J/A+AS/98/505 Walraven photometry near AG Car (Hoekzemal+ 1993)
Walraven photometry of stars near the Luminous Blue Variable AG Carinae
Hoekzemal N.M., Lamers H.J.G.L.M., van Genderen A.M.
<Astron. Astrophys. Suppl. Ser. 98, 505 (1993)>
=1993A&AS...98..505H 1993A&AS...98..505H
ADC_Keywords: Photometry, VBLUW ; Stars, early-type
Keywords: interstellar extinction - photometry -
stars: colors, early type, individual
Abstract:
We present Walraven-photometric data of 114 stars of 5.9<V<14.7 within
17 arcmin of the Luminous Blue Variable AG Car (HD 94910). The results
are expressed in terms of V-magnitude in the Johnson system and in
observed and extinction-free colours in the Walraven system.
For a description of the Walraven photometric system, see e.g. GCPD/11
Objects:
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RA (2000) DE Designation(s)
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10 56 11.6 -60 27 13 AG Car = HD 94910
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 31 114 Program stars
table2.dat 95 201 Walraven photometry of stars near AG Car
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 2 I2 h RAh Right ascension, Equinox 1988 (1)
4- 5 I2 min RAm Right ascension, Equinox 1988 (1)
7- 8 I2 s RAs Right ascension, Equinox 1988 (1)
10- 16 F7.3 deg DEdeg Declination, Equinox 1988 (1)
18- 24 A7 --- Name Star name
26- 31 F6.3 mag Vmag Johnson-V magnitude
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Note (1): The coordinates are derived from the telescope setting;
the 1988 equinox is assumed, the DE seems to be in error by 11'
(11' should be substracted to get 1988 Declination).
The accuracy is ±4s in RA, ±.005deg in DE
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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- 7 A7 --- Name Star name
9- 15 I7 d HJD Heliocentric Julian date
17- 23 F7.4 mag Vmag Walraven V magnitude
25- 30 F6.4 mag (V-B) Observed (V-B) colour index in Walraven system
32- 37 F6.4 mag (B-U) ? Observed (B-U) colour index in Walraven system
39- 45 F7.4 mag (U-W) ? Observed (U-W) colour index in Walraven system
47- 53 F7.4 mag (B-L) ? Observed (B-L) colour index in Walraven system
55 A1 --- qV [0-9*] Quality factor on V Walraven-filter (1)
56 A1 --- qB [0-9*] Quality factor on B Walraven-filter (1)
57 A1 --- qL [0-9*] Quality factor on L Walraven-filter (1)
58 A1 --- qU [0-9*] Quality factor on U Walraven-filter (1)
59 A1 --- qW [0-9*] Quality factor on W Walraven-filter (1)
61- 63 A3 --- Obs Observers (2)
65- 71 F7.4 mag [B-U] ? Extintion-free colour [B-U]
73- 79 F7.4 mag [U-W] ? Extintion-free colour [U-W]
81- 87 F7.4 mag [B-L] ? Extintion-free colour [B-L]
89- 95 F7.4 mag {B-L} ? Extintion-free colour {B-L}
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Note (1): The quality range from 0=excellent to 9=unreliable.
* indicates a faulty measurement
Note (2): NMH=Hoekzema, LAR=Larsen, WAN=Wanders
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History: Prepared via OCR at CDS.
(End) James Marcout, Patricia Bauer [CDS] 19-Feb-1997