SIMPLE = T / file does conform to FITS standard BITPIX = 16 / number of bits per data pixel NAXIS = 0 / number of data axes EXTEND = T / FITS dataset may contain extensions COMMENT FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H HDUNAME = 'PRIMARY ' / ASCDM block name LONGSTRN= 'OGIP 1.0' / The HEASARC Long String Convention may be used.COMMENT This FITS file may contain long string keyword values that are COMMENT continued over multiple keywords. The HEASARC convention uses the & COMMENT character at the end of each substring which is then continued COMMENT on the next keyword which has the name CONTINUE. ORIGIN = 'ASC ' / Source of FITS file CREATOR = 'mkarf v0.6.2-0' / Program creating this file MJD_OBS = 5.5276339069838E+04 / Modified Julian date of observation DS_IDENT= 'ADS/Sa.CXO#obs/12123' / dataset identifier CHECKSUM= 'YkUDajUDSjUDYjUD' / HDU checksum updated 2012-01-17T18:08:44 DATASUM = ' ' / data unit checksum updated 2012-01-17T18:08:38 DATE = '2012-01-17T18:08:44' / Date and time of file creation DATE-OBS= '2010-03-21T08:08:15' / Observation start date DATE-END= '2010-03-21T15:38:56' / Observation end date TIMESYS = 'TT ' / Time system MJDREF = 5.0814000000000E+04 / MJD zero point for times TIMEZERO= 0.0000000000000E+00 / Clock correction TIMEUNIT= 's ' / Time unit CLOCKAPP= T / default DETNAM = 'ACIS-3 ' / ACIS-I3 FILTER = ' ' GRATING = 'NONE ' CYCLE = 'P ' / events from which exps? Prim/Second/Both SIM_X = -7.8090834371673E-01 / [mm] SIM offset SIM_Y = 0.0000000000000E+00 / [mm] SIM offset SIM_Z = -2.3358743446083E+02 / [mm] SIM offset TSTART = 3.8554609563400E+08 / Observation start time TSTOP = 3.8557313616038E+08 / Observation end time MISSION = 'AXAF ' / Mission TELESCOP= 'CHANDRA ' / Telescope Used INSTRUME= 'ACIS ' / Instrument OBS_ID = '12123 ' / Observation id SEQ_NUM = '900936 ' / Sequence number END XTENSION= 'BINTABLE' / binary table extension BITPIX = 8 / 8-bit bytes NAXIS = 2 / 2-dimensional binary table NAXIS1 = 12 / width of table in bytes NAXIS2 = 1070 / number of rows in table PCOUNT = 0 / size of special data area GCOUNT = 1 / one data group (required keyword) TFIELDS = 3 / number of fields in each row EXTNAME = 'SPECRESP' / Imaging ARF HDUNAME = 'SPECRESP' / ASCDM block name CONTENT = 'SPECRESP' HDUVERS = '1.1.0 ' HDUCLASS= 'OGIP ' HDUCLAS1= 'RESPONSE' HDUCLAS2= 'SPECRESP' HDUVERS1= '1.0.0 ' / Obsolete Keyword HDUVERS2= '1.1.0 ' / Obsolete Keyword ARFVERSN= '1992a ' / Obsolete Keyword TTYPE1 = 'ENERG_LO' / Energy TFORM1 = '1E ' / format of field TUNIT1 = 'keV ' TLMIN1 = 0.0000000E+00 TLMAX1 = 2.0000000E+01 TTYPE2 = 'ENERG_HI' / Effective Area TFORM2 = '1E ' / format of field TUNIT2 = 'keV ' TLMIN2 = 0.0000000E+00 TLMAX2 = 2.0000000E+01 TTYPE3 = 'SPECRESP' / Effective Area TFORM3 = '1E ' / format of field TUNIT3 = 'cm**2 ' LONGSTRN= 'OGIP 1.0' / The HEASARC Long String Convention may be used.COMMENT This FITS file may contain long string keyword values that are COMMENT continued over multiple keywords. The HEASARC convention uses the & COMMENT character at the end of each substring which is then continued COMMENT on the next keyword which has the name CONTINUE. ORIGIN = 'ASC ' / Source of FITS file CREATOR = 'mkarf v0.6.2-0' / Program creating this file ASCDSVER= 'CIAO 4.3' / ASCDS version number MJD_OBS = 5.5276339069838E+04 / Modified Julian date of observation DS_IDENT= 'ADS/Sa.CXO#obs/12123' / dataset identifier REVISION= 1 / Processing version of data CHECKSUM= 'DTDXDRCUDRCUDRCU' / HDU checksum updated 2012-01-17T18:08:44 DATASUM = '1032624123' / data unit checksum updated 2012-01-17T18:08:44 RAND_SKY= 5.0000000000000E-01 RAND_PI = 1.0000000000000E+00 EQUINOX = 2.0000000000000E+03 / default DATE = '2012-01-17T18:08:44' / Date and time of file creation DATE-OBS= '2010-03-21T08:08:15' / Observation start date OBS_MODE= 'POINTING' / Observation mode DATE-END= '2010-03-21T15:38:56' / Observation end date TIMESYS = 'TT ' / Time system MJDREF = 5.0814000000000E+04 / MJD zero point for times TIMEZERO= 0.0000000000000E+00 / Clock correction TIMEUNIT= 's ' / Time unit BTIMNULL= 3.8221123490225E+08 / Basic Time offset (s) DATACLAS= 'OBSERVED' / default BTIMRATE= 2.5625001301453E-01 / Basic Time clock rate (s / VCDUcount) BTIMDRFT= -1.3791247721594E-18 / Basic Time clock drift (s / VCDUcount^2) FILTER = 'NONE ' / QE includes all filters RESPFILE= '0.3:11.0:0.01' / RMF File ASPFILE = '../../acisf12123/products/aux/asphist_3.fits.gz' / Aspect Histogram FBTIMCORR= 0.0000000000000E+00 / Correction applied to Basic Time rate (s) TIMEREF = 'LOCAL ' / Time reference (barycenter/local) TASSIGN = 'SATELLITE' / Time assigned by clock CLOCKAPP= T / default SIM_X = -7.8090834371673E-01 / [mm] SIM offset SIM_Y = 0.0000000000000E+00 / [mm] SIM offset SIM_Z = -2.3358743446083E+02 / [mm] SIM offset FOC_LEN = 1.0070000000000E+04 / HRMA focal length (mm) TIERRELA= 1.0000000000000E-09 / default TIERABSO= 5.0000000000000E-05 / default TIMVERSN= 'ASC-FITS-2' / Timing system definition TSTART = 3.8554609563400E+08 / Observation start time GRATING = 'NONE ' / Grating DETNAM = 'ACIS-3 ' / ACIS-I3 RA_PNT = 5.3119928440600E+01 / Pointing RA DEC_PNT = -2.7814458473255E+01 / Pointing Dec ROLL_PNT= 2.5220865103645E+02 / Pointing Roll RA_TARG = 5.3120000000000E+01 / Observer's specified target RA DEC_TARG= -2.7806389000000E+01 / Observer's specified target Dec DEFOCUS = 1.4398718632593E-03 / SIM defocus (mm) RA_NOM = 5.3119928440600E+01 / Nominal RA DEC_NOM = -2.7814458473255E+01 / Nominal Dec ROLL_NOM= 2.5220865103645E+02 / Nominal Roll TSTOP = 3.8557313616038E+08 / Observation end time STARTOBT= 0.0000000000000E+00 / On-Board MET close to STARTMJF and STARTMNF TIMEPIXR= 5.0000000000000E-01 / default TIMEDEL = 3.1410400000000E+00 / timedel Lev1 (in seconds) CTI_CORR= T CTI_APP = 'PPPPPBPBPP' MISSION = 'AXAF ' / Mission TELESCOP= 'CHANDRA ' / Telescope Used INSTRUME= 'ACIS ' / Instrument FRACEXPO= 9.2837346429836E-01 / Effective fractional exposure READMODE= 'TIMED ' / Read mode DATAMODE= 'VFAINT ' / Data mode FLSHTIME= 0.0000000000000E+00 / Inferred duration of each flush. (s) CYCLE = 'P ' / events from which exps? Prim/Second/Both TITLE = 'The Chandra Deep Field-South Survey: An Ultradeep Chandra Legacy' / POBSERVER= 'Dr. Harvey Tananbaum' / Principal investigator OBJECT = 'Chandra Deep Field-South' / Source name OBS_ID = '12123 ' / Observation id SEQ_NUM = '900936 ' / Sequence number ONTIME = 2.5118040862978E+04 / [s] Sum of GTIs ONTIME3 = 2.5118040862978E+04 / [s] Sum of GTIs LIVETIME= 2.4789855167470E+04 / [s] Livetime LIVTIME3= 2.4789855167470E+04 / [s] Livetime EXPOSURE= 2.4789680339068E+04 / [secs] Total exposure time EXPOSUR3= 2.4789855167470E+04 / [s] Exposure time DTCOR = 9.8693426381071E-01 / Dead time correction ASPTYPE = 'KALMAN ' FP_TEMP = 1.5344601440000E+02 / [K] Focal Plane Temperature RADESYS = 'ICRS ' / default HISTORY ----------------------------------------------------------------- HISTORY MKARF Processing History HISTORY ----------------------------------------------------------------- HISTORY Startup Directory: /xassist/data/pipeline4/chandra/12123/acisf12123/prodHISTORY ucts HISTORY Cmd Line: mkarf @@/tmp/tmpNYPPSB.par mode=hl HISTORY Parameter file used: /tmp/tmpNYPPSB.par HISTORY Detector Mask File: ../../acisf12123/data/aux/acisf12123_000N001_msk1.fiHISTORY ts.gz HISTORY Source SKY position: (3800.18,4422.85) HISTORY ---------------------------------------------------------------------- HISTORY ARDLIB History Records HISTORY ---------------------------------------------------------------------- HISTORY ARDLIB Version: 0.8.5 HISTORY File used for CALDB info: ../../acisf12123/products/events/fullrun_ccd3_HISTORY acisf12123_pi14-548_pass1_cl_src5_src.evt.gz HISTORY Parameter file: /opt/ciao-4.3/param/ardlib.par HISTORY ACIS QE File: /opt/ciao-4.3/CALDB/data/chandra/acis/qe/acisD1997-04-17qeHISTORY N0006.fits[4] HISTORY ACIS Uniformity File: /opt/ciao-4.3/CALDB/data/chandra/acis/qeu/acisD200HISTORY 0-01-29qeuN0006.fits[4] HISTORY ACIS Contamination File: /opt/ciao-4.3/CALDB/data/chandra/acis/contam/acHISTORY isD1999-08-13contamN0006.fits[4] HISTORY ACIS 3 Badpix File: /opt/ciao-4.3/CALDB/data/chandra/acis/badpix/acisD20HISTORY 00-11-28badpixN0003.fits[4] HISTORY Vignetting File: /opt/ciao-4.3/CALDB/data/chandra/default/vignet/hrmaD19HISTORY 96-12-20vignetN0003.fits[1] HISTNUM = 22 HISTORY Onaxis Area File: /opt/ciao-4.3/CALDB/data/chandra/default/axeffa/hrmaD1HISTORY 996-12-20axeffaN0008.fits[1] HISTORY ---------------------------------------------------------------------- HISTORY ---------------------------------------------------------------------- HISTORY PIXLIB History Records HISTORY ---------------------------------------------------------------------- HISTORY PIXLIB Version: 4.0.0 HISTORY ****** PIXLIB Parameter File ***** HISTORY /opt/ciao-4.3/param/geom.par: HISTORY instruments = /opt/ciao-4.3/CALDB/data/chandra/default/geom/telD1999-07HISTORY -23geomN0006.fits(CALDB) HISTORY aimpoints = /opt/ciao-4.3/CALDB/data/chandra/default/aimpts/telD1999-HISTORY 07-23aimptsN0002.fits(CALDB) HISTORY tdet = /opt/ciao-4.3/CALDB/data/chandra/default/tdet/telD1999-07HISTORY -23tdetN0001.fits(CALDB) HISTORY sky = /opt/ciao-4.3/CALDB/data/chandra/default/sky/telD1999-07-HISTORY 23skyN0002.fits(CALDB) HISTORY shell = /opt/ciao-4.3/CALDB/data/chandra/default/sgeom/telD1999-0HISTORY 7-23sgeomN0001.fits(CALDB) HISTORY obsfile = nowT00:00:00() HISTORY ****** PIXLIB System Configuration ****** HISTORY Telescope = AXAF HISTORY Focal Length (mm) = 10070.000 HISTORY Detector = ACIS HISTORY Focal Plane Sys. = FP-1.1 HISTORY Tiled Detector Plane Sys. = ACIS-2.2 HISTORY SIM Offset (mm) = (0.684 0.75 236.552) HISTORY Aim Point(NONE) (mm) = (-0.780908 0 -233.587) HISTORY Grating Arm = HEG HISTORY Grating Order = 1 HISTORY Dispersion Plane Sys. = ASC-GDP-1.1 HISTORY Rowland Circle (mm) = 8632.48 HISTORY ---------------------------------------------------------------------- HISTORY TOOL :mkarf 2012-01-17T18:08:44 ASC00001HISTORY PARM :asphistfile=../../acisf12123/products/aux/asphist_3.fitsASC00002HISTORY CONT :.gz ASC00003HISTORY PARM :outfile=../../acisf12123/products/spectra/fullrun_ccd3_aASC00004HISTORY CONT :cisf12123_pi14-548_pass1_cl_src5.arf ASC00005HISTORY PARM :sourcepixelx=3800.1812246 ASC00006HISTORY PARM :sourcepixely=4422.8512246 ASC00007HISTORY PARM :engrid=0.3:11.0:0.01 ASC00008HISTORY PARM :obsfile=../../acisf12123/products/events/fullrun_ccd3_acASC00009HISTORY CONT :isf12123_pi14-548_pass1_cl_src5_src.evt.gz ASC00010HISTORY PARM :pbkfile=../../acisf12123/data/aux/acisf385546926N001_pbkASC00011HISTORY CONT :0.fits.gz ASC00012HISTORY PARM :dafile=CALDB ASC00013HISTORY PARM :mirror=HRMA ASC00014HISTORY PARM :detsubsys=ACIS-I3 ASC00015HISTORY PARM :grating=NONE ASC00016HISTORY PARM :maskfile=../../acisf12123/data/aux/acisf12123_000N001_msASC00017HISTORY CONT :k1.fits.gz ASC00018HISTORY PARM :ardlibparfile=ardlib.par ASC00019HISTORY PARM :geompar=geom ASC00020HISTORY PARM :verbose=0 ASC00021HISTORY PARM :clobber=yes ASC00022END >>RR> =n> >>+x>>{>^e>{>33> >33>Q?-n>>Q>p?lZN>p>\?px>\>Ǯ?x>Ǯ>@0N>>@>> =@[> =>(@S>(>G@?>G>ff@W:>ff>A >>A7>>A\A.>>HAV>H?A20??\AN?\?A??A?? =qA? =q? AZ)? ?\)Aai?\)?Abe??zA?z? =A1? =?A??(AVZ?(?RB3?R?!GB_H?!G?# B*{C@>{@>RC6c@>R@?\)C@?\)@@C$@@@@C@@@AGC@AG@AC @A@B\Cp@B\@C33Cт@C33@C C8@C @DzC@Dz@EC2@E@EC!C@E@FffCy@Fff@G =C@G =@GC6@G@HQC~%@HQ@HCg@H@IC@I@J=qCW@J=q@JHCx@JH@KCM@K@L(C@L(@LC@L@MpC@Mp@N{C@N{@NRC@NR@O\)Ci@O\)@PC@P@PC(@P@QGC@QG@QC@Q@R\C}@R\@S33C@S33@S C-=@S @TzCbN@Tz@UCB@U@UC@U@VffCq@Vff@W =C@W =@WCV@W@XQC^@XQ@XC@X@YC+@Y@Z=qClK@Z=q@ZHC@ZH@[C@[@\(C+R@\(@\CG@\@]pCq@]p@^{C@^{@^RCx@^R@_\)C"@_\)@`C_@`@`C@`@aGCt@aG@aC@a@b\C>@b\@c33Cj@c33@c C@c @dzC@dz@eC@e@eCm@e@fffC@ @fff@g =Cj@g =@gC@g@hQC|@hQ@hCh@h@iC@i@j=qC6@j=q@jHCTG@jH@kCn$@k@l(C@l(@lC@l@mpCG@mp@n{C3@n{@nRC @nR@o\)C@o\)@pC@p@pC(@p@qGC:J@qG@qCK@q@r\C_@r\@s33Ct@s33@s C@s @tzCO@tz@uC@u@uCz@u@vffC@vff@w =C@w =@wC@w@xQC8@xQ@xC@x@yCz@y@z=qC@z=q@zHC @zH@{Ca@{@|(C4@|(@|CV@|@}pCw@}p@~{C@~{@~RC@~R@\)Cز@\)@C@@QC@Q@C/@@COY@@GC6W@G@CN@@C "@@=qC@=q@\C@\@HC6@H@33C@33@CҢ@@ Cǀ@ @(C?@(@zC@z@C@@Cx@@pCf@p@CT@@{C@@{@ffC,@ff@RC@R@ =Cg@ =@\)C@\)@C@@CZ@@QC@Q@Cx@@C^@@GC9@G@C@@C@@=qC@=q@\C@\@HCd@H@33Ci@33@C;<@@ C@ @(C:@(@zC@z@C}L@@CNN@@pC@p@C@@{C@{@ffC@ff@RCJ@R@ =C B@ =@\)C@\)@C@@Ch@@@QC2@Q@C@@C@@GC@G@CN@@C _@@=qC_@=q@\Cj_@\@HC#@H@33C=@33@C@@ CD@ @(C@(@zC@z@CcB@@Ch@@pC @p@CI@@{C@{@ffC@ff@RCh0@R@ =C @ =@\)C)@\)@C\*@@C9@@QC@Q@COv@@CW@@GC@G@C?@@C@@=qCpC@=q@\C@\@HC@H@33C\>@33@C@@ C1@ @(Cw@(@zC@z@Ca@@C@@pC@p@C @@{Co@{@ffC!b@ff@RC@R@ =C8@ =@\)CB@\)@CH@@C=@@QCN@Q@C @@CMB@@GCC@G@CQd@@Cф@@=qCO@=q@\C@\@HCF@H@33C@33@C=E@@ Cl@ @(CA@(@zC @z@C@@@C@@pC-r@p@C @@{C@{@ffC@ff@RC @R@ =C@ =@\)C@\)@C`@@C@@QC:@Q@C@@C@@GC@G@C@@C`@@=qC\@=q@\C> @\@HC+@H@33C{@33@C@@ C&@ @(CV@(@zC@z@CK@@C{@@pC@p@CX@@{Cʀ@{@ffC=@ff@RCG@R@ =C @ =@\)Cp @\)@CA@@CV@@QC@Q@C~A @@C}@@GC{e@G@Czc@@Cy?@@=qCx @=q@\CwzI@\@HCv\@H@33Cu>`@33@Ct"Q@@ Cs@ @(Cq @(@zCp}@z@CoX@@Cn@@pCm@p@Cl@@{Ck:@{@ffCj@ff@RCi@@R@ =Ch@ =@\)Cg@\)@Cf9@@Ce@@QCdD@Q@Cc=@@Cb@@GCa@G@C`@@C_{<@@=qC^X@=q@\C]@\@HC\}@H@33C[v@33@CZv@@ CY{'@ @(CX@(@zCW@z@CV@@CU@@pCT@p@CTq@@{CR_@{@ffCQ@ff@RCP@R@ =CO1@ =@\)CN @\)@CM6@@CL@@QCK*@Q@CJ&@@CI@@GCH˅@G@CG@@CF@@=qCE6@=q@\CDT@\@HCC'@H@33CB@33@ÅCA@Å@ C@&@ @(C@ @(@zC>@z@C=@@C<@@pC<@p@C;K@@{C: 5@{@ffC8@ff@ƸRC8@ƸR@ =C7@ =@\)C60@\)@ǮC5%@Ǯ@C4e@@QC3 @Q@ȣC2v@ȣ@C0@@GC0"@G@əC/%@ə@C.V@@=qC-@=q@ʏ\C,@ʏ\@HC+@H@33C* @33@˅C)@˅@ C(A@ @(C&@(@zC%$@z@C$@@C#@@pC#p@p@C"@@{C! ?@{@ffCm@ff@θRC@θR@ =C@ =@\)C`@\)@ϮCk@Ϯ@C^@@QC@Q@УC @У@C@@GC@G@љCf@љ@C@@=qC'@=q@ҏ\C@ҏ\@HC|@H@33Co@33@ӅCig@Ӆ@ Ci@ @(C j@(@zC c@z@C \@@C [@@pC c@p@Ck@@{C\@{@ffCNj@ff@ָRCIm@ָR@ =CM@ =@\)CS$@\)@׮CM@׮@CI*@@QCI~@Q@أB @أ@B@@GBh@G@ٙB@ٙ@Bz@@=qB"@=q@ڏ\B@ڏ\@HBp@H@33BΞ@33@ۅBg@ۅ@ B@ @(B@(@zB @z@B@@B+|@@pBV@p@B߁@@{Bݬ@{@ffB4@ff@޸RB @޸R@ =BF@ =@\)Bփk@\)@߮Bˏ@߮@B@@QBJ@Q@Bl@@B͏3@@GBO@G@ᙚB@ᙚ@Bb?@@=qBƴq@=q@\B@\@HBS@H@33B)@33@B@@ BBV@ @(B@(@zB@z@B;^@@B@@pB/@p@B@@{B@{@ffBP@ff@RBL@R@ =Bf@ =@\)B@\)@B|@@B@@QBv@Q@B@@Bb@@GB n@G@陚B}@陚@B@@=qB@=q@\B)@\@HB,@H@33BL@33@B@@ Bg@ @(B@(@zB/@z@BH@@B@@pBe@p@B@@{B@{@ffBj@ff@RBm@R@ =B#d@ =@\)B@\)@B@@B<@@QB@Q@B@@B@@GB~l@G@BG@@B0=@@=qB~o@=q@\B|{@\@HBy@H@33Bv@33@Bt@@ Brfl@ @(BpF@(@zBn@z@Bk@@Bi@@pBg@p@Be@@{Bch@{@ffBa7@ff@RB_y@R@ =B]@ =@\)B[@\)@BY@@BX@@QBV=@Q@BTU@@BRo@@GBPu@G@BN|@@BL@@=qBKr@=q@\BIYz@\@HBG@H@33BEn@33@BD4@@ BBrQ@ @(B@@@(@zB?+ @z@B=W@@B<k@@pB:C@p@B8z@@{B7|@{@ffB5@ff@RB4@R@ =B3(Z@ =@\)B1Q@\)@B0G*@AB.[AA(B-fA(AQB,AQAzB*ˀAzAB)}AAB(0AAB&AAB%3AAGB$9AGApB#y#ApAB";AAB!XAABAA{BA{A=qBA=qAffBmAffA\B^A\ARBXARAHBTLAHA =BRaA =A33BQ$A33A\)BH%A\)AB7AAB( AA B1A AB:AA(BDA(AQBLAQAzBVfAzABwTAAB AAB AAB AAGB `AGApB ApAB AAB4/AABZ$AA{BA{A=qBA=qAffBAffA\BSA\ARB ARAHB1AHA =BiA =A33B+A33A\)AA\)AA*AAA(AA A nA AAAA(A+A(AQAAQAzA#AzAACAAA1AAAMAA AQA A GAA GA pA~A pA A5A A AgA A AA A {AA {A =qA:A =qA ffAA ffA \AA \A RA*A RA HAA HA =AanA =A 33AvA 33A \)AېA \)A A"A A AشA A AY^A A AoA A (AԠA (A QAA\ARAOARAHAlAHA =Ao~A =A33A3DA33A\)AA\)AAAAAAA A.A AAWAA(AA(AQAtAQAzA]A"HA# =@A# =A#33@jA#33A#\)@A#\)A#@aA#A#@_A#A# @LA# A$@A$A$(@A$(A$Q@A$QA$z@RA$zA$@tA$A$@A$A$@A$A%@}+A%A%G@wA4A%GA%p@pbA%pA%@jwA%A%@d+A%A%@]swA%A&{@VA&{A&=q@QA&=qA&ff@LA&ffA&\@GA&\A&R@BMWA&RA&H@=:A&HA' =@7A' =A'33@2GA'33A'\)@,*A'\)A'@'A'A'@"L+A'A' @xA' A(@A(A((@XA-A-?8ôA-A.{?3vA.{A.=q?.TA.=qA.ff?)+A.ffA.\?$/A.\A.R? BA.RA.H?'A.HA/ =?FA/ =A/33?>A/33A/\)?A/\)A/? A/A/?\A/A/ ?\CA/ A0>