J/AZh/78/1135 Spectrophotometric standards near DE=+40° (Tereshchenko, 2001)
Intermediate-brightness spectrophotometric standards.
Standards near +40° declination.
Tereshchenko V.M.
<Astron. Zh. 78, 1135 (2001)>
=2001AZh....78.1135T 2001AZh....78.1135T
=2001ARep...45.1002T 2001ARep...45.1002T
ADC_Keywords: Stars, normal; Spectrophotometry ; Energy distributions ;
Photometry, UBV ; Photometry, Vilnius
Abstract:
The second stage to compile a list of regional intermediate-brightness
spectrophotometric standards has been completed. It includes the
spectral energy distribution for 24 stars with magnitudes 7.0-8.5 near
+40° declination. The range 3100-7600Å was studied with a
spectral resolution of 50Å. All the stars are referenced to a
single standard the circumpolar star HD 221525. The energy
distributions were used to compute color indices in the UBV, WBVR, and
UPXYZVS systems,as well as in the system (BT,VT) of the TYCHO catalog.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 50 24 Program stars and their principal characteristics
table2.dat 150 90 Spectral energy distributions of 24 stars
table3.dat 65 24 UBV, WBVR and UPXYZVS color indices computed
from the spectral energy distributions
table4.dat 50 24 Observed and calculated values of VT and BT-VT
and their residuals
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See also:
I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)
III/202 : Spectrophotometric Catalogue of Stars (Kharitonov+, 1988)
J/AZh/71/468 : Spectrophotometric Standards near the Pole (Tereshchenko, 1994)
J/AZh/73/762 : Giants and supergiants energy distributions (Tereshchenko, 1996)
J/AZh/76/604 : Spectrophotometry of S and carbon stars (Tereshchenko, 1999)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Seq Sequential number
4- 9 I6 --- HD HD (Cat. III/135) number
12- 13 I2 h RAh Right ascension (J2000)
15- 16 I2 min RAm Right ascension (J2000)
18- 19 I2 s RAs Right ascension (J2000)
21 A1 --- DE- Declination sign (J2000)
22- 23 I2 deg DEd Declination (J2000)
25- 28 F4.1 arcmin DEm Declination (J2000)
31- 34 F4.2 mag Vmag V magnitude
35 A1 --- n_Vmag [*] *: photographic magnitude from
PPM Cat. I/146
38- 42 F5.2 mag B-V ? B-V colour index
44- 48 A5 --- SpType MK Spectral type
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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- 4 I4 0.1nm lambda Spectral line wavelength
8- 10 I3 nW/m2/cm ED1 Energy (10-6erg/cm2/s/cm) for star N1
14- 16 I3 nW/m2/cm ED2 Energy (10-6erg/cm2/s/cm) for star N2
20- 22 I3 nW/m2/cm ED3 Energy (10-6erg/cm2/s/cm) for star N3
26- 28 I3 nW/m2/cm ED4 Energy (10-6erg/cm2/s/cm) for star N4
32- 34 I3 nW/m2/cm ED5 Energy (10-6erg/cm2/s/cm) for star N5
38- 40 I3 nW/m2/cm ED6 Energy (10-6erg/cm2/s/cm) for star N6
44- 46 I3 nW/m2/cm ED7 Energy (10-6erg/cm2/s/cm) for star N7
50- 52 I3 nW/m2/cm ED8 Energy (10-6erg/cm2/s/cm) for star N8
56- 58 I3 nW/m2/cm ED9 Energy (10-6erg/cm2/s/cm) for star N9
62- 64 I3 nW/m2/cm ED10 Energy (10-6erg/cm2/s/cm) for star N10
68- 70 I3 nW/m2/cm ED11 Energy (10-6erg/cm2/s/cm) for star N11
74- 76 I3 nW/m2/cm ED12 Energy (10-6erg/cm2/s/cm) for star N12
81- 83 I3 nW/m2/cm ED13 Energy (10-6erg/cm2/s/cm) for star N13
86- 88 I3 nW/m2/cm ED14 Energy (10-6erg/cm2/s/cm) for star N14
92- 94 I3 nW/m2/cm ED15 Energy (10-6erg/cm2/s/cm) for star N15
98-100 I3 nW/m2/cm ED16 Energy (10-6erg/cm2/s/cm) for star N16
104-106 I3 nW/m2/cm ED17 Energy (10-6erg/cm2/s/cm) for star N17
110-112 I3 nW/m2/cm ED18 Energy (10-6erg/cm2/s/cm) for star N18
116-118 I3 nW/m2/cm ED19 Energy (10-6erg/cm2/s/cm) for star N19
122-124 I3 nW/m2/cm ED20 Energy (10-6erg/cm2/s/cm) for star N20
128-130 I3 nW/m2/cm ED21 Energy (10-6erg/cm2/s/cm) for star N21
134-136 I3 nW/m2/cm ED22 Energy (10-6erg/cm2/s/cm) for star N22
140-142 I3 nW/m2/cm ED23 Energy (10-6erg/cm2/s/cm) for star N23
146-148 I3 nW/m2/cm ED24 Energy (10-6erg/cm2/s/cm) for star N24
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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- 2 I2 --- Seq Sequential number
4- 8 F5.2 mag U-B Johnson U-B colour index
10- 14 F5.2 mag B-V Johnson B-V colour index
16- 20 F5.3 mag Vwmag WBVR (Kornilov et al., 1991TrSht..63....4K 1991TrSht..63....4K)
V magnitude
22- 27 F6.3 mag W-Bw WBVR W-B colour index
29- 34 F6.3 mag B-Vw WBVR B-V colour index
36- 39 F4.2 mag U-P Vilnius U-P colour index
41- 44 F4.2 mag P-X Vilnius P-X colour index
46- 49 F4.2 mag X-Y Vilnius X-Y colour index
51- 54 F4.2 mag Y-Z Vilnius Y-Z colour index
56- 59 F4.2 mag Z-V Vilnius Z-V colour index
61- 64 F4.2 mag V-S Vilnius V-S colour index
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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- 2 I2 --- Seq Sequential number
5- 10 I6 --- HD HD (Cat. III/135) number
12- 16 F5.3 mag VTo ? Tycho (Cat. I/239) total V magnitude
18- 22 F5.3 mag VTc Total V magnitude computed from
spectrophotometric data
24- 29 F6.3 mag d(VT) ? Total V magnitude difference (1)
31- 36 F6.3 mag (BT-VT)o ? Tycho (Cat. I/239) BT-VT colour index
38- 43 F6.3 mag (BT-VT)c BT-VT colour index computed from
spectrophotometric data
45- 50 F6.3 mag d(BT-VT) ? (BT-VT) difference (1)
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Note (1): Mean values:
Mean d(VT)=-0.007, Mean d(BT-VT)=+0.004
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(End) Veta Avedisova (INASAN) 02-Apr-2002