~ 233 0
2 [KPS2012] MWSC 4005 OpC 00 11 28 -85 28.8           ~ 3 0
3 NGC 188 OpC 00 48 26 +85 15.3           ~ 813 0
4 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9440 1
5 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 5665 1
6 ACO 426 ClG 03 19 47.2 +41 30 47           ~ 1939 1
7 Cl Melotte 20 OpC 03 26 42 +48 48.0           ~ 750 0
8 Cl Melotte 22 OpC 03 47 00 +24 07.0           ~ 2978 0
9 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14826 1
10 [KPS2012] MWSC 4114 OpC 06 07 52 -78 13.2           ~ 3 0
11 [KPS2012] MWSC 4116 OpC 06 19 12 -59 58.2           ~ 3 0
12 [KPS2012] MWSC 4119 OpC 07 06 04 -57 13.8           ~ 2 0
13 [KPS2012] MWSC 4131 OpC 08 19 18 +42 02.1           ~ 2 0
14 NGC 2632 OpC 08 40 24 +19 40.0           ~ 1224 0
15 NGC 2682 OpC 08 51 18 +11 48.0           ~ 2032 0
16 [KPS2012] MWSC 4137 OpC 09 26 12 -79 44.4           ~ 3 0
17 [KPS2012] MWSC 4138 OpC 09 27 07 -73 30.0           ~ 2 0
18 [KPS2012] MWSC 4140 OpC 09 36 36 -77 28.8           ~ 2 0
19 [KPS2012] MWSC 4146 OpC 11 00 45 -40 29.4           ~ 3 0
20 [KPS2012] MWSC 4158 OpC 12 44 28 -38 18.6           ~ 3 0
21 NGC 5139 GlC 13 26 47.28 -47 28 46.1   6.12 5.33     ~ 2996 0
22 [KPS2012] MWSC 4170 OpC 13 36 49 -39 11.1           ~ 3 0
23 M 3 GlC 13 42 11.62 +28 22 38.2     6.39     ~ 2265 0
24 [KPS2012] MWSC 4176 OpC 14 27 18 -85 25.2           ~ 3 0
25 [KPS2012] MWSC 4178 OpC 14 27 38 -44 56.7           ~ 2 0
26 [KPS2012] MWSC 4194 OpC 15 07 54 -17 25.5           ~ 2 0
27 [KPS2012] MWSC 4210 OpC 15 27 50 -36 31.2           ~ 2 0
28 [KPS2012] MWSC 4211 OpC 15 31 36 -37 29.4           ~ 2 0
29 [KPS2012] MWSC 4212 OpC 15 33 11 -30 20.1           ~ 2 0
30 [KPS2012] MWSC 4218 OpC 15 40 26 -33 28.5           ~ 3 0
31 [KPS2012] MWSC 4219 OpC 15 42 14 -83 11.7           ~ 3 0
32 [KPS2012] MWSC 4225 OpC 15 48 18 -18 18.3           ~ 2 0
33 [KPS2012] MWSC 4228 OpC 15 54 32 -30 39.6           ~ 3 0
34 [KPS2012] MWSC 4229 OpC 15 56 30 -31 43.2           ~ 3 0
35 [KPS2012] MWSC 4248 OpC 16 12 45 -29 54.3           ~ 3 0
36 M 4 GlC 16 23 35.22 -26 31 32.7           ~ 1676 0
37 [KPS2012] MWSC 4265 OpC 16 29 04 -19 09.3           ~ 2 0
38 [KPS2012] MWSC 4267 OpC 16 29 26 -20 08.4           ~ 2 0
39 [KPS2012] MWSC 4286 OpC 16 41 33 -30 32.1           ~ 3 0
40 [KPS2012] MWSC 4287 OpC 16 42 36 -24 27.6           ~ 2 0
41 [KPS2012] MWSC 4288 OpC 16 44 11 -00 08.1           ~ 2 0
42 [KPS2012] MWSC 4289 OpC 16 46 05 -20 56.4           ~ 2 0
43 [KPS2012] MWSC 4290 OpC 16 46 37 -09 11.7           ~ 2 0
44 [KPS2012] MWSC 4301 OpC 16 59 20 +18 21.6           ~ 3 0
45 [KPS2012] MWSC 4312 OpC 17 06 30 -19 26.7           ~ 3 0
46 [KPS2012] MWSC 4317 OpC 17 10 28 +01 15.9           ~ 2 0
47 [KPS2012] MWSC 4316 OpC 17 10 28 +51 34.2           ~ 2 0
48 [KPS2012] MWSC 4330 OpC 17 17 02 -15 04.8           ~ 3 0
49 [KPS2012] MWSC 4349 OpC 17 27 02 -57 31.5           ~ 2 0
50 [KPS2012] MWSC 4355 OpC 17 30 36 -23 56.1           ~ 3 0
51 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11535 0
52 [KPS2012] MWSC 4375 OpC 17 52 57 +09 30.9           ~ 2 0
53 [KPS2012] MWSC 4383 OpC 17 58 44 +23 03.0           ~ 2 0
54 [KPS2012] MWSC 4409 OpC 18 15 22 +31 43.5           ~ 2 0
55 [KPS2012] MWSC 4408 OpC 18 15 30 -60 12.9           ~ 2 0
56 [KPS2012] MWSC 4410 OpC 18 17 02 -53 41.4           ~ 2 0
57 [KPS2012] MWSC 4429 OpC 18 35 35 -51 44.7           ~ 2 0
58 [KPS2012] MWSC 4463 OpC 18 58 55 -64 15.9           ~ 3 0
59 NAME Sgr Arm PoG 19 00 -30.0           ~ 523 1
60 [KPS2012] MWSC 4475 OpC 19 08 10 -30 13.8           ~ 3 0
61 NGC 6774 OpC 19 16 42 -16 17.0           ~ 80 0
62 [KPS2012] MWSC 4483 OpC 19 17 08 -68 31.5           ~ 3 0
63 [KPS2012] MWSC 4484 OpC 19 22 19 -25 00.6           ~ 3 0
64 [KPS2012] MWSC 4486 OpC 19 24 00 -60 43.5           ~ 2 0
65 [KPS2012] MWSC 4498 OpC 19 32 00 -46 26.1           ~ 3 0
66 [KPS2012] MWSC 4500 OpC 19 33 22 -33 14.1           ~ 3 0
67 [KPS2012] MWSC 4511 OpC 19 41 38 -24 27.3           ~ 2 0
68 [KPS2012] MWSC 4545 OpC 20 07 50 -49 51.6           ~ 3 0
69 [KPS2012] MWSC 4547 OpC 20 12 13 +01 31.5           ~ 2 0
70 [KPS2012] MWSC 4555 OpC 20 17 33 -11 21.0           ~ 3 0
71 [KPS2012] MWSC 4561 OpC 20 23 53 +05 54.0           ~ 2 0
72 [KPS2012] MWSC 4572 OpC 20 31 00 -15 10.5           ~ 3 0
73 [KPS2012] MWSC 4602 OpC 21 02 46 +10 45.9           ~ 3 0
74 [KPS2012] MWSC 4606 OpC 21 06 07 -11 28.2           ~ 3 0
75 [KPS2012] MWSC 4622 OpC 21 26 02 -17 45.0           ~ 3 0
76 [KPS2012] MWSC 4668 OpC 22 56 56 -77 10.2           ~ 3 0
77 [KPS2012] MWSC 4674 OpC 23 22 08 +84 00.6           ~ 3 0
78 [KPS2012] MWSC 4682 OpC 23 43 23 -82 57.6           ~ 3 0
79 [KPS2012] MWSC 4688 OpC 23 51 54 -86 43.2           ~ 3 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2015A&A...581A..39S and select 'bookmark this link' or equivalent in the popup menu


2020.07.08-02:37:33

© Université de Strasbourg/CNRS

    • Contact