J/A+A/619/A85 54 new eccentric galactic eclipsing binaries (Zasche+, 2018)
The first study of 54 new eccentric eclipsing binaries in our Galaxy.
Zasche P., Wolf M., Uhlar R., Cagas P., Jurysek J., Masek M., Honkova K.,
Kucakova H., Lehky M., Kotkova L., White G.J., Bewsher D., Tylsar M.,
Jelinek M., Paschke A.
<Astron. Astrophys. 619, A85 (2018)>
=2018A&A...619A..85Z 2018A&A...619A..85Z (SIMBAD/NED BibCode)
ADC_Keywords: Binaries, eclipsing
Keywords: binaries: eclipsing - stars: fundamental parameters - stars: general
Abstract:
We present an analysis of the apsidal motion and light curve
parameters of 54 never-before-studied galactic Algol-type binaries.
This is the first analysis of such a large sample of eccentric
eclipsing binaries in our Galaxy, and has enabled us to identify
several systems that are worthy of further study. Bringing together
data from various databases and surveys, supplemented with new
observations, we have been able to trace the long-term evolution of
the eccentric orbit over durations extending back up to several
decades. Our present study explores a rather different sample of stars
to those presented in the previously published catalogue of eccentric
eclipsing binaries, sampling to fainter magnitudes, covering later
spectral types, sensitive to different orbital periods with more than
50% of our systems having periods longer than six days. The typical
apsidal motion in the sample is rather slow (mostly of order of
centuries long), although in some cases this is less than 50yr. All
of the systems, except one, have eccentricities less than 0.5, with an
average value of 0.23. Several of the stars also show evidence for
additional period variability. In particular we can identify three
systems in the sample, HD 44093, V611 Pup, and HD 313631, which likely
represent relativistic apsidal rotators.
Description:
We have derived the preliminary apsidal motion and light curve
parameters for 54 Algol-type binaries. This is the first time any such
analysis of such a large sample of eccentric eclipsing binaries has
been studied in our Galaxy using different sources of photometry.
Bringing together data from various databases and surveys has
facilitated estimation of the long-term evolution of the orbit and the
apsidal precession of our sample.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 99 54 Relevant information for the analysed systems
table1.dat 81 1193 Heliocentric minima of the systems used for
our analysis
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Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 16 A16 --- Star Name of the star
18- 41 A24 --- OName Other name
43- 44 I2 h RAh Right ascension (J2000)
46- 47 I2 min RAm Right ascension (J2000)
49- 54 F6.3 s RAs Right ascension (J2000)
56 A1 --- DE- Declination sign (J2000)
57- 58 I2 deg DEd Declination (J2000)
60- 61 I2 arcmin DEm Declination (J2000)
63- 67 F5.2 arcsec DEs Declination (J2000)
69- 73 F5.2 mag Vmax Maximun magnitude in V band (1)
75- 80 F6.3 mag J-H 2MASS J-H colour index (2)
82- 86 F5.2 mag B-V ? B-V colour index (1)
88- 96 A9 --- SpType MK spectral type
98- 99 I2 --- r_SpType ? Refenrece for SpType (3)
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Note (1): value based on APASS (Henden et al., 2015, Cat. II/336) or
Tycho catalogue (Hog et al., 2000, Cat. I/259).
Note (2): 2MASS catalogue, Skrutskie et al. (2006, Cat. VII/233).
Note (3): References as follows:
1 = Rydstroem (1978A&AS...32...25R 1978A&AS...32...25R)
2 = Tucker et al. (1983, Cat. I/144)
3 = Morgan (1933ApJ....77...77M 1933ApJ....77...77M)
4 = Parihar et al. (2009, Cat. J/MNRAS/395/593)
5 = Houk & Swift (1999, Cat. III/214)
6 = Houk & Smith-Moore (1988, Cat. III/133)
7 = Houk (1982, Cat. III/80)
8 = Houk & Cowley (1975, Cat. III/31)
9 = Nesterov et al. (1995, Cat. III/182)
10 = Garrison et al. (1977ApJS...35..111G 1977ApJS...35..111G)
11 = Houk (1978, Cat. III/51)
12 = Stephenson & Sanduleak (1971, Cat. III/43)
13 = Ginestet & Carquillat (2002, Cat. J/ApJS/143/513)
14 = Alknis (1958TrRig...7...33A 1958TrRig...7...33A)
15 = Dyson (1935, Second Greenwich Catalogue of stars for 1925.0
by F.W. Dyson. London, 1935)
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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2- 18 A17 --- Star Name of the star
21- 31 F11.5 d HJD Heliocentric JD of Minimum (HJD-2400000)
35- 41 F7.5 d e_HJD ? Error of HJD
45 A1 --- Type Type of Minimum (primary/secondary)
50- 53 A4 --- Filter Filter used
56- 81 A26 --- Ref Source/Observatory
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Acknowledgements:
Petr Zasche, petr.zasche(at)email.cz
(End) Patricia Vannier [CDS] 29-May-2018