Search Results - "Laher, Russ R."
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General relativistic orbital decay in a seven-minute-orbital-period eclipsing binary system
Published in Nature (London) (25-07-2019)“…General relativity 1 predicts that short-orbital-period binaries emit considerable amounts of gravitational radiation. The upcoming Laser Interferometer Space…”
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2
SN2019dge: A Helium-rich Ultra-stripped Envelope Supernova
Published in The Astrophysical journal (01-09-2020)“…We present observations of ZTF18abfcmjw (SN2019dge), a helium-rich supernova with a fast-evolving light curve indicating an extremely low ejecta mass ( 0.33 M…”
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3
The Outer Halo of the Milky Way as Probed by RR Lyr Variables from the Palomar Transient Facility
Published in The Astrophysical journal (10-11-2017)“…Abstract RR Lyrae stars are ideal massless tracers that can be used to study the total mass and dark matter content of the outer halo of the Milky Way (MW)…”
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4
Census of the Local Universe (CLU) Narrowband Survey. I. Galaxy Catalogs from Preliminary Fields
Published in The Astrophysical journal (20-07-2019)“…We present the Census of the Local Universe (CLU) narrowband survey to search for emission-line (H ) galaxies. CLU-H has imaged 3π of the sky (26,470 deg2)…”
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5
A Distance Measurement to M33 Using Optical Photometry of Mira Variables
Published in The Astronomical journal (01-04-2023)“…Abstract We present a systematic analysis to determine and improve the pulsation periods of 1637 known long-period Mira variables in M33 using gri -band light…”
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6
The IPAC Image Subtraction and Discovery Pipeline for the Intermediate Palomar Transient Factory
Published in Publications of the Astronomical Society of the Pacific (01-01-2017)“…We describe the near real-time transient-source discovery engine for the intermediate Palomar Transient Factory (iPTF), currently in operations at the Infrared…”
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7
Variability of Red Supergiants in M31 from the Palomar Transient Factory
Published in The Astrophysical journal (20-05-2018)“…Most massive stars end their lives as red supergiants (RSGs), a short-lived evolutionary phase when they are known to pulsate with varying amplitudes. The RSG…”
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Zwicky Transient Facility and Globular Clusters: The Period–Luminosity and Period–Wesenheit Relations for SX Phoenicis Variables in the gri Band
Published in The Astronomical journal (01-05-2023)“…Abstract SX Phoenicis (SXP) variables are short-period pulsating stars that exhibit a period–luminosity (PL) relation. We derived the gri -band PL and…”
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9
An Optical Search for New Outbursting Low Mass X-Ray Binaries
Published in The Astrophysical journal (01-02-2024)“…Abstract Transient low-mass X-ray binaries (LMXBs) are discovered largely by X-ray and gamma-ray all-sky monitors. The X-ray outburst is also accompanied by an…”
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10
Panic at the ISCO: Time-varying Double-peaked Broad Lines from Evolving Accretion Disks Are Common among Optically Variable AGNs
Published in The Astrophysical journal (01-02-2024)“…Abstract About 3%–10% of Type I active galactic nuclei (AGNs) have double-peaked broad Balmer lines in their optical spectra originating from the motion of gas…”
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11
IPAC Image Processing and Data Archiving for the Palomar Transient Factory
Published in Publications of the Astronomical Society of the Pacific (01-07-2014)“…The Palomar Transient Factory (PTF) is a multiepochal robotic survey of the northern sky that acquires data for the scientific study of transient and variable…”
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12
Volumetric Rates of Luminous Red Novae and Intermediate-luminosity Red Transients with the Zwicky Transient Facility
Published in The Astrophysical journal (01-05-2023)“…Abstract Luminous red novae (LRNe) are transients characterized by low luminosities and expansion velocities, and they are associated with mergers or…”
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13
The Zwicky Transient Facility Bright Transient Survey. III. BTSbot: Automated Identification and Follow-up of Bright Transients with Deep Learning
Published in The Astrophysical journal (01-09-2024)“…Abstract The Bright Transient Survey (BTS) aims to obtain a classification spectrum for all bright ( m peak ≤ 18.5 mag) extragalactic transients found in the…”
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14
SRGeJ045359.9+622444: A 55 Minute Period Eclipsing AM Canum Venaticorum Star Discovered from a Joint SRG/eROSITA + ZTF Search
Published in The Astrophysical journal (01-09-2023)“…Abstract AM Canum Venaticorum (AM CVn) systems are ultracompact binaries where a white dwarf accretes from a helium-rich degenerate or semidegenerate donor…”
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15
Probing the Low-mass End of Core-collapse Supernovae Using a Sample of Strongly-stripped Calcium-rich Type IIb Supernovae from the Zwicky Transient Facility
Published in The Astrophysical journal (01-12-2023)“…Abstract The fate of stars in the zero-age main-sequence (ZAMS) range ≈8–12 M ⊙ is unclear. They could evolve to form white dwarfs or explode as…”
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16
Spectroscopic Follow-up on Potential Magnetic Cataclysmic Variables
Published in The Astronomical journal (01-05-2024)“…Abstract Spectroscopic observations of nine cataclysmic variables that have been postulated to contain magnetic white dwarfs were obtained to further…”
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17
tdescore: An Accurate Photometric Classifier for Tidal Disruption Events
Published in Astrophysical journal. Letters (01-04-2024)“…Abstract Optical surveys have become increasingly adept at identifying candidate tidal disruption events (TDEs) in large numbers, but classifying these…”
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A Search for Relativistic Ejecta in a Sample of ZTF Broad-lined Type Ic Supernovae
Published in The Astrophysical journal (01-08-2023)“…Abstract The dividing line between gamma-ray bursts (GRBs) and ordinary stripped-envelope core-collapse supernovae (SNe) is yet to be fully understood…”
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KPF Confirms a Polar Orbit for KELT-18 b
Published in The Astronomical journal (01-11-2024)“…Abstract We present the first spectroscopic transit results from the newly commissioned Keck Planet Finder on the Keck-I telescope at W. M. Keck Observatory…”
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The HD 191939 Exoplanet System is Well Aligned and Flat
Published in The Astronomical journal (01-11-2024)“…Abstract We report the sky-projected spin–orbit angle λ for HD 191939 b, the innermost planet in a six-planet system, using Keck/KPF to detect the…”
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