Search Publications
GOALS-JWST: Gas Dynamics and Excitation in NGC 7469 Revealed by NIRSpec
Inami, Hanae; Böker, Torsten; Law, David R. +36 more
We present new JWST NIRSpec integral field spectroscopy (IFS) data for the luminous infrared galaxy NGC 7469, a nearby (70.6 Mpc) active galaxy with a Seyfert 1.5 nucleus that drives a highly ionized gas outflow and a prominent nuclear star-forming ring. Using the superb sensitivity and high spatial resolution of the JWST instrument NIRSpec IFS, w…
Local primordial non-Gaussianity from the large-scale clustering of photometric DESI luminous red galaxies
Miquel, Ramon; Sanchez, Eusebio; Font-Ribera, Andreu +46 more
We use angular clustering of luminous red galaxies from the Dark Energy Spectroscopic Instrument (DESI) imaging surveys to constrain the local primordial non-Gaussianity parameter fNL. Our sample comprises over 12 million targets, covering 14 000 deg2 of the sky, with redshifts in the range 0.2 < z < 1.35. We identify G…
The Sunburst Arc with JWST: I. Detection of Wolf-Rayet stars injecting nitrogen into a low-metallicity, z = 2.37 proto-globular cluster leaking ionizing photons
Dahle, H.; Rigby, J. R.; Bayliss, M. B. +13 more
We report the detection of a population of Wolf-Rayet (WR) stars in the Sunburst Arc, a strongly gravitationally lensed galaxy at redshift z = 2.37. As the brightest known lensed galaxy, the Sunburst Arc has become an important cosmic laboratory for studying star and cluster formation, Lyman α (Lyα) radiative transfer, and Lyman continuum (LyC) es…
The JWST Early Release Science Program for Direct Observations of Exoplanetary Systems. V. Do Self-consistent Atmospheric Models Represent JWST Spectra? A Showcase with VHS 1256–1257 b
Henning, Thomas; Fortney, Jonathan J.; Carter, Aarynn L. +119 more
The unprecedented medium-resolution (R λ ∼ 1500–3500) near- and mid-infrared (1–18 µm) spectrum provided by JWST for the young (140 ± 20 Myr) low-mass (12–20 M Jup) L–T transition (L7) companion VHS 1256 b gives access to a catalog of molecular absorptions. In this study, we present a comprehensive analysis of this da…
Mapping Obscured Star Formation in the Host Galaxy of FRB 20201124A
Kilpatrick, Charles D.; Simha, Sunil; Prochaska, J. Xavier +23 more
We present high-resolution 1.5-6 GHz Karl G. Jansky Very Large Array and Hubble Space Telescope (HST) optical and infrared observations of the extremely active repeating fast radio burst (FRB) FRB 20201124A and its barred spiral host galaxy. We constrain the location and morphology of star formation in the host and search for a persistent radio so…
Standard siren measurement of the Hubble constant using GW170817 and the latest observations of the electromagnetic counterpart afterglow
Palmese, A.; Margutti, R.; Hajela, A. +3 more
We present a new constraint on the Hubble constant H0 using the latest measurements of the electromagnetic counterpart to the gravitational wave (GW) event GW170817. We use the latest optical, x-ray and radio observations of the afterglow up to ∼3.5 years after the GW detection, and properly take into account the impact of the host gala…
A Large and Variable Leading Tail of Helium in a Hot Saturn Undergoing Runaway Inflation
Vanderburg, Andrew; Cochran, William D.; Mahadevan, Suvrath +14 more
Atmospheric escape shapes the fate of exoplanets, with statistical evidence for transformative mass loss imprinted across the mass–radius–insolation distribution. Here, we present transit spectroscopy of the highly irradiated, low-gravity, inflated hot Saturn HAT-P-67 b. The Habitable Zone Planet Finder spectra show a detection of up to 10% absorp…
Confronting sparse Gaia DR3 photometry with TESS for a sample of around 60 000 OBAF-type pulsators
Aerts, Conny; Hey, Daniel
Context. The Gaia mission has delivered hundreds of thousands of variable star light curves in multiple wavelengths. Recent work demonstrates that these light curves can be used to identify (non-)radial pulsations in OBAF-type stars, despite their irregular cadence and low light curve precision, of the order of a few millimagnitudes. With the cons…
Alive but Barely Kicking: News from 3+ yr of Swift and XMM-Newton X-Ray Monitoring of Quasiperiodic Eruptions from eRO-QPE1
Altamirano, D.; Wevers, T.; Karas, V. +11 more
Quasiperiodic eruptions (QPEs) represent a novel class of extragalactic X-ray transients that are known to repeat at roughly regular intervals of a few hours to days. Their underlying physical mechanism is a topic of heated debate, with most models proposing that they originate either from instabilities within the inner accretion flow or from orbi…
The 33 M⊙ black hole Gaia BH3 is part of the disrupted ED-2 star cluster
Mazeh, T.; Caffau, E.; Cabrera-Ziri, I. +19 more
Context. The Gaia Collaboration has recently reported the detection of a 33 M⊙ black hole in a wide binary system located in the solar neighbourhood.
Aims: Here we explore the relationship between this black hole, known as Gaia BH3, and the nearby ED-2 halo stellar stream.
Methods: We studied the orbital characteristics of the…