most citedRobust 1-norm periodograms for analysis of noisy non-Gaussian time series with irregular cadences: Application to VLBI astrometry of quasars

5 citations

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5 papers

astro-ph.SR2026

HCO and the Effect of Mixing in SN 1987A

H. M. Davies, M. Matsuura, H. L. Gomez +8

We present high angular resolution observations of the HCO emission in the central ejecta of the supernova remnant SN 1987A using the Atacama Large Millimeter Array (ALMA). We…

astro-ph.GA2026

The Celestial Reference Frame at K Band: The CRF-K-2025 Catalog

David Gordon, Aletha de Witt, Christopher S. Jacobs +10

We present an updated K band (24 GHz) celestial reference frame (CRF) constructed from 3.5 million Very Long Baseline Interferometry (VLBI) observations collected during 211 observ…

astro-ph.GA2026

The Peculiar Velocity of Messier~87 from Microarcsecond Geodetic VLBI Astrometry

Valeri V. Makarov, Phil Cigan, Kyle Corcoran

Our knowledge of the space velocity of Messier 87, which is the dominant galaxy in the Virgo cluster, has been limited to the radial velocity component. Using a cadence of precisio…

astro-ph.SR2026

A SPHEREx Pipeline and Spectral Library for Ultracool Dwarfs

Jonathan Gagné, Jacqueline K. Faherty, Azul Ruiz Diaz +72

We present a Python spectrophotometry extraction tool tailored for fast-moving point sources detected in the SPHEREx mission, and use it to construct a set of 0.75-5.0 m low-re…

astro-ph.IM2026★ 5 cited

Robust 1-norm periodograms for analysis of noisy non-Gaussian time series with irregular cadences: Application to VLBI astrometry of quasars

Valeri V. Makarov, Sébastien Lambert, Phil Cigan +2

Astronomical time series often have non-uniform sampling in time, or irregular cadences, with long gaps separating clusters of observations. Some of these data sets are also explic…