2020A&A...640A...1C


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.24CEST09:36:53

2020A&A...640A...1C - Astronomy and Astrophysics, volume 640A, 1-1 (2020/8-1)

Painting a portrait of the Galactic disc with its stellar clusters.

CANTAT-GAUDIN T., ANDERS F., CASTRO-GINARD A., JORDI C., ROMERO-GOMEZ M., SOUBIRAN C., CASAMIQUELA L., TARRICQ Y., MOITINHO A., VALLENARI A., BRAGAGLIA A., KRONE-MARTINS A. and KOUNKEL M.

Abstract (from CDS):


Context. The large astrometric and photometric survey performed by the Gaia mission allows for a panoptic view of the Galactic disc and its stellar cluster population. Hundreds of stellar clusters were only discovered after the latest Gaia data release (DR2) and have yet to be characterised.
Aims. Here we make use of the deep and homogeneous Gaia photometry down to G=18 to estimate the distance, age, and interstellar reddening for about 2000 stellar clusters identified with Gaia DR2 astrometry. We use these objects to study the structure and evolution of the Galactic disc.
Methods. We relied on a set of objects with well-determined parameters in the literature to train an artificial neural network to estimate parameters from the Gaia photometry of cluster members and their mean parallax.
Results. We obtain reliable parameters for 1867 clusters. Our catalogue confirms the relative lack of old stellar clusters in the inner disc (with a few notable exceptions). We also quantify and discuss the variation of scale height with cluster age, and we detect the Galactic warp in the distribution of old clusters.
Conclusions. This work results in a large and homogeneous cluster catalogue, allowing one to trace the structure of the disc out to distances of ∼4kpc. However, the present sample is still unable to trace the outer spiral arm of the Milky Way, which indicates that the outer disc cluster census might still be incomplete.

Abstract Copyright: © ESO 2020

Journal keyword(s): open clusters and associations: general - Galaxy: disk

VizieR on-line data: <Available at CDS (J/A+A/640/A1): table1.dat nodup.dat>

Status at CDS : Tables of objects will be appraised for possible ingestion in SIMBAD.

Simbad objects: 38

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Number of rows : 38

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 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 11053 1
2 [KBT2017] Gaia 2 Cl* 01 52.5 +53 02           ~ 10 0
3 NAME Per Arm PoG 03 30 +45.0           ~ 1277 0
4 Cl Melotte 22 OpC 03 47 00 +24 07.0           ~ 3024 0
5 Cl Melotte 25 OpC 04 26 54.00 +15 52 00.0           ~ 2695 0
6 NGC 1579 HII 04 30 11 +35 16.7           ~ 73 1
7 Cl Berkeley 20 OpC 05 32 37.0 +00 11 18           ~ 100 0
8 Cl Berkeley 29 OpC 06 53 04.2 +16 55 39   14.3       ~ 142 0
9 Cl Berkeley 32 OpC 06 58 06 +06 26.0           ~ 109 0
10 NAME Saurer A Cluster OpC 07 20.9 +01 48           ~ 55 0
11 [KPS2012] MWSC 1448 OpC 08 12 00 -29 00.0           ~ 5 0
12 C 0810-277 OpC 08 12 27 -27 53.4           ~ 11 0
13 NGC 2632 OpC 08 40 24 +19 40.0           ~ 1259 0
14 [KPS2012] MWSC 1626 OpC 09 05 46 -37 52.5           ~ 5 0
15 Cl Westerlund 2 OpC 10 23 58.1 -57 45 49   11.59 10.5     ~ 287 0
16 NGC 3293 OpC 10 35 49 -58 13.8   4.84 4.7     ~ 283 0
17 Cl Melotte 111 OpC 12 25 06.00 +26 06 00.0           ~ 413 0
18 Cl Collinder 261 OpC 12 38 11.5 -68 22 01     10.7     ~ 159 0
19 Cl Trumpler 20 OpC 12 39 45 -60 38.1     10.1     ~ 76 0
20 NGC 4815 OpC 12 58 01 -64 57.6   9.61 8.6     ~ 73 0
21 ESO 96-4 OpC 13 15 16.0 -65 55 16           ~ 37 0
22 Cl Pismis 18 OpC 13 36 56 -62 03.9   10.30 9.7     ~ 37 0
23 NGC 6005 OpC 15 55 59 -57 26.4   11.90 10.7     ~ 36 0
24 Cl Trumpler 23 OpC 16 00 52 -53 32.0     11.2     ~ 29 0
25 Cl Westerlund 1 OpC 16 47 04.00 -45 51 04.9           ~ 479 0
26 Teutsch 84 OpC 17 04 20.1 -42 04 24           ~ 9 0
27 Cl VDBH 222 OpC 17 18 45 -38 17.7           ~ 20 0
28 Cl Ruprecht 126 OpC 17 35 01 -34 18.3           ~ 11 0
29 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11760 0
30 C 1749-295 OpC 17 52 43 -29 33.0           ~ 19 0
31 NGC 6583 OpC 18 15 49 -22 08.0     10.0     ~ 48 0
32 Cl Gulliver 41 OpC 18 30 52 -12 25.7           ~ 3 0
33 NGC 6705 OpC 18 51 05 -06 16.2   6.32 5.8     ~ 359 0
34 NAME Sgr Arm PoG 19 00 -30.0           ~ 530 1
35 NGC 6791 OpC 19 20 53 +37 46.3   10.52 9.5     ~ 879 0
36 NGC 6802 OpC 19 30 36.0 +20 15 34   10.07 8.8     ~ 79 0
37 NAME Cyg Arm PoG 20 02 +40.0           ~ 143 0
38 NAME Galactic Bar reg ~ ~           ~ 918 0

    Equat.    Gal    SGal    Ecl

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2020.10.24-09:36:53

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