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J/A+AS/146/13 uvby photometry of 4 CP stars (Adelman, 2000)
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uvby Photometry of the magnetic CP stars 20 Eri, HR 1297, 12 CMa, and HD 134214
Adelman S.J.
<Astron. Astrophys. Suppl. Ser. 146, 13 (2000)>
=2000A&AS..146...13A
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ADC_Keywords: Stars, peculiar ; Photometry, uvby
Keywords: stars: chemically peculiar - stars: individual: 20 Eri -
stars: individual: HR 1297 - stars: individual: 12 CMa -
stars: individual: HD 134214
Abstract:
Differential Stroemgren uvby observations from the Four College
Automated Photoelectric Telescope (FCAPT) are presented for the mCP
stars 20 Eri, HR 1297, 12 CMa, and HD 134214. Adelman & Boyce found
suggestions that the light curves of 20 Eri change between observing
seasons. Observations for two additional seasons confirm this behavior
and lead to an improved period of 1.928890 days. For HR 1297 a new
period of 15.7490 days was derived. The uvby light curves now appear
to be the same for different observing seasons. 12 CMa is found to be
a photometric variable with the 2.18010 day period determined from
magnetic measurements by Bohlender et al. Observations of the rapidly
oscillating Ap star HD 134214 confirm the lack of photometric
variability which is not associated with the rapid oscillations.
Objects:
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RA (2000) DE Designation(s)
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03 36 17.4 -17 28 01 20 Eri = HD 22470 = HR 1100 (table2.dat)
04 12 51.2 +22 24 48 HR 1297 = V1137 Tau = HD 26571 (table3.dat)
06 47 01.5 -21 00 55 12 CMa = HD 49333 = HR 2509 (table4.dat)
15 09 02.4 -13 59 59 HD 134214 = HI Lib (table5.dat)
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 68 130 New Photometry of 20 Eri
table3.dat 68 117 New Photometry of HR 1297
table4.dat 68 66 Photometry of 12 CMa
table5.dat 68 105 Photometry of HD 134214
tablea.dat 125 10 Average photometry
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See also:
J/A+AS/103/1 : 63 And, HD 192913, HR 8240 & 108 Aqr (Adelman+ 1994)
J/A+AS/106/333 : Alpha And, HD 184905, HR 8216 & HR 8434 (Adelman+ 1994)
J/A+AS/111/41 : 56 Tauri, HD 111133, HD 126515 and HD 215441 (Adelman+ 1994)
J/A+AS/114/253 : HD 11187, HD 14940, HD 15144, 20 Eri, HR 8933 (Adelman+ 1995)
J/PASP/109/9 : HR 1643, Theta Aur, 49 Cam, and HR 3724 (Adelman 1997)
J/A+AS/122/249 : HD32633, 25 Sex, HR 7224, and HD 200311 (Adelman, 1997)
J/A+A/329/579 : uvby photometry of theta CrB (Fabregat+ 1998)
J/A+AS/123/445 : uvby photometry of metallic + Hg-Mn stars (Adelman 1997)
J/A+AS/125/65 : HD 37776, HR 2258, HR 6958 & 108 Aqu (Adelman, 1997)
J/A+AS/125/497 : Theta Vir and 109 Vir uvby photometry (Adelman 1997)
J/A+AS/128/245 : AR Aur, 3 Hya, 49 Cnc & BX Boo (Adelman 1997)
J/A+A/333/952 : BVRI photometry of HR 1105 (Adelman 1998)
J/A+AS/136/379 : 45 Leo, HR 4330, 47 Her & HR 6718 (Adelman+ 1999)
Byte-by-byte Description of file: table2.dat table3.dat table4.dat table5.dat
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Bytes Format Units Label Explanations
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1- 12 F12.4 d HJD Heliocentric Julian Date
14- 19 F6.3 mag u(v-c) variable-comparison (v-c) u magnitude
21- 26 F6.3 mag u(ch-c) check-comparison (ch-c) u magnitude
28- 33 F6.3 mag v(v-c) variable-comparison (v-c) v magnitude
35- 40 F6.3 mag v(ch-c) check-comparison (ch-c) v magnitude
42- 47 F6.3 mag b(v-c) variable-comparison (v-c) b magnitude
49- 54 F6.3 mag b(ch-c) check-comparison (ch-c) b magnitude
56- 61 F6.3 mag y(v-c) variable-comparison (v-c) y magnitude
63- 68 F6.3 mag y(ch-c) check-comparison (ch-c) y magnitude
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Byte-by-byte Description of file: tablea.dat
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Bytes Format Units Label Explanations
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1 I1 --- Table [2,5] Table number with detailed photometry
3- 11 A9 --- Name Star name
13- 21 A9 yr Years Period of observation
23- 28 F6.3 mag u(v-c) Variable-comparison (v-c) u magnitude
30- 34 F5.3 mag e_u(v-c) rms uncertainty on u(v-c)
36- 41 F6.3 mag u(ch-c) ? Check-comparison (ch-c) u magnitude
43- 47 F5.3 mag e_u(ch-c) ? rms uncertainty on u(ch-c)
49- 54 F6.3 mag v(v-c) Variable-comparison (v-c) v magnitude
56- 60 F5.3 mag e_v(v-c) rms uncertainty on v(v-c)
62- 67 F6.3 mag v(ch-c) ? Check-comparison (ch-c) v magnitude
69- 73 F5.3 mag e_v(ch-c) ? rms uncertainty on (ch-c)
75- 80 F6.3 mag b(v-c) Variable-comparison (v-c) b magnitude
82- 86 F5.3 mag e_b(v-c) rms uncertainty on b(v-c)
88- 93 F6.3 mag b(ch-c) ? Check-comparison (ch-c) b magnitude
95- 99 F5.3 mag e_b(ch-c) ? rms uncertainty on b(ch-c)
101-106 F6.3 mag y(v-c) Variable-comparison (v-c) y magnitude
108-112 F5.3 mag e_y(v-c) rms uncertainty on y(v-c)
114-119 F6.3 mag y(ch-c) ? Check-comparison (ch-c) y magnitude
121-125 F5.3 mag e_y(ch-c) ? rms uncertainty on y(ch-c)
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Acknowledgements: Saul J. Adelman <ADELMANS@adelvx.citadel.edu>
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(End) Patricia Bauer [CDS] 03-Aug-2000