Search Results - "Shappee, Benjamin J."
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THE MASS-LOSS-INDUCED ECCENTRIC KOZAI MECHANISM: A NEW CHANNEL FOR THE PRODUCTION OF CLOSE COMPACT OBJECT-STELLAR BINARIES
Published in The Astrophysical journal (20-03-2013)“…Over a broad range of initial inclinations and eccentricities, an appreciable fraction of hierarchical triple star systems with similar masses are essentially…”
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Rapid eccentricity oscillations and the mergers of compact objects in hierarchical triples
Published in Monthly notices of the Royal Astronomical Society (21-03-2014)“…Kozai-Lidov (KL) oscillations can accelerate compact object mergers via gravitational wave radiation by driving the inner binaries of hierarchical triples to…”
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A Swift Fix for Nuclear Outbursts
Published in The Astrophysical journal (01-04-2021)“…Abstract In November 2020, the Swift team announced an update to the UltraViolet and Optical Telescope calibration to correct for the loss of sensitivity over…”
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Discovery and Early Evolution of ASASSN-19bt, the First TDE Detected by TESS
Published in The Astrophysical journal (01-10-2019)“…We present the discovery and early evolution of ASASSN-19bt, a tidal disruption event (TDE) discovered by the All-Sky Automated Survey for Supernovae (ASAS-SN)…”
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The Dynamic, Chimeric Inner Disk of PDS 70
Published in The Astrophysical journal (01-05-2024)“…Abstract Transition disks, with inner regions depleted in dust and gas, could represent later stages of protoplanetary disk evolution when newly formed planets…”
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Searching for Bumps in the Cosmological Road: Do Type Ia Supernovae with Early Excesses Have Biased Hubble Residuals?
Published in The Astrophysical journal (01-10-2024)“…Abstract Flux excesses in the early-time light curves of Type Ia supernovae (SNe Ia) are predicted by multiple theoretical models and have been observed in a…”
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An Episode of Occultation Events in Gaia21bcv
Published in The Astronomical journal (01-02-2024)“…Abstract A previously unremarkable star near the Canis Major OB1/R1 association underwent an episode of multiple deep brightness minima. Light curves based on…”
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The Curious Case of ASASSN-20hx: A Slowly Evolving, UV- and X-Ray-Luminous, Ambiguous Nuclear Transient
Published in The Astrophysical journal (01-05-2022)“…Abstract We present observations of ASASSN-20hx, a nearby ambiguous nuclear transient (ANT) discovered in NGC 6297 by the All-Sky Automated Survey for…”
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The Largest M Dwarf Flares from ASAS-SN
Published in The Astrophysical journal (10-05-2019)“…The All-sky Automated Survey for Supernovae (ASAS-SN) is the only project in existence to scan the entire sky in optical light approximately every day,…”
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Chandra, HST/STIS, NICER, Swift, and TESS Detail the Flare Evolution of the Repeating Nuclear Transient ASASSN -14ko
Published in The Astrophysical journal (01-07-2023)“…Abstract ASASSN-14ko is a nuclear transient at the center of the AGN ESO 253−G003 that undergoes periodic flares. Optical flares were first observed in 2014 by…”
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The Far Side of the Galactic Bar/Bulge Revealed through Semi-regular Variables
Published in The Astronomical journal (01-12-2023)“…Abstract The Galactic bulge is critical to our understanding of the Milky Way. However, due to the lack of reliable stellar distances, the structure and…”
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Investigating the Nature of the Luminous Ambiguous Nuclear Transient ASASSN-17jz
Published in The Astrophysical journal (01-07-2022)“…Abstract We present observations of the extremely luminous but ambiguous nuclear transient (ANT) ASASSN-17jz, spanning roughly 1200 days of the object’s…”
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Evaluating the Consistency of Cosmological Distances Using Supernova Siblings in the Near-infrared
Published in The Astrophysical journal (01-04-2024)“…Abstract The study of supernova (SN) siblings, supernovae with the same host galaxy, is an important avenue for understanding and measuring the properties of…”
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Extrapolation of Type Ia Supernova Spectra into the Near-infrared Using Principal Component Analysis
Published in The Astrophysical journal (01-05-2024)“…Abstract We present a method of extrapolating the spectroscopic behavior of Type Ia supernovae (SNe Ia) in the near-infrared (NIR) wavelength regime up to 2.30…”
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The Changing-look Blazar B2 1420+32
Published in The Astrophysical journal (01-06-2021)“…Abstract Blazars are active galactic nuclei with their relativistic jets pointing toward the observer, comprising two major subclasses, flat-spectrum radio…”
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Blast from the past: constraining progenitor models of SN 1972E
Published in Monthly notices of the Royal Astronomical Society (01-12-2021)“…ABSTRACT We present a novel technique to study Type Ia supernovae (SNe Ia) by constraining surviving companions of historical extragalactic SN by combining…”
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The Architecture of the GW Ori Young Triple-star System and Its Disk: Dynamical Masses, Mutual Inclinations, and Recurrent Eclipses
Published in The Astrophysical journal (20-12-2017)“…We present spatially and spectrally resolved Atacama Large Millimeter/submillimeter Array (ALMA) observations of gas and dust orbiting the pre-main-sequence…”
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A New Cepheid Distance to the Giant Spiral M101 Based on Image Subtraction of Hubble Space Telescope/Advanced Camera for Surveys Observations
Published in The Astrophysical journal (01-06-2011)“…We accurately determine a new Cepheid distance to M101 (NGC 5457) using archival Hubble Space Telescope (HST)/Advanced Camera for Surveys V and I time series…”
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1ES 1927+654: An AGN Caught Changing Look on a Timescale of Months
Published in The Astrophysical journal (20-09-2019)“…We study the sudden optical and ultraviolet (UV) brightening of 1ES 1927+654, which until now was known as a narrow-line active galactic nucleus (AGN). 1ES…”
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Exploring metallicity-dependent rates of Type Ia supernovae and their impact on galaxy formation
Published in Monthly notices of the Royal Astronomical Society (07-09-2022)“…ABSTRACT Type Ia supernovae are critical for feedback and elemental enrichment in galaxies. Recent surveys like the All-Sky Automated Survey for Supernova…”
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