Search Publications
Crust stratigraphy and heterogeneities of the first kilometers at the dichotomy boundary in western Elysium Planitia and implications for InSight lander
Pan, Lu; Quantin-Nataf, Cathy; Tauzin, Benoit +9 more
InSight landed on Mars on November 26, 2018, in western Elysium Planitia. The Mars crust beneath the lander is subject to complex geologic history next to the great topographic and crustal dichotomy of Mars. Understanding this part of the Martian crust in the subsurface would aid future investigations of the internal structure of the planet based …
Hinode/EIS Measurements of Active-region Magnetic Fields
Landi, E.; Li, W.; Hutton, R. +1 more
The present work illustrates the potential of a new diagnostic technique that allows the measurement of the coronal magnetic field strength in solar active regions by utilizing a handful of bright Fe X and Fe XI lines commonly observed by the high-resolution Hinode/EUV Imaging Spectrometer (EIS). The importance of this new diagnostic technique is …
WASP-52b. The effect of star-spot correction on atmospheric retrievals
Mikal-Evans, Thomas; Sing, David K.; López-Morales, Mercedes +13 more
We perform atmospheric retrievals on the full optical to infrared (0.3-5 µ m) transmission spectrum of the inflated hot Jupiter WASP-52b by combining HST/STIS, WFC3 IR, and Spitzer/IRAC observations. As WASP-52 is an active star that shows both out-of-transit photometric variability and star-spot crossings during transits, we account for the…
SCUBA-2 Ultra Deep Imaging EAO Survey (Studies). III. Multiwavelength Properties, Luminosity Functions, and Preliminary Source Catalog of 450 µm Selected Galaxies
Goto, Tomotsugu; Smail, Ian; Ho, Luis C. +35 more
We construct a SCUBA-2 450 µm map in the COSMOS field that covers an area of 300 arcmin2 and reaches a 1σ noise level of 0.65 mJy in the deepest region. We extract 256 sources detected at 450 µm with signal-to-noise ratios >4.0 and analyze the physical properties of their multiwavelength counterparts. We find that most of…
New Insights into the H II Region G18.88-0.49: Hub-Filament System and Accreting Filaments
Dewangan, L. K.; Ojha, D. K.; Sharma, Saurabh +3 more
We present an analysis of multiwavelength observations of an area of 0°27 × 0°27 around the Galactic H II region G18.88-0.49, which is powered by an O-type star (age ∼ 105 yr). The Herschel column density map reveals a shell-like feature of extension ∼12 pc × 7 pc and mass ∼2.9 × 104 M⊙ around the H II region; its …
Discovery of a hot, transiting, Earth-sized planet and a second temperate, non-transiting planet around the M4 dwarf GJ 3473 (TOI-488)
Kuzuhara, M.; Tamura, M.; Bouchy, F. +93 more
We present the confirmation and characterisation of GJ 3473 b (G 50-16, TOI-488.01), a hot Earth-sized planet orbiting an M4 dwarf star, whose transiting signal (P = 1.1980035 ± 0.0000018 d) was first detected by the Transiting Exoplanet Survey Satellite (TESS). Through a joint modelling of follow-up radial velocity observations with CARMENES, IRD…
Constraints on dark matter-nucleon effective couplings in the presence of kinematically distinct halo substructures using the DEAP-3600 detector
Willis, J.; Chen, Y.; Ward, M. +86 more
DEAP-3600 is a single-phase liquid argon detector aiming to directly detect weakly interacting massive particles (WIMPs), located at SNOLAB (Sudbury, Canada). After analyzing data taken during the first year of operation, a null result was used to place an upper bound on the WIMP-nucleon, spin-independent, isoscalar cross section. This study reint…
Stellar mass as a galaxy cluster mass proxy: application to the Dark Energy Survey redMaPPer clusters
Annis, J.; Brooks, D.; Burke, D. L. +83 more
We introduce a galaxy cluster mass observable, µ⋆, based on the stellar masses of cluster members, and we present results for the Dark Energy Survey (DES) Year 1 (Y1) observations. Stellar masses are computed using a Bayesian model averaging method, and are validated for DES data using simulations and COSMOS data. We show that &mi…
Multiband GPI Imaging of the HR 4796A Debris Disk
Weinberger, Alycia J.; Schneider, Glenn; Duchêne, Gaspard +36 more
We have obtained Gemini Planet Imager (GPI) J-, H-, K1-, and K2-Spec observations of the iconic debris ring around the young, main-sequence star HR 4796A. We applied several point-spread function (PSF) subtraction techniques to the observations (Mask-and-Interpolate, RDI-NMF, RDI-KLIP, and ADI-KLIP) to measure the geometric parameters and the scat…
Satellites of Satellites: The Case for Carina and Fornax
Springel, Volker; Gómez, Facundo A.; Marinacci, Federico +6 more
We use the Auriga cosmological simulations of Milky Way (MW)-mass galaxies and their surroundings to study the satellite populations of dwarf galaxies in ΛCDM. As expected from prior work, the number of satellites above a fixed stellar mass is a strong function of the mass of the primary dwarf. For galaxies as luminous as the Large Magellanic Clou…