J/A+A/357/548 ubvy Photometry of magnetic CP stars (Adelman+, 2000)
uvby Photometry of the magnetic CP stars
HD 36668, 36 Lyncis, HD 86952, and HR 8861
Adelman S.J.
<Astron. Astrophys. 357, 548 (2000)>
=2000A&A...357..548A 2000A&A...357..548A
ADC_Keywords: Stars, peculiar ; Photometry, uvby
Keywords: stars: individual: HD 36668, 36 Lyn, HR 1297, HR 8861 -
stars: chemically peculiar
Abstract:
Differential Stroemgren uvby photometric observations from the Four
College Automated Photoelectric Telescope (FCAPT) are presented for
the magnetic CP stars HD 36668, 36 Lyn, HD 86592, and HR 8861. Using
the FCAPT values, North's period for HD 36668 is refined to 2.11884
days. The 3.834 day period of Shore et al. (1990ApJ...348..242S 1990ApJ...348..242S) for
36 Lyn, which was found from magnetic field measurements, is confirmed
by photometry. The FCAPT observations also support the 2.8867 day
period of Babel & North (1997A&A...325..195B 1997A&A...325..195B) for HD 86592,
demonstrate that this star is a large amplitude variable in v (0.13
mag), and show that y varies crudely out of phase from u, v, and b
which are in phase with one another. The variability of HR 8861
appears to be correlated with the meridional passages of regions of Si
over- and underabundance as found by Piskunov et al.
(1994A&A...291..910P 1994A&A...291..910P)
Objects:
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RA (2000) DE Designation(s)
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05 33 26.1 +00 37 17 HD 36668
09 13 48.2 +43 13 04 36 Lyn
04 12 51.2 +22 24 48 HR 1297
23 17 56.0 +45 29 20 HR 8861
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 68 115 Photometry of HD 36668
table3.dat 68 61 Photometry of 36 Lyn
table4.dat 68 122 Photometry of HD 86592
table5.dat 68 58 Photometry of HR 8861
tablea.dat 122 15 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 (North+, 1995)
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/134/53 : HD 15980, HR 1094, 33 Gem, and HD 115708 (Adelman 1998)
J/A+AS/136/111 : HD 35298, 19 Lyr, HD 192678 and HR 8216 (Adelman+ 1999)
J/A+AS/136/379 : 45 Leo, HR 4330, 49 Her and HR 6718 (Adelman+ 1999)
J/A+A/368/225 : HR 5341, HD 142070, HR 6967 & HR 8434 (Adelman, 2001)
J/A+A/390/1023 : HR 194, HD 32966, HD 171782, and HR 7911 (Adelman+, 2002)
J/A+A/401/357 : 60 Tau, HR 1528, HR 8216, HR 8770 (Adelman+, 2003)
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- 10 A8 --- Name Star name
12- 18 A7 --- Years Period of observation
20- 25 F6.3 mag umag1 Variable-comparison (v-c) u magnitude
27- 31 F5.3 mag e_umag1 rms uncertainty on umag1
33- 38 F6.3 mag umag2 ? Check-comparison (ch-c) u magnitude
40- 44 F5.3 mag e_umag2 ? rms uncertainty on umag2
46- 51 F6.3 mag vmag1 Variable-comparison (v-c) v magnitude
53- 57 F5.3 mag e_vmag1 rms uncertainty on vmag1
59- 64 F6.3 mag vmag2 ? Check-comparison (ch-c) v magnitude
66- 70 F5.3 mag e_vmag2 ? rms uncertainty on vmag2
72- 77 F6.3 mag bmag1 Variable-comparison (v-c) b magnitude
79- 83 F5.3 mag e_bmag1 rms uncertainty on bmag1
85- 90 F6.3 mag bmag2 ? Check-comparison (ch-c) b magnitude
92- 96 F5.3 mag e_bmag2 ? rms uncertainty on bmag2
98-103 F6.3 mag ymag1 Variable-comparison (v-c) y magnitude
105-109 F5.3 mag e_ymag1 rms uncertainty on ymag1
111-116 F6.3 mag ymag2 ? Check-comparison (ch-c) y magnitude
118-122 F5.3 mag e_ymag2 ? rms uncertainty on ymag2
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Acknowledgements: Saul J. Adelman
(End) Patricia Bauer [CDS] 04-May-2000