2018A&A...615A..12Y


Query : 2018A&A...615A..12Y

2018A&A...615A..12Y - Astronomy and Astrophysics, volume 615A, 12-12 (2018/7-1)

Reanalysis of nearby open clusters using Gaia DR1/TGAS and HSOY.

YEN S.X., REFFERT S., SCHILBACH E., ROSER S., KHARCHENKO N.V. and PISKUNOV A.E.

Abstract (from CDS):


Context. Open clusters have long been used to gain insights into the structure, composition, and evolution of the Galaxy. With the large amount of stellar data available for many clusters in the Gaia era, new techniques must be developed for analyzing open clusters, as visual inspection of cluster color-magnitude diagrams is no longer feasible. An automatic tool will be required to analyze large samples of open clusters.
Aims. We seek to develop an automatic isochrone-fitting procedure to consistently determine cluster membership and the fundamental cluster parameters.
Methods. Our cluster characterization pipeline first determined cluster membership with precise astrometry, primarily from TGAS and HSOY. With initial cluster members established, isochrones were fitted, using a χ2 minimization, to the cluster photometry in order to determine cluster mean distances, ages, and reddening. Cluster membership was also refined based on the stellar photometry. We used multiband photometry, which includes ASCC-2.5 BV, 2MASS JHKs, and Gaia G band.
Results. We present parameter estimates for all 24 clusters closer than 333pc as determined by the Catalogue of Open Cluster Data and the Milky Way Star Clusters catalog. We find that our parameters are consistent to those in the Milky Way Star Clusters catalog.
Conclusions. We demonstrate that it is feasible to develop an automated pipeline that determines cluster parameters and membership reliably. After additional modifications, our pipeline will be able to use Gaia DR2 as input, leading to better cluster memberships and more accurate cluster parameters for a much larger number of clusters.

Abstract Copyright: © ESO 2018

Journal keyword(s): open clusters and associations: general - galaxies: star clusters: general - Galaxy: fundamental parameters

VizieR on-line data: <Available at CDS (J/A+A/615/A12): table1.dat files/*>

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

Simbad objects: 29

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Number of rows : 29
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 Cl Blanco 1 OpC 00 03 25 -29 57.5           ~ 276 0
2 NAME HIP 5671 Cluster MGr 01 13 50 +32 01.7           ~ 28 0
3 Cl Melotte 20 OpC 03 26 28 +48 58.5           ~ 795 0
4 Cl Alessi 13 OpC 03 27 03 -35 49.3           ~ 56 0
5 Cl Melotte 22 OpC 03 46 24 +24 06.8           ~ 3185 0
6 NAME HIP 21974 Cluster OpC 04 39 54 +71 16.8           ~ 33 0
7 NAME HIP 23784 Cluster OpC 05 07 22 +22 16.7           ~ 23 0
8 Cl Collinder 65 OpC 05 26 06 +16 42.0           ~ 30 0
9 NGC 2232 OpC 06 27 33 -04 44.9           ~ 151 0
10 HD 45516 * 06 27 47.6163029448 -04 49 28.967702592   7.75 7.79     B8V 27 0
11 Cl Alessi 3 OpC 07 17 06 -46 08.5           ~ 35 0
12 NGC 2451A OpC 07 42 57 -38 15.8           ~ 100 0
13 NGC 2632 OpC 08 40 13 +19 37.3           ~ 1385 0
14 IC 2391 OpC 08 41 10 -52 59.5           ~ 766 0
15 Cl Platais 8 OpC 09 06 52 -58 41.1           ~ 55 0
16 NAME HIP 45189 Cluster OpC 09 16 58 -43 51.7           ~ 39 0
17 HD 92896 ** 10 41 59.65270 -63 30 26.2741           A3IV 29 0
18 IC 2602 OpC 10 42 27 -64 25.6           ~ 611 0
19 Cl Melotte 111 OpC 12 24 03 +25 39.1           ~ 439 0
20 NAME Coma Dwarf Galaxy G 12 26 59.0 +23 54 15     14.1     ~ 413 1
21 Cl Platais 10 OpC 13 40 53 -59 16.3           ~ 30 0
22 Cl Alessi 9 OpC 17 43 54 -47 01.7           ~ 32 0
23 Cl Collinder 350 OpC 17 48 04 +01 31.5     6.1     ~ 33 0
24 HD 320875 * 17 53 08.2715548800 -34 59 07.991372040   11.08 10.63     F0 14 0
25 NGC 6475 OpC 17 53 47 -34 50.5           ~ 355 0
26 NGC 6774 OpC 19 16 21 -16 20.0           ~ 129 0
27 NGC 7092 26 * 21 30 33.0841645392 +48 40 44.218201548   12.81 12.45     ~ 3 0
28 NGC 7092 OpC 21 31 33 +48 14.8           ~ 202 0
29 [KPR2005] 123 OpC 22 41 12 +53 59.2           ~ 27 0

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2022.05.28-23:16:27

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