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## (from tabmap V6.0 (2016-08-18)) 2024-04-19T21:29:40
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#-- V/119 Catalogue of field contact binary stars (Pribulla+, 2003)
#--------------------------------------------------------------------------
#---Table: V/119/./notes.dat Individual notes (88 records)
# Star A9 --- Star name
# Note A70 --- Text of the note
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Star |Note
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BX And|The brighter component of the visual double ADS 1671. Separation
BX And|19.7". Possible presence of a third body on about a 60 year orbit
BX And|seen in the (O-C) diagram.
SS Ari|Possible quadruple system. A third body is seen in the (O-C) diagram
SS Ari|on an ~44.8 years orbit. Possible fourth component on a 28 years
SS Ari|orbit.
AP Aur|Fast period increase since the beginning of the observations (1901)
AP Aur|with mean (dP/dt)/P= +2.12*10^-6^year^-1^. The (O-C) residuals
AP Aur|deviate from the parabolic representation.
44 Boo|Fainter component of the visual double ADS 9494. The orbital period of
44 Boo|the visual pair is 206 years. TU Boo: Abrupt period decrease
44 Boo|{Delta}P/P=-1.52*10^-5^ around 1983.
TY Boo|Possible presence of a third body indicated by the sinusoidal
TY Boo|variation (P~65years) seen in the (O-C) diagram.
TZ Boo|Two abrupt period changes around 1979 ({Delta}P/P=-2.45*10^-5^) and
TZ Boo|around 1992 ({Delta}P/P=+3.27*10^-5^).
VW Boo|Secular period decrease (dP/dt)/P=-4.97*10^-7^year^-1^ since the
VW Boo|beginning of the observations (1938).
XY Boo|Fast period increase since the beginning of the observations (1944)
XY Boo|with mean (dP/dt)/P= +1.56*10^-6^year^-1^. The (O-C) residuals
XY Boo|deviate a lot from the parabolic representation.
AC Boo|Abrupt period increase {Delta}P/P=+2.32*10^-5^ around 1980.
CK Boo|Abrupt period increase {Delta}P/P=+2.0*10^-5^ around 1990.
V366 Cas|Period increase since the beginning of the observations (1911) with
V366 Cas|mean (dP/dt)/P=+5.27*10^-7^year^-1^. The (O-C) residuals deviate a
V366 Cas|lot from the parabolic representation.
V523 Cas|Presence of the third body on ~101 years seen in the (O-C) diagram.
VW Cep|The system is probably quadruple - P3=31.4 years, e3=0.771,
VW Cep|P4=18.6 years, e4=0.499.
CV Cyg|Period decrease since the beginning of the observations (1898) with
CV Cyg|mean (dP/dt)/P=-4.43*10^-7^year^-1^ or two abrupt period decreases
CV Cyg|around 1930 and 1975.
V1073 Cyg|Period decrease with mean (dP/dt)/P=-4.88*10^-7^year^-1^ since the
V1073 Cyg|first photoelectric observation (1962). Old photographic
V1073 Cyg|observations give the impression of the sinusoidal period change.
EF Dra|Third component spectroscopically detected. Possible variation in the
EF Dra|(O-C) diagram. Object discovered as an X-ray source.
UX Eri|Irregular period variation.
YY Eri|Sinusoidal variation seen in the (O-C) diagram interpreted as
YY Eri|continuous mass transfer combined with LITE or cyclic magnetic
YY Eri|activity. Abrupt period changes are another possibility.
AK Her|The brighter component of the visual double ADS10408.
AK Her|Separation 4.7". Quasi-sinusoidal period variation with two or more
AK Her|periodicities.
DF Hya|Period increase since the beginning of the observations (1935) with
DF Hya|mean (dP/dt)/P=+4.24*10^-7^year^-1^ or abrupt period increase
DF Hya|{Delta}P/P=+1.76*10^-5^ around 1965.
EZ Hya|Fast period decrease since the beginning of the photoelectric
EZ Hya|observations (1969) with mean (dP/dt)/P=-1.46*10^-6^year^-1^.
EZ Hya|The (O-C) residuals deviate from the parabolic representation.
SW Lac|Presence of two other components in the systems seen in the (O-C)
SW Lac|diagram with 23 and ~90 years orbital periods. Multiplicity of the
SW Lac|system confirmed by spectroscopic observations.
XY Leo|Multiple system. The third component on a P~20 years orbit is a
XY Leo|BY Dra binary with an orbital period 0.805 days.
AM Leo|The brighter component of the visual double ADS 8024.
AM Leo|Separation 11.3". Possible presence of a third body indicated by the
AM Leo|sinusoidal variation (P~33 years) seen in the (O-C) diagram.
V502 Oph|A third body detected spectroscopically. A continuous decreaseand a
V502 Oph|probable sinusoidal oscillation with a period of 35yr in the (O-C)
V502 Oph|diagram.
V566 Oph|Abrupt period increase (dP/dt)/P=+1.41*10^-5^ around 1972. Latest
V566 Oph|(O-C) residuals deviate from the linear representation.
V839 Oph|Orbital period seems to be modulated by more than one mechanism.
ER Ori|Member of a multiple system. The brighter component of
ER Ori|IDS05065-00840. Separation 13.6". Another component detected by
ER Ori|speckle interferometry 0.19" distant. Complicated (O-C) diagram.
BX Peg|Period decrease since the beginning of the observations (1926) with
BX Peg|mean (dP/dt)/P=-2.38*10^-7^year^-1^. Since 1986 period seems to be
BX Peg|approximately constant.
AU Ser|Abrupt period decrease {Delta}P/P=-1.49*10^-5^ around 1988.
RZ Tau|Variable period increase since the beginning of the observations
RZ Tau|(1916) with mean (dP/dt)/P=+2.37*10^-7^year^-1^.
AH Tau|Abrupt period decrease {Delta}P/P=-1.17*10^-5^ around 1974. The (O-C)
AH Tau|residuals before the change deviate from the linear representation.
EQ Tau|Possible third body (P~50 years) indicated by the course of the (O-C)
EQ Tau|residuals.
W UMa|Complicated quasi-periodic change of the period since the beginning
W UMa|of the observations (1902).
TY UMa|Period increase since the beginning of the observations (1933) with
TY UMa|mean (dP/dt)/P=+7.13*10^-7^year^-1^ or two abrupt period increases,
TY UMa|the second around 1981.
AW UMa|Variation seen in the (O-C) diagram interpreted as LITE or two abrupt
AW UMa|period decreases. The presence of a third body indicated by the
AW UMa|systemic velocity changes.
AH Vir|The brighter component of a visual double ADS 8472 with ~1280 years
AH Vir|orbit. Presence of a third body on a 11.2 years orbit seen in the
AH Vir|(O-C) diagram.
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