J/A+A/498/949 Velocities of 1253 F-K dwarfs in open clusters (Mermilliod+, 2009)
Radial- and rotational velocities for 1253 F-K dwarfs in 13 nearby open
clusters.
Mermilliod J.-C., Mayor M., Udry S.
<Astron. Astrophys. 498, 949 (2009)>
=2009A&A...498..949M 2009A&A...498..949M
ADC_Keywords: Clusters, open ; Stars, dwarfs ; Radial velocities
Keywords: galaxy: open clusters and associations: general - stars: late-type -
stars: binaries: spectroscopic - techniques: radial velocities
Abstract:
A long-term monitoring of solar-type dwarfs in 13 nearby open
clusters, d<500pc, was conducted during 19 years, but most
individual radial velocities were not published, with the exception of
a small number of spectroscopic binaries. The program was designed to
study the membership, the duplicity, and to search for new members.
We obtained 6070 radial velocities during 19 years at the
Haute-Provence Observatory (France) and 1130 during 13 years at ESO La
Silla (Chile) for 1253 stars in the field of 13 open clusters. The
zero point of the CORAVEL radial velocity system has been improved and
the new values supersede those published previously.
The membership and binarity of solar-type stars in NGC 1976 (Orion),
IC 2602, NGC 7092, and NGC 2682 are briefly discussed.
For the whole sample, we confirm the membership of 894 stars and
discovered 150 new spectroscopic binaries among them. Added to those
already known in the Hyades and Coma Berenices, the number of member
spectroscopic binaries amounts to 188. The overall binary frequency is
30% (188/618) for stars with at least 2 measurements. IC 2602 may
represent an exception because no spectroscopic binaries were found
among the 26 members. New orbital elements were computed with the
updated values of the radial velocities for 66 systems, representing
55 members and 11 non-members.
This paper is the last one from our team reporting CORAVEL radial
velocities of solar-type dwarfs in nearby open clusters. All CORAVEL
observations for dwarfs and red giants in open clusters are now
available in electronic form.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table8.dat 182 61 Orbital elements
table11.dat 123 1259 Mean radial and rotational velocities
table10.dat 80 8149 Individual radial velocities
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See also:
J/A+A/399/543 : IC 2488 photometry and Coravel observations (Claria+, 2003)
J/A+A/430/165 : Radial velocities for 6691 K and M giants (Famaey+, 2005)
J/A+AS/107/39 : IC 2714 UBV photometry (Claria+ 1994)
J/AJ/114/1087 : Omega Cen radial velocities (Mayor+ 1997)
J/MNRAS/377/1737 : BVI photometry of NGC 2489 (Piatti+, 2007)
Byte-by-byte Description of file: table8.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Cluster Cluster designation
13- 16 I4 --- WEBDA Star designation (WEBDA)
19- 29 F11.6 d P0 Orbital period
32- 40 F9.3 d T0 T at periastron - 240000.
42- 48 F7.2 km/s gamma Systemic radial velocity
51- 55 F5.3 --- e Eccentricity
58- 63 F6.2 deg Omega ? Angle omega
66- 70 F5.2 km/s K1 Amplitude (A)
73- 77 F5.2 km/s K2 ? Amplitude (B)
80- 87 F8.6 solMass f(m) Mass function
90- 97 F8.4 Gm asini semi major axis
101-104 F4.2 km/s O-C sigma (observed - calculated)
108-109 I2 --- Nobs Number of observations
111-120 F10.6 d e_P0 rms uncertainty on P0
122-128 F7.3 d e_T0 rms uncertainty on T0
130-133 F4.2 km/s e_gamma rms uncertainty on gamma
135-139 F5.3 --- e_e ? rms uncertainty on eccentricity
141-145 F5.2 deg e_Omega ? rms uncertainty on omega
147-150 F4.2 km/s e_K1 rms uncertainty on K1
152-155 F4.2 km/s e_K2 ? rms uncertainty on K2
158-165 F8.6 solMass e_f(m) ? rms uncertainty on f(m)
167-174 F8.5 Gm e_asini rms uncertainty on asini
177-182 F6.4 km/s e_O-C ? rms uncertainty on O-C
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Byte-by-byte Description of file: table11.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Cluster Cluster designation
13- 16 I4 --- WEBDA Star designation (WEBDA)
19- 29 A11 --- OName Alternate designation
31- 32 I2 h RAh Right ascension (J2000)
34- 35 I2 min RAm Right ascension (J2000)
37- 41 F5.2 s RAs Right ascension (J2000)
44 A1 --- DE- Declination sign (J2000)
45- 46 I2 deg DEd Declination (J2000)
48- 49 I2 arcmin DEm Declination (J2000)
51- 54 F4.1 arcsec DEs Declination (J2000)
56- 62 F7.2 km/s RV Mean radial velocity
65- 69 F5.2 km/s e_RV Error on the radial velocity
72- 76 F5.2 km/s sigma RMS on velocity
79- 83 F5.2 --- E/I ? External/Internal error ratio
87- 88 I2 --- N Number of measurements
91- 94 F4.1 km/s Vsini ? Rotational velocity
97-100 F4.1 km/s e_Vsini ? Error on Vsini
103-106 I4 d DeltaT ? Time interval spent by the observations
109-113 F5.3 --- Pchi2 ? Probability of variability P(chi2)
116-123 A8 --- Notes Membership, or duplicity
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Byte-by-byte Description of file: table10.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Cluster Cluster designation
13- 16 I4 --- WEBDA Star designation (WEBDA)
19- 29 F11.3 --- HJD Heliocentric Julian date
32 A1 --- Comp [ABCVS] Component in SB2
35- 41 F7.2 km/s RV Radial velocity
44- 47 F4.2 km/s e_RV Error on the radial velocity
51- 60 A10 "DD/MM/YYYY" Obs.Date Date of observation
63- 66 I4 s Integ ? Integration length
70- 75 I6 ct Counts ? Number of counts
78- 80 A3 --- Obs Observatory
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History:
* 15-May-2009: Original files
* 10-Jun-2010: position of star "Blanco 1 1062" corrected from WEBDA
(original position was identical to "Blanco 1 1058")
* 20-Aug-2015: Some corrections on ONames in table11
* 08-Sep-2015: Some corrections on ONames and positions in table11
Acknowledgements:
Jean-Claude Mermilliod ,
(End) Jean-Claude Mermilliod, Patricia Vannier [CDS] 14-May-2009