Search Publications
Missions
Journals
Publication Years
The DBL Survey I: discovery of 34 double-lined double white dwarf binaries
Toonen, Silvia; Pelisoli, Ingrid; Munday, James +8 more
We present the first discoveries of the double-lined double white dwarf (DBL) survey that targets overluminous sources with respect to the canonical white dwarf cooling sequence according to a set of well-defined criteria. The primary goal of the DBL survey is to identify compact double white dwarf binary star systems from a unique spectral detect…
Filamentary Network and Magnetic Field Structures Revealed with BISTRO in the High-mass Star-forming Region NGC 2264: Global Properties and Local Magnetogravitational Configurations
Zhang, Yapeng; Pattle, Kate; Karoly, Janik +154 more
We report 850 µm continuum polarization observations toward the filamentary high-mass star-forming region NGC 2264, taken as part of the B-fields In STar forming Regions Observations large program on the James Clerk Maxwell Telescope. These data reveal a well-structured nonuniform magnetic field in the NGC 2264C and 2264D regions with a prev…
The MAGPI survey: evolution of radial trends in star formation activity across cosmic time
Ellison, Sara L.; Gupta, Anshu; Mendel, J. Trevor +19 more
Using adaptive optics with the Multi-Unit Spectroscopic Explorer on the Very Large Telescope, the Middle Ages Galaxy Properties with Integral Field Spectroscopy survey allows us to study the spatially resolved Universe at a crucial time of ~4 Gyr ago (z ~ 0.3) when simulations predict the greatest diversity in evolutionary pathways for galaxies. W…
Mapping the Galactic Disk with the LAMOST and Gaia Red Clump Sample. VIII. Mapping the Kinematics of the Galactic Disk Using Mono-age and Mono-abundance Stellar Populations
Huang, Yang; Jiang, Biwei; Zhang, Huawei +5 more
We present a comprehensive study of the kinematic properties of the different Galactic disk populations, as defined by the chemical abundance ratios and stellar ages, across a large disk volume (4.5 ≤ R ≤ 15.0 kpc and ∣Z∣ ≤ 3.0 kpc), by using the LAMOST-Gaia red clump sample stars. We determine the median velocities for various spatial and populat…
J-PLUS: Beyond Spectroscopy. III. Stellar Parameters and Elemental-abundance Ratios for Five Million Stars from DR3
Fan, Zhou; Huang, Yang; Liu, Jifeng +24 more
We present a catalog of stellar parameters (effective temperature T eff, surface gravity
Reading between the (Spectral) Lines: Magellan/IMACS Spectroscopy of the Ultrafaint Dwarf Galaxies Eridanus IV and Centaurus I
James, D. J.; Li, T. S.; Carlin, J. L. +18 more
We present a spectroscopic analysis of Eridanus IV (Eri IV) and Centaurus I (Cen I), two ultrafaint dwarf galaxies of the Milky Way. Using IMACS/Magellan spectroscopy, we identify 28 member stars of Eri IV and 34 member stars of Cen I. For Eri IV, we measure a systemic velocity of ${v}_{\mathrm{sys}}=-{31.5}_{-1.2}^{+1.3}\ \mathrm{km}\,{{\rm{s}}}^…
What is the Reynolds Number of the Solar Wind?
Wrench, Daniel; Parashar, Tulasi N.; Oughton, Sean +2 more
The Reynolds number, Re, is an important quantity for describing a turbulent flow. It tells us about the bandwidth over which energy can cascade from large scales to smaller ones, prior to the onset of dissipation. However, calculating it for nearly collisionless plasmas like the solar wind is challenging. Previous studies have used formulations o…
A Dynamical Model for IRAS 00500+6713: The Remnant of a Type Iax Supernova SN 1181 Hosting a Double Degenerate Merger Product WD J005311
Uchida, Hiroyuki; Bamba, Aya; Tanaka, Takaaki +6 more
IRAS 00500+6713 is a hypothesized remnant of a Type Iax supernova SN 1181. Multiwavelength observations have revealed its complicated morphology; a dusty infrared ring is sandwiched by the inner and outer X-ray nebulae. We analyze the archival X-ray data taken by XMM-Newton and Chandra X-ray Observatory to constrain the angular radius, mass, and m…
The high energy X-ray probe (HEX-P): probing the physics of the X-ray corona in active galactic nuclei
Nardini, Emanuele; Ricci, Claudio; Walton, Dominic J. +27 more
The hard X-ray emission in active galactic nuclei (AGN) and black hole X-ray binaries is thought to be produced by a hot cloud of electrons referred to as the corona. This emission, commonly described by a power law with a high-energy cutoff, is suggestive of Comptonization by thermal electrons. While several hypotheses have been proposed to expla…
A hot-Jupiter progenitor on a super-eccentric retrograde orbit
Schneider, Donald P.; Cochran, William D.; Mahadevan, Suvrath +57 more
Giant exoplanets orbiting close to their host stars are unlikely to have formed in their present configurations1. These `hot Jupiter' planets are instead thought to have migrated inward from beyond the ice line and several viable migration channels have been proposed, including eccentricity excitation through angular-momentum exchange w…