WX Cet

$B!!#W#X!!#C#e#t(B          UG(SU?+E?)     9.3-18.0p
WX Cet
  1963$BG/$N(B9$B7n$+$i(B10$B7n$K$+$1$F;#$i$l$?(BBamberg $BE7J8Bf$N%W%l!<%H$+$i(BStrohmeier
$B$,H/8+$7!"MbG/#I#B#V#S$K?7@1$H$7$FH/I=$7$^$7$?!#8=:_$G$O#U#G7?$H$7$F$h$/CN(B
$B$i$l!"K?#I;a$O4QB,.$O$3$N?t;z$h$j#1Ey$[(B
$B$IL@$k$$MM$J5$$,$7$^$9!#(B

$B!VJQ8w@1!W(B1989.07
$B!!F|K\$G$O$[$H$s$I4QB,IT2DG=$G$"$C$?$?$a!J$=$l$G$b2??M$+$N?M$O@1:BAa8+$r2s(B
$B$7$F$_$?$=$&$G$"$k!K$"$^$j%K%e!<%9$K$J$i$J$+$C$?$,!"A}8w$N6K$a$F$^$l$J(BUG$B7?(B
$B$G!":rG/$NJQ8w@14QB,P$rGc$C$?(B
$B$3$H$G$bM-L>$J(BWX Cet$B$,A}8w$7$?!#(B

$B!!$3$N@1$O$b$H$b$H(B1963$BG/(B9-10$B7n$K;#$i$l$?(BBamberg$BE7J8Bf$N%W%l!<%H$+$i(BStrohmeier
$B$,?7@1$H$7$FH/8+$7!"MbG/4)9T$5$l$F4V$b$J$$(BIBVS$B$KH/I=$7$?$b$N$G$"$k!J@1?^$b(B
$BIU$$$F$$$?$,$^$C$?$/Lr$KN)$?$J$$$b$N$G$"$C$?!K!#(BGCVS$B-7$G$O(BNA$B$K$J$C$F$$$k!#(B
$B8E$$?7@1$N6K>.$NF1Dj$r$7$F$$$?(BGaposchkin$B$,JQ8wHO0O$,?7@1$K$7$F$O>.$5$$$3$H(B
$B$r8+$D$1!"2a5n$N%W%l!<%H$rD4::$7$?$H$3$m(B1938 June 9.4; 1939 Oct. 10.2; 1945
July 13.5; 1963 Sep. 10.5$B$N#42s$NA}8w$,8+$$$@$5$l$*$=$i$/(BUG$B7?$H$$$&$3$H$K(B
$B$J$C$?!J$=$l$K$7$F$b0-$$;~4|$NA}8w$,B?$$(B!$B$^$?(BSonneberg$B%W%l!<%H$K$O.;~$N%9%Z%/%H%k$O(BWZ Sge
$B$N6K>.;~$KHs>o$K;w$F$$$k!#51@~$O#2$D$KJ,Nv$7$F$*$j!"50F;79o$KBg$-$$$3$H$+$i!"H`$i$O(BUZ Boo$B$b4^$a$F(BWZ Sge$B7?$H$$$&J,N`$rDs>'(B
$B$7$F$$$?!#(BGO Com$B$N$H$3$m$G=P$?(BVogt and Bateson$B$b$=$NJ,N`$r;H$C$F$$$k!#$b$C(B
$B$H$b(BVY Aqr$B$d(BRZ Leo$B$b(BWZ Sge$B%?%$%W$K$J$C$F$$$k$N$G$"$^$jEv$F$K$J$i$J$$$,(B..

$B!!:G6a6K>.8wEY$N@V30$r4^$`B??'B,8w$,9T$o$l$?(B(Szkody and Feinswog, ApJ 334,422)
$B$,!"$=$l$K$h$k$H(BV=18.0 J=17.09 H=17.14$B$G$"$jH<@1$OA48wEY$K$O$[$H$s$I4sM?$7(B
$B$F$$$J$$$3$H$,$o$+$k!#0E$$%"%/%j!<%7%g%s%G%#%9%/$r;}$D!J!a.$5(B
$B$$!$A}8w$N$^$l$J!K(BUGSS$B7?J?>o8wEY$N(BV-J$B$NE57?E*$JCM$O(B+3$BDxEY$G$"$k!#$=$l$f$((B
$B$3$N7O$O(Bperiod gap$B0J2<$N50F;<~4|$r;}$D$H9M$($i$l$k!#!J(BV$B$O%G%#%9%/$NL@$k$5!"(B
J$B$OH<@1$NL@$k$5$r<($7$F$$$k$H9M$($l$P$o$+$j$d$9$$!K(B

$B!!A02s$NA}8w0JA0$K$O%Q%H%m!<%k$K@DB&$KL$F1Dj$N5[<}@~!&51@~$,G'$a$i(B
$B$l!"F|$N%*!<%@!<$G7c$7$/JQF0$7$F$$$?$H$N$3$H$G$"$k!#(B

$B!!$=$N8e$N8wEY4QB,$N%G!<%?$rF~eB3$$$?$N$G:#2s$N(BWX Cet$B$b(Bhigh-speed photometry$B$0$i$$$O$J$5$l$?$+$bCN$l(B
$B$J$$!#:#8e$N(Bpaper$B$,3Z$7$_$G$"$k!#$^$?(BKsm$B;a$O@2$l$l$PD+5/$-$F4QB,$9$k7h0U$K(B
$BG3$($F$$$k$H$N$3$H$G!J#I;a$h$j!KF|K\$G=i$a$F$3$N@1$NA}8w$r8+$??M$,=P8=$7$?(B
$B$+$bCN$l$J$$!#:#8e$b.>k$5$s$,4QB,!#(B

$B!VJQ8w@1!W(B1990.03
$B!!:G6aA}8w$,$"$C$FOCBj$K$J$C$?(BWX Cet$B$N!"6K>.8wEY$K$*$1$kB,8w$+$i50F;<~4|$r(B
$B5a$a$?$H$$$&O@J8$,$[$H$s$IF1;~$K#2$DH/I=$5$l$^$7$?$N$G>R2p$7$F$*$-$^$9!#(B

$B!&(BThe orbital period of the cataclysmic variable WX Ceti (van Paradijs, van
der Klis and Pedersen, AsAp 225,L5)

$B!!(B1987$BG/(B7/31-8/5$B$N(B5$BLk!"(BESO$B$N(B1.5m+CCD$B$K$h$kB,8w$r9T$C$?!#J?6Q(BV=17.5$B$G(B0.4$BEy$N(B
$BJQF0$,8+$i$l$?!#JQF0$N%?%$%`%9%1!<%k$,4QB,;~4V$h$jD9$$$h$&$J$N$G!"<~4|(B3.5-12
$B;~4V$NHO0O$rC5:w$7$?$H$3$m!"(BP=6.98$B!^(B0.04$B;~4V$G@0Ls$9$l$P$-$l$$$J%5%$%s%+!<(B
$B%V$H$J$k$3$H$,L@$i$+$K$J$C$?!#(BStellingwerf$B$NJ}K!$K$h$l$P$3$N$h$&$J<~4|@-$,(B
$B6vA3$KF@$i$l$k3NN($O(B3x10^-6$B0J2<$G$"$j!"$3$NCM$O50F;<~4|$H9M$($i$l$k!#%9%Z%/(B
$B%H%k$N51@~$,J,Nv$7$F$$$k$3$H$+$i?)$,$"$k$N$G$O$J$$$+$H$$$&?dDj$,$"$C$?$,!"(B
$BL@3N$J?)$O4QB,$5$l$J$+$C$?!#(B

$B!!(BWZ Sge$B$H$NN`;w@-$,;XE&$5$l$F$-$?$,!"$3$N<~4|$O(BWZ Sge(Porb=80min)$B$KHf$Y$F(B
$BHs>o$KD9$$!#$7$+$7A}8w$,$^$l$GJQ8wHO0O$NBg$-$$$H$$$&E@$G$OB>$K$bD9$$50F;<~(B
$B4|$r;}$DNc$,$"$k!J(BVY Aqr P=5.3hr,DO Dra P=4.0hr$B!K!#(BWZ Sge$B$H(BWX Cet$B$NN`;w@-(B
$B$O.$5$$7O$G$"$k$3$H$KM3Mh$9$k$N$G$"$m$&!#(B

$B!!50F;<~4|(B7$B;~4V$N(BRoche lobe$B$rK~$?$9.8wEY$N%9%Z%/%H%k$K$OH<@1M3Mh$NFCD'$OG'$a$i$l$J$$!#(BK0$B7?e$K$J$k!#$3$l$ODL>o$Nbd?7@1$N6KBg8wEY$N(B100$BG\0J>eL@$k$$!#(B
$B5U$K(BWX Cet$B$N6KBg@dBP8wEY$rDL>o$Nbd?7@1$N(B+4.0$B$HF1$8$H$9$k$HH<@1$N@dBP8wEY$O(B
+11$BEy$K$J$k!#$3$l$OH<@1$,(BRoche lobe$B$r$^$C$?$/K~$?$7$F$$$J$$$3$H$r0UL#$7!"(B
$B7cJQ@1$N%b%G%k$HBg$$$KL7=b$9$k!#$"$k$$$O(BV822 Cen(Cen X-4)$B$K$*$$$FDs>'$5$l(B
$B$F$$$k$h$&$KH<@1$O9bEY$K?J2=$,?J$_!"30AX$N?eAG$NBgItJ,$r$O$.uBV$K(B
$B$"$k$N$+$bCN$l$J$$(B...

$B!!$H$$$&$h$&$K5DO@$OB3$-$^$9!#$7$+$7KhHU$N%0%i%U$r8+$k$H$b$C$HC;$$<~4|$G$b(B
$B$$$$$h$&$J5$$,$9$k!)!JD9$$%?%$%`%9%1!<%k$NJQ8w$O4p@~$NJQF0$N$h$&$K$_$($k!K(B
Szkody$B$5$s$K2r@O$7$F$b$i$C$?$i(B2$B;~4V0J2<$N<~4|$,5a$^$k$N$G$O$J$$$G$7$g$&$+!)(B
$B!J<~4|C5:w$NHO0O$r$o$6$o$6(B3.5$B;~4V0J>e$K$7$F$"$k$N$OB>$K6/$$<~4|@-$,$"$C$?(B
$B$N$G$O$J$$$+$H4*$0$j$?$/$b$J$j$^$9!K!#IaDL$N(BUG$B7?$G?J2=$7$?H<@1$r;}$C$?7O$r(B
$BH/8+$7$?(B(BD Pav)$B?M$@$1$"$C$F$N5DO@$O$+$J$j(B
$B2!$7$F$$$^$9!#(BVY Aqr$B$rNc$K5s$2$F$$$^$9$,!"$h$/CN$i$l$F$$$kDL$j$3$l$O8m$j!#(B

$B!!$b$&0lJ}$O!"$+$D$FJ?>o8wEY$NB,8w$+$i(BRZ Leo,AW Gem$B$J$I$N50F;<~4|$r5a$a$?(B
Szkody$B$i$NBh#2CF$G(BSU UMa$B7?$i$7$$@1$H!"F|JQ8&$G$9$i4QB,$5$l$F$$$J$$0[>o$K(B
$B%^%$%J!<$J7cJQ@1$r4QB,$7$F$$$^$9!#@1JL$K>R2p$7$^$7$g$&!#(B

$B!VJQ8w@1!W(B1990.06
$B!&(BWX Cet$B$OM=A[DL$j(BSU UMa$B7?(B
$B!!(BIAUC 5006$B$K$h$l$P@h$NBgA}8w$K$*$$$F(Bsuperhump$B$,8!=P$5$l$?!#<~4|$O(B76$BJ,DxEY(B
$B$@$,!"4QB,;~4V$,C;$$$N$G@53N$G$O$J$$!#$3$l$O$3$l$^$G$K5a$a$i$l$?:G$bC;$$CM(B
$B$G$"$k!#$"$"$d$C$Q$j$+(B..$B$H$$$C$?$H$3$m!#@hF|$N#2$D$NJ88%$NCM$O$I$A$i$H$b0c(B
$B$&$h$&$J(B...