J/A+A/329/579 uvby photometry of theta CrB (Fabregat+ 1998)
uvby photometry of theta Coronae Borealis during 1994 and 1995
Fabregat J., Adelman S.J.
<Astron. Astrophys. 329, 579 (1998)>
=1998A&A...329..579F 1998A&A...329..579F (SIMBAD/NED BibCode)
ADC_Keywords: Stars, Be ; Photometry, uvby
Keywords: stars: emission-line, Be - stars: individual: theta CrB
Abstract:
We present differential uvby photometry of θ CrB obtained in
1994 and 1995, complemented by Balmer line spectroscopy. This star has
been constant during this period, showing no short term periodic
variability with an amplitude greater than 0.005mag., nor long term
variations greater than 0.01mag. The lack of variability is associated
with an inactive phase of the Be star, in which no emission features
are present in the spectra. The only remarkable event observed was a
fading episode on JD 2449779, with an amplitude of about 0.02
magnitudes in all bandpasses and duration of 0.2-0.3 days.
Objects:
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RA (2000) DE Designation(s)
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15 32 55.8 +31 21 33 theta CrB = HD 138749 = HR 5778
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File Summary:
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FileName Lrec Records Explanations
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ReadMe 80 . This file
table2aa.dat 43 47 CAM photometry, v-c data
table2ab.dat 43 21 CAM photometry, c-ch data
table2b.dat 152 219 FCAPT photometry, all data
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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+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 1997)
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/357/548 : HD 36668, 36 Lyn, HD 86952 & HR 8861 (Adelman 2000)
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, 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: table2aa.dat table2ab.dat
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Bytes Format Units Label Explanations
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1- 11 F11.3 d HJD Julian date
12- 19 F8.3 mag Dymag Differential magnitude, y filter
20- 27 F8.3 mag Dbmag Differential magnitude, b filter
28- 35 F8.3 mag Dvmag Differential magnitude, v filter
36- 43 F8.3 mag Dumag Differential magnitude, u filter
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Byte-by-byte Description of file: table2b.dat
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Bytes Format Units Label Explanations
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1- 12 F12.4 d HJDu Julian date for the u filter data
13- 20 F8.3 mag Du(v-c) v-c differential magnitude, u filter
21- 28 F8.3 mag Du(v-ch) v-ch differential magnitude, u filter
29- 36 F8.3 mag Du(c-ch) ? c-ch differential magnitude, u filter
39- 50 F12.4 d HJDv Julian date for the v filter data
51- 58 F8.3 mag Dv(v-c) v-c differential magnitude, v filter
59- 66 F8.3 mag Dv(v-ch) v-ch differential magnitude, v filter
67- 74 F8.3 mag Dv(c-ch) c-ch differential magnitude, v filter
77- 88 F12.4 d HJDb Julian date for the b filter data
89- 96 F8.3 mag Db(v-c) v-c differential magnitude, b filter
97-104 F8.3 mag Db(v-ch) v-ch differential magnitude, b filter
105-112 F8.3 mag Db(c-ch) c-ch differential magnitude, b filter
115-126 F12.4 d HJDy Julian date for the y filter data
127-134 F8.3 mag Dy(v-c) v-c differential magnitude, y filter
135-142 F8.3 mag Dy(v-ch) v-ch differential magnitude, y filter
143-150 F8.3 mag Dy(c-ch) c-ch differential magnitude, y filter
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Acknowledgements: Juan Fabregat
(End) Patricia Bauer [CDS] 02-Dec-1997