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  1. 21

    Broad-line Region Characterization in Dozens of Active Galactic Nuclei Using Small-aperture Telescopes by Catalina Sobrino Figaredo, Doron Chelouche, Martin Haas, Michael Ramolla, Shai Kaspi, Swayamtrupta Panda, Martin W. Ochmann, Shay Zucker, Rolf Chini, Malte A. Probst, Wolfram Kollatschny, Miguel Murphy

    Published 2025-01-01
    “…Our work demonstrates the effectiveness of small telescopes in conducting high-fidelity PRM campaigns of prominent emission lines in bright active galactic nuclei.…”
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    Time-resolved Hubble Space Telescope UV Observations of an X-Ray Quasiperiodic Eruption Source by T. Wevers, M. Guolo, S. Lockwood, A. Mummery, D. R. Pasham, R. Arcodia

    Published 2025-01-01
    “…Here, we report on time-resolved, coordinated Hubble Space Telescope far-ultraviolet (FUV) and XMM-Newton X-ray observations of the shortest period X-ray QPE source currently known, eRO-QPE2. …”
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  4. 24

    Introducing the Condor Array Telescope. V. Deep Broad- and Narrowband Imaging Observations of the M81 Group by Kenneth M. Lanzetta, Stefan Gromoll, Michael M. Shara, David Valls-Gabaud, Frederick M. Walter, John K. Webb

    Published 2025-01-01
    “…We used the Condor Array Telescope to obtain deep imaging observations through the luminance broadband and He ii 468.6 nm, [O iii ] 500.7 nm, He i 587.5 nm, H α , [N ii ] 658.4 nm, and [S ii ] 671.6 nm narrowband filters of an extended region comprising 13 “Condor fields” spanning ≈ 8 × 8 deg ^2 on the sky centered near M81 and M82. …”
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  5. 25

    Why the Real Atmosphere Has More Energy than Climate Models: Implications for Ground-Based Telescopes by Adrian F. Tuck

    Published 2025-01-01
    “…The effect of temperature on the overhead water vapour column at ground-based telescopes is also open to the effects of climate change. …”
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    Analysis of ∼106 Spiral Galaxies from Four Telescopes Shows Large-Scale Patterns of Asymmetry in Galaxy Spin Directions by Lior Shamir

    Published 2022-01-01
    “…This study uses large datasets collected by four different robotic telescopes to profile the large-scale distribution of the spin directions of spiral galaxies. …”
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    The Hobby–Eberly Telescope Dark Energy Experiment Survey (HETDEX) Active Galactic Nuclei Catalog: The Fourth Data Release by Chenxu Liu, Karl Gebhardt, Erin Mentuch Cooper, Dustin Davis, Donald P. Schneider, Matt J. Jarvis, Daniel J. Farrow, Steven L. Finkelstein, Óscar A. Chávez Ortiz, The HETDEX Collaboration

    Published 2025-01-01
    “…We present the active galactic nuclei (AGN) catalog from the fourth data release (HDR4) of the Hobby–Eberly Telescope Dark Energy Experiment Survey (HETDEX). HETDEX is an untargeted spectroscopic survey. …”
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    High-time-cadence Spectroscopy and Photometry of Stellar Flares on M dwarf YZ Canis Minoris with the Seimei Telescope and TESS. I. Discovery of Rapid and Short-duration Prominence Eruptions by Yuto Kajikiya, Kosuke Namekata, Yuta Notsu, Hiroyuki Maehara, Bunei Sato, Daisaku Nogami

    Published 2025-01-01
    “…We conducted spectroscopic monitoring observations of the active M dwarf YZ Canis Minoris with an ∼1 minute time cadence using the Seimei telescope, simultaneously with the optical photometric observations by Transiting Exoplanet Survey Satellite. …”
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    Strong-lensing Analysis of SPT-CL J2325−4111 and SPT-CL J0049−2440, Two Powerful Cosmic Telescopes (RE > 40″) from the SPT Clusters Sample by Guillaume Mahler, Keren Sharon, Matthew Bayliss, Lindsey. E. Bleem, Mark Brodwin, Benjamin Floyd, Raven Gassis, Michael D. Gladders, Gourav Khullar, Juan D. Remolina González, Arnab Sarkar

    Published 2025-01-01
    “…We report the results from a study of two massive ( M _500 _c > 6.0 × 10 ^14 M _⊙ ) strong-lensing clusters selected from the South Pole Telescope cluster survey for their large Einstein radius ( R _E > 40″), SPT-CL J2325−4111 and SPT-CL J0049−2440. …”
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