J/AJ/109/1379 Praesepe & M 67 spectral standards (Allen+ 1995)
Moderate-resolution spectral standards from 560 to 900 nm
Allen L.E., Strom K.M.
<Astron. J. 109, 1379 (1995)>
=1995AJ....109.1379A 1995AJ....109.1379A (SIMBAD/NED BibCode)
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:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1 89 106 Spectral standards in Praesepe
table2 88 147 Spectral standards in M 67
table3 40 16 Additional giants
table4 118 25 Spectral features
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Byte-by-byte Description of file: table1 table2
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Bytes Format Units Label Explanations
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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- 89 A32 --- Notes Notes (5)
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Note (1): In table1, ID from Jones and Stauffer (1991AJ....102.1080J 1991AJ....102.1080J)
In table2, ID from Sanders (1977A&AS...27...89S 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 1991AJ....102.1080J)
In table2, Prob from Girard et al. (1989AJ.....98..227G 1989AJ.....98..227G)
Note (4): 0: BVI photometry from Jones and Stauffer (1991AJ....102.1080J 1991AJ....102.1080J)
1: BV photometry from Girard et al. (1989AJ.....98..227G 1989AJ.....98..227G)
2: BVI photometry from Montgomery et al. (1993) J/AJ/106/181
Note (5): In table1:
Ab = Abt (1986PASP...98..307A 1986PASP...98..307A)
Ba = Barbier (1963POHP....6...36B 1963POHP....6...36B)
BB = Boesgaard and Budge (1988ApJ...332..410B 1988ApJ...332..410B)
Bi = Bidelman (1956PASP...68..318B 1956PASP...68..318B)
Bo = Bolte (1991ApJ...376..514B 1991ApJ...376..514B)
CB = Crawford and Barnes (1969AJ.....74..818C 1969AJ.....74..818C)
CGal = Corbally and Garrison (1986AJ.....92...90C 1986AJ.....92...90C)
CGb = Corbally and Garrison (1983JRASC..77...28C 1983JRASC..77...28C)
Jo = Johnson (1952ApJ...116..640J 1952ApJ...116..640J)
Po = Popper (1948ApJ...108..490P 1948ApJ...108..490P)
Re = Rebeirot (1966POHP....8...24R 1966POHP....8...24R)
RS = Randich and Schmitt (1994) Cat. J/A+A/298/115
SS = Soderblom and Stauffer (1984AJ.....89.1543S 1984AJ.....89.1543S)
St = Stauffer (1982PASP...94..678S 1982PASP...94..678S)
Up = Upgren et al. (1979AJ.....84.1586U 1979AJ.....84.1586U)
Wi = Wilson (1963ApJ...138..832W 1963ApJ...138..832W)
In table2:
Identification cross references:
F: Fagerholm ID (1906ArMAF...2s...1F 1906ArMAF...2s...1F)
RGO: Royal Greenwich Observatory ID
S: Sandage ID
Previously published spectral types from:
BB: Burbidge and Burbidge (1959ApJ...129..513B 1959ApJ...129..513B)
Pe: Pesch (1967ApJ...148..781P 1967ApJ...148..781P)
Po: Popper (1954AJ.....59..445P 1954AJ.....59..445P)
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Byte-by-byte Description of file: table3
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Bytes Format Units Label Explanations
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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
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Byte-by-byte Description of file: table4
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Bytes Format Units Label Explanations
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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)
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Note (1): 1: Torre-Dodgen & Weaver (1993) III/181
2: Kirkpatrick et al. (1991ApJS...77..417K 1991ApJS...77..417K)
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History: Prepared via OCR at CDS.
References:
Torre-Dodgen & Weaver, Cat. III/181 =1993PASP..105..693T 1993PASP..105..693T
(End) James Marcout, Patricia Bauer [CDS] 01-Oct-1996