J/PASP/102/1392 UBV photometry from HK survey. I (Doinidis+ 1990)
Photoelectric UBV photometry of Northern stars from the HK objective-prism
survey
Doinidis S.P., Beers T.C.
<Publ. Astron. Soc. Pac. 102, 1392 (1990)>
=1990PASP..102.1392D 1990PASP..102.1392D
ADC_Keywords: Photometry, UBV ; Stars, halo ; Stars, metal-deficient
Keywords: photometry - metal-poor stars - halo stars
Abstract:
Photoelectric photometry is presented for a sample of 139 halo stars
drawn an extension of the HK (Ca II H & K lines) objective-prism
survey of Beers, Preston and Shectmann (1988ApJS...67..461) to the
Northern Galactic hemisphere. The candidates for which photometry is
reported here were selected to span a wide range of types, but are
dominated by stars classified as type AB, A, or "metal-poor" (MP).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 56 28 Summary of standard star data
table4.dat 73 139 Summary of photoelectric data for program stars
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See also:
II/118 : UBVRI standards around Celestial Equator (Landolt 1983)
J/AJ/87/1515 : UBV photometry of AB stars in halo (Pier, 1982)
J/ApJS/53/791 : Spectroscopy of AB stars in halo (Pier, 1983)
J/ApJS/76/1001 : UBV photometry of HK survey stars (Preston+, 1991)
J/PASP/103/973 : Photoelectric UBV from HK survey. II. (Doidinis+ 1991)
J/AJ/103/267 : Spectrocopy of hot stars in galactic halo (Beers+ 1992)
J/AJ/103/1987 : Stars of very low metal abundance (Beers+ 1992)
J/AJ/108/268 : HK survey emission-line candidates positions (Beers+ 1994)
J/AJ/108/538 : Metal-poor MS stars UBV photometry (Preston+ 1994)
J/AJ/112/1188 : HK survey emission-line candidates (Beers+ 1996)
J/AJ/117/2329 : Spectroscopy of hot stars in the halo. (Wilhelm+, 1999)
J/ApJS/123/639 : UBV photometry of metal-weak candidates (Norris+, 1999)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- Name Usual star name
13- 14 I2 --- N Number of nights on which the star was
observed (assumed explanation)
16- 21 F6.3 mag Vmag Standard V magnitude (1)
23- 28 F6.3 mag B-V Standard B-V color index (1)
30- 35 F6.3 mag U-B Standard U-B color index (1)
37- 42 F6.3 mag D(Vmag) Computed - Standard V magnitude
44- 49 F6.3 mag D(B-V) Computed - Standard B-V color index
51- 56 F6.3 mag D(U-B) Computed - Standard U-B color index
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Note (1): Data from Landolt (1983), Cat. II/118.
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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- 8 A8 --- BPS-BS BPS BS (FFFFF-NNN) designation
10- 11 I2 h RAh Right ascension (1950)
13- 14 I2 min RAm Right ascension (1950)
16- 19 F4.1 s RAs Right ascension (1950)
21 A1 --- DE- Declination sign
22- 23 I2 deg DEd Declination (1950)
25- 26 I2 arcmin DEm Declination (1950)
28- 29 I2 arcsec DEs Declination (1950)
31- 35 F5.1 deg GLON Galactic longitude
37- 41 F5.1 deg GLAT Galactic latitude
43- 47 F5.2 mag Vmag V magnitude
49- 53 F5.2 mag B-V B-V color index
55- 59 F5.2 mag U-B U-B color index
62- 65 F4.2 mag E(B-V) ? B-V color excess
68- 73 A6 --- Class Class (1)
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Note (1): Class codes are:
AB = type AB
A = type A
MP = metal poor candidate
C = continuous
P = peculiar
E = emission
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Table1: Summary of plate fields for program stars
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Plate RA (1950) DE GLON GLAT Stars observed
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BS 15621 10 17.9 +25 10 208.0 +56.2 57
BS 15622 12 52.2 +25 11 321.3 +87.7 1
BS 15623 13 58.3 +25 10 83.8 +64.8 1
BS 15625 11 46.1 +25 12 218.3 +75.7 8
BS 16026 12 26.1 +30 12 182.4 +84.3 55
BS 16027 13 12.2 +30 11 63.22 +84.2 17
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Table3: Comparison with previous photometric measurements of program stars
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This paper Other work
Star V B-V U-B V (B-V) (U-B) Source
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15625-002 10.68 +1.51 +1.19 10.68 +1.52 +1.23 6
15625-027 11.54 +0.30 +0.06 11.60 +0.26 +0.06 2
16026-010 10.10 +0.33 -0.03 10.08 +0.36 ... 3
16026-017 10.65 +1.44 +1.24 10.63 +1.46 +1.25 4
10.62 +1.42 +1.27 6
16026-056 11.00 +0.17 +0.11 11.04 +0.19 ... 3
11.05 +0.16 +0.09 2
11.00 +0.17 +0.07 1
16027-061 12.66 -0.14 -1.20 12.68 -0.12 -1.17 5
12.86 -0.10 -1.11 6
16-27-070 13.75 +0.04 +0.02 13.79 +0.07 +0.02 6
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References:
1. Slettebak et al. (1961ApJ...134..195S 1961ApJ...134..195S)
2. Klemola (1962AJ.....67..740K 1962AJ.....67..740K)
3. Ljunggren (1965ArA.....3..535L 1965ArA.....3..535L)
4. Upgren and Kerridge (1973)
5. Dahn et al. (1982AJ.....87..419D 1982AJ.....87..419D)
6. Mermilliod and Mermilliod (1990, in prep)
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History: Prepared via OCR at CDS.
(End) James Marcout, Patricia Bauer [CDS] 14-Feb-1997