Search Publications
The JWST Extragalactic Mock Catalog: Modeling Galaxy Populations from the UV through the Near-IR over 13 Billion Years of Cosmic History
Chevallard, Jacopo; Maseda, Michael V.; Carniani, Stefano +24 more
We present an original phenomenological model to describe the evolution of galaxy number counts, morphologies, and spectral energy distributions across a wide range of redshifts (0.2< z< 15) and stellar masses [{log}(M/{M}⊙ )≥slant 6]. Our model follows observed mass and luminosity functions of both star-forming and quiescent gala…
Cosmic evolution and metal aversion in superluminous supernova host galaxies
Bauer, F. E.; Kim, S.; Buchner, J. +21 more
The SUperluminous Supernova Host galaxIES survey aims to provide strong new constraints on the progenitors of superluminous supernovae (SLSNe) by understanding the relationship to their host galaxies. We present the photometric properties of 53 H-poor and 16 H-rich SLSN host galaxies out to z ∼ 4. We model their spectral energy distributions to de…
CO and Dust Properties in the TW Hya Disk from High-resolution ALMA Observations
Hughes, A. Meredith; Wilner, David J.; Cleeves, L. Ilsedore +10 more
We analyze high angular resolution ALMA observations of the TW Hya disk to place constraints on the CO and dust properties. We present new, sensitive observations of the 12CO J = 3 - 2 line at a spatial resolution of 8 au (0.″14). The CO emission exhibits a bright inner core, a shoulder at r ≈ 70 au, and a prominent break in slope at r …
Structure formation in f(T) gravity and a solution for H0 tension
Nunes, Rafael C.
We investigate the evolution of scalar perturbations in f(T) teleparallel gravity and its effects on the cosmic microwave background (CMB) anisotropy. The f(T) gravity generalizes the teleparallel gravity which is formulated on the Weitzenböck spacetime, characterized by the vanishing curvature tensor (absolute parallelism) and the non-vanishing t…
X-rays across the galaxy population - II. The distribution of AGN accretion rates as a function of stellar mass and redshift.
Georgakakis, A.; Aird, J.; Coil, A. L.
We use deep Chandra X-ray imaging to measure the distribution of specific black hole accretion rates ($L_X$ relative to the stellar mass of the galaxy) and thus trace AGN activity within star-forming and quiescent galaxies, as a function of stellar mass (from $10^{8.5}-10^{11.5} M_\odot$) and redshift (to $z \sim 4$). We adopt near-infrared select…
The Complete Transmission Spectrum of WASP-39b with a Precise Water Constraint
Wakeford, H. R.; Sing, D. K.; Deming, D. +12 more
WASP-39b is a hot Saturn-mass exoplanet with a predicted clear atmosphere based on observations in the optical and infrared. Here, we complete the transmission spectrum of the atmosphere with observations in the near-infrared (NIR) over three water absorption features with the Hubble Space Telescope (HST) Wide Field Camera 3 (WFC3) G102 (0.8-1.1 &…
“Super-deblended” Dust Emission in Galaxies. II. Far-IR to (Sub)millimeter Photometry and High-redshift Galaxy Candidates in the Full COSMOS Field
Calabrò, Antonello; Dickinson, Mark; Daddi, Emanuele +17 more
We present a “super-deblended” far-infrared (FIR) to (sub)millimeter photometric catalog in the Cosmic Evolution Survey (COSMOS), prepared with the method recently developed by Liu et al., with key adaptations. We obtain point-spread function fitting photometry at fixed prior positions including 88,008 galaxies detected in VLA 1.4, 3 GHz, and/or M…
The Eccentric Cavity, Triple Rings, Two-armed Spirals, and Double Clumps of the MWC 758 Disk
Dong, Ruobing; Tamura, Motohide; Wisniewski, John +15 more
Spatially resolved structures in protoplanetary disks hint at unseen planets. Previous imaging observations of the transitional disk around MWC 758 revealed an inner cavity, a ring-like outer disk, emission clumps, and spiral arms, all possibly generated by companions. We present ALMA dust continuum observations of MWC 758 at 0.87 mm wavelength wi…
Detection of He I λ10830 Å absorption on HD 189733 b with CARMENES high-resolution transmission spectroscopy
Schmitt, J. H. M. M.; Alonso-Floriano, F. J.; Sánchez-López, A. +35 more
We present three transit observations of HD 189733 b obtained with the high-resolution spectrograph CARMENES at Calar Alto. A strong absorption signal is detected in the near-infrared He I triplet at 10830 Å in all three transits. During mid-transit, the mean absorption level is 0.88 ± 0.04% measured in a ±10 km s-1 range at a net blues…
Sun-to-Earth MHD Simulation of the 2000 July 14 “Bastille Day” Eruption
Downs, Cooper; Riley, Pete; Linker, Jon A. +6 more
Solar eruptions are the main driver of space-weather disturbances at Earth. Extreme events are of particular interest, not only because of the scientific challenges they pose, but also because of their possible societal consequences. Here we present a magnetohydrodynamic (MHD) simulation of the 2000 July 14 “Bastille Day” eruption, which produced …