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A JWST Survey of the Supernova Remnant Cassiopeia A
Dan Milisavljevic, Tea Temim, Ilse De Looze +43
We present initial results from a JWST survey of the youngest Galactic core-collapse supernova remnant Cassiopeia A (Cas A), made up of NIRCam and MIRI imaging mosaics that map emi…
HST Proper Motion Measurements of Supernova Remnant N132D: Center of Expansion and Age
John Banovetz, Dan Milisavljevic, Niharika Sravan +8
We present proper motion measurements of oxygen-rich ejecta of the LMC supernova remnant N132D using two epochs of Hubble Space Telescope Advanced Camera for Surveys data spanning…
Supernova Remnants in M83 as Observed with MUSE
Knox S. Long, William P. Blair, P. Frank Winkler +4
Here we describe a new study of the SNRs and SNR candidates in nearby face-on spiral galaxy M83, based primarily on MUSE integral field spectroscopy. Our revised catalog of SNR can…
Locating the CSM Emission within the Type Ia Supernova Remnant N103B
Benson T. Guest, William P. Blair, Kazimierz J. Borkowski +9
We present results from deep Chandra observations of the young Type Ia supernova remnant (SNR) 0509-68.7, also known as N103B, located in the Large Magellanic cloud (LMC). The remn…
An Updated Distance to the Cygnus Loop based on Gaia Early DR3
Robert A. Fesen, Kathryn E. Weil, Ignacio Cisneros +2
We present a revised distance to the Cygnus Loop supernova remnant of pc based on Gaia Early Data Release 3 parallax measurements (EDR3) for several stars previously fou…
The Masses of Supernova Remnant Progenitors in NGC 6946
Brad Koplitz, Jared Johnson, Benjamin F. Williams +5
We constrained the progenitor masses for 169 supernova remnants, 8 historically observed supernovae, and the black hole formation candidate in NGC 6946, finding that they are consi…
The Center of Expansion and Age of the Oxygen-rich Supernova Remnant 1E 0102.2-7219
John Banovetz, Dan Milisavljevic, Niharika Sravan +8
We present new proper motion measurements of optically emitting oxygen-rich knots of supernova remnant 1E 0102.2-7219 (E0102), which are used to estimate the remnant's center of ex…
A New Microquasar Candidate in M83
Roberto Soria, William P. Blair, Knox S. Long +2
Microquasars are neutron star or black hole X-ray binaries with jets. These jets can create shock-ionized bubbles of hot plasma that can masquerade as peculiar supernova remnants (…
Achieving Transformative Understanding of Extreme Stellar Explosions with ELT-enabled Late-time Spectroscopy
D. Milisavljevic, R. Margutti, R. Chornock +35
Supernovae are among the most powerful and influential explosions in the universe. They are also ideal multi-messenger laboratories to study extreme astrophysics. However, many fun…
A New, Deep JVLA Radio Survey of M33
Richard L. White, Knox S. Long, Robert H. Becker +3
We have performed new 1.4 GHz and 5 GHz observations of the Local Group galaxy M33 with the Jansky Very Large Array. Our survey has a limiting sensitivity of 20 uJy (4-sigma) and a…
The Cygnus Loop's Distance, Properties, and Environment Driven Morphology
Robert A. Fesen, Kathryn E. Weil, Ignacio A. Cisneros +2
The Cygnus Loop is among the brightest and best studied evolved Galactic supernova remnants. However, its distance has remained uncertain thus undermining quantitative understandin…
The Expansion of the Young Supernova Remnant 0509-68.7 (N103B)
Brian J. Williams, William P. Blair, Kazimierz J. Borkowski +9
We present a second epoch of {\it Chandra} observations of the Type Ia LMC SNR 0509-68.7 (N103B) obtained in 2017. When combined with the earlier observations from 1999, we have a…
Supernova Remnants in M33: X-ray Properties as Observed by XMM-Newton
Kristen Garofali, Benjamin F. Williams, Paul P. Plucinsky +8
We have carried out a study of the X-ray properties of the supernova remnant (SNR) population in M33 with XMM-Newton, comprising deep observations of 8 fields in M33 covering all o…
SXP214, an X-ray Pulsar in the Small Magellanic Cloud, Crossing the Circumstellar Disk of the Companion
JaeSub Hong, Vallia Antoniou, Andreas Zezas +12
Located in the Small Magellanic Cloud (SMC), SXP214 is an X-ray pulsar in a high mass X-ray binary system with a Be-star companion. A recent survey of the SMC under a Chandra X-ray…
The slim-disk state of the ultraluminous X-ray source in M83
Roberto Soria, K. D. Kuntz, Knox S. Long +3
The transient ULX in M83 that went into outburst in or shortly before 2010 is still active. Our new XMM-Newton spectra show that it has a curved spectrum typical of the upper end o…
Spitzer Observations of the Type Ia Supernova Remnant N103B: Kepler's Older Cousin?
Brian J. Williams, Kazimierz J. Borkowski, Stephen P. Reynolds +7
We report results from Spitzer observations of SNR 0509-68.7, also known as N103B, a young Type Ia supernova remnant in the Large Magellanic Cloud that shows interaction with a den…
The First Reported Infrared Emission from the SN 1006 Remnant
P. Frank Winkler, Brian J. Williams, William P. Blair +5
We report results of infrared imaging and spectroscopic observations of the SN 1006 remnant, carried out with the Spitzer Space Telescope. The 24 micron image from MIPS clearly sho…
Recovery of the Historical SN1957D in X-rays with Chandra
Knox S. Long, William P. Blair, L. E. H. Godfrey +6
SN1957D, located in one of the spiral arms of M83, is one of the small number of extragalactic supernovae that has remained detectable at radio and optical wavelengths during the d…
The Birth of an Ultra-Luminous X-ray Source in M83
Roberto Soria, K. D. Kuntz, P. Frank Winkler +4
A previously undetected X-ray source (L_X<10**36 erg/s) in the strongly star-forming galaxy M83 entered an ultraluminous state between August 2009 and December 2010. It was first s…
The Chandra ACIS Survey of M33 (ChASeM33): The final source catalog
R. Tuellmann, T. J. Gaetz, P. P. Plucinsky +16
This study presents the final source catalog of the Chandra ACIS Survey of M33 (ChASeM33). With a total exposure time of 1.4 Ms, ChASeM33 covers ~70% of the D25 isophote (R\approx4…
Resolved shock structure of the Balmer-dominated filaments in Tycho's supernova remnant: Cosmic-ray precursor?
Jae-Joon Lee, John C. Raymond, Sangwook Park +4
We report on the results from Hα imaging observations of the eastern limb of Tycho's supernova remnant (SN1572) using the Wide Field Planetary Camera 2 on the Hubble Space Telescop…
Chandra ACIS Survey of M33 (ChASeM33): The enigmatic X-ray emission from IC131
R. Tuellmann, K. S. Long, T. G. Pannuti +9
We present the first X-ray analysis of the diffuse hot ionized gas and the point sources in IC131, after NGC604 the second most X-ray luminous giant HII region in M33. The X-ray em…