131 citations · 1.4k across the 58 of their papers we have counts for
59 papers
SPIRITS 19q: Dust Production by a Subsolar-metallicity Carbon-rich Wolf-Rayet Star in NGC 2403
Sam Rose, Ryan M. Lau, Jacob E. Jencson +20
We present JWST/NIRSpec IFU observations of SPIRITS 19q, the highly dust-producing carbon-rich (WC) binary candidate located in a subsolar-metallicity region of the nearby spiral g…
Revealing the accelerating wind in the inner region of the colliding-wind binary WR 112
John D. Monnier, Yinuo Han, Michael F. Corcoran +17
Colliding winds in massive binaries generate X-ray-bright shocks, synchrotron radio emission, and sometimes even dusty "pinwheel" spirals. We report the first X-ray detections of t…
Constraining properties of dust formed in Wolf-Rayet binary WR 112 using mid-infrared and millimeter observations
Donglin Wu, Yinuo Han, Peredur M. Williams +9
Binaries that host a carbon-rich Wolf-Rayet (WC) star and an OB-type companion can be copious dust producers. Yet the properties of dust, particularly the grain size distribution,…
A spectral library and census of near-infrared stellar large-amplitude variables from Palomar Gattini-IR
Nicholas Earley, Viraj Karambelkar, Mansi Kasliwal +9
We present a near-infrared census of stellar large-amplitude variables (LAVs) observed by the Palomar Gattini-IR (PGIR) surveyor from 2019-2021. Over the three-year time period, PG…
The Sagittarius C Complex in the Mid-Infrared with SOFIA/FORCAST
Roy J. Zhao, Mark R. Morris, Matthew J. Hankins +2
We present an analysis of high-resolution mid-infrared observations at 25 and 37 of the Sagittarius C Complex (Sgr C) in the Central Molecular Zone (CMZ), based on data from t…
JWST interferometric imaging reveals the dusty disk obscuring the supermassive black hole of the Circinus galaxy
Enrique Lopez-Rodriguez, Joel Sanchez-Bermudez, Omaira Gonzalez-Martin +6
The dusty and molecular torus is one of the most elusive structures surrounding supermassive black holes, yet its importance is unequivocal for understanding feedback and accretion…
Carbon-rich dust injected into the interstellar medium by Galactic WC binaries survives for hundreds of years
Noel D. Richardson, Micaela Henson, Emma P. Lieb +23
Some carbon-rich Wolf-Rayet stars (WC stars) show an infrared excess from dust emission. Dust forms in the collision of the WC wind with a companion star's wind. As this dust is ca…
Revealing a main-sequence star that consumed a planet with JWST
Ryan M. Lau, Jacob E. Jencson, Colette Salyk +8
The subluminous red nova (SLRN) ZTF SLRN-2020 is the most compelling direct detection of a planet being consumed by its host star, a scenario known as a planetary engulfment event.…
Dynamic Imprints of Colliding-wind Dust Formation from WR140
Emma P. Lieb, Ryan M. Lau, Jennifer L. Hoffman +24
Carbon-rich Wolf-Rayet binaries are a prominent source of carbonaceous dust that contribute to the dust budget of galaxies. The "textbook" example of an episodic dust producing WR…
Possible anti-correlations between pulsation amplitudes and the disk growth of Be stars in giant-outbursting Be X-ray binaries
Masafumi Niwano, Michael M. Fausnaugh, Ryan M. Lau +15
The mechanism of X-ray outbursts in Be X-ray binaries remains a mystery, and understanding their circumstellar disks is crucial for a solution of the mass-transfer problem. In part…
Investigating the Electron Capture Supernova Candidate AT 2019abn with JWST Spectroscopy
Sam Rose, Ryan M. Lau, Jacob E. Jencson +5
The James Webb Space Telescope (JWST) has opened up a new window to study highly reddened explosive transients. We present results from late-time (1421 days post-explosion) JWST fo…
An infrared census of R Coronae Borealis Stars II -- Spectroscopic classifications and implications for the rate of low-mass white dwarf mergers
Viraj R. Karambelkar, Mansi M. Kasliwal, Patrick Tisserand +18
We present results from a systematic infrared (IR) census of R Coronae Borealis (RCB) stars in the Milky Way, using data from the Palomar Gattini IR (PGIR) survey. R Coronae Boreal…
SOFIA/FORCAST Galactic Center Source Catalog
Angela S. Cotera, Matthew J. Hankins, John Bally +12
The central regions of the Milky Way constitute a unique laboratory for a wide swath of astrophysical studies, consequently the inner 400 pc has been the target of numerous l…
An Automated Catalog of Long Period Variables using Infrared Lightcurves from Palomar Gattini-IR
Aswin Suresh, Viraj Karambelkar, Mansi M. Kasliwal +8
Stars in the Asymptotic Giant Branch (AGB) phase, dominated by low to intermediate-mass stars in the late stage of evolution, undergo periodic pulsations, with periods of several h…
SOFIA/HAWC+ Far-Infrared Polarimetric Large Area CMZ Exploration (FIREPLACE) II: Detection of a Magnetized Dust Ring in the Galactic Center
Natalie O. Butterfield, Jordan A. Guerra, David T. Chuss +7
We present the detection of a magnetized dust ring (M0.8-0.2) in the Central Molecular Zone (CMZ) of the Galactic Center. The results presented in this paper utilize the first data…
A First Look with JWST Aperture Masking Interferometry (AMI): Resolving Circumstellar Dust around the Wolf-Rayet Binary WR 137 beyond the Rayleigh Limit
Ryan M. Lau, Matthew J. Hankins, Joel Sanchez-Bermudez +20
We present infrared aperture masking interferometry (AMI) observations of newly formed dust from the colliding winds of the massive binary system Wolf-Rayet (WR) 137 with JWST usin…
The JWST Galactic Center Survey -- A White Paper
Rainer Schoedel, Steve Longmore, Jonny Henshaw +111
The inner hundred parsecs of the Milky Way hosts the nearest supermassive black hole, largest reservoir of dense gas, greatest stellar density, hundreds of massive main and post ma…
Modeling the Multiwavelength Evolution of the V960 Mon System
Adolfo S. Carvalho, Lynne A. Hillenbrand, Franz-Josef Hambsch +7
We study the evolution of the FU Ori object V960 Mon since its outburst, using available multi-wavelength photometric time series over 8 years, complemented by several epochs of mo…
SOFIA/HAWC+ Far-InfraRed Polarimetric Large Area CMZ Exploration (FIREPLACE) Survey I: General Results from the Pilot Program
Natalie O. Butterfield, David T. Chuss, Jordan A. Guerra +9
We present the first data release (DR1) of the Far-Infrared Polarimetric Large Area CMZ Exploration (FIREPLACE) survey. The survey was taken using the 214-micron band of the HAWC+…
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…
A survey for variable young stars with small telescopes: VI -- Analysis of the outbursting Be stars NSW284, Gaia19eyy, and VES263
Dirk Froebrich, Lynne A. Hillenbrand, Carys Herbert +44
This paper is one in a series reporting results from small telescope observations of variable young stars. Here, we study the repeating outbursts of three likely Be stars based on…
A Systematic Study of Ia-CSM Supernovae from the ZTF Bright Transient Survey
Yashvi Sharma, Jesper Sollerman, Christoffer Fremling +35
Among the supernovae (SNe) that show strong interaction with the circumstellar medium, there is a rare subclass of Type Ia supernovae, SNe Ia-CSM, that show strong narrow hydrogen…
A search for relativistic ejecta in a sample of ZTF broad-lined Type Ic supernovae
Alessandra Corsi, Anna Y. Q. Ho, S. Bradley Cenko +23
The dividing line between gamma-ray bursts (GRBs) and ordinary stripped-envelope core-collapse supernovae (SNe) is yet to be fully understood. Observationally mapping the variety o…
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…