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J/A+AS/133/197 uvby Photometry of 33 Tau, HD 50169 and HR 7786 (Adelman+ 1998)
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uvby photometry of 33 Tauri, HD 50169, and HR 7786 and an assessment of
FCAPT comparison stars
Adelman S.J., Pi C.-L.M., Rayle K.
<Astron. Astrophys. Suppl. Ser. 133, 197 (1998)>
=1998A&AS..133..197A (SIMBAD/NED BibCode)
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ADC_Keywords: Photometry, uvby ; Stars, peculiar
Keywords: stars: individual: 33 Tauri, HD 50169, HR 7786, HR 7721 -
stars: chemically peculiar
Abstract:
Differential Stroemgren uvby photometric observations from the Four
College Automated Photoelectric Telescope are presented for the
ellipsoidal variable 33 Tauri, and the magnetic Chemically Peculiar
stars HD 50169 and HR 7786. We confirm that Hube's period of 2.975272
days for 33 Tau is correct. HD 50169 is a constant MCP star. HR 7786
is a large amplitude class member confirming Winzer's discovery, but
its period is 8.5297 days. Its comparison star, HR 7721, a
spectroscopic binary B7 V star, is variable with an amplitude of order
0.1mag, but of indeterminant period. In addition Hipparcos photometry
of the comparison and check stars for early type stars whose
photometry is being obtained with the FCAPT is reviewed to ascertain
the stability of these stars.
Objects:
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RA (2000) DE Designation(s)
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03 57 03.7 +23 10 32 33 Tau = HD 24769
06 51 59.2 -01 38 40 HD 50169
20 19 56.0 +46 50 14 HR 7786 = HD 193722
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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 73 Photometry of 33 Tau
table3.dat 69 100 Photometry of HD 50169
table4.dat 68 205 Photometry of HR 7786
tablea.dat 120 11 Yearly means and standard deviations of
tables 2, 3 & 4
table5.dat 285 49 Hipparcos Photometry for Groups of B, A,
and F stars.
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See also:
J/A+AS/103/1 : ubvy photometry of magnetic CP stars (Adelman+ 1994)
J/A+AS/106/333 : uvby photometry of four CP stars (Adelman+ 1994)
J/A+AS/111/41 : Photometry of magnetic CP stars (North+, 1995)
J/A+AS/114/253 : uvby Photometry of Magnetic CP Stars (Adelman+, 1995)
J/A+AS/122/249 : uvby photometry of 4 CP stars (Adelman, 1997)
J/A+AS/125/65 : uvby photometry of 4 CP stars (Adelman, 1997)
J/A+AS/128/245 : Photometry of chemically peculiar stars (Adelman+ 1998)
J/A+A/329/579 : uvby photometry of theta CrB (Fabregat+ 1998)
Byte-by-byte Description of file: table2.dat, table3.dat, table4.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- 8 A8 --- Name Star name
10- 16 A7 --- Per Period
18- 23 F6.3 mag u(v-c) Variable-comparison (v-c) u magnitude
25- 29 F5.3 mag e_u(v-c) rms uncertainty on u(v-c)
31- 36 F6.3 mag u(ch-c) Check-comparison (ch-c) u magnitude
38- 42 F5.3 mag e_u(ch-c) rms uncertainty on u(ch-c)
44- 49 F6.3 mag v(v-c) Variable-comparison (v-c) v magnitude
51- 55 F5.3 mag e_v(v-c) rms uncertainty on v(v-c)
57- 62 F6.3 mag v(ch-c) Check-comparison (ch-c) v magnitude
64- 68 F5.3 mag e_v(ch-c) rms uncertainty on v(ch-c)
70- 75 F6.3 mag b(v-c) Variable-comparison (v-c) b magnitude
77- 81 F5.3 mag e_b(v-c) rms uncertainty on b(v-c)
83- 88 F6.3 mag b(ch-c) Check-comparison (ch-c) b magnitude
90- 94 F5.3 mag e_b(ch-c) rms uncertainty on b(ch-c)
96-101 F6.3 mag y(v-c) Variable-comparison (v-c) y magnitude
103-107 F5.3 mag e_y(v-c) rms uncertainty on y(v-c)
109-114 F6.3 mag y(ch-c) Check-comparison (ch-c) y magnitude
116-120 F5.3 mag e_y(ch-c) rms uncertainty on y(ch-c)
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 21 A21 --- Var Variable star name(s)
22- 28 F7.4 mag Varmag ? Mean magnitude of star Var
30- 35 F6.4 mag e_Varmag ? rms uncertainty on Varmag
37- 40 F4.2 mag VarAmp ? Amplitude of star Var
42- 63 A22 --- VarComm Comments for star Var
65- 83 A19 --- Comp Comparison star name(s)
85- 90 F6.4 mag Compmag ? Mean magnitude of star Comp
92- 97 F6.4 mag e_Compmag ? rms uncertainty on Compmag
99-102 F4.2 mag CompAmp ? Amplitude of star Comp
104-123 A20 --- CompComm Comments for star Comp
125-147 A23 --- ch Check star name(s)
149-154 F6.4 mag chmag ? Mean magnitude of ch star
156-161 F6.4 mag e_chmag ? rms uncertainty on chmag
163-166 F4.2 mag chAmp ? Amplitude of ch star
168-184 A17 --- chCom Comments for ch star
185-203 A19 --- oc Old comparison star name (s)
205-210 F6.4 mag ocmag ? Mean magnitude of oc star
212-217 F6.4 mag e_ocmag ? rms uncertainty on ocmag
219-222 F4.2 mag ocAmp ? Amplitude of oc star
224-242 A19 --- oh Old check star name(s)
244-249 F6.4 mag ohmag ? Mean magnitude of oh star
251-256 F6.4 mag e_ohmag ? rms uncertainty on ohmag
258-261 F4.2 mag ohamp ? Amplitude of oh star
263-276 A14 --- ocComm Comments for oh star
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Acknowledgements: Saul J. Adelman <ADELMANS@adelvx.citadel.edu>
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(End) Patricia Bauer [CDS] 02-Jun-1998