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Table A.1.

A log of spectroscopic observations of CH Cyg.

date No. UT Exp Inst. Sp.range JD 24- phase
yymmdd sec nm
951016 1107 19:56 600 camVI 411-510 50007.334 0.449
951025 1234 19:10 600 camVI 412-511 50016.302 0.461
951120 1436 19:55 600 camVI 422-537 50042.333 0.496
951121 1465 20:09 600 camVI 411-510 50043.343 0.497
951123 1494 20:09 600 camVI 412-511 50045.343 0.500
951124 1530 20:00 600 camVI 411-510 50046.337 0.501
951210 1567 18:17 600 camVI 411-510 50062.265 0.522
951219 1586 18:46 600 camVI 411-510 50071.286 0.534
960119 1652 5:06 600 camVI 412-511 50101.716 0.574
960201 1679 5:26 300 camVI 411-510 50114.728 0.591
960208 1699 5:12 600 camVI 411-510 50121.720 0.601
960215 1744 4:38 600 camVI 411-510 50128.697 0.610
960302 1802 3:39 600 camVI 411-510 50144.656 0.631
960329 21569 3:59 300 BC600 397-510 50171.668 0.667
960606 22004 23:05 300 BC600 395-508 50241.464 0.759
960611 2033 1:47 600 camVI 411-510 50245.578 0.764
960907 22694 23:54 900 ech 433-689 50334.501 0.882
970129 23219 4:55 600 ech 451-710 50477.708 0.071
970130 23269 4:02 600 ech 451-710 50478.672 0.073
970210 23510 5:05 300 BC600 394-507 50489.714 0.087
970221 23794 3:32 360 ech 460-710 50500.649 0.102
970329 24451 3:16 600 ech 460-710 50536.640 0.149
970331 24488 3:16 600 ech 460-710 50538.640 0.152
970401 24525 1:43 600 ech 460-710 50539.575 0.153
970403 2114 3:26 600 camVI 410-509 50541.647 0.156
970514 25122 1:55 300 BC600 398-511 50582.582 0.210
970519 2147 1:05 600 camVI 411-510 50587.549 0.217
970530 25354 1:27 600 ech 460-710 50598.564 0.231
970701 25421 1:25 600 ech 460-710 50630.563 0.274
970729 2213 22:51 600 camVI 410-509 50659.456 0.312
970813 2241 23:13 600 camVI 411-510 50674.471 0.332
970919 2254 21:06 600 camVI 411-510 50711.383 0.381
970922 2268 22:00 600 camVI 411-510 50714.420 0.385
970924 2300 22:42 600 camVI 411-510 50716.449 0.387
970925 2326 21:49 600 camVI 411-510 50717.413 0.389
970926 2351 22:49 600 camVI 411-510 50718.454 0.390
971113 2370 17:54 600 camVI 411-510 50766.249 0.453
971114 2387 18:33 600 camVI 411-510 50767.276 0.455
971116 2400 19:10 600 camVI 411-510 50769.302 0.457
971120 2438 20:32 600 camVI 411-510 50773.359 0.463
971121 2442 18:12 600 camVI 411-510 50774.262 0.464
980107 2486 17:56 900 camVI 411-510 50821.253 0.526
980206 2523 5:15 300 camVI 412-511 50850.721 0.565
980510 28406 22:53 600 ech 433-689 50944.457 0.689
980614 28547 1:59 600 ech 433-689 50978.586 0.734
980709 28650 23:45 600 ech 433-689 51004.493 0.768
980809 28874 23:43 180 ech 433-689 51035.489 0.809
980810 28883 1:23 180 ech 433-689 51035.559 0.809
980812 28924 23:44 180 ech 433-689 51038.490 0.813
980821 2600 0:05 300 BC600 388-506 51046.505 0.824
980908 2694 22:18 300 BC600 382-500 51065.431 0.849
981010 2802 23:31 300 BC600 399-517 51097.482 0.891
981012 2821 20:26 120 BC600 398-515 51099.352 0.894
981015 2848 21:40 180 BC600 398-515 51102.404 0.898
981117 3245 17:43 300 BC600 395-512 51135.240 0.941
981128 30243 19:40 600 ech 433-689 51146.323 0.956
981129 3428 17:50 1200 BC1200 450-511 51147.250 0.957
981205 3452 17:42 600 BC1200 445-506 51153.241 0.965
981209 3470 19:32 600 BC600 401-519 51157.317 0.970
981213 30985 18:06 1200 ech 451-711 51161.261 0.976
981214 31008 18:54 600 ech 451-711 51162.291 0.977
981215 31033 19:02 300 ech 451-711 51163.295 0.978
990104 3572 18:14 300 BC600 396-514 51183.262 0.005
990106 3600 18:07 300 BC600 395-513 51185.257 0.007
990113 3665 17:38 600 BC1200 454-514 51192.238 0.017
990125 3876 4:39 600 BC1200 445-506 51203.697 0.032
990126 3908 5:24 300 BC600 398-515 51204.727 0.033
990130 31795 5:20 600 ech 433-689 51208.726 0.038
990203 31921 4:30 300 ech 433-689 51212.689 0.044
990213 32041 4:29 300 ech 433-689 51222.689 0.057
990217 32134 3:57 300 ech 433-689 51226.666 0.062
990226 32280 3:38 600 ech 433-689 51235.655 0.074
990308 4177 2:42 300 BC600 395-512 51245.614 0.087
990314 32455 3:00 300 ech 433-689 51251.627 0.095
990315 32475 2:47 300 ech 433-689 51252.618 0.097
990402 32694 2:33 300 ech 433-689 51270.608 0.120
990403 32725 1:44 300 ech 433-689 51271.574 0.122
990404 32750 1:44 300 ech 433-689 51272.574 0.123
990604 32895 0:33 600 ech 433-689 51333.526 0.204
990605 32913 1:37 300 ech 460-710 51334.569 0.205
990607 32924 1:23 300 ech 433-689 51336.559 0.208
990622 4458 0:59 900 BC600 400-518 51351.546 0.227
990913 4757 19:55 300 BC600 400-518 51435.332 0.338
990914 4793 22:06 600 BC600 394-512 51436.424 0.340
990921 4806 20:59 600 BC600 398-515 51443.378 0.349
990922 4815 23:44 600 BC600 400-518 51444.492 0.350
990928 33179 22:20 360 ech 433-689 51450.433 0.358
991027 4905 22:59 600 BC600 400-518 51479.461 0.397
991108 5004 21:50 300 BC600 399-516 51491.412 0.412
991128 5371 19:44 300 BC600 415-533 51511.324 0.439
991130 5423 19:36 300 BC600 406-524 51513.318 0.441
000126 34045 5:18 600 ech 433-689 51569.724 0.516
000221 34301 3:43 600 ech 433-689 51595.658 0.550
000316 34352 2:43 900 ech 433-689 51619.618 0.582
000426 34656 0:27 300 ech 433-689 51660.520 0.636
000515 34745 2:39 300 ech 433-689 51679.612 0.661
000516 34764 2:41 300 ech 433-689 51680.614 0.663
040910 17657 23:35 300 BC600 407-525 53259.484 0.751
041223 18069 17:36 600 BC600 399-517 53363.237 0.888

Notes. T0 =2446643.66, period=756.0 days. UT: Universal time at start of exposure. BC600: Boller Chivens spectrograph with a 600 groove mm−1 grating. BC1200: Boller Chivens spectrograph with a 1200 groove mm−1 grating.

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