III/280 Astron low resolution UV spectra (Boyarchuk+, 1994)
Astrophysical studies with the Astron space station.
Boyarchuk A.A.
<Moscow, Fizmatlit, 416 pp, ISBN 5-02-014515-7 (1994)>
=2017yCat.3280....0B 2017yCat.3280....0B
ADC_Keywords: Atlases ; Spectroscopy ; Ultraviolet
Keywords: atlases - stars: uv spectroscopy
Description:
Astron was a Soviet spacecraft launched on 23 March 1983, and it was
operational for eight years as the largest ultraviolet space telescope
during its lifetime. Astron's payload consisted of an 80 cm
ultraviolet telescope Spica and an X-ray spectroscope. We present 159
low resolution spectra of stars obtained during the Astron space
mission (Tables 4, 5; hereafter table numbers in Boyarchuk et al. 1994
are given).
Table 4 (observational log, logs.dat) contains data on 142 sessions
for 90 stars (sorted in ascending order of RA), where SED was obtained
by scanning method, and then data on 17 sessions for 15 stars (also
sorted in ascending order of RA), where multicolor photometry was
done. Kilpio et al. (2016, Baltic Astronomy 25, 23) presented results
of the comparison of Astron data to the modern UV stellar data,
discussed Astron precision and accuracy, and made some conclusions on
potential application areas of these data.
Also 34 sessions of observations of 27 stellar systems (galaxies and
globular clusters) are presented. Observational log was published in
Table 10 and data were published in Table 11, respectively. Also 16
sessions of observations of 12 nebulae (Table 12 for observational log
and Table 13 for data themselves) are presented. Background radiation
intensity data (Table 14) are presented in Table 15. At last, data on
comets are presented in different forms. We draw your attention that
observational data for stars, stellar systems, nebulae and comets are
expressed in log [erg/s/cm^2/A], while for comets data 10E-13
erg/s/cm^2/A units are used, hydroxyl band photometric data for
comets are expressed in log [erg/s/cm^2], and for the background data
it is radiation intensity expressed in log [erg/s/cm^2/A/sr].
Scanned (PDF version of) Boyarchuk et al. (1994) book is available at
http://www.inasan.ru/~astron/astron.pdf
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
logs.dat 84 159 Observational log: stars
logg.dat 68 34 Observational log: stellar systems
logn.dat 85 16 Observational log: nebulae
logb.dat 36 64 Observational log: background
logc.dat 68 10 Observational log: comets
logh.dat 61 11 Observational log: comets in hydroxyl
sps/* . 159 Stars: individual SED (listed in logs.dat)
spg/* . 34 Stellar systems: individual SED
(listed in logg.dat)
spn/* . 16 Nebulae: individual SED (listed in logn.dat)
spb/* . 64 Background: individual radiation intensity
(listed in logb.dat)
spc/* . 1 Comets: SED
sph/* . 1 Comets: hydroxyl band photometric data
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See also:
Byte-by-byte Description of file: logs.dat
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Bytes Format Units Label Explanations
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1- 14 A14 --- Name Name (GCVS for most of the stars) (1)
16- 21 I6 --- HD ?=0 Henry Draper Catalog Number
23- 24 I2 h RAh Right ascension (B1950, epoch 1975.0)
26- 29 F4.1 min RAm Right ascension (B1950, epoch 1975.0)
31 A1 --- DE- Declination sign (B1950, epoch 1975.0)
32- 33 I2 deg DEd Declination (B1950, epoch 1975.0)
35- 36 I2 arcmin DEm Declination (B1950, epoch 1975.0)
38- 42 F5.2 mag Vmag Visual magnitude
44- 48 F5.2 mag B-V ?=-9.99 B-V color in the UBV system
50- 54 F5.2 mag U-B ?=-9.99 U-B color in the UBV system
56- 65 A10 --- SpType ?=unknown Spectral type
67- 74 A8 --- Date Observation date (yy.mm.dd)
76 A1 --- Diaphr [CBO] Diaphragm flag (G1)
78- 84 A7 --- FileName Name of Observational data file
in subdirectory sps
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Note (1): One star is designated as ANON (anonymous). According to Simbad, the
nearest (40 arcsec distance) relatively bright (V=11.77) star to ANON
is TYC 6945-255-1
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Byte-by-byte Description of file: logg.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- Name Name
14- 34 A21 --- Type Type
36- 37 I2 h RAh Right ascension (B1950, epoch 1975.0)
39- 42 F4.1 min RAm Right ascension (B1950, epoch 1975.0)
44 A1 --- DE- Declination sign (B1950, epoch 1975.0)
45- 46 I2 deg DEd Declination (B1950, epoch 1975.0)
48- 49 I2 arcmin DEm Declination (B1950, epoch 1975.0)
51- 58 A8 "date" Date Observation date (dd/mm/yy)
60 A1 --- Diaphr [CBO] Diaphragm flag (G1)
62- 68 A7 --- FileName Name of Observational data file
in subdirectory spg
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Byte-by-byte Description of file: logn.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- ID NGC/IC/M identifier
14- 33 A20 --- Name Name
35- 51 A17 --- Type Type
53- 54 I2 h RAh Right ascension (B1950, epoch 1975.0)
56- 59 F4.1 min RAm Right ascension (B1950, epoch 1975.0)
61 A1 --- DE- Declination sign (B1950, epoch 1975.0)
62- 63 I2 deg DEd Declination (B1950, epoch 1975.0)
65- 66 I2 arcmin DEm Declination (B1950, epoch 1975.0)
68- 75 A8 "DD.MM.YY" Date Observation date (dd.mm.yy)
77 A1 --- Diaphr [CBO] Diaphragm flag (G1)
79- 85 A7 --- FileName Name of Observational data file
in subdirectory spn
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Byte-by-byte Description of file: logb.dat
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Bytes Format Units Label Explanations
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1- 8 A8 "date" Date Observation date (yy/mm/dd)
10 A1 --- ZodLigh [z] Indication for zodiacal light observation
12- 15 F4.1 h Time Observation time, UT (hh.h)
17- 18 I2 h RAh Right ascension (B1950, epoch 1975.0)
20- 21 I2 min RAm Right ascension (B1950, epoch 1975.0)
23 A1 --- DE- Declination sign (B1950, epoch 1975.0)
24- 25 I2 deg DEd Declination (B1950, epoch 1975.0)
27- 28 I2 arcmin DEm Declination (B1950, epoch 1975.0)
30- 36 A7 --- FileName Name of Observational data file
in subdirectory spb
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Byte-by-byte Description of file: logc.dat
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Bytes Format Units Label Explanations
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1- 22 A22 --- Name Name
24- 33 A10 "date" Date Observation date (YYYY/MM/DD)
35 A1 --- Diaphr [CBO] Diaphragm flag (G1)
37- 38 I2 h RAh Rigth ascension (B1950, epoch 1975.0)
39- 40 I2 min RAm Rigth ascension (B1950, epoch 1975.0)
41- 42 I2 sec RAs Rigth ascension (B1950, epoch 1975.0)
44 A1 --- DE- Delcination sign (B1950, epoch 1975.0)
45- 46 I2 deg DEd Declination (B1950, epoch 1975.0)
47- 48 I2 arcmin DEm Declination (B1950, epoch 1975.0)
49- 50 I2 arcsec DEs Declination (B1950, epoch 1975.0)
52- 59 A8 "h:m:s" TimeSt Start of the exposure, UT (hh:mm:ss)
61- 68 A8 "h:m:s" TimeEnd End of the exposure, UT (hh:mm:ss)
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Byte-by-byte Description of file: logh.dat
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Bytes Format Units Label Explanations
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1- 21 A21 --- Name Name
23- 32 A10 "date" Date Observation date (YYYY/MM/DD)
34 A1 --- Diaphr [CBO] Diaphragm flag (G1)
36- 37 I2 h RAh Rigth ascension (B1950, epoch 1975.0)
38- 39 I2 min RAm Rigth ascension (B1950, epoch 1975.0)
40- 41 I2 sec RAs Rigth ascension (B1950, epoch 1975.0)
43 A1 --- DE- Declination sign (B1950, epoch 1975.0)
44- 45 I2 deg DEd Declination (B1950, epoch 1975.0)
46- 47 I2 arcmin DEm Declination (B1950, epoch 1975.0)
48- 49 I2 arcsec DEs Declination (B1950, epoch 1975.0)
51- 55 A5 "h:m" TimeSt Start of the exposure, UT (hh:mm)
57- 61 A5 "h:m" TimeEnd End of the exposure, UT (hh:mm)
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Byte-by-byte Description of file: sps/*
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Bytes Format Units Label Explanations
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1- 4 I4 0.1nm lambda Wavelength
6- 11 F6.2 [10mW/m2/nm] logFlux ?=-99.99 Logarithm of the flux
13- 16 F4.2 [10mW/m2/nm] e_logFlux ?=9.99 Log of the flux error
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Byte-by-byte Description of file: spg/* spn/*
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Bytes Format Units Label Explanations
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1- 4 I4 0.1nm lambda Wavelength
6- 11 F6.2 [10mW/m2/nm] LogFlux Logarithm of the flux
13- 16 F4.2 [10mW/m2/nm] E_LogFlux Log of the positive flux error
17 A1 --- --- [/]
18- 21 F4.2 [10mW/m2/nm] e_LogFlux ? Log of the negative flux error
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Byte-by-byte Description of file: spb/*
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Bytes Format Units Label Explanations
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1- 4 I4 0.1nm lambda Wavelength
6- 10 F5.2 [10mW/m2/sr] LogInten Log of radiation intensity
12- 15 F4.2 [10mW/m2/sr] E_LogInten Log (positive intensity error)
16 A1 --- --- [/ ]
17- 19 F3.2 [10mW/m2/sr] e_LogInten ? Log (negative intensity error)
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Byte-by-byte Description of file: spc/*
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Bytes Format Units Label Explanations
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1- 4 I4 0.1nm lambda Wavelength
6- 11 F6.1 10-15W/m2/nm Flux Flux
13- 15 F3.1 10-15W/m2/nm e_Flux Flux error
17- 24 A8 "h:m:s" Time Observation time, UT (hh:mm.ss)
26- 27 I2 h RAh Right ascension (B1950, epoch 1975.0)
28- 29 I2 min RAm Right ascension (B1950, epoch 1975.0)
30- 31 I2 sec RAs Right ascension (B1950, epoch 1975.0)
33 A1 --- DE- Declination sign (B1950, epoch 1975.0)
34- 35 I2 deg DEd Declination (B1950, epoch 1975.0)
36- 37 I2 arcmin DEm Declination (B1950, epoch 1975.0)
38- 39 I2 arcsec DEs Declination (B1950, epoch 1975.0)
41 A1 --- Diaphr [CBO] Diaphragm flag (G1)
43- 52 A10 "YYYY/MM/DD" Date Observation date (yyyy/mm/dd)
54- 67 A14 --- Name Name
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Byte-by-byte Description of file: sph/*
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Bytes Format Units Label Explanations
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1- 4 I4 0.1nm lambda Wavelength
6- 11 F6.2 [mW/m2] LogFlux Logarithm of the flux
13- 16 F4.2 [mW/m2] e_LogFlux Log of the flux error
18- 19 I2 h Time.h Observation time, UT, hours
20- 23 F4.1 min Time.m Observation time, UT, minutes
25- 26 I2 h RAh Right ascension (B1950, epoch 1975.0)
27- 28 I2 min RAm Right ascension (B1950, epoch 1975.0)
29- 30 I2 sec RAs Right ascension (B1950, epoch 1975.0)
32 A1 --- DE- Declination (B1950, epoch 1975.0)
33- 34 I2 deg DEd Declination (B1950, epoch 1975.0)
35- 36 I2 arcmin DEm Declination (B1950, epoch 1975.0)
37- 38 I2 arcsec DEs Declination (B1950, epoch 1975.0)
40 A1 --- Diaphr [CBO] Diaphragm flag (G1)
42- 51 A10 "YYYY/MM/DD" Date Observation date (yyyy/mm/dd)
53- 66 A14 --- Name Name
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Note (G1): Diaphragm flag as follows:
C = central diaphragm
O = offset diaphragm (96 square arcsec)
B = background diaphragm (3500 square arcsec)
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Acknowledgements:
Oleg Malkov, malkov(at)inasan.ru
(End) Vladislav Burnashev [CrAO], Elena Kilpio, Oleg Malkov [INASAN] 15-May-2017