Search Publications
Linking Extragalactic Transients and Their Host Galaxy Properties: Transient Sample, Multiwavelength Host Identification, and Database Construction
French, K. Decker; Zabludoff, Ann; Behroozi, Peter +7 more
Understanding the preferences of transient types for host galaxies with certain characteristics is key to studies of transient physics and galaxy evolution, as well as to transient identification and classification in the LSST era. Here we describe a value-added database of extragalactic transients-supernovae, tidal disruption events, gamma-ray bu…
Water content trends in K2-138 and other low-mass multi-planetary systems
Deleuil, M.; Morel, T.; Mousis, O. +5 more
Context. Both rocky super-Earths and volatile-rich sub-Neptunes have been found simultaneously in multi-planetary systems, suggesting that these systems are appropriate to study different composition and formation pathways within the same environment.
Aims: We perform a homogeneous interior structure analysis of five multi-planetary systems t…
Acceleration of Solar Energetic Particles through CME-driven Shock and Streamer Interaction
Susino, Roberto; West, Matthew J.; Frassati, Federica +5 more
On 2013 June 21, a solar prominence eruption was observed, accompanied by an M2.9 class flare, a fast coronal mass ejection, and a type II radio burst. The concomitant emission of solar energetic particles (SEPs) produced a significant proton flux increase, in the energy range 4-100 MeV, measured by the Low and High Energy Telescopes on board the …
Damped Lyα Absorbers in Star-forming Galaxies at z < 0.15 Detected with the Hubble Space Telescope and Implications for Galactic Evolution
Bowen, David V.; Noterdaeme, Pasquier; York, Donald G. +4 more
We report Hubble Space Telescope Cosmic Origins Spectrograph spectroscopy of 10 quasars with foreground star-forming galaxies at 0.02 < z < 0.14 within impact parameters of ~1-7 kpc. We detect damped/sub-damped Lyα (DLA/sub-DLA) absorption in 100% of cases where no higher-redshift Lyman-limit systems extinguish the flux at the expected wavel…
Candidate Eclipsing Binary Systems with a δ Scuti Star in Northern TESS Field
Kahraman Aliçavuş, F.; Aliçavuş, F.; Ekinci, Ö. +4 more
The existence of pulsating stars in eclipsing binaries has been known for decades. These types of objects are extremely valuable systems for astronomical studies as they exhibit both eclipse and pulsation variations. The eclipsing binaries are the only way to directly measure the mass and radius of stars with a good accuracy (≤1%), while the pulsa…
Three new high-mass X-ray binaries in the Large Magellanic Cloud
Haberl, F.; Udalski, A.; Vasilopoulos, G. +4 more
Context. The Magellanic Clouds host a large population of high-mass X-ray binary (HMXB) systems, and although the Large Magellanic Cloud (LMC) is an order of magnitude more massive than the Small Magellanic Cloud, there are significantly fewer known HMXBs in the former.
Aims: We conducted a search for new HMXBs in XMM-Newton observations that…
The Rapid Rotation of the Strongly Magnetic Ultramassive White Dwarf EGGR 156
Hermes, J. J.; Vanderbosch, Zachary P.; Williams, Kurtis A.
The distribution of white dwarf rotation periods provides a means for constraining angular momentum evolution during the late stages of stellar evolution, as well as insight into the physics and remnants of double degenerate mergers. Although the rotational distribution of low-mass white dwarfs is relatively well constrained via asteroseismology, …
HD-TESS: An Asteroseismic Catalog of Bright Red Giants within TESS Continuous Viewing Zones
Huber, Daniel; Stello, Dennis; Hon, Marc +2 more
We present HD-TESS, a catalog of 1709 bright (V ~ 3-10) red giants from the Henry Draper (HD) Catalog with asteroseismic measurements based on photometry from NASA's Transiting Exoplanet Survey Satellite (TESS). Using light curves spanning at least 6 months across a single TESS observing cycle, we provide measurements of global asteroseismic param…
Warp and flare of the Galactic disc revealed with supergiants by Gaia EDR3
López-Corredoira, M.; Chrobáková, Ž.; Nagy, R.
Context. The outer Galactic disc contains some features such as the warp and flare, whose origin is still debated. The Gaia data provide an excellent opportunity to probe the Galactic disc at large distances and study these features.
Aims: We derive the density distributions of the average (old) whole population and the supergiants (represent…
Neutron-capture elements record the ordered chemical evolution of the disc over time
Buder, Sven; Ness, Melissa K.; Horta, Danny +2 more
An ensemble of chemical abundances probing different nucleosynthetic channels can be leveraged to build a comprehensive understanding of the chemical and structural evolution of the Galaxy. Using GALAH DR3 data, we seek to trace the enrichment by the supernovae Ia, supernovae II, asymptotic giant branch stars, and neutron-star mergers and/or colla…