Patricia T. Boyd

Mass determination of two Jupiter-sized planets orbiting slightly evolved stars: TOI-2420 b and TOI-2485 b

I. Carleo, O. Barragán, C. M. Persson, M. Fridlund et autres

Context. Hot and warm Jupiters might have undergone the same formation and evolution path, but the two populations exhibit different distributions of orbital parameters. This challenges our understanding of their actual origin. Aims. We report the results of our warm Jupiters survey, …

es, it, gb, se, nl, de, us, cl, au, cz, pl, fr, ch, jp, bg (code pays fourni par la source)

Mass determination of two Jupiter-sized planets orbiting slightly evolved stars: TOI-2420 b and TOI-2485 b

I. Carleo, O. Barragán, Carina M. Persson, M. Fridlund et autres

Hot and warm Jupiters might have undergone the same formation and evolution path, but the two populations exhibit different distributions of orbital parameters, challenging our understanding on their actual origin. The present work, which is the results of our warm Jupiters survey …

A Multiwavelength Survey of Nearby M Dwarfs: Optical and Near-ultraviolet Flares and Activity with Contemporaneous TESS, Kepler/K2, Swift, and HST Observations

Rishi R. Paudel, Thomas Barclay, Allison Youngblood, Elisa V. Quintana et autres

Abstract We present a comprehensive multiwavelength investigation into flares and activity in nearby M dwarf stars. We leverage the most extensive contemporaneous data set obtained through the Transiting Exoplanet Sky Survey, Kepler/K2, the Neil Gehrels Swift Observatory, and the Hubble Space Telescope, …

us, fr (code pays fourni par la source)

A Multiwavelength Survey of Nearby M dwarfs: Optical and Near-Ultraviolet Flares and Activity with Contemporaneous TESS, Kepler/K2, \textit{Swift}, and HST Observations

Rishi R. Paudel, Thomas Barclay, Allison Youngblood, Elisa V. Quintana et autres

We present a comprehensive multiwavelength investigation into flares and activity in nearby M~dwarf stars. We leverage the most extensive contemporaneous dataset obtained through the Transiting Exoplanet Sky Survey (TESS), Kepler/K2, the Neil Gehrels Swift Observatory (\textit{Swift}), and the Hubble Space Telescope (HST), …

A Phenomenon Resembling Early Superhumps in a New SU UMa-type Dwarf Nova with a 2 hr Orbital Period

Rebecca S. Boyle, Colin Littlefield, P. Garnavich, Ryan Ridden-Harper et autres

Abstract We investigate K2BS5, an optical transient that we identified in Campaign 13 of the Kepler/K2 archives by the K2 Background Survey, and classify it as a new SU UMa-type dwarf nova. Using the light curve generated from Keplers long-cadence observation mode, …

us, nz (code pays fourni par la source)

Two Warm Super-Earths Transiting the Nearby M Dwarf TOI-2095

Elisa V. Quintana, Emily A. Gilbert, Thomas Barclay, Michele L. Silverstein et autres

Abstract We report the detection and validation of two planets orbiting TOI-2095 (TIC 235678745). The host star is a 3700 K M1V dwarf with a high proper motion. The star lies at a distance of 42 pc in a sparsely populated portion …

us, ca, nl, ru, Afrique du Sud (code pays fourni par la source)

A Phenomenon Resembling Early Superhumps in a New SU UMa-Type Dwarf Nova with a 2-Hour Orbital Period

Rebecca Boyle, Colin Littlefield, P. Garnavich, Ryan Ridden-Harper et autres

We investigate K2BS5, an optical transient that we identified in Campaign 13 of the Kepler/K2 archives by the "K2 Background Survey", and classify it as a new SU UMa-type dwarf nova. Using the light curve generated from Kepler's long-cadence observation mode, we …

The L 98-59 System: Three Transiting, Terrestrial-size Planets Orbiting a Nearby M Dwarf

Z. Essack, L. Delrez, N.E. Batalha, Jeffrey L. Coughlin et autres

We report the Transiting Exoplanet Survey Satellite (TESS) discovery of three terrestrial-size planets transiting L 98-59 (TOI-175, TIC 307210830) - a bright M dwarf at a distance of 10.6 pc. Using the Gaia-measured distance and broadband photometry, we find that the host …

us (code pays fourni par la source)

Chandra, HST/STIS, NICER, Swift, and TESS Detail the Flare Evolution of the Repeating Nuclear Transient ASASSN -14ko

A. V. Payne, Katie Auchettl, B. J. Shappee, C. S. Kochanek et autres

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 the All-Sky Automated Survey for Supernovae (ASAS-SN) and their peak times are well-modeled with a period …

us, au (code pays fourni par la source)

Two Warm Super-Earths Transiting the Nearby M Dwarf TOI-2095

Elisa V. Quintana, Emily A. Gilbert, Thomas Barclay, Michele L. Silverstein et autres

We report the detection and validation of two planets orbiting TOI-2095 (TIC 235678745). The host star is a 3700K M1V dwarf with a high proper motion. The star lies at a distance of 42 pc in a sparsely populated portion of the …

Investigating non-linear and stochastic hard X-ray variability of active galactic nuclei using recurrence analysis

Rebecca Phillipson, Michael S. Vogeley, Patricia T. Boyd

ABSTRACT We present results of recurrence analysis of 46 active galactic nuclei (AGNs) using light curves from the 157-month catalogue of the Swift Burst Alert Telescope (BAT) in the 14–150 keV band. We generate recurrence plots and compute recurrence plot metrics for …

us (code pays fourni par la source)

An old warm Jupiter orbiting the metal-poor G-dwarf TOI-5542

Nolan Grieves, F. Bouchy, Soléne Ulmer-Moll, Samuel Gill et autres

We report the discovery of a 1.32 −0.10 +0.10 M Jup planet orbiting on a 75.12 day period around the G3V 10.8 −3.6 +2.1 Gyr old star TOI-5542 (TIC 466206508; TYC 9086-1210-1). The planet was first detected by the Transiting Exoplanet Survey …

ch, gb, us, de, nl, cl, Afrique du Sud (code pays fourni par la source)