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An Infrared Census of DUST in Nearby Galaxies with Spitzer (DUSTiNGS). IV. Discovery of High-Redshift AGB Analogs
M. L. Boyer, K. B. W. McQuinn, M. A. T. Groenewegen +13
The survey for DUST in Nearby Galaxies with Spitzer (DUSTiNGS) identified several candidate Asymptotic Giant Branch (AGB) stars in nearby dwarf galaxies and showed that dust can fo…
ALMA spectral survey of Supernova 1987A --- molecular inventory, chemistry, dynamics and explosive nucleosynthesis
M. Matsuura, R. Indebetouw, S. Woosley +26
We report the first molecular line survey of Supernova 1987A in the millimetre wavelength range. In the ALMA 210--300 and 340--360 GHz spectra, we detected cold (20--170 K) CO, 28S…
Discovery of Five Candidate Analogs for Carinae in Nearby Galaxies
Rubab Khan, Scott M. Adams, K. Z. Stanek +2
The late-stage evolution of very massive stars such as Carinae may be dominated by episodic mass ejections which may later lead to Type II superluminous supernova (SLSN-II; e.g…
Identification of a Class of Low-Mass Asymptotic Giant Branch Stars Struggling to Become Carbon Stars in the Magellanic Clouds
Martha L. Boyer, Iain McDonald, Sundar Srinivasan +4
We have identified a new class of Asymptotic Giant Branch (AGB) stars in the Small and Large Magellanic Clouds (SMC/LMC) using optical to infrared photometry, light curves, and opt…
Spitzer Point Source Catalogs of Stars in Seven Nearby Galaxies
Rubab Khan, C. S. Kochanek, K. Z. Stanek +1
We present Spitzer IRAC um and MIPS um point-source catalogs for seven galaxies: NGC, M, NGC, NGC, M, NGC, and NGC. The catalogs con…
Mapping High-velocity H-alpha and Lyman-alpha Emission from Supernova 1987A
Kevin France, Richard McCray, Claes Fransson +12
We present new {\it Hubble Space Telescope} images of high-velocity H- and Lyman- emission in the outer debris of SN~1987A. The H- images are dominated by emission from hy…
A stubbornly large mass of cold dust in the ejecta of Supernova 1987A
M. Matsuura, E. Dwek, M. J. Barlow +33
We present new Herschel photometric and spectroscopic observations of Supernova 1987A, carried out in 2012. Our dedicated photometric measurements provide new 70 micron data and im…
Dust Production and Particle Acceleration in Supernova 1987A Revealed with ALMA
R. Indebetouw, M. Matsuura, E. Dwek +23
Supernova (SN) explosions are crucial engines driving the evolution of galaxies by shock heating gas, increasing the metallicity, creating dust, and accelerating energetic particle…
Carbon Monoxide in the Cold Debris of Supernova 1987A
J. Kamenetzky, R. McCray, R. Indebetouw +27
We report spectroscopic and imaging observations of rotational transitions of cold CO and SiO in the ejecta of SN1987A, the first such emission detected in a supernova remnant. In…
HST-COS Observations of Hydrogen, Helium, Carbon and Nitrogen Emission from the SN 1987A Reverse Shock
Kevin France, Richard McCray, Steven V. Penton +18
We present the most sensitive ultraviolet observations of Supernova 1987A to date. Imaging spectroscopy from the Hubble Space Telescope-Cosmic Origins Spectrograph shows many narro…
Herschel Detects a Massive Dust Reservoir in Supernova 1987A
M. Matsuura, E. Dwek, M. Meixner +20
We report far-infrared and submillimeter observations of Supernova 1987A, the star that exploded on February 23, 1987 in the Large Magellanic Cloud, a galaxy located 160,000 lighty…
X-ray illumination of the ejecta of Supernova 1987A
J. Larsson, C. Fransson, G. Östlin +25
We present the late-time optical light curve of the ejecta of SN 1987A measured from HST imaging observations spanning the past 17 years. We find that the flux from the ejecta decl…
The Dust Properties of Two Hot R Coronae Borealis Stars and a Wolf-Rayet Central Star of a Planetary Nebula: in Search of a Possible Link
Geoffrey C. Clayton, O. De Marco, B. A. Whitney +14
We present new Spitzer/IRS spectra of two hot R Coronae Borealis (RCB) stars, one in the Galaxy,V348 Sgr, and one lying in the LMC, HV 2671. These two objects may constitute a link…
Mass Transport Processes and their Roles in the Formation, Structure, and Evolution of Stars and Stellar Systems
Kenneth G. Carpenter, Margarita Karovska, Carolus J. Schrijver +15
We summarize some of the compelling new scientific opportunities for understanding stars and stellar systems that can be enabled by sub-mas angular resolution, UV/Optical spectral…