822 citations · 2k across the 48 of their papers we have counts for
49 papers
Serendipitous detection of the dusty Type IIL SN 1980K with JWST/MIRI
Szanna Zsíros, Tamás Szalai, Ilse De Looze +39
We present mid-infrared (mid-IR) imaging of the Type IIL supernova (SN) 1980K with the James Webb Space Telescope (JWST) more than 40 yr post-explosion. SN 1980K, located in the ne…
FORCASTing the spectroscopic dust properties of the WC+O binary WR137 with SOFIA
Megan J. Peatt, Noel D. Richardson, Peredur M. Williams +5
WR 137 (HD 192641) is a binary system consisting of a carbon-rich Wolf-Rayet star and an Oe companion star in a 13-year orbit. Near periastron, the winds of the two stars collide a…
A Luminous Red Supergiant and Dusty Long-period Variable Progenitor for SN 2023ixf
Jacob E. Jencson, Jeniveve Pearson, Emma R. Beasor +23
We analyze pre-explosion near- and mid-infrared (IR) imaging of the site of SN 2023ixf in the nearby spiral galaxy M101 and characterize the candidate progenitor star. The star dis…
From Dust to Nanodust: Resolving Circumstellar Dust from the Colliding-Wind Binary Wolf-Rayet (WR) 140
Ryan M. Lau, Jason Wang, Matthew J. Hankins +17
Wolf-Rayet (WR) 140 is the archetypal periodic dust-forming colliding-wind binary that hosts a carbon-rich WR (WC) star and an O-star companion with an orbital period of 7.93 years…
JWST Discovery of Dust Reservoirs in Nearby Type IIP Supernovae 2004et and 2017eaw
Melissa Shahbandeh, Arkaprabha Sarangi, Tea Temim +36
Supernova (SN) explosions have been sought for decades as a possible source of dust in the Universe, providing the seeds of galaxies, stars, and planetary systems. SN 1987A offers…
Recurring outbursts of the supernova impostor AT 2016blu in NGC 4559
Mojgan Aghakhanloo, Nathan Smith, Peter Milne +8
We present the first photometric analysis of the supernova (SN) impostor AT 2016blu in NGC 4559. This transient was discovered by the Lick Observatory Supernova Search in 2012 and…
Radiation-driven acceleration in the expanding WR140 dust shell
Yinuo Han, Peter G. Tuthill, Ryan M. Lau +1
The Wolf-Rayet (WR) binary system WR140 is a close (0.9-16.7 mas) binary star consisting of an O5 primary and WC7 companion and is known as the archetype of episodic dust-producing…
Nested Dust Shells around the Wolf-Rayet Binary WR 140 observed with JWST
Ryan M. Lau, Matthew J. Hankins, Yinuo Han +29
Massive colliding-wind binaries that host a Wolf-Rayet (WR) star present a potentially important source of dust and chemical enrichment in the interstellar medium (ISM). However, t…
SRGA J181414.6-225604: A new Galactic symbiotic X-ray binary outburst triggered by an intense mass loss episode of a heavily obscured Mira variable
Kishalay De, Ilya Mereminskiy, Roberto Soria +24
We present the discovery and multi-wavelength characterization of SRGA J181414.6-225604, a Galactic hard X-ray transient discovered during the ongoing SRG/ART-XC sky survey. Using…
Detection of a broad 8 m UIR feature in the mid-infrared spectrum of WR 125 observed with Subaru/COMICS
Izumi Endo, Ryan M. Lau, Itsuki Sakon +3
We present the detection of a broad 8 m feature in newly formed dust around the carbon-rich Wolf-Rayet (WC) binary WR 125 from N-band low-resolution (NL; R250) spectroscop…
A massive AGB donor in Scutum X-1: Identification of the first Mira variable in an X-ray binary
Kishalay De, Deepto Chakrabarty, Roberto Soria +9
The symbiotic X-ray binary Sct X-1 was suggested as the first known neutron star accreting from a red supergiant companion. Although known for nearly 50 years, detailed characteriz…
Second Timescale Photometry of the Very Fast Nova V1674 Her with Palomar Gattini-IR
Kylie Y. Hansen, Kishalay De, Michael C. B. Ashley +15
We report second-timescale infrared photometry of the nova V1674 Her using Palomar Gattini-IR. These observations constitute the first infrared and highest temporal resolution data…
PGIR 20eid (SN2020qmp): A Type IIP Supernova at 15.6 Mpc discovered by the Palomar Gattini-IR survey
G. P. Srinivasaragavan, I. Sfaradi, J. Jencson +19
We present a detailed analysis of SN 2020qmp, a nearby type IIP core-collapse supernova (CCSN), discovered by the Palomar Gattini-IR (PGIR) survey in the galaxy UGC07125. We illust…
Discovery of a 310-day Period from the Enshrouded Massive System NaSt1 (WR 122)
Ryan M. Lau, Samaporn Tinyanont, Matthew J. Hankins +15
We present optical and infrared (IR) light curves of NaSt1, also known as Wolf-Rayet (WR) 122, with observations from Palomar Gattini-IR (PGIR), the Zwicky Transient Facility (ZTF)…
Outbursting Young Stellar Object PGIR 20dci in the Perseus Arm
Lynne A. Hillenbrand, Kishalay De, Matthew Hankins +9
We report the discovery of a likely outbursting Class I young stellar object, associated with the star-forming region NGC 281-W (distance kpc). The source is currently s…
AT 2019qyl in NGC 300: Internal Collisions in the Early Outflow from a Very Fast Nova in a Symbiotic Binary
Jacob E. Jencson, Jennifer E. Andrews, Howard E. Bond +39
Nova eruptions, thermonuclear explosions on the surfaces of white dwarfs (WDs), are now recognized to be among the most common shock-powered astrophysical transients. We present th…
The luminous red nova AT 2018bwo in NGC 45 and its binary yellow supergiant progenitor
Nadejda Blagorodnova, Jakub Klencki, Ondrej Pejcha +12
Luminous Red Novae (LRNe) are astrophysical transients associated with the partial ejection of a binary system's common envelope (CE) shortly before its merger. Here we present the…
A population of heavily reddened, optically missed novae from Palomar Gattini-IR: Constraints on the Galactic nova rate
Kishalay De, Mansi M. Kasliwal, Matthew J. Hankins +25
The nova rate in the Milky Way remains largely uncertain, despite its vital importance in constraining models of Galactic chemical evolution as well as understanding progenitor cha…
Census of R Coronae Borealis stars I: Infrared light curves from Palomar Gattini IR
Viraj R. Karambelkar, Mansi M. Kasliwal, Patrick Tisserand +16
We are undertaking the first systematic infrared (IR) census of R Coronae Borealis (RCB) stars in the Milky Way, beginning with IR light curves from the Palomar Gattini IR (PGIR) s…
Revealing Efficient Dust-Formation at Low Metallicity in Extragalactic Carbon-Rich Wolf-Rayet Binaries
Ryan M. Lau, Matthew J. Hankins, Mansi M. Kasliwal +6
We present Spitzer/IRAC observations of dust formation from six extragalactic carbon-rich Wolf-Rayet (WC) binary candidates in low-metallicity (Z Z) environm…
The extreme colliding-wind system Apep: resolved imagery of the central binary and dust plume in the infrared
Y. Han, P. G. Tuthill, R. M. Lau +6
The recent discovery of a spectacular dust plume in the system 2XMM J160050.7-514245 (referred to as "Apep") suggested a physical origin in a colliding-wind binary by way of the "P…
Resolving Decades of Periodic Spirals from the Wolf-Rayet Dust Factory WR 112
Ryan M. Lau, Matthew J. Hankins, Yinuo Han +9
WR 112 is a dust-forming carbon-rich Wolf-Rayet (WC) binary with a dusty circumstellar nebula that exhibits a complex asymmetric morphology, which traces the orbital motion and dus…
Revisiting the Impact of Dust Production from Carbon-Rich Wolf-Rayet Binaries
Ryan M. Lau, J. J. Eldridge, Matthew J. Hankins +3
We present a dust spectral energy distribution (SED) and binary stellar population analysis revisiting the dust production rates (DPRs) in the winds of carbon-rich Wolf-Rayet (WC)…
From SN2010da to NGC 300 ULX-1: Ten Years of Observations of an Unusual High Mass X-ray Binary in NGC 300
Breanna A. Binder, Stefania Carpano, Marianne Heida +1
In 2010 May, an intermediate luminosity optical transient was discovered in the nearby galaxy NGC 300 by a South African amateur astronomer. In the decade since its discovery, mult…