/ftp/cats/J_A+AS/136/515



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J/A+AS/136/515      DQ Cephei amplitude variations          (Li+ 1999)
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	table4.dat
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Query from: http://vizier.u-strasbg.fr/cgi-bin/VizieR?-source=J/A+AS/136/515
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drwxr-xr-x 26 cats archive 4096 Jan 29 2012 [Up] drwxr-xr-x 2 cats archive 4096 Dec 15 2013 [TAR file] -rw-r--r-- 1 cats archive 460 May 14 1999 .message -r--r--r-- 1 cats archive 2679 May 7 1999 ReadMe -rw-r--r-- 1 cats archive 213 Sep 19 2007 +footg5.gif -rw-r--r-- 1 cats archive 2047 Mar 5 2008 +footg8.gif -r--r--r-- 1 cats archive 2365 Nov 6 1998 table4.dat.gz [txt] [txt.gz] [fits] [fits.gz] [html]
Beginning of ReadMe : J/A+AS/136/515 DQ Cephei amplitude variations (Li+ 1999) ================================================================================ Multi-period pulsation and amplitude variations behavior in delta Scuti variable DQ Cephei Li Z.P., Fang M.J. <Astron. Astrophys. Suppl. Ser. 136, 515 (1999)> =1999A&AS..136..515L (SIMBAD/NED BibCode) ================================================================================ ADC_Keywords: Stars, variable ; Magnitudes Keywords: stars: delta Scuti - oscillations - individual: DQ Cephei Abstract: A period analysis of the data obtained in six nights of differential photoelectric photometry of the delta Scuti star DQ Cephei (about 42 hours) confirms the pulsation modes of f_1_=8.0480 cycle per day and f_2_=12.6826 cycle per day. The result adjusts well to the observations that cover a time span of 46 years. Comparing with the results obtained for different years, we discovered obvious amplitude variations of the two modes. These amplitude variations show phase differences of almost 180 degrees. The variation period probably is longer than 46 years. Objects: ---------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------- 20 57 48.4 +55 29 14 DQ Cep = HD 199908 20 58 27.1 +55 39 00 SAO 33038 = HD 200017 ----------------------------------------------------------

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