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Detailed Description of J/AJ/109/1379
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Individual files can be fetched (via http) from
here
or via ftp from: ftp://cdsarc.u-strasbg.fr/pub/cats/J/AJ/109/1379
The catalogue can be queried from: http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=J/AJ/109/1379
This standardized document follows the rules of the Standard Description for Astronomical Catalogues. For those having to work on this catalogue using FORTRAN programs, this ReadMe file can be transformed into a f77-compliant program which reads the files making up this catalogue, in two versions: either a f77 program loading whole files into arrays, or a f77-program reading each data file line by line.
J/AJ/109/1379 Praesepe & M 67 spectral standards (Allen+ 1995)
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Moderate-resolution spectral standards from 560 to 900 nm
Allen L.E., Strom K.M.
<Astron. J. 109, 1379 (1995)>
=1995AJ....109.1379A (SIMBAD/NED BibCode)
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ADC_Keywords: Clusters, open ; MK spectral classification ; Photometry
Description:
We present a grid of stellar classification spectra of moderate
resolution (R~1500) in the range lambda lambda 5600-9000A, compiled
from high signal-to-noise spectra of 275 stars, most in the open
clusters Praesepe and M 67. The grid covers dwarfs from types B8
through M5, giants from G8 through M7, and subgiants from F5 through
K0. We catalog atomic and molecular absorption features useful for
stellar classification, and demonstrate the use of
luminosity-sensitive features to distinguish between late-type dwarf
and giant stars.
Objects:
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RA (2000) DE Designation(s)
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08 50.4 +11 49 M 67 = NGC 2682
08 40.4 +19 40 M 44 = Praesepe = NGC 2632
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File Summary:
FileName Lrecl Records Explanations
× ReadMe 80 . This file
× table1 90 106 Spectral standards in Praesepe
× table2 90 147 Spectral standards in M 67
× table3 40 16 Additional giants
× table4 118 25 Spectral features
Byte-by-byte Description of file: table1 table2
Bytes Format Units Label Explanations
1- 4 I4 --- ID Identification number (1)
5 A1 --- n_ID [*] * when spectrum plotted (2)
7 I1 h RAh Right ascension (1950)
9- 10 I2 min RAm Right ascension (1950)
12- 15 F4.1 s RAs Right ascension (1950)
17- 18 I2 deg DEd Declination (1950)
20- 21 I2 arcmin DEm Declination (1950)
23- 24 I2 arcsec DEs Declination (1950)
26- 31 A6 --- Sp Adopted spectral type
33- 38 F6.3 mag Vmag V magnitude
40- 45 F6.3 mag B-V ? B-V color index
47- 51 F5.3 mag V-I ? V-I color index
53- 54 I2 % Prob Probability of membership (3)
56 I1 --- r_Vmag [0/2] BVI photometry reference (4)
58- 90 A33 --- Notes Notes (5)
Note (1): In table1, ID from Jones and Stauffer (1991AJ....102.1080J)
In table2, ID from Sanders (1977A&AS...27...89S)
Note (2): *: spectrum plotted in Figure 3 for table1, in Figure 5 for table2.
Note (3): In table1, Prob from Jones and Stauffer (1991AJ....102.1080J)
In table2, Prob from Girard et al. (1989AJ.....98..227G)
Note (4): 0: BVI photometry from Jones and Stauffer (1991AJ....102.1080J)
1: BV photometry from Girard et al. (1989AJ.....98..227G)
2: BVI photometry from Montgomery et al. (1993) J/AJ/106/181
Note (5): In table1:
Ab = Abt (1986PASP...98..307A)
Ba = Barbier (1963POHP....6...36B)
BB = Boesgaard and Budge (1988ApJ...332..410B)
Bi = Bidelman (1956PASP...68..318B)
Bo = Bolte (1991ApJ...376..514B)
CB = Crawford and Barnes (1969AJ.....74..818C)
CGal = Corbally and Garrison (1986AJ.....92...90C)
CGb = Corbally and Garrison (1983JRASC..77...28C)
Jo = Johnson (1952ApJ...116..640J)
Po = Popper (1948ApJ...108..490P)
Re = Rebeirot (1966POHP....8...24R)
RS = Randich and Schmitt (1994) Cat. J/A+A/298/115
SS = Soderblom and Stauffer (1984AJ.....89.1543S)
St = Stauffer (1982PASP...94..678S)
Up = Upgren et al. (1979AJ.....84.1586U)
Wi = Wilson (1963ApJ...138..832W)
In table2:
Identification cross references:
F: Fagerholm ID (1906ArMAF...2s...1F)
RGO: Royal Greenwich Observatory ID
S: Sandage ID
Previously published spectral types from:
BB: Burbidge and Burbidge (1959ApJ...129..513B)
Pe: Pesch (1967ApJ...148..781P)
Po: Popper (1954AJ.....59..445P)
Byte-by-byte Description of file: table3
Bytes Format Units Label Explanations
1- 9 A9 --- Name Star name
10 A1 --- n_Name [*] * when spectrum plotted in Figure 3
12- 13 I2 h RAh Right ascension (1950)
15- 16 I2 min RAm Right ascension (1950)
18- 21 F4.1 s RAs Right ascension (1950)
23 A1 --- DE- Declination sign
24- 25 I2 deg DEd Declination (1950)
27- 28 I2 arcmin DEm Declination (1950)
30- 31 I2 arcsec DEs Declination (1950)
33- 40 A8 --- Sp Spectral type
Byte-by-byte Description of file: table4
Bytes Format Units Label Explanations
1- 4 I4 0.1nm Lambda Wavelength
5 A1 --- n_Lambda [-,] Separator, '-' for interval
6- 9 I4 0.1nm Lambda2 ? Second wavelength
10 A1 --- n_Lambda2 [,] Separator
11- 14 I4 0.1nm Lambda3 ? Third wavelength
16- 30 A15 --- Ident Identification
32-114 A83 --- Notes Notes
116-118 A3 --- Ref References (1)
Note (1): 1: Torre-Dodgen & Weaver (1993) III/181
2: Kirkpatrick et al. (1991ApJS...77..417K)
History: Prepared via OCR at CDS.
References:
Torre-Dodgen & Weaver, Cat. III/181 =1993PASP..105..693T
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(End) James Marcout, Patricia Bauer [CDS] 01-Oct-1996
