J/ApJ/950/L10 SNR 0509-67.5 surviving companion search (Shields+, 2023)
No surviving SN Ia companion In SNR 0509-67.5:
Stellar population characterization and comparison to models.
Shields J.V., Arunachalam P., Kerzendorf W.E., Hughes J.P., Biriouk S.,
Monk H., Buchner J.
<Astrophys. J. 950, L10 (2023)>
=2023ApJ...950L..10S 2023ApJ...950L..10S (SIMBAD/NED BibCode)
ADC_Keywords: Supernova remnants ; Photometry, HST ; Effective temperatures ;
Abundances, [Fe/H] ; Models
Keywords: Type Ia supernovae - supernova remnants - white dwarf stars -
supernovae - AB photometry - Large Magellanic Cloud
Abstract:
The community agrees that Type Ia Supernovae (SNe Ia) arise from C/O
white dwarfs undergoing thermonuclear runaway. However, the full
progenitor system and the process that prompts the white dwarf to
explode remain unknown. Most current models suggest that the white
dwarf explodes because of interaction with a binary companion which
may survive the process and remain within the resulting remnant of the
exploded star. Furthermore, the interaction and explosion of the
primary are expected to imprint a significant departure from ordinary
stellar radii and temperatures onto the secondary, making the star
identifiable against the unrelated stellar population. Identification
of a surviving companion inside an SN Ia remnant might confirm a
specific corresponding SN Ia progenitor channel based on the identity
of the companion. We conducted a surviving companion search of Type Ia
SNR 0509-67.5 based in the Large Magellanic Cloud (LMC). The
well-constrained distance to and foreground extinction of the LMC
allow for Bayesian inference of stellar parameters with low
correlation and uncertainties. We present a deep catalog of fully
characterized stars interior to SNR 0509-67.5 with radii, effective
temperatures, and metallicities inferred using combined Hubble Space
Telescope photometric observations across multiple visits. We then
compile a list of surviving companion models appropriate for the age
of the remnant (roughly 400 years after the explosion). We compare
these predictions with the inferred stellar parameters and conclude
that none of the stars are consistent with the predicted signatures of
a surviving companion.
Description:
Joined Hubble Space Telescope Photometry and inferred astrophysical
parameters for stars in SNR 0509-67.5, a SN Ia remnant in the Large
Magellanic Cloud, are presented.
Objects:
---------------------------------------------------------------
RA (2000) DE Designation(s)
---------------------------------------------------------------
05 09 30.99 -67 31 17.9 SNR 0509-67.5 = [SHP2000] LMC 47
---------------------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
hheparam.dat 223 3 Photometry and parameters for objects identified
in Arunachalam et al. (2022ApJ...938..121A 2022ApJ...938..121A),
and first identified in Hovey
(2016PhDT........21H 2016PhDT........21H), near the center of the
remnant
hscparam.dat 457 126 Photometry and parameters for objects identified
in the Hubble Source Catalog near the center
of SNR 0509-67.5, as well as the immediate
nearby surrounding stellar population (table 4)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: hheparam.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 A4 --- Name Name of star from Hovey (2016PhDT........21H 2016PhDT........21H),
HHEN
6- 11 F6.3 mag F475W ? F475W photometry
13- 17 F5.3 mag e_F475W ? Error of F475W measurement
19- 24 F6.3 mag F555W ? F555W photometry
26- 30 F5.3 mag e_F555W ? Error of F555W measurement
32- 37 F6.3 mag F814W F814W photometry
38- 42 F5.3 mag e_F814W Error of F814W measurement
44- 48 F5.2 mag F110W F110W photometry
50- 54 F5.3 mag e_F110W Error of F110W measurement
56- 60 F5.2 mag F160W F110W photometry
62- 66 F5.3 mag e_F160W Error of F160W measurement
68- 84 F17.12 K Teff Effective temperature inferred from photometry
86-103 F18.14 K e_Teff Error of effective temperature inferred
105-122 F18.16 Rsun Rad Radius inferred from photometry
124-142 F19.17 Rsun e_Rad Error of radius inferred from photometry
144-163 F20.17 [-] [Fe/H] Metallicity relative to solar inferred
from photometry
165-183 F19.17 [-] e_[Fe/H] Error of metallicity inferred from photometry
185-203 F19.17 mag AV Foreground V band extinction inferred
from photometry
205-223 F19.17 mag e_AV Error of extinction inferred from photometry
--------------------------------------------------------------------------------
Byte-by-byte Description of file: hscparam.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 I9 --- MatchID Match ID of source identified in the
Hubble Source Catalog
11- 27 F17.14 deg RAdeg Right Ascension (J2000)
29- 46 F18.14 deg DEdeg Declination (J2000)
48- 65 F18.15 mag F814W-1 F814W first photometry measurement
67- 84 F18.15 mag F814W-2 ? F814W second photometry measurement
86-103 F18.15 mag F475W ? F475W photometry
105-122 F18.15 mag F555W ? F555W photometry
124-141 F18.15 mag F110W ? F110W photometry
143-160 F18.15 mag F160W ? F160W photometry
162-181 F20.18 mag e_F814W-1 Error of first F814W measurement
183-203 F21.19 mag e_F814W-2 ? Error of second F814W measurement
205-225 F21.19 mag e_F475W ? Error of F475W measurement
227-247 F21.19 mag e_F555W ? Error of F555W measurement
249-268 F20.18 mag e_F110W ? Error of F110W measurement
270-290 F21.19 mag e_F160W ? Error of F160W measurement
292-309 F18.13 K Teff ? Effective temperature inferred
from photometry
311-329 F19.15 K e_Teff ? Error of effective temperature inferred
331-348 F18.16 Rsun Rad ? Radius inferred from photometry
350-369 F20.18 Rsun e_Rad ? Error of radius inferred from photometry
371-390 F20.17 [-] [Fe/H] ? Metallicity relative to solar inferred
from photometry
392-411 F20.18 [-] e_[Fe/H] ? Error of metallicity inferred
from photometry
413-433 F21.19 mag AV ? Foreground V band extinction inferred
from photometry
435-455 F21.19 mag e_AV ? Error of extinction inferred
from photometry
457 I1 --- NCenter [0/1] whether the object is within
4.2 arcseconds of the dynamical center
of the remnant (1=true)
--------------------------------------------------------------------------------
Acknowledgements:
Joshua V. Shields, shield90(at)msu.edu
(End) Patricia Vannier [CDS] 06-Apr-2023