2019A&A...628A..66L


Query : 2019A&A...628A..66L

2019A&A...628A..66L - Astronomy and Astrophysics, volume 628A, 66-66 (2019/8-1)

A 5D view of the α Per, Pleiades, and Praesepe clusters.

LODIEU N., PEREZ-GARRIDO A., SMART R.L. and SILVOTTI R.

Abstract (from CDS):


Aims. Our scientific goal is to provide revised membership lists of the α Per, Pleiades, and Praesepe clusters exploiting the second data release of Gaia and produce five-dimensional maps (α, δ, π, µα cos δ, µδ) of these clusters.
Methods. We implemented the kinematic method combined with the statistical treatment of parallaxes and proper motions to identify astrometric member candidates of three of the most nearby and best studied open clusters in the sky. Results. We cross-correlated the Gaia catalogue with large-scale public surveys to complement the astrometry of Gaia with multi-band photometry from the optical to the mid-infrared. We identified 517, 1248, and 721 bona fide astrometric member candidates inside the tidal radius of α Per, the Pleiades, and Praesepe, respectively. We cross-matched our final samples with catalogues from previous surveys to address the level of completeness. We update the main physical properties of the clusters, including mean distance and velocity, as well as core, half-mass, and tidal radii. We infer updated ages from the white dwarf members of the Pleiades and Praesepe. We derive the luminosity and mass functions of the three clusters and compare them to the field mass function. We compute the positions in space of all member candidates in the three regions to investigate their distribution in space.Conclusions. We provide updated distances and kinematics for the three clusters. We identify a list of members in the α Per, Pleiades, and Praesepe clusters from the most massive stars all the way down to the hydrogen-burning limit with a higher confidence and better astrometry than previous studies. We produce complete 5D maps of stellar and substellar bona fide members in these three regions. The photometric sequences derived in several colour-magnitude diagrams represent benchmark cluster sequences at ages from 90 to 600Myr. We note the presence of a stream around the Pleiades cluster extending up to 40 pc from the cluster centre.

Abstract Copyright: © ESO 2019

Journal keyword(s): stars: low-mass - brown dwarfs - surveys - open clusters and associations: individual: alpha Persei - open clusters and associations: individual: Pleiades - open clusters and associations: individual: Praesepe

VizieR on-line data: <Available at CDS (J/A+A/628/A66): alphaper.dat pleiades.dat praesepe.dat>

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 19

goto Full paper

goto View the references in ADS

Number of rows : 19
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 Cl Melotte 20 OpC 03 26 28.1 +48 58 30           ~ 843 0
2 Cl Melotte 22 OpC 03 46 24.2 +24 06 50           ~ 3357 0
3 GD 50 WD* 03 48 50.1859724280 -00 58 32.290187664 12.596 13.787 14.063 14.210 14.388 DA1.2 256 1
4 EGGR 25 WD* 03 52 11.3301458285 +24 55 48.797718780 15.42 16.32 16.52     DA1.5 81 0
5 Cl Melotte 25 OpC 04 29 47.3 +16 56 53           ~ 2994 0
6 Cl* NGC 2632 DPN 1 WD* 08 36 10.0232301648 +19 38 18.734394228           DA 31 0
7 LB 5893 WD* 08 39 36.4894448736 +19 30 43.660631664 16.70 17.57 17.63   18.00 DA2.5 41 0
8 EGGR 59 WD* 08 39 45.5747385840 +20 00 15.827498388   18.01 17.85 18.4   DAH 53 0
9 EGGR 60 WD* 08 39 47.2132332384 +19 46 11.963822952   18.4 18.23 18.9   DA 38 0
10 NGC 2632 OpC 08 40 13.0 +19 37 16           ~ 1504 0
11 LB 5959 WD* 08 40 13.3026682896 +18 43 26.373596232   18.9 18.15 18.6   DA 44 1
12 EGGR 61 WD* 08 40 28.0935005160 +19 43 34.488958224   17.6 17.66 17.7   DA 57 0
13 Cl* NGC 2632 DPN 3 WD* 08 40 31.4689640280 +21 40 42.732950412   18.0 18.0     DA 28 0
14 LB 1876 WD* 08 42 52.3105257384 +19 51 11.194802136   17.84 17.69     DA5 35 1
15 Cl* NGC 2632 DPN 4 WD* 08 42 58.0378306128 +18 54 35.394452028           DA 23 0
16 Cl* NGC 2632 DPN 5 WD* 08 43 21.9954726168 +20 43 30.246289104           DA 25 1
17 LB 8648 WD* 08 46 01.9035697512 +18 30 48.545909388   18.0       DA 26 0
18 M 20 OpC 18 02 42 -22 58.3           ~ 428 1
19 Cl Alessi 10 OpC 20 04 55.9 -10 33 18           ~ 32 0

To bookmark this query, right click on this link: simbad:objects in 2019A&A...628A..66L and select 'bookmark this link' or equivalent in the popup menu


2023.09.26-01:20:42

© Université de Strasbourg/CNRS

    • Contact