J/ApJ/926/132 Pleiades members & escapee candidates with Gaia EDR3 (Heyl+, 2022)
Reconstructing the Pleiades with Gaia EDR3.
Heyl J., Caiazzo I., Richer H.B.
<Astrophys. J., 926, 132 (2022)>
=2022ApJ...926..132H 2022ApJ...926..132H
ADC_Keywords: Clusters, open; Magnitudes; Optical; Positional data; Colors
Keywords: White dwarf stars ; Open star clusters ; Young star clusters ;
Astrometry
Abstract:
We search through an eight million cubic parsec volume surrounding the
Pleiades star cluster and the Sun to identify both the current and
past members of the Pleiades cluster within the Gaia EDR3 data set. We
find nearly 1300 current cluster members and 289 former cluster
candidates. Many of these candidates lie well in front of or behind
the cluster from our point of view, so formerly they were considered
cluster members, but their parallaxes put them more than 10pc from the
center of the cluster today. Over the past 100Myr we estimate that the
cluster has lost twenty percent of its mass including two massive
white dwarf stars and the α2 Canum Venaticorum type variable
star, 41 Tau. All three white dwarfs associated with the cluster are
massive (1.01-1.06M ☉) and have progenitors with main-sequence
masses of about six solar masses. Although we did not associate any
giant stars with the cluster, the cooling time of the oldest white
dwarf of 60Myr gives a firm lower limit on the age of the cluster.
Objects:
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RA (ICRS) DE Designation(s)
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03 46 24.24 +24 06 50.4 Pleiades = NAME Pleiades
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 102 1272 Catalogue of current Pleiades stars
table5.dat 140 289 Catalogue of Pleiades-escapee candidates
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See also:
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
I/350 : Gaia EDR3 (Gaia Collaboration, 2020)
J/A+A/331/81 : Hyades membership (Perryman+ 1998)
J/AJ/132/1221 : VJHK and SDSS photometry of DA white dwarfs (Holberg+, 2006)
J/ApJ/743/138 : Spectroscopic survey of bright white dwarfs (Gianninas+, 2011)
J/ApJ/730/128 : Spectroscopy of DA WD from the SDSS-DR4 (Tremblay+, 2011)
J/ApJ/758/56 : Young M dwarfs within 25pc. II. Kinematics (Shkolnik+, 2012)
J/A+A/616/A10 : 46 open clusters GaiaDR2 HR diag. (Gaia Collaboration, 2018)
J/A+A/623/A35 : A 3D view of the Hyades population (Lodieu+, 2019)
J/A+A/628/A66 : alpha Persei, Pleiades and Praesepe clusters (Lodieu+, 2019)
J/ApJ/901/93 : Model atm. analysis of hot WDs from SDSS DR12 (Bedard+, 2020)
J/A+A/638/A131 : Radial velocities of 643 DA white dwarfs (Napiwotzki+, 2020)
J/A+A/645/A84 : Coronae of nearby star clusters (Meingast+, 2021)
J/ApJ/912/165 : Massive white dwarfs in young star clusters (Richer+, 2021)
Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 17 I17 --- GaiaEDR3 Gaia EDR3 source identifier
19- 25 F7.4 deg RAdeg [52.5/61.2] Right Ascension (ICRS)
at Epoch 2016.0
27- 33 F7.4 deg DEdeg [20/28] Declination (ICRS) at Epoch 2016.0
35- 42 F8.4 mag Gmag [3.86/20.6]?=-99.99 Gaia EDR3 G band magnitude
44- 51 F8.4 mag e_Gmag [0.0001/0.02]?=-99.99 Uncertainty in Gmag
53- 56 F4.2 mas plx [6.8/8] Gaia EDR3 parallax
58- 61 F4.2 mas e_plx [0.01/1.3] Uncertainty in plx
63- 70 F8.4 mag Bp-Rp [-0.41/4.1]?=-99.99 Gaia EDR3 Bp-Rp color
72- 79 F8.4 mag e_Bp-Rp [0/0.4]?=-99.99 Uncertainty in Bp-Rp
81- 85 F5.2 mas/yr pmRA [15.79/24.1] Gaia EDR3 proper motion in RA
87- 90 F4.2 mas/yr e_pmRA [0.02/2] Uncertainty in pmRA
92- 97 F6.2 mas/yr pmDE [-50.1/-40.7] Gaia EDR3 proper motion in DE
99-102 F4.2 mas/yr e_pmDE [0.01/1.2] Uncertainty in pmDE
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 19 I19 --- GaiaEDR3 Gaia EDR3 source identifier
21- 28 F8.4 deg RAdeg [7.6/328] Right Ascension (ICRS)
at Epoch 2016.0
30- 37 F8.4 deg DEdeg [-68.4/87.2] Declination (ICRS)
at Epoch 2016.0
39- 45 F7.4 mag Gmag [5/20.6] Gaia EDR3 G band magnitude
47- 52 F6.4 mag e_Gmag [0.0001/0.008] Uncertainty in Gmag
54- 58 F5.2 mas plx [5/29.5] Gaia EDR3 parallax
60- 63 F4.2 mas e_plx [0.01/1.2] Uncertainty in plx
65- 72 F8.4 mag Bp-Rp [-0.5/4.1]?=-99.99 Gaia EDR3 Bp-Rp color
74- 81 F8.4 mag e_Bp-Rp [0/0.3]?=-99.99 Uncertainty in Bp-Rp
83- 89 F7.2 mas/yr pmRA [-101/96.5] Gaia EDR3 proper motion in RA
91- 94 F4.2 mas/yr e_pmRA [0.01/1.3] Uncertainty in pmRA
96- 102 F7.2 mas/yr pmDE [-171.6/37.5] Gaia EDR3 proper motion in DE
104- 107 F4.2 mas/yr e_pmDE [0.01/0.9] Uncertainty in pmDE
109- 112 F4.2 km/s Delv2D [0.05/2.3] Relative velocity within the
plane of the sky wrt cluster
114- 118 F5.1 pc dpres [10/195] Distance of each star relative to
cluster
120- 124 F5.1 km/s Vr [-30.5/33.2] Magnitude of the reconstructed
radial velocity
126- 129 F4.1 pc dmin [0/15] Minimum distance of star from cluster
at tmin
131- 134 F4.2 km/s Delv3D [0.09/2.4] Reconstructed 3D velocity of the
star relative to cluster
136- 140 F5.1 Myr tesc [1.4/139.3] Time before the present when the
star and cluster were closest together
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 31-Oct-2023