J/AJ/126/2048 NStars project: the Northern Sample. I. (Gray+, 2003)
Contributions to the nearby stars (NStars) project: spectroscopy of stars
earlier than M0 within 40 parsecs: the Northern Sample. I.
Gray R.O., Corbally C.J., Garrison R.F., Mcfadden M.T., Robinson P.E.
<Astron. J., 126, 2048-2059 (2003)>
=2003AJ....126.2048G 2003AJ....126.2048G
ADC_Keywords: Stars, nearby ; Abundances ; Parallaxes, trigonometric ;
Effective temperatures
Keywords: stars: abundances - stars: activity - stars: fundamental parameters -
stars: statistics - surveys
Abstract:
We have embarked on a project, under the aegis of the Nearby Stars
(NStars)/Space Interferometry Mission Preparatory Science Program, to
obtain spectra, spectral types, and, where feasible, basic physical
parameters for the 3600 dwarf and giant stars earlier than M0 within
40pc of the Sun. In this paper, we report on the results of this
project for the first 664 stars in the northern hemisphere. These
results include precise, homogeneous spectral types, basic physical
parameters (including the effective temperature, surface gravity, and
overall metallicity [M/H]), and measures of the chromospheric activity
of our program stars.
Description:
The observations reported in this paper were all made on the 0.8m
telescope of the Dark Sky Observatory (Appalachian State University),
situated on the escarpment of the Blue Ridge Mountains in northwestern
North Carolina.
All of the spectra obtained for this project are available on the
project's Web site, http://stellar.phys.appstate.edu
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 100 664 Spectral types, basic physical parameters, and
chromospheric indices
notes.dat 80 204 Individual notes
table2.dat 52 11 Stars beyond 40 parsecs identified by MK
classification
table5.dat 13 43 Chromospheric activity calibration stars
table7.dat 27 28 Candidate stars for terrestrial planet surveys
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See also:
II/74 : Photometric Data for the Nearby Stars (Hauck+ 1981)
III/191 : Radial Velocities of Nearby Stars (Tokovinin, 1992)
III/198 : Palomar/MSU nearby star spectroscopic survey (Hawley+ 1997)
V/32 : Stars within 25 pc of the Sun (Woolley+ 1970)
V/70 : Nearby Stars, Preliminary 3rd Version (Gliese+ 1991)
V/101 : Nearest stars until 10pc (Zakhozhaj, 1979-1996)
J/A+A/352/555 : Fundamental parameters of nearby stars (Allende Prieto+, 1999)
J/A+A/390/491 : DENIS new nearby stars (Reyle+, 2002)
J/A+A/421/643 : New nearby stars in the LEHPMS (Reyle+, 2004)
J/A+AS/135/319 : ROSAT data of Nearby Stars (Huensch+ 1999)
J/AJ/123/3356 : Palomar/MSU nearby star spectros. survey. III. (Gizis+, 2002)
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 ? Hipparcos catalog (Cat. I/239) name
8- 19 A12 --- BD/HD BD or HD name
21- 43 A23 --- SpType MK spectral type
45 A1 --- n_SpType [*] Note on the spectral type (1)
47- 51 I5 K Teff ? Effective temperature
53- 56 F4.2 [cm/s2] log(g) ? Logarithm of the surface gravity
58 A1 --- f_log(g) [f] Flag on log(g) (2)
60- 62 F3.1 km/s xi ? Microturbulent velocity
64 A1 --- f_xi [f] Flag on xi (2)
66- 70 F5.2 [Sun] [M/H] ? Log of the overall metal abundance (3)
72 A1 --- f_[M/H] [f] Flag on [M/H] (2)
74 A1 --- n_[M/H] [K*] Note on the simplex solution to the
previous four physical parameters (1)
76- 80 F5.3 --- SMW ? Mt. Wilson chromospheric activity index
82- 87 F6.3 [-] logR'HK ? Measure of the chromospheric flux in
the Ca II K and H lines
89- 90 A2 --- AC Chromospheric activity class (4)
92- 94 F3.1 0.1nm Res ? Resolution of the spectrum in angstroms (5)
96 A1 --- n_AC [*] Note on chromospheric activity (1)
98-100 I3 --- n_HIP ? Note number in notes.dat file
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Note (1): In some of these comments, the rotational broadening (vsini)
of the star is noted; these are visual estimates used in the simplex
solutions and should not be taken as actual measurements of the vsini
K = method used to determine the basic physical parameters was that
adopted for the G and K giants.
Note (2): 'f' means that the physical parameter was held fixed
in the simplex solution.
Note (3): Where [M/H]=0.00 refers to solar metallicity.
Note (4): Chromospheric activity class is indicated as follows:
VI = Very inactive
I = Inactive
A = Active
VA = Very active
Note (5): Used for the measurement of S-MW and logR.
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Byte-by-byte Description of file: notes.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Note Note number
5- 80 A76 --- Text Text of the note
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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- 6 I6 --- HIP HIP number
9- 19 A11 --- BD/HD BD or HD name
22- 33 A12 --- SpType MK spectral type
36- 41 F6.2 mas plx Hipparcos parallax
43- 47 F5.2 mas e_plx rms uncertainty on plx
49- 52 I4 pc Dist Approximate distance based on the MK type
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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 --- HD HD number
7 A1 --- m_HD Multiplicity index on HD
9- 13 F5.3 --- Mount Wilson chromospheric activity index
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Table 6: Possible solar-metallicity Maunder minimum dwarfs
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HIP HD SpType [M/H] logR'HK
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9269 12051 G9 V 0.00 -5.134
35872 57901 K3- V 0.00 -5.135
39064 65430 K0 V -0.20 -5.110
42499 73667 K2 V -0.15 -5.127
67246 120066 G0 V 0.14 -5.193
70873 127334 G5 V CH+0.3 -0.03 -5.118
88348 164922 G9 V 0.00 -5.141
101345 195564 G2 V -0.09 -5.196
116085 221354 K0 V 0.00 -5.149
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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- 6 I6 --- HIP HIP number
9- 14 I6 --- HD HD number
17- 27 A11 --- SpType MK spectral type
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Bauer [CDS] 02-Dec-2003