J/AJ/140/293 Spectroscopic study of the Wolf 630 moving group (Bubar+, 2010)
Spectroscopic abundances and membership in the Wolf 630 moving group.
Bubar E.J., King J.R.
<Astron. J., 140, 293-318 (2010)>
=2010AJ....140..293B 2010AJ....140..293B
ADC_Keywords: Associations, stellar ; Stars, late-type ; Abundances
Keywords: stars: abundances - stars: late-type
Abstract:
The concept of kinematic assemblages evolving from dispersed stellar
clusters has remained contentious since Eggen's initial formulation of
moving groups in the 1960s. With high-quality parallaxes from the
Hipparcos space astrometry mission, distance measurements for
thousands of nearby, seemingly isolated stars are currently available.
With these distances, a high-resolution spectroscopic abundance
analysis can be brought to bear on the alleged members of these moving
groups. If a structure is a relic of an open cluster, the members can
be expected to be monolithic in age and abundance in as much as
homogeneity is observed in young open clusters. In this work, we have
examined 34 putative members of the proposed Wolf 630 moving group
using high-resolution stellar spectroscopy.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 85 44 Kinematic information
table2.dat 31 235 Solar equivalent widths
table3.dat 46 1061 All equivalent widths (no data for HIP 103983)
table4.dat 47 34 Basic physical parameters
table5.dat 126 34 Abundances
table7.dat 30 34 Membership status
table9.dat 19 19 Lithium abundance
table10.dat 101 30 Oxygen abundances
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See also:
I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HIP HIP number
8- 12 F5.2 mas plx Parallax
14- 17 F4.2 mas e_plx rms uncertainty on plx
19- 25 F7.2 mas/yr pmRA Proper motion along RA
27- 31 F5.2 mas/yr e_pmRA rms uncertainty on pmRA
33- 39 F7.2 mas/yr pmDE Proper motion along DE
41- 44 F4.2 mas/yr e_pmDE rms uncertainty on pmDE
46- 50 F5.1 km/s RV Radial velocity
52- 54 F3.1 km/s e_RV rms uncertainty on RV
56- 59 F4.1 km/s Uvel U velocity in galactic frame
61- 63 F3.1 km/s e_Uvel rms uncertainty on Uvel
65- 69 F5.1 km/s Vvel V velocity in galactic frame
71- 74 F4.1 km/s e_Vvel rms uncertainty on Vvel
76- 80 F5.1 km/s Wvel W velocity in galactic frame
82- 85 F4.1 km/s e_Wvel rms uncertainty on Wvel
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 8 F8.3 0.1nm lambda Wavelength
10- 14 A5 --- Ion Ion
16- 19 F4.2 eV EP Excitation potential
21- 25 F5.2 [-] log(gf) Oscillator strength
27- 31 F5.1 01.pm EW Solar equivalent width
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HIP HIP number
8- 15 F8.3 0.1nm lambda Wavelength (Å)
17- 20 A4 --- Ion Ion identification
22- 25 F4.2 eV ExPot Excitation potential
27- 31 F5.2 [-] log(gf) Log of the oscillator strength
33- 39 F7.2 10-13m EW ? Equivalent width in milli-Angstroms
41- 46 F6.2 [-] logN ? Log number abundance, derived from EW.
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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- 6 I6 --- HIP HIP number
7 A1 --- n_HIP [ab] Note about Tsp or Vt (1)
9- 12 I4 K Tsp Spectroscopic effective temperature
14- 16 I3 K e_Tsp rms uncertainty on Tsp
18- 21 F4.2 [cm/s2] logg Surface gravity
23- 26 F4.2 [cm/s2] e_logg rms uncertainty on logg
28- 31 F4.2 km/s Vt Microturbulence velocity ξ
33- 36 F4.2 km/s e_Vt rms uncertainty on Vt
38- 42 F5.2 [-] [Fe/H] Metallicity
44- 47 F4.2 [-] e_[Fe/H] rms uncertainty on [Fe/H]
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Note (1): Notes as follows:
a = Surface gravities for these stars are physical, calculated as
discussed in the text.
b = Surface gravity for this star is physical, calculated as
discussed in the text. The microturbulence was set to 0
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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- 6 I6 --- HIP HIP number
8- 12 F5.2 [-] [Mg/H] ? Mg abundance
14- 17 F4.2 [-] e_[Mg/H] ? rms uncertainty on [Mg/H]
19- 23 F5.2 [-] [Si/H] ? Si abundance
25- 28 F4.2 [-] e_[Si/H] ? rms uncertainty on [Si/H]
30- 33 F4.2 [-] [Ca/H] ? Ca abundance
35- 38 F4.2 [-] e_[Ca/H] ? rms uncertainty on [Ca/H]
40- 44 F5.2 [-] [Ti/H] ? Ti abundance
46- 49 F4.2 [-] e_[Ti/H] ? rms uncertainty on [Ti/H]
51- 55 F5.2 [-] [Ti2/H] ? Ti2 abundance
57- 60 F4.2 [-] e_[Ti2/H] ? rms uncertainty on Ti2/H]
62- 66 F5.2 [-] [Cr/H] ? Cr abundance
68- 71 F4.2 [-] e_[Cr/H] ? rms uncertainty on [Cr/H]
73- 77 F5.2 [-] [Mn/H] ? Mn abundance
79- 82 F4.2 [-] e_[Mn/H] ? rms uncertainty on [Mn/H]
84- 88 F5.2 [-] [Ni/H] ? Ni abundance
90- 93 F4.2 [-] e_[Ni/H] ? rms uncertainty on [Ni/H]
95- 99 F5.2 [-] [Na/H] ? Na abundance
101-104 F4.2 [-] e_[Na/H] ? rms uncertainty on [Na/H]
106-110 F5.2 [-] [Al/H] ? Al abundance
112-115 F4.2 [-] e_[Al/H] ? rms uncertainty on [Al/H]
117-121 F5.2 [-] [Ba/H] ? Ba abundance
123-126 F4.2 [-] e_[Ba/H] ? rms uncertainty on [Ba/H]
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Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- St [U Po Pr] Membership status:
Unlikely, Possible, Probable
4- 9 I6 --- HIP HIP number
10 A1 --- n_HIP [*+] Unexplained note on HIP
12- 15 I4 K Tsp Spectrosocpic effective temperature
17- 19 I3 K e_Tsp rms uncertainty on Tsp
21- 25 F5.2 [Sun] [Fe/H] Metallicity
27- 30 F4.2 [Sun] e_[Fe/H] rms uncertainty on [Fe/H]
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Byte-by-byte Description of file: table9.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HIP HIP number
8- 9 A2 --- l_logN(Li) [≤ ] Limit flag on logN(Li)
10- 14 F5.2 [-] logN(Li) Li abundance
16- 19 F4.2 [-] e_logN(Li) ? rms uncertainty on logN(Li)
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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- 6 I6 --- HIP HIP number
8- 12 F5.1 0.1nm EW7771 ?=- 7771Å line equivalent width
14- 18 F5.1 0.1nm EW7774 ?=- 7774Å line equivalent width
20- 24 F5.1 0.1nm EW7775 ?=- 7775Å line equivalent width
26- 30 F5.2 [Sun] LTE.7771 ?=- 7771Å line LTE oxygen abundance
32- 35 F4.2 [Sun] e_LTE.7771 ?=- rms uncertainty on LTE[O/H]7771
37- 41 F5.2 [Sun] LTE.7774 ?=- 7774Å line LTE oxygen abundance
43- 46 F4.2 [Sun] e_LTE.7774 ?=- rms uncertainty on LTE[O/H]7774
48- 52 F5.2 [Sun] LTE.7775 ?=- 7775Å line LTE oxygen abundance
54- 57 F4.2 [Sun] e_LTE.7775 ?=- rms uncertainty on LTE[O/H]7775
59- 63 F5.2 [Sun] f6300 ?=- Forbidden line 6300Å oxygen abundance
65- 68 F4.2 [Sun] e_f6300 ?=- rms uncertainty on [O/H]6300
70- 74 F5.2 [Sun] NLTE.7771 ?=- 7771Å line NLTE oxygen abundance
76- 79 F4.2 [Sun] e_NLTE.7771 ?=- rms uncertainty on NLTE[O/H]7771
81- 85 F5.2 [Sun] NLTE.7774 ?=- 7774Å line NLTE oxygen abundance
87- 90 F4.2 [Sun] e_NLTE.7774 ?=- rms uncertainty on NLTE[O/H]7774
92- 96 F5.2 [Sun] NLTE.7775 ?=- 7775Å line NLTE oxygen abundance
98-101 F4.2 [Sun] e_NLTE.7775 ?=- rms uncertainty on NLTE[O/H]7775
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 11-Jun-2012