Kavli Affiliate: Andrew Vanderburg | First 5 Authors: Alexander Venner, Simon Blouin, Antoine Bédard, Andrew Vanderburg, | Summary: The observational signature of core crystallization of white dwarfs has recently been discovered. However, the magnitude of the crystallization-powered cooling delay required to match observed white dwarfs is larger than predicted by conventional models, requiring additional mechanisms […]
Kavli Affiliate: T. Higuchi | First 5 Authors: Belle, Belle II Collaboration, :, I. Adachi, L. Aggarwal | Summary: We measure $C!P$ asymmetries and branching-fraction ratios for $B^pm to DK^pm$ and $Dpi^pm$ decays with $Dto K^0_{rm S} K^pmpi^mp$, where $D$ is a superposition of $D^0$ and $bar{D}^0$. We use the full data set of the […]
Kavli Affiliate: T. Higuchi | First 5 Authors: Belle II Collaboration, I. Adachi, K. Adamczyk, L. Aggarwal, H. Aihara | Summary: Additional spin-0 particles appear in many extensions of the standard model. We search for long-lived spin-0 particles $S$ in $B$-meson decays mediated by a $bto s$ quark transition in $e^+e^-$ collisions at the $Upsilon(4S)$ […]
Kavli Affiliate: Roberto Maiolino | First 5 Authors: William M. Baker, Sandro Tacchella, Benjamin D. Johnson, Erica Nelson, Katherine A. Suess | Summary: The physical processes that establish the morphological evolution and the structural diversity of galaxies are key unknowns in extragalactic astrophysics. Here we report the finding of the morphologically-mature galaxy JADES-GS+53.18343-27.79097, which existed […]
Kavli Affiliate: Roberto Maiolino | First 5 Authors: Gareth C. Jones, Andrew J. Bunker, Aayush Saxena, Joris Witstok, Daniel P. Stark | Summary: The rest-frame UV recombination emission line Ly$alpha$ can be powered by ionising photons from young massive stars in star forming galaxies, but its ability to be resonantly scattered by neutral gas complicates […]
Kavli Affiliate: Roberto Maiolino | First 5 Authors: Kevin N. Hainline, Benjamin D. Johnson, Brant Robertson, Sandro Tacchella, Jakob M. Helton | Summary: We present a catalog of 717 candidate galaxies at $z > 8$ selected from 125 square arcminutes of NIRCam imaging as part of the JWST Advanced Deep Extragalactic Survey (JADES). We combine […]
Kavli Affiliate: Roberto Maiolino | First 5 Authors: Andrew J. Bunker, Alex J. Cameron, Emma Curtis-Lake, Peter Jakobsen, Stefano Carniani | Summary: We describe the NIRSpec component of the JWST Deep Extragalactic Survey (JADES), and provide deep spectroscopy of 253 sources targeted with the NIRSpec micro-shutter assembly in the Hubble Ultra Deep Field and surrounding […]
Kavli Affiliate: Roberto Maiolino | First 5 Authors: Marcia J. Rieke, Brant E. Robertson, Sandro Tacchella, Kevin Hainline, Benjamin D. Johnson | Summary: JWST has revolutionized the field of extragalactic astronomy with its sensitive and high-resolution infrared view of the distant universe. Adding to the new legacy of JWST observations, we present the first NIRCam […]
Kavli Affiliate: Herman L. Marshall | First 5 Authors: Victor Doroshenko, Juri Poutanen, Jeremy Heyl, Sergey S. Tsygankov, Ilaria Caiazzo | Summary: We report on Imaging X-ray polarimetry explorer (IXPE) observations of the Be-transient X-ray pulsar LS V +44 17/RX J0440.9+4431 made at two luminosity levels during the giant outburst in January–February 2023. Considering the […]
Kavli Affiliate: Mark Vogelsberger | First 5 Authors: William Lake, Smadar Naoz, Federico Marinacci, Blakesley Burkhart, Mark Vogelsberger | Summary: The formation mechanism of globular clusters (GCs) has long been debated by astronomers. It was recently proposed that Supersonically Induced Gas Objects (SIGOs), which formed in the early Universe due to the supersonic relative motion […]