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J/AZh/71/468 Spectrophotometric Standards near the Pole (Tereshchenko, 1994)
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Regional Spectrophotometric Standards of Intermediate Brightness: Standards
around the Northern Celestial Pole
Tereshchenko V.M.
<Astron. Zh. 71, 468 (1994)>
=1994AZh....71..468T
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ADC_Keywords: Energy distributions ; Spectrophotometry
Description:
Absolute energy distributions for 13 circumpolar ({delta}>+85deg)
stars forming a spectrophotometric version of the North Polar
Spectrophotometric Sequence (NPSS) are presented. A-type stars of
5-9mag brightness were studied in the range 3100 to 7750A with
resolution of 50A. Observations were made with 0.5-m and 1-m
telescopes using Seya-Namioka spectrometers. The relative rms error of
results in the region 4000-7000A is 2 to 3%, while at the ends of the
studied range it is 3-5%. The primary standard was the circumpolar
star HD 221525 (V=5.58, A7IV), and its spectral energy distribution
had been determined earlier.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3 77 89 Energy distributions in the spectra of NPSS
member starsDefaults
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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- 4 I4 0.1nm Lambda [3125/7525] Spectral line wavelength
7- 9 I3 uW/m2/m HD11696 Energy for HD 11696 (1)
12- 14 I3 uW/m2/m HD17243 Energy for HD 17243 (1)
17- 19 I3 uW/m2/m HD30881 Energy for HD 30881 (1)
22- 25 I4 0.1uW/m2/m HD34109 Energy for HD 34109 (1)
28- 30 I3 uW/m2/m HD56049 Energy for HD 56049 (1)
33- 35 I3 uW/m2/m HD96870 Energy for HD 96870 (1)
38- 40 I3 uW/m2/m HD121952 Energy for HD 121952 (1)
43- 46 I4 uW/m2/m HD166205 Energy for HD 166205 (1)
49- 51 I3 0.1uW/m2/m HD181518 Energy for HD 181518 (1)
54- 56 I3 uW/m2/m HD212710 Energy for HD 212710 (1)
59- 61 I3 uW/m2/m HD221525 Energy for HD 221525 (1)
64- 66 I3 0.1uW/m2/m HD223257 Energy for HD 223257 (1)
69- 71 I3 0.1uW/m2/m HD224202 Energy for HD 224202 (1)
74- 77 I4 0.1uW/m2/m HD224687 Energy for HD 224687 (1)
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Note (1): uW/m2/m = 10-5.erg/cm2/s/cm in original
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Table1: NPSS member stars and their characteristics
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No HD PPM alpha delta m(pg) Sp
(2000)
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1 11696 40136 2 34.5 88 28 8.2 (7.9) A3V
2 17243 50124 3 06.2 85 52 9.0 A0
3 30881 80195 5 24.3 86 17 7.8 (7.96) A0V
4 34109 90147 5 43.8 85 40 6.5 (6.6) A0V
5 56049 120190 7 48.6 86 20 8.9 A0
6 96870 190195 11 21.8 87 38 7.4 (7.51) A0
7 121952 230181 13 35.8 87 18 9.0 A2
8 166205 300167 17 32.2 86 35 4.4 (4.36) A2V
9 181518 320131 18 25.5 87 49 8.6 A2
10 212710 390119 22 13.2 86 06 5.2 (5.27) A0
11 * 221525 410143 23 27.0 87 18 5.8 (5.58) F0III
12 223257 410195 23 43.2 88 21 8.9 A2
13 224202 420136 23 55.1 85 54 8.8 A0
14 224687 420150 23 59.5 86 42 7.1 (6.7) A0V
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Note: * - Primary standard.
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(End) Veta Avedisova [INASAN] 10-Jan-1997