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J/PASP/109/9 Photometry of chemically peculiar stars (Adelman+ 1997)
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Stromgrem uvby photometry of the magnetic chemically peculiar stars HR 1643,
Theta Aur, 49 Cam, and HR 3724
Adelman S.J.
<Publ. Astron. Soc. Pac. 109, 9 (1997)>
=1997PASP..109....9A (SIMBAD/NED BibCode)
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ADC_Keywords: Stars, peculiar ; Photometry, uvby
Abstract:
Differential Stromgren uvby photometric observations from the Four
College Automated Photoelectric Telescope of four magnetic Chemically
Peculiar stars are used to refine rotational periods and to define the
shapes of the light curves. HR 1643 (P=2.73475d) shows large phase
variability in all four magnitudes. Theta Aur (P=3.6188d) exhibits
large amplitude variations with two components contributing to the
minima. For 49 Cam (P=4.28679d), we probably are observing both polar
regions and much of the surface. The values for HR 3724 (P=33.984d)
confirm Wolff's result that the main variability is in v.
Objects:
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RA (2000) DE Designation(s)
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05 12 22.4 +73 56 49 HR 1643 = HD 32650 = BN Cam
05 59 43.0 +37 12 49 theta Aur = HD 40312 = HR 2095 = 37 Aur
07 46 27.6 +62 49 53 49 Cam = HD 62140 = HR 2977 = BC Cam
09 22 50.9 -09 50 19 HR 3724 = HD 81009 = KU Hya
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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 69 uvby Photometry for HR 1643
table3.dat 68 47 uvby Photometry for Theta Aur
table4.dat 68 89 uvby Photometry for 49 Cam
table5.dat 68 254 uvby Photometry for HR 3724
tablea 120 21 Averaged values
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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/114/253 : HD 11187, HD 14940, HD 15144, 20 Eri, HR 8933 (Adelman+ 1995)
J/A+AS/122/249 : HD 32633, 25 Sex, HR 7224 & HD 200311 (Adelman, 1997)
J/A+AS/125/65 : HD 37776, HR 2258, HR 6958 & 108 Aqr (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+AS/133/197 : 33 Tau, HD 50169 and HR 7786 (Adelman+ 1998)
J/A+AS/134/53 : HD 15980, HR 1094, 33 Gem and HD 115708 (Adelman 1999)
J/A+AS/136/111 : HD 35298, 19 Lyr, HD 192678 and HR 8216 (Adelman 1999)
Byte-by-byte Description of file: table*.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 b(v-c) variable-comparison (v-c) b magnitude
35-40 F6.3 mag b(ch-c) check-comparison (ch-c) b magnitude
42-47 F6.3 mag v(v-c) variable-comparison (v-c) v magnitude
49-54 F6.3 mag v(ch-c) check-comparison (ch-c) v 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
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Bytes Format Units Label Explanations
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1- 9 A9 --- Star Star name
11- 16 A6 --- Per Period considered (1)
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 (v-c) u magnitude
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 (ch-c) u magnitude
44- 49 F6.3 mag b(v-c) variable-comparison (v-c) b magnitude
51- 55 F5.3 mag e_b(v-c) ? rms uncertainty on (v-c) b magnitude
57- 62 F6.3 mag b(ch-c) check-comparison (ch-c) b magnitude
64- 68 F5.3 mag e_b(ch-c) ? rms uncertainty on (ch-c) b magnitude
70- 75 F6.3 mag v(v-c) variable-comparison (v-c) v magnitude
77- 81 F5.3 mag e_v(v-c) ? rms uncertainty on (v-c) v magnitude
83- 88 F6.3 mag v(ch-c) check-comparison (ch-c) v magnitude
90- 94 F5.3 mag e_v(ch-c) ? rms uncertainty on (ch-c) v magnitude
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 (v-c) y magnitude
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 (ch-c) y magnitude
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Note (1): Period considered:
For HR 1643: year 2: from 2448531.9511 to 2448605.8525
year 3: from 2449019.7156 to 2449058.6251
year 4: from 2449253.8931 to 2449411.6532
year 5: from 2449644.9089 to 2449754.7141
For 49 Cam : year 1: from 2448207.8560 to 2448332.6985
year 3: from 2449086.6603 to 2449088.6600
year 4: from 2449344.9103 to 2449445.6397
year 5: from 2449688.9632 to 2449815.6664
For HR 3724 : year 1: from 2448212.9338 to 2448354.7019
year 2: from 2448568.0029 to 2448750.6338
year 3: from 2449009.7602 to 2449111.6652
year 4: from 2449334.9479 to 2449482.6388
year 5: from 2449676.9983 to 2449839.6395
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Origin: AAS CD-ROM series, Volume 7, 1996 Lee Brotzman [ADS] 04-Nov-1996
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(End) Patricia Bauer [CDS] 11-Feb-1997