Search Publications
The Low-Redshift Lyman Continuum Survey. Unveiling the ISM properties of low-z Lyman-continuum emitters
Giavalisco, Mauro; Grazian, Andrea; Pentericci, Laura +24 more
Aims: Combining 66 ultraviolet (UV) spectra and ancillary data from the recent Low-Redshift Lyman Continuum Survey (LzLCS) and 23 LyC observations by earlier studies, we form a statistical sample of star-forming galaxies at z ∼ 0.2 − 0.4 with which we study the role of cold interstellar medium (ISM) gas in the leakage of ionizing radiation. W…
Probing inner and outer disk misalignments in transition disks. Constraints from VLTI/GRAVITY and ALMA observations
Ménard, F.; Henning, T.; Ginski, C. +16 more
Context. Transition disks are protoplanetary disks with dust-depleted cavities, possibly indicating substantial clearing of their dust content by a massive companion. For several known transition disks, dark regions interpreted as shadows have been observed in scattered light imaging and are hypothesized to originate from misalignments between dis…
The Planck clusters in the LOFAR sky. I. LoTSS-DR2: New detections and sample overview
Simionescu, A.; Zhang, X.; Di Gennaro, G. +23 more
Context. Relativistic electrons and magnetic fields permeate the intra-cluster medium (ICM) and manifest themselves as diffuse sources of synchrotron emission observable at radio wavelengths, namely radio halos and radio relics. Although there is broad consensus that the formation of these sources is connected to turbulence and shocks in the ICM, …
Stellar labels for hot stars from low-resolution spectra. I. The HotPayne method and results for 330 000 stars from LAMOST DR6
Xiang, Maosheng; Conroy, Charlie; Ting, Yuan-Sen +9 more
We set out to determine stellar labels from low-resolution survey spectra of hot stars, specifically OBA stars with Teff ≳ 7500 K. This fills a gap in the scientific analysis of large spectroscopic stellar surveys such as LAMOST, which offers spectra for millions of stars at R ~ 1800 and covers 3800 Å ≤ λ ≤ 9000 Å. We first explore the …
COSMOS2020: Cosmic evolution of the stellar-to-halo mass relation for central and satellite galaxies up to z ∼ 5
Sanders, D. B.; Ilbert, O.; Moneti, A. +13 more
We used the COSMOS2020 catalog to measure the stellar-to-halo mass relation (SHMR) divided by central and satellite galaxies from z = 0.2 to z = 5.5. Starting from accurate photometric redshifts, we measured the near-infrared selected two-point angular correlation and stellar mass functions in ten redshift bins. We used a phenomenological model th…
The diverse cold molecular gas contents, morphologies, and kinematics of type-2 quasars as seen by ALMA
Tadhunter, C. N.; Feruglio, C.; García-Burillo, S. +8 more
We present CO(2−1) and adjacent continuum observations of seven nearby radio-quiet type-2 quasars (QSO2s) obtained with ALMA at ∼0.2″ resolution (370 pc at z ∼ 0.1). These QSO2s are luminous (L[OIII] > 108.5 L⊙ ∼ MB < −23), and their host galaxies massive (M* ∼ 1011 M⊙
Search of strong lens systems in the Dark Energy Survey using convolutional neural networks
Clément, B.; Courbin, F.; Joseph, R. +8 more
We present our search for strong lens, galaxy-scale systems in the first data release of the Dark Energy Survey (DES), based on a color-selected parent sample of 18 745 029 luminous red galaxies (LRGs). We used a convolutional neural network (CNN) to grade this LRG sample with values between 0 (non-lens) and 1 (lens). Our training set of mock lens…
Euclid preparation. XVII. Cosmic Dawn Survey: Spitzer Space Telescope observations of the Euclid deep fields and calibration fields
Cimatti, A.; Sanders, D. B.; Ilbert, O. +195 more
We present a new infrared survey covering the three Euclid deep fields and four other Euclid calibration fields using Spitzer Space Telescope's Infrared Array Camera (IRAC). We combined these new observations with all relevant IRAC archival data of these fields in order to produce the deepest possible mosaics of these regions. In total, these obse…
The quenching of galaxies, bulges, and disks since cosmic noon. A machine learning approach for identifying causality in astronomical data
Maiolino, Roberto; Ellison, Sara L.; Conselice, Christopher J. +4 more
We present an analysis of the quenching of star formation in galaxies, bulges, and disks throughout the bulk of cosmic history, from z = 2 − 0. We utilise observations from the Sloan Digital Sky Survey and the Mapping Nearby Galaxies at Apache Point Observatory survey at low redshifts. We complement these data with observations from the Cosmic Ass…
Strong Lyman continuum emitting galaxies show intense C IV λ1550 emission
Chisholm, J.; Schaerer, D.; Ravindranath, S. +7 more
Using the Space Telescope Imaging Spectrograph, we have obtained ultraviolet spectra from ∼1200 to 2000 Å of known Lyman continuum (LyC) emitting galaxies at low redshift (z ∼ 0.3 − 0.4) with varying absolute LyC escape fractions (fesc ∼ 0.01 − 0.72). Our observations include in particular the galaxy J1243+4646, which has the highest kn…