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PSR J0210+5845: Ultra-wide binary pulsar with a B6 V main sequence star companion
Casares, J.; Nelemans, G.; Yanes-Rizo, I. V. +5 more
We report on radio timing observations of PSR J0210+5845 that reveal large deviations from typical pulsar spin-down behaviour. We interpret these deviations as being due to the binary motion around the V = 13.5 star 2MASS J02105640+5845176, which is coincident in terms of its celestial position and distance with the pulsar. Archival observations a…
Near Subsonic Solar Wind Outflow from an Active Region
Riley, Pete; Bale, Stuart D.; Sioulas, Nikos +10 more
During Parker Solar Probe (Parker) Encounter 15 (E15), we observe an 18 hr period of near-subsonic (M S ∼ 1) and sub-Alfvénic (SA), M A ⋘ 1, slow-speed solar wind from 22 to 15.6 R ⊙. As the most extreme SA interval measured to date and skirting the solar wind sonic point, it is the deepest Parker has probed into t…
Probing supermassive black hole growth and its dependence on stellar mass and star formation rate in low-redshift galaxies
Georgakakis, A.; Vignali, C.; Paolillo, M. +4 more
We present an improved study of the relation between supermassive black hole growth and their host galaxy properties in the local Universe (z < 0.33). To this end, we build an extensive sample combining spectroscopic measurements of star formation rate (SFR) and stellar mass from Sloan Digital Sky Survey, with specific Black Hole accretion rate…
Slow Rotation for the Super-puff Planet Kepler-51d
Winn, Joshua N.; Lammers, Caleb
Super-puffs are low-density planets of unknown origin and composition. If they form by accreting nebular gas through a circumplanetary disk, one might expect super-puffs to be spinning quickly. Here, we derive upper limits on the rotational oblateness of the super-puff Kepler-51d, based on precise transit observations with the NIRSpec instrument o…
Searching for GEMS: Characterizing Six Giant Planets Around Cool Dwarfs
Kobulnicky, Henry A.; Vanderburg, Andrew; Kowalski, Adam F. +42 more
Transiting giant exoplanets around M-dwarf stars (GEMS) are rare, owing to the low-mass host stars. However, the all-sky coverage of TESS has enabled the detection of an increasingly large number of them to enable statistical surveys like the Searching for GEMS survey. As part of this endeavor, we describe the observations of six transiting giant …
Radial Wave in the Galactic Disk: New Clues to Discriminate Different Perturbations
Antoja, Teresa; Schönrich, Ralph; Li, Zhao-Yu +1 more
Decoding the key dynamical processes that shape the Galactic disk structure is crucial for reconstructing the Milky Way's evolution history. The second Gaia data release unveils a novel wave pattern in the L Z ‑<V R > space, but its formation mechanism remains elusive due to the intricate nature of involved perturbati…
Evidence for transient morning water frost deposits on the Tharsis volcanoes of Mars
Vandaele, A. C.; Daerden, F.; Ristic, B. +27 more
The present-day water cycle on Mars has implications for habitability and future human exploration. Water ice clouds and water vapour have been detected above the Tharsis volcanic province, suggesting the active exchange of water between regolith and atmosphere. Here we report observational evidence for extensive transient morning frost deposits o…
eROSITA studies of the Carina nebula
Sasaki, Manami; Pühlhofer, Gerd; Tsuge, Kisetsu +4 more
Context. During the first four all-sky surveys eRASS:4, which was carried out from December 2019 to 2021, the extended Roentgen Survey with an Imaging Telescope Array (eROSITA) on board the Spektrum-Roentgen-Gamma (Spektr-RG, SRG) observed the Galactic H II region, the Carina nebula.
Aims: We analysed the eRASS:4 data to study the distributio…
Benchmarking the IRDC G351.77-0.53: Gaia DR3 distance, mass distribution, and star formation content
Megeath, S. T.; Xu, Fengwei; Stutz, A. M. +4 more
While intensively studied, it remains unclear how the star formation (SF) in infrared dark clouds (IRDCs) compares to that of nearby clouds. We study G351.77-0.53 (henceforth G351), a cluster-forming filamentary IRDC. We begin by characterizing its young stellar object (YSO) content. Based on the average parallax of likely members, we obtain a Gai…
The Orbit and Companion of PSR J1622-0315: Variable Asymmetry and a Massive Neutron Star
Kennedy, Mark R.; Turchetta, Marco; Sen, Bidisha +6 more
The companion to PSR J1622-0315, one of the most compact known redback millisecond pulsars, shows extremely low irradiation despite its short orbital period. We model this system to determine the binary parameters, combining optical observations from the New Technology Telescope in 2017 and the Nordic Optical Telescope in 2022 with the binary mode…