Suzaku Observation : 804050010

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Fits Header

TELESCOP= 'SUZAKU  '           / Telescope (mission) name
OBS_ID  = '804050010'          / Observation identification string
OBSERVER= 'RENATO A DUPKE'     / Principal Investigator
OBJECT  = 'NGC6482 '           / Name of observed object
OBS_REM = '        '           / remark on observation
RA_OBJ  =             267.9542 / planned target R.A.(deg)
DEC_OBJ =              23.0719 / planned target DEC.(deg)
RA_NOM  = 2.679570000000000E+02 / Right Ascension of target (deci. deg)
DEC_NOM = 2.308600000000000E+01 / Declination of target (deci. deg)
PA_NOM  =             109.6205 / nominal position angle from north to DETY(deg)
MEAN_EA1=     267.956978928111 / mean of the 1st ZYZ-Euler angle (deg)
MEAN_EA2=      66.914025518680 / mean of the 2nd ZYZ-Euler angle (deg)
MEAN_EA3=     340.379548308183 / mean of the 3rd ZYZ-Euler angle (deg)
DATE-OBS= '2010-02-11T06:21:01' / Start date of observations
DATE-END= '2010-02-12T07:00:24' / End date of observations
TSTART  = 3.191845000000000E+08 / time start
TSTOP   = 3.192728270000000E+08 / time stop
TELAPSE = 8.832700000000000E+04 / elapsed time
ONTIME  = 4.654669772785902E+04 / On-source time
EXPOSURE= 4.654669772785902E+04 / Exposure time
MJD-OBS = 5.523826578916667E+04 / MJD of data start time
FILIN001= 'ae804050010xi0_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= 'ae804050010xi0_0_5x5n066l_cl.evt.gz' / Input file name
FILIN003= 'ae804050010xi1_0_3x3n069b_cl.evt.gz' / Input file name
FILIN004= 'ae804050010xi1_0_5x5n069b_cl.evt.gz' / Input file name
FILIN005= 'ae804050010xi3_0_3x3n066a_cl.evt.gz' / Input file name
FILIN006= 'ae804050010xi3_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:

Fossil groups present a puzzle to current theories of structure formation. Despite the low number of bright galaxies, their high velocity dispersions and gas temperatures indicate potential wells deeper than that of normal groups. Their measured c200 are high indicating very early formation epochs, which is in contradiction with the lack of cooling cores observed. We can constrain their ages by looking at the distribution of the SN Ia and II ejecta near their core. If they are formed more recently than normal groups by galaxy merging near the core, the central gas should have a reduction of SN Ia dominance, differently from what is observed in normal groups. We propose to test this with the most optimal and nearest fossil group, NGC6482, matching very well the capabilities of Suzaku.