Search Publications
First Results from the JWST Early Release Science Program Q3D: Turbulent Times in the Life of a z 3 Extremely Red Quasar Revealed by NIRSpec IFU
Johnson, Sean D.; Lützgendorf, Nora; Maiolino, Roberto +20 more
Extremely red quasars, with bolometric luminosities exceeding 1047 erg s-1, are a fascinating high-redshift population that is absent in the local universe. They are the best candidates for supermassive black holes accreting at rates at or above the Eddington limit, and they are associated with the most rapid and powerful out…
A high angular resolution view of the PAH emission in Seyfert galaxies using JWST/MRS data
Rigopoulou, D.; García-Burillo, S.; Shimizu, T. +16 more
Polycyclic aromatic hydrocarbons (PAHs) are carbon-based molecules that are ubiquitous in a variety of astrophysical objects and environments. In this work we use JWST/MIRI MRS spectroscopy of three Seyferts to compare their nuclear PAH emission with that of star-forming (SF) regions. This study represents the first of its kind to use sub-arcsecon…
Characterization of Two 2 mm detected Optically Obscured Dusty Star-forming Galaxies
Finkelstein, Steven L.; Casey, Caitlin M.; Kartaltepe, Jeyhan S. +22 more
The 2 mm Mapping Obscuration to Reionization with ALMA (MORA) Survey was designed to detect high-redshift (z ≳ 4), massive, dusty star-forming galaxies (DSFGs). Here we present two likely high-redshift sources, identified in the survey, whose physical characteristics are consistent with a class of optical/near-infrared (OIR)-invisible DSFGs found …
The kinematic properties of Milky Way stellar halo populations
Bovy, Jo; Lane, James M. M.; Mackereth, J. Ted
In the Gaia era, stellar kinematics are extensively used to study Galactic halo stellar populations, to search for halo structures, and to characterize the interface between the halo and hot disc populations. We use distribution function-based models of modern data sets with 6D phase space data to qualitatively describe a variety of kinematic spac…
Asteroids for µ Hz gravitational-wave detection
Rajendran, Surjeet; Graham, Peter W.; Fedderke, Michael A.
A major challenge for gravitational-wave (GW) detection in the µ Hz band is engineering a test mass (TM) with sufficiently low acceleration noise. We propose a GW detection concept using asteroids located in the inner Solar System as TMs. Our main purpose is to evaluate the acceleration noise of asteroids in the µ Hz band. We show that…
APERO: A PipelinE to Reduce Observations-Demonstration with SPIRou
Bouchy, François; Vandal, Thomas; Doyon, René +14 more
With the maturation of near-infrared high-resolution spectroscopy, especially when used for precision radial velocity, data reduction has faced unprecedented challenges in terms of how one goes from raw data to calibrated, extracted, and corrected data with required precisions of thousandths of a pixel. Here we present A PipelinE to Reduce Observa…
BASS. XXI. The Data Release 2 Overview
Lamperti, Isabella; Cenko, S. Bradley; Schawinski, Kevin +24 more
The BAT AGN Spectroscopic Survey (BASS) is designed to provide a highly complete census of the key physical parameters of the supermassive black holes (SMBHs) that power local active galactic nuclei (AGNs) (z ≲ 0.3), including their bolometric luminosity (L bol), black hole (BH) mass (M BH), accretion rates (L bol/…
Unveiling the population of dual and lensed active galactic nuclei at sub-arcsec separations
Marconi, A.; Pancino, E.; Nardini, E. +12 more
All cosmological models of structure formation predict the existence of a widespread population of dual supermassive black holes in-spiralling inside their common host galaxy, eventually merging and giving rise to intense gravitational waves. These systems can be identified as dual active galactic nuclei (AGNs) at kiloparsec separations, but only …
A pair of sub-Neptunes transiting the bright K-dwarf TOI-1064 characterized with CHEOPS
Lester, Kathryn V.; Charnoz, Sébastien; Triaud, Amaury H. M. J. +132 more
We report the discovery and characterization of a pair of sub-Neptunes transiting the bright K-dwarf TOI-1064 (TIC 79748331), initially detected in the Transiting Exoplanet Survey Satellite (TESS) photometry. To characterize the system, we performed and retrieved the CHaracterising ExOPlanets Satellite (CHEOPS), TESS, and ground-based photometry, …
The population of hot subdwarf stars studied with Gaia. IV. Catalogues of hot subluminous stars based on Gaia EDR3
Geier, S.; Pelisoli, I.; Culpan, R. +3 more
In light of substantial new discoveries of hot subdwarfs by ongoing spectroscopic surveys and the availability of the Gaia mission Early Data Release 3 (EDR3), we compiled new releases of two catalogues of hot subluminous stars: The data release 3 (DR3) catalogue of the known hot subdwarf stars contains 6616 unique sources and provides multi-band …