Suzaku Observation : 405035010

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Fits Header

TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '405035010'          / Observation identification string
OBSERVER= 'KOJI MUKAI'         / Principal Investigator
OBJECT  = '4 DRA   '           / Name of observed object
OBS_REM = '        '           / remark on observation
RA_OBJ  =             187.5278 / planned target R.A.(deg)
DEC_OBJ =              69.2011 / planned target DEC.(deg)
RA_NOM  = 1.874841000000000E+02 / Right Ascension of target (deci. deg)
DEC_NOM = 6.919380000000000E+01 / Declination of target (deci. deg)
PA_NOM  =             339.9969 / nominal position angle from north to DETY(deg)
MEAN_EA1=     187.484058870766 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=      20.806208337022 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=     110.003124020138 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2010-04-18T21:23:35' / Start date of observations
DATE-END= '2010-04-19T20:32:15' / End date of observations
TSTART  = 3.249416712133387E+08 / time start
TSTOP   = 3.250243192101218E+08 / time stop
TELAPSE = 8.264799678301811E+04 / elapsed time
ONTIME  = 4.226815524923801E+04 / On-source time
EXPOSURE= 4.226815524923801E+04 / Exposure time
MJD-OBS = 5.530489971524697E+04 / MJD of data start time
FILIN001= 'ae405035010xi0_0_3x3n066l_cl.evt.gz' / Input file name
SEQPNUM =                    2 / Number of times this dataset processed
PROCVER = '3.0.22.43'          / Processing script version
MK1STVER= 'mk1stfits20120530'  / Version of mk1stfits used
SOFTVER = 'Hea_08Feb2016_V6.18_Suzaku_14Nov2013_V22' / Version of HEADAS used
CALDBVER= 'hxd20110913_xis20151005_xrt20110630_xrs20060410' / Version of CALDB u
FILIN002= 'ae405035010xi0_0_5x5n066l_cl.evt.gz' / Input file name
FILIN003= 'ae405035010xi1_0_3x3n069b_cl.evt.gz' / Input file name
FILIN004= 'ae405035010xi1_0_5x5n069b_cl.evt.gz' / Input file name
FILIN005= 'ae405035010xi3_0_3x3n066a_cl.evt.gz' / Input file name
FILIN006= 'ae405035010xi3_0_5x5n066a_cl.evt.gz' / Input file name
COMMENT -------------------------
COMMENT BITPIX compressed from 32 to 8.
COMMENT Pixel values greater than 255 was set to 255.
COMMENT This file was made for JUDO-Suzaku.
COMMENT -------------------------
COMMENT   FITS (Flexible Image Transport System) format is defined in 'Astronomy

Abstract:

The symbiotic star, 4 Dra, has been poorly studied in X-rays. Based on the ROSAT data, we argue that it is a nearby, lower accretion rate analogue of the hard X-ray bright symibiotic stars that have been detected above 10 keV. We propose the first pointed observation of 4 Dra that covers the entire 0.4-10 keV band to test our interpretation: we expect it to be bright above 2 keV, with an optically thin thermal spectrum, likely with a strong and complex intrinsic absorber. If confirmed, 4 Dra may turn out to be a key object in the study of hard X-ray emitting symbiotic stars.