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View article: SHELLQs-JWST Unveils the Host Galaxies of 12 Quasars at <i>z</i> > 6
SHELLQs-JWST Unveils the Host Galaxies of 12 Quasars at <i>z</i> > 6 Open
The advent of the James Webb Space Telescope (JWST) has opened new horizons in the study of quasar host galaxies during the reionization epoch ( z > 6). Building upon our previous initial measurements of stellar light from two quasar host …
View article: COSMOS-Web: The Overabundance and Physical Nature of “Little Red Dots”—Implications for Early Galaxy and SMBH Assembly
COSMOS-Web: The Overabundance and Physical Nature of “Little Red Dots”—Implications for Early Galaxy and SMBH Assembly Open
JWST has revealed a population of compact and extremely red galaxies at z ≳ 4, which likely host active galactic nuclei (AGNs). We present a sample of 434 “little red dots” (LRDs), selected from the 0.54 deg 2 COSMOS-Web survey. We fit gal…
View article: <i>Euclid</i> : Finding strong gravitational lenses in the early release observations using convolutional neural networks
<i>Euclid</i> : Finding strong gravitational lenses in the early release observations using convolutional neural networks Open
Several new galaxy-galaxy strong gravitational lenses have been detected in the early release observations (ERO) from Euclid . The all-sky survey is expected to find 170 000 new systems, which are expected to greatly enhancing studies of d…
View article: Euclid Quick Data Release (Q1). The strong-lensing discovery engine B. Early strong-lens candidates from the visual inspection of galaxies with a high-velocity dispersion
Euclid Quick Data Release (Q1). The strong-lensing discovery engine B. Early strong-lens candidates from the visual inspection of galaxies with a high-velocity dispersion Open
We present a search for strong gravitational lenses in Euclid imaging with a high stellar velocity dispersion (sigmav>180,̨ms) reported by SDSS and DESI. We performed expert visual inspection and classification of $11,660$ Euclid images. We…
View article: <i>Euclid</i>: the potential of slitless infrared spectroscopy: a <i>z</i> = 5.4 quasar and new ultracool dwarfs
<i>Euclid</i>: the potential of slitless infrared spectroscopy: a <i>z</i> = 5.4 quasar and new ultracool dwarfs Open
We demonstrate the potential of Euclid ’s slitless spectroscopy to discover high-redshift ($z>5$) quasars and their main photometric contaminant, ultracool dwarfs. Sensitive infrared spectroscopy from space is able to efficiently identi…
View article: SHELLQs-JWST perspective on the intrinsic mass relation between supermassive black holes and their host galaxies at z > 6
SHELLQs-JWST perspective on the intrinsic mass relation between supermassive black holes and their host galaxies at z > 6 Open
The relation between the masses of supermassive black holes (SMBHs) and their host galaxies encodes information on their mode of growth, especially at the earliest epochs. The James Webb Space Telescope (JWST) has opened such investigation…
View article: HOLISMOKES XVIII: Detecting strongly lensed SNe Ia from time series of multi-band LSST-like imaging data
HOLISMOKES XVIII: Detecting strongly lensed SNe Ia from time series of multi-band LSST-like imaging data Open
Strong gravitationally lensed supernovae (LSNe), though rare, are exceptionally valuable probes for cosmology and astrophysics. Upcoming time-domain surveys like the Vera Rubin Observatory's Legacy Survey of Space and Time (LSST) offer a m…
View article: Euclid Quick Data Release (Q1). The Strong Lensing Discovery Engine C: Finding lenses with machine learning
Euclid Quick Data Release (Q1). The Strong Lensing Discovery Engine C: Finding lenses with machine learning Open
Strong gravitational lensing has the potential to provide a powerful probe of astrophysics and cosmology, but fewer than 1000 strong lenses have been confirmed so far. With a resolution covering a third of the sky, the Euclid telescope wil…
View article: HOLISMOKES
HOLISMOKES Open
We have carried out a systematic search for galaxy-scale lenses exploiting multiband imaging data from the third public data release of the Hyper Suprime-Cam (HSC) survey with the focus on false-positive removal, after applying deep learni…
View article: Optical and near-infrared spectroscopy of quasars at <i>z</i> &gt; 6.5: public data release and composite spectrum
Optical and near-infrared spectroscopy of quasars at <i>z</i> > 6.5: public data release and composite spectrum Open
We present optical and near-infrared (NIR) spectroscopic observations for a sample of 45 quasars at $6.50 < z \le 7.64$ with absolute magnitudes at 1450 Å in the range $-28.82 \le M_{1450} \le -24.13$ and their composite spectrum. The m…
View article: SHELLQs-JWST Unveils the Host Galaxies of 12 Quasars at z>6
SHELLQs-JWST Unveils the Host Galaxies of 12 Quasars at z>6 Open
The advent of JWST has opened new horizons in the study of quasar host galaxies during the reionization epoch (z>6). Building upon our previous initial measurements of stellar light from two quasar host galaxies at these redshifts, we now …
View article: HOLISMOKES
HOLISMOKES Open
In the past, researchers have mostly relied on single-resolution images from individual telescopes to detect gravitational lenses. We present a search for galaxy-scale lenses that, for the first time, combines high-resolution single-band i…
View article: <i>Euclid</i>: Searches for strong gravitational lenses using convolutional neural nets in Early Release Observations of the Perseus field
<i>Euclid</i>: Searches for strong gravitational lenses using convolutional neural nets in Early Release Observations of the Perseus field Open
The Euclid Wide Survey (EWS) is predicted to find approximately 170 000 galaxy-galaxy strong lenses from its lifetime observation of 14 000 deg 2 of the sky. Detecting this many lenses by visual inspection with professional astronomers and…
View article: COSMOS-Web: A history of galaxy migrations over the stellar mass–star formation rate plane
COSMOS-Web: A history of galaxy migrations over the stellar mass–star formation rate plane Open
Context. The stellar mass-star formation rate ( M ⋆ − SFR) plane is an essential diagnostic to separate galaxy populations. However, we still lack a clear picture of how galaxies move within this plane along cosmic time. Aims. This study a…
View article: Going deeper into the dark with COSMOS-Web
Going deeper into the dark with COSMOS-Web Open
We present the first follow-up with JWST of radio-selected near-infrared (NIR)-faint galaxies as part of the COSMOS-Web survey. By selecting galaxies detected at radio frequencies ( S 3 GHz > 11.5 μJy; i.e., S/N > 5) and with faint counter…
View article: Euclid Quick Data Release (Q1) The Strong Lensing Discovery Engine B -- Early strong lens candidates from visual inspection of high velocity dispersion galaxies
Euclid Quick Data Release (Q1) The Strong Lensing Discovery Engine B -- Early strong lens candidates from visual inspection of high velocity dispersion galaxies Open
We present a search for strong gravitational lenses in Euclid imaging with high stellar velocity dispersion ($\sigma_\nu > 180$ km/s) reported by SDSS and DESI. We performed expert visual inspection and classification of $11\,660$ \Euclid …
View article: Euclid Quick Data Release (Q1). The Strong Lensing Discovery Engine E -- Ensemble classification of strong gravitational lenses: lessons for Data Release 1
Euclid Quick Data Release (Q1). The Strong Lensing Discovery Engine E -- Ensemble classification of strong gravitational lenses: lessons for Data Release 1 Open
The Euclid Wide Survey (EWS) is expected to identify of order $100\,000$ galaxy-galaxy strong lenses across $14\,000$deg$^2$. The Euclid Quick Data Release (Q1) of $63.1$deg$^2$ Euclid images provides an excellent opportunity to test our l…
View article: <i>Euclid</i>: The Early Release Observations Lens Search Experiment
<i>Euclid</i>: The Early Release Observations Lens Search Experiment Open
We investigated the ability of the Euclid telescope to detect galaxy-scale gravitational lenses. To do so, we performed a systematic visual inspection of the 0.7 deg 2 Euclid Early Release Observations data towards the Perseus cluster usin…
View article: Euclid: Finding strong gravitational lenses in the Early Release Observations using convolutional neural networks
Euclid: Finding strong gravitational lenses in the Early Release Observations using convolutional neural networks Open
The Early Release Observations (ERO) from Euclid have detected several new galaxy-galaxy strong gravitational lenses, with the all-sky survey expected to find 170,000 new systems, greatly enhancing studies of dark matter, dark energy, and …
View article: <i>Euclid</i>: A complete Einstein ring in NGC 6505
<i>Euclid</i>: A complete Einstein ring in NGC 6505 Open
We report the discovery of a complete Einstein ring around the elliptical galaxy NGC 6505, at z = 0.042. This is the first strong gravitational lens discovered in Euclid and the first in an NGC object from any survey. The combination of th…
View article: SCUBADive. I. JWST+ALMA Analysis of 289 Submillimeter Galaxies in COSMOS-web
SCUBADive. I. JWST+ALMA Analysis of 289 Submillimeter Galaxies in COSMOS-web Open
JWST has enabled detecting and spatially resolving the heavily dust-attenuated stellar populations of submillimeter galaxies, revealing detail that was previously inaccessible. In this work, we construct a sample of 289 submillimeter galax…
View article: The M<sub>BH</sub>–M<sub>∗</sub> Relation up to z ∼ 2 through Decomposition of COSMOS-Web NIRCam Images
The M<sub>BH</sub>–M<sub>∗</sub> Relation up to z ∼ 2 through Decomposition of COSMOS-Web NIRCam Images Open
Our knowledge of relations between supermassive black holes and their host galaxies at z ≳ 1 is still limited, even though being actively sought out to z ∼ 6. Here, we use the high resolution and sensitivity of JWST to measure the host gal…
View article: Accelerating lensed quasar discovery and modeling with physics-informed variational autoencoders
Accelerating lensed quasar discovery and modeling with physics-informed variational autoencoders Open
Strongly lensed quasars provide valuable insights into the rate of cosmic expansion, the distribution of dark matter in foreground deflectors, and the characteristics of quasar hosts. However, detecting them in astronomical images is diffi…
View article: Appendices for the article titled: Accelerating lensed quasars discovery and modeling with physics-informed variational autoencoders
Appendices for the article titled: Accelerating lensed quasars discovery and modeling with physics-informed variational autoencoders Open
Strongly lensed quasars provide valuable insights into the rate of cosmic expansion, the distribution of dark matter in foreground deflectors, and the characteristics of quasar hosts. However, detecting them in astronomical images is diffi…
View article: Behind the dust veil: A panchromatic view of an optically dark galaxy at <i>z</i> = 4.82
Behind the dust veil: A panchromatic view of an optically dark galaxy at <i>z</i> = 4.82 Open
Optically dark dusty star-forming galaxies (DSFGs) play an essential role in massive galaxy formation at early cosmic time; however, their nature remains elusive. Here, we present a detailed case study of all the baryonic components of a z…
View article: Discovery of dual "little red dots" indicates excess clustering on kilo-parsec scales
Discovery of dual "little red dots" indicates excess clustering on kilo-parsec scales Open
``Little Red Dots'' (LRDs) are an abundant high-redshift population newly discovered by the James Webb Space Telescope (JWST). They are characterized by a red color in the rest-frame optical band, compact morphology, and broad Balmer emiss…
View article: A blazar in the epoch of reionization
A blazar in the epoch of reionization Open
Relativistic jets are thought to play a crucial role in the formation and evolution of massive galaxies and supermassive black holes. Blazars, which are quasars with jets aligned along our line of sight, provide insights into the jetted po…
View article: Behind the dust veil: A panchromatic view of an optically dark galaxy at z=4.82
Behind the dust veil: A panchromatic view of an optically dark galaxy at z=4.82 Open
Optically dark dusty star-forming galaxies (DSFGs) play an essential role in massive galaxy formation at early cosmic time, however their nature remains elusive. Here we present a detailed case study of all the baryonic components of a $z=…
View article: Euclid: Searches for strong gravitational lenses using convolutional neural nets in Early Release Observations of the Perseus field
Euclid: Searches for strong gravitational lenses using convolutional neural nets in Early Release Observations of the Perseus field Open
The Euclid Wide Survey (EWS) is predicted to find approximately 170 000 galaxy-galaxy strong lenses from its lifetime observation of 14 000 deg^2 of the sky. Detecting this many lenses by visual inspection with professional astronomers and…
View article: HOLISMOKES
HOLISMOKES Open
We performed a systematic search for strong gravitational lenses using Hyper Suprime-Cam (HSC) imaging data, focusing on galaxy-scale lenses combined with an environment analysis resulting in the identification of lensing clusters. To iden…