J/A+A/401/357 uvby photometry of 2 Am and 2 mCP stars (Adelman+, 2003)
uvby Photometry of the Am stars 60 Tau and HR 1528 and
the mCP stars HR 8216 and HR 8770
Adelman S.J.
<Astron. Astrophys. 401, 357 (2003)>
=2003A&A...401..357A 2003A&A...401..357A
ADC_Keywords: Stars, peculiar ; Stars, Am ; Photometry, uvby
Keywords: stars: chemically peculiar -
stars: individual: 60 Tau, HR 1528, HR 8216, HR 8770
Abstract:
Differential Stroemgren uvby observations from the Four College
Automated Photoelectric Telescope (FCAPT) are presented for the
metallic-lined stars 60 Tau and HR 1528 and the magnetic Chemically
Peculiar stars HR 8216 and HR 8770. The first star, which is a δ
Scuti variable, was found not to change its mean magnitudes. HR 1528
is best described as constant. A decade of photometry of HR 8216 shows
that its b and y values have changed by -0.016 and -0.010mag,
respectively, over this time and now can be considered a photometric
variable. For HR 8770 a period of 5.3923 days is derived with the
photometric variability being generally in phase. The light curves
also suggest possible surface abundance inhomogeneities.
Objects:
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RA (2000) DE Designation(s)
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04 22 03.5 +14 04 38 60 Tau = HD 27628
04 49 19.1 +32 35 17 HR 1528 = HD 30453
21 26 51.6 +48 50 07 HR 8216 = HD 204411
23 02 43.9 +55 14 11 HR 8770 = HD 217833
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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 85 Photometry of 60 Tau
table3.dat 68 72 Photometry of HR 1528
table4.dat 68 116 Photometry of HR 8216
table6.dat 68 61 Photometry of HR 8770
tablea.dat 123 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 (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)
J/A+AS/146/13 : 20 Eri, HR 1297, 12 CMa & HD 134214 (Adelman 2000)
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 & HR 7911 (Adelman, 2002)
Byte-by-byte Description of file: table[2346].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 [2,6] Table number with detailed photometry
3- 9 A7 --- Name Star name
11- 14 I4 yr Year1 Period of observation
15 A1 --- --- [-]
16- 19 I4 yr Year2 Period of observation
21- 26 F6.3 mag u(v-c) Variable-comparison (v-c) u magnitude
28- 32 F5.3 mag e_u(v-c) rms uncertainty on u(v-c)
34- 39 F6.3 mag u(ch-c) Check-comparison (ch-c) u magnitude
41- 45 F5.3 mag e_u(ch-c) rms uncertainty on u(ch-c)
47- 52 F6.3 mag v(v-c) Variable-comparison (v-c) v magnitude
54- 58 F5.3 mag e_v(v-c) rms uncertainty on v(v-c)
60- 65 F6.3 mag v(ch-c) Check-comparison (ch-c) v magnitude
67- 71 F5.3 mag e_v(ch-c) rms uncertainty on (ch-c)
73- 78 F6.3 mag b(v-c) ? Variable-comparison (v-c) b magnitude
80- 84 F5.3 mag e_b(v-c) ? rms uncertainty on b(v-c)
86- 91 F6.3 mag b(ch-c) Check-comparison (ch-c) b magnitude
93- 97 F5.3 mag e_b(ch-c) rms uncertainty on b(ch-c)
99-104 F6.3 mag y(v-c) Variable-comparison (v-c) y magnitude
106-110 F5.3 mag e_y(v-c) rms uncertainty on y(v-c)
112-117 F6.3 mag y(ch-c) Check-comparison (ch-c) y magnitude
119-123 F5.3 mag e_y(ch-c) rms uncertainty on y(ch-c)
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Acknowledgements: Saul J. Adelman
(End) Patricia Bauer [CDS] 23-Jan-2003