J/A+A/641/A51 NGC 2516 membership list (Fritzewski+, 2020)
The rotation period distribution of the rich Pleiades-age southern open cluster
NGC 2516. Existence of a representative zero-age main sequence distribution.
Fritzewski D.J., Barnes S.A., James D.J., Strassmeier K.G.
<Astron. Astrophys. 641, A51 (2020)>
=2020A&A...641A..51F 2020A&A...641A..51F (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, open ; Photometry, CCD ; Radial velocities
Keywords: stars: rotation - stars: solar-type - starspots -
stars: variables: general - techniques: photometric -
open clusters and associations: individual: NGC 2516
Abstract:
We wish to measure the cool star rotation period distribution for the
Pleiades-age rich open cluster NGC 2516 and use it to determine
whether cluster-to-cluster variations exist in otherwise identical
open clusters.
We obtained 42d-long time-series CCD photometry of NGC 2516 in the V
and Ic filters using the Yale 1m telescope at CTIO and performed a
number of related analyses, including PSF-based time-series
photometry. Our data are complemented with additional information from
several photometric datasets, literature radial velocities, and Gaia
DR2 astrometry. All available data are used to construct an integrated
membership list for NGC 2516, containing 844 stars in our ∼1 degree
field of view.
We derived 308 rotation periods for late-F to mid-M cluster members
from our photometry. We identified an additional 247 periodic M dwarf
stars from a prior study as cluster members, and used these to
construct a 555-star rotation period distribution for NGC 2516. The
colour-period diagram (in multiple colours) has almost no outliers and
exhibits the anticipated triangular shape, with a diagonal slow
rotator sequence that is preferentially occupied by the warmer stars
along with a flat fast rotator sequence that is preferentially
populated by the cooler cluster members. We also find a group of
extremely slowly rotating M dwarfs (10d<P<23d), forming a branch
in the colour-period diagram which we call the 'extended slow rotator
sequence'. This, and other features of the rotational distribution can
also be found in the Pleiades, making the colour-period diagrams of
the two clusters nearly indistinguishable. A comparison with the
well-studied (and similarly aged) open cluster M 35 indicates that the
cluster's rotational distribution is also similarly indistinguishable
from that of NGC 2516. Those for the open clusters M 50 and Blanco 1
are similar, but data issues for those clusters make the comparisons
somewhat more ambiguous. Nevertheless, we demonstrate the existence of
a representative zero-age main sequence (ZAMS) rotational distribution
and provide a simple colour-independent way to represent it. We
perform a detailed comparison of the NGC 2516 rotation period data
with a number of recent rotational evolution models. Using X-ray data
from the literature, we also construct the first rotation-activity
diagram for solar-type stars in NGC 2516, one that we find is
essentially indistinguishable from those for the Pleiades and
Blanco 1.
The two clusters NGC 2516 and Pleiades can be considered twins in
terms of stellar rotation and related properties (and M 35, M 50, and
Blanco 1 are similar), suggesting that otherwise identical open
clusters also have intrinsically similar cool star rotation and
activity distributions.
Description:
Table 2 lists radial velocity variable stars in NGC 2516 which can be
considered radial velocity binaries. Their radial velocities were
acquired from various sources in the literature (see references of
Table 2).
Table 3 includes our members of NGC 2516 upon which we based the
analysis of the rotation periods. The data are exclusively taken from
the literature and the membership is based on photometry, radial
velocities, parallax, and proper motions.
Table 4 includes rotation periods measured from our photometric
time-series campaign between 19 February 2008 and 01 April 2008 at the
CTIO Yale 1m telescope. This table lists additional periods by
Irwin et al. (2007MNRAS.377..741I 2007MNRAS.377..741I, Cat. J/MNRAS/377/741) and related
activity properties.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 95 31 Potential radial velocity binaries
table3.dat 172 844 Membership information for stars in NGC 2516
table4.dat 159 555 Rotation periods for GKM stars in NGC 2516
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See also:
J/A+A/375/863 : Photometry in NGC 2516 (Jeffries+, 2001)
J/MNRAS/377/741 : VIc photometry of NGC 2516 (Irwin+, 2007)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 33 A33 --- ID IDs from this work, separated by ;
35- 42 A8 --- --- [Gaia DR2]
44- 62 I19 --- GaiaDR2 Gaia DR2 designation
64- 68 I5 --- J01 ID from Jeffries et al. (2001A&A...375..863J 2001A&A...375..863J),
Cat. J/A+A/375/863,
Cl* NGC 2516 JTH NNNNN in Simbad
70- 75 F6.2 km/s RV Mean radial velocity
77 I1 --- o_RV [2/4] Number of radial velocity measurements
79- 83 F5.2 km/s DeltaRV Scatter around mean radial velocity
85- 87 A3 --- TypeB18 [B C S SB2] Classification by Bailey et al.
(2018MNRAS.475.1609B 2018MNRAS.475.1609B, Cat. J/MNRAS/475/1609)
89- 95 A7 --- Ref References for radial velocity data (1)
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Note (1): References for radial velocity data as follows:
1 = Jeffries et al. (1998MNRAS.300..550J 1998MNRAS.300..550J)
2 = Terndrup et al. (2002ApJ...576..950T 2002ApJ...576..950T)
3 = Jackson et al. (2016A&A...586A..52J 2016A&A...586A..52J, Cat. J/A+A/586/A52) (Gaia ESO survey)
4 = Bailey et al. (2018MNRAS.475.1609B 2018MNRAS.475.1609B, Cat. J/MNRAS/475/1609)
5 = Gaia DR2, 2018, Cat. I/345
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 47 A47 --- ID IDs from this work, separated by ;
49- 56 A8 --- --- [Gaia DR2]
58- 76 I19 --- GaiaDR2 Gaia DR2 designation
78- 82 I5 --- J01 ? ID from Jeffries et al. (2001A&A...375..863J 2001A&A...375..863J)
Cat. J/A+A/375/863,
Cl* NGC 2516 JTH NNNNN in Simbad
84- 92 F9.5 deg RAdeg Right ascension from Gaia DR2
(ICRS) at Ep=2015.5
94-102 F9.5 deg DEdeg Declination from Gaia DR2 (ICRS) at Ep=2015.5
104-109 F6.3 mag Vmag ? V magnitude (1)
111 I1 --- Vcorr [1]? flag indicating corrected V magnitude
113-117 F5.3 mag B-V ? (B-V) photometric colour (1)
119-124 F6.3 mag BP-RP ? Gaia (BP-RP) photometric colour index
126-135 F10.6 mas/yr pmRA ? Proper motion in RA from Gaia DR2, pmRA*cosDE
137-146 F10.6 mas/yr pmDE ? Proper motion in DEC from Gaia DR2
148-155 F8.6 mas Plx ? Parallax from Gaia DR2
157-162 F6.2 km/s RV ? Mean radial velocity
164 I1 --- PMmem [0/1] Proper motion membership flag
166 I1 --- PLXmem [0/1]? Parallax membership flag
168 I1 --- RVmem [0/1]? Radial velocity membership flag
170 I1 --- PHmem [0/1]? Photometric membership flag from
Jeffries+2001 (2001A&A...375..863J 2001A&A...375..863J)
172 I1 --- KNM [1]? kinematic non-membership flag
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Note (1): Photometry from Sung et al. (2002AJ....123..290S 2002AJ....123..290S, Cat. J/AJ/123/290)
and Jeffries et al. (2001A&A...375..863J 2001A&A...375..863J, Cat. J/A+A/375/863).
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 29 A29 --- ID IDs from this work, separated by ;
31- 38 A8 --- --- [Gaia DR2]
40- 58 I19 --- GaiaDR2 Gaia DR2 designation
60- 64 I5 --- J01 ? ID from Jeffries et al.
(2001A&A...375..863J 2001A&A...375..863J), Cat. J/A+A/375/863,
Cl* NGC 2516 JTH NNNNN in Simbad
66- 74 F9.5 deg RAdeg Right ascension from Gaia DR2 (ICRS)
at Ep=2015.5
76- 84 F9.5 deg DEdeg Declination from Gaia DR2 (ICRS) at Ep=2015.5
86- 91 F6.3 mag Vmag ? V magnitude (1)
93- 97 F5.3 mag B-V0 ? (B-V)0 photometric colour index (1)
99-103 F5.3 mag V-Ks0 ? (V-Ks)0 photometric colour index (1)
105-109 F5.3 mag BP-RP0 Gaia (BP-RP)0 photometric colour index
111-116 F6.3 d Prot ? Rotation period
118-122 F5.3 d e_Prot ? Uncertainty on rotation period^
124-129 F6.4 mag P90 ? Lightcurve amplitude
131 I1 --- Class [0/2]? Classification of light curve
133-138 F6.3 d ProtI07 ? Rotation period from Irwin et al.
(2007MNRAS.377..741I 2007MNRAS.377..741I,, Cat. J/MNRAS/377/741)
140-144 F5.2 --- logLx/Lbol ? Bolometric-to-X-ray luminosity ratio (2)
146-151 F6.4 --- Ro ? Rossby number
153 I1 --- PHmem [0/1]? Photometric membership flag from
Jeffries et al. (2001A&A...375..863J 2001A&A...375..863J)
155 I1 --- RVmem [0/1]? Radial velocity membership flag
157 I1 --- PLXmem [0/1]? Parallax membership flag
159 I1 --- PMmem [0/1]? Proper motion membership flag
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Note (1): B, V photometry from Sung et al. (2002AJ....123..290S 2002AJ....123..290S,
Cat. J/AJ/123/290) and Jeffries et al. (2001A&A...375..863J 2001A&A...375..863J,
Cat. J/A+A/375/863).
K_s photometry from Vista Hemisphere Survey (McMahon et al.,
(2013Msngr.154...35M 2013Msngr.154...35M, Cat. II/359) and 2MASS (II/246).
Note (2): From Pillitteri et al. (2006A&A...450..993P 2006A&A...450..993P, Cat. J/A+A/450/993) and
Damiani et al. (2003ApJ...588.1009D 2003ApJ...588.1009D, Cat. J/ApJ/588/1009).
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Acknowledgements:
Dario Fritzewski, dfritzewski(at)aip.de
(End) Patricia Vannier [CDS] 04-Jul-2020