Suzaku Observation : 407042010

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Fits Header

TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '407042010'          / Observation identification string
OBSERVER= 'KOJI MUKAI'         / Principal Investigator
OBJECT  = 'HEN 3-1591'         / Name of observed object
OBS_REM = '        '           / remark on observation
RA_OBJ  =             271.8834 / planned target R.A.(deg)
DEC_OBJ =             -25.8954 / planned target DEC.(deg)
RA_NOM  = 2.718863000000000E+02 / Right Ascension of target (deci. deg)
DEC_NOM = -2.589810000000000E+01 / Declination of target (deci. deg)
PA_NOM  =             269.6421 / nominal position angle from north to DETY(deg)
MEAN_EA1=     271.886251766174 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=     115.898090243175 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=     180.357903502272 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2012-10-03T17:23:56' / Start date of observations
DATE-END= '2012-10-04T18:42:20' / End date of observations
TSTART  = 4.026002507623463E+08 / time start
TSTOP   = 4.026913243670838E+08 / time stop
TELAPSE = 9.107360473757982E+04 / elapsed time
ONTIME  = 5.141162917351723E+04 / On-source time
EXPOSURE= 5.141162917351723E+04 / Exposure time
MJD-OBS = 5.620372586743456E+04 / MJD of data start time
FILIN001= 'ae407042010xi0_0_3x3n066l_cl.evt.gz' / Input file name
SEQPNUM =                    2 / Number of times this dataset processed
PROCVER = '3.0.22.44'          / Processing script version
MK1STVER= 'mk1stfits20120530'  / Version of mk1stfits used
SOFTVER = 'Hea_08Feb2016_V6.18_Suzaku_14Nov2013_V22' / Version of HEADAS used
CALDBVER= 'hxd20110913_xis20160607_xrt20110630_xrs20060410' / Version of CALDB u
FILIN002= 'ae407042010xi0_0_3x3n090l_cl.evt.gz' / Input file name
FILIN003= 'ae407042010xi0_0_5x5n066h_cl.evt.gz' / Input file name
FILIN004= 'ae407042010xi0_0_5x5n066l_cl.evt.gz' / Input file name
FILIN005= 'ae407042010xi1_0_3x3n130b_cl.evt.gz' / Input file name
FILIN006= 'ae407042010xi1_0_3x3n140b_cl.evt.gz' / Input file name
FILIN007= 'ae407042010xi1_0_5x5n130b_cl.evt.gz' / Input file name
FILIN008= 'ae407042010xi3_0_3x3n066a_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 number of symbiotic stars known to be medium energy (2-10 keV) X-ray emitters has increased markedly in the last several years. These are white dwarfs accreting from a giant mass donor, unlike the less common class of symbiotic X-ray binaries in which the accretor is a neutron star. The X-ray spectra of the white dwarf symbiotics can be used to constrain the white dwarf mass and accretion rate. Here we focus on one object, Hen 3-1591, which belongs to a rare subclass of d'-type yellow symbiotic, commonly thought to harbor a young white dwarf. Hen 3-1591 is the first of this subclass to show medium energy X-ray emission, and hence we propose a moderately deep Suzaku observation to characterize its white dwarf and the circum-binary environment.