J/A+A/355/171 TZ Boo & Y Sex orbital periods (Qian+, 2000)
Orbital period studies of the two contact binaries TZ Bootis and Y Sextantis.
Qian S., Liu Q.
<Astron. Astrophys. 355, 171 (2000)>
=2000A&A...355..171Q 2000A&A...355..171Q
ADC_Keywords: Binaries, eclipsing ; Ephemerides
Keywords: stars: binaries: close - stars: individual: TZ Boo -
stars: late-type - stars: magnetic fields - stars: individual: Y Sex
Description:
TZ Boo and Y Sex are two A-type contact binaries. At the set, times of
light minimum of the two stars were collected.
Objects:
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RA (2000) DE Designation(s)
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15 08 09.1 +39 58 13 TZ Boo
10 02 48.0 +01 05 40 Y Sex = HD 87079
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 44 82 Times of light minimum for TZ Boo
table4.dat 47 24 Times of light minimum for Y Sex
tables.tex 113 103 LaTeX version of the tables
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 12 F12.4 d HJD The original times of light minimum
14- 16 A3 --- Method Methods used to observe (1)
18- 25 F8.1 --- cycleE Epoch number of the original timings
27- 33 F7.4 d (O-C)1 (O-C) values computed with ephemeris 1 (2)
35- 41 F7.4 d (O-C)2 (O-C) values computed with ephemeris 2 (2)
43- 44 I2 --- Ref The original references (3)
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Note (1):"vis" refers to visual and "pe" to photoelectric.
Note (2): Ephemeris:
1 : MinI = 2439632.8418 + 0.2971620E
2 : MinI = 2439632.8525(±0.0004) + 0.29716063(±7.10-8)E
-4.8(±0.3).10-11E2
Note (3): References for TZ Boo:
(1) Szafraniec (1953Roczn..24...72S 1953Roczn..24...72S) (Roczn. Astron. Obs. Krakow)
(2) Koch (1956AJ.....61...47K 1956AJ.....61...47K)
(3) Szafraniec (1957Roczn..28..107S 1957Roczn..28..107S) (Roczn. Astron. Obs. Krakow)
(4) Dueball and Lehmann (1965AN....288..167D 1965AN....288..167D)
(5) Binnendijk (1969AJ.....74..211B 1969AJ.....74..211B)
(6) Carr (1971PGooO..16.....C 1971PGooO..16.....C) (Publ. of the Goodsell Observatory)
(7) Lipari and Sistero (1987AJ.....94..792L 1987AJ.....94..792L)
(8) Kizilirmak (1974IBVS..937....1K 1974IBVS..937....1K)
(9) Hoffmann (1980A&AS...40..263H 1980A&AS...40..263H)
(10) Pohl et al. (1978IBVS.1924....1P 1978IBVS.1924....1P)
(11) Hoffmann (1980IBVS.1877....1H 1980IBVS.1877....1H)
(12) Hoffmann (1981IBVS.1980....1H 1981IBVS.1980....1H)
(13) Grobel (1989IBVS.3299....1G 1989IBVS.3299....1G)
(14) Pohl et al. (1985IBVS.2793....1P 1985IBVS.2793....1P)
(15) Pohl et al. (1987IBVS.3078....1P 1987IBVS.3078....1P)
(16) Keskin and Pohl (1989IBVS.3355....1K 1989IBVS.3355....1K)
(17) Wunder et al. (1992IBVS.3760....1W 1992IBVS.3760....1W)
(18) Schaub (1990IBVS.3524....1S 1990IBVS.3524....1S)
(19) Agerer and Hubscher (1995IBVS.4222....1A 1995IBVS.4222....1A)
(20) Agerer and Hubscher (1996IBVS.4383....1A 1996IBVS.4383....1A)
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 12 F12.4 d HJD The original times of light minimum
14- 15 A2 --- MinTime Types of the timings (1)
17- 19 A3 --- Method Methods used to observe (2)
21- 28 F8.1 --- cycleE Epoch number of the original timings
30- 36 F7.4 d (O-C)1 (O-C) values computed with ephemeris 5 (3)
38- 44 F7.4 d (O-C)2 (O-C) values computed with ephemeris 6 (3)
46- 47 I2 --- Ref The original references (4)
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Note (1): "I" refers to primary and "II" to secondary
Note (2): "vis" refers to visual, "pg" to photographic and "pe" to photoelectric
Note (3): Ephemeris:
5 : MinI = 2434445.9912 + 0.41981391E
6 : MinI = 2434445.9786(±0.0001) + 0.41981527(±2.10-8)E
+3.14(±0.02).10-11E2
Note (4): References for Y Sex:
1) Gaposchkin (1953, Harvard Ann. 113, No. 1)
2) Prikhodko (1947PZ......6..136P 1947PZ......6..136P)
3) Tanabe and Nakamura (1957, Ann. Tokyo Astro. Obs., 2nd Ser., 5)
4) Szafraniec (1962AcA....12..181S 1962AcA....12..181S)
5) Hill (1979PDAO...15..298H 1979PDAO...15..298H)
6) Herczeg (1993PASP..105..911H 1993PASP..105..911H)
7) Yulan and Qingyao (1982IBVS.2202....1Y 1982IBVS.2202....1Y)
8) refer to minima from Besancon Data Base by Internet;
http://bdb.obs-besancon.fr
9) Agerer and Hubscher (1998IBVS.4562....1A 1998IBVS.4562....1A)
10) Agerer and Hubscher (1998IBVS.4606....1A 1998IBVS.4606....1A)
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Acknowledgements: Shengbang Qian
Yunnan Observatory
Chinese Academy of Sciences,
P. O. Box 110
Kunming 650011
China
(End) Patricia Bauer [CDS] 11-Apr-2000