PROBING CENTRAL DENSITY OF TYPE IA SUPERNOVA PROGENITOR IN SINGLE DEGENERATE SYSTEM BY AN OBSERVATION OF 3C 397
Yield of Fe-peak elements (Cr, Mn, Fe, Ni) and Ti in Type Ia supernovae is the critical information for understanding their explosion mechanism. Especially in single degenerate systems where the progenitor mass is near the Chandrasekhar mass limit, mass ratios among Fe-peak elements and Ti are greatly sensitive to the central density of the progenitor. Here we propose a XRISM observation of 3C 397, a remnant of single degenerate Type Ia supernova. Utilizing the extremely high energy resolution of Resolve, we put strong constraint of {Cr,Mn,Ni}/Fe and Ti/Fe. We will observationally probe the central density of the progenitor for the first time.
TELESCOP= 'XRISM ' / Mission name INSTRUME= 'RESOLVE ' / Instrument name FILTER = 'FE55 ' / Filter name used OBS_ID = '300013020' / Observation identification string OBJECT = '3C397 ' / Object name OBSERVER= 'XRISM Collaboration' / PI name OBS_MODE= 'POINTING' / POINTING or SLEW or ALL RA_OBJ = 286.912 / [deg] Object Right ascension DEC_OBJ = 7.1293 / [deg] Object Declination RA_PNT = 286.907119145519 / Pointing RA DEC_PNT = 7.13019816084347 / Pointing DEC RA_NOM = 286.911212513189 / [deg] Nominal aspect point R.A. DEC_NOM = 7.12974088753406 / [deg] Nominal aspect point Dec. PA_NOM = 103.001029372341 / [deg] Nominal aspect point roll. TELAPSE = 349925.662620991 / Elapsed time DATE-OBS= '2024-03-31T02:52:50.234375' / Start date DATE-END= '2024-04-04T04:04:55.896996' / Stop date ONTIME = 9098.3063022 / On-source time EXPOSURE= 9098.3063022 / Exposure time PROCVER = '03.00.013.009' / Processing script version MKFFF = 'ISAS/JAXA' / Origin of First FITS file ORIGIN = 'GSFC/NASA' / Origin of Processed FITS file SOFTVER = 'Hea_21Aug2024_V6.34_XRISM_21Aug2024_V001' / Version of HEADAS used CALDBVER= 'gen20240315_xtd20240815_rsl20240815' / Version of CALDB used DATE = '2024-09-26T13:56:10' / Date and time this file was created or updated SIB2_VER= / SIB2 version JAXA