A. Feltre
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View article: MARTA: Temperature-temperature relationships and strong-line metallicity calibrations from multiple auroral-line detections at cosmic noon
MARTA: Temperature-temperature relationships and strong-line metallicity calibrations from multiple auroral-line detections at cosmic noon Open
We present the first results from MARTA (Measuring Abundances at high Redshift with the T e Approach), a programme that leverages ultra-deep, medium-resolution JWST/NIRSpec spectroscopy to probe the interstellar medium of star-forming gala…
View article: JWST/NIRSpec Observations of High-ionization Emission Lines in Galaxies at High Redshift
JWST/NIRSpec Observations of High-ionization Emission Lines in Galaxies at High Redshift Open
JWST spectroscopy has built large emission line samples at z ≳ 4, but it has yet to confidently reveal many galaxies with the hard radiation fields commonly associated with active galactic nucleus photoionization. While this may indicate a…
View article: JADES: the chemical enrichment pattern of distant galaxies - silicon depletion and iron enhancement
JADES: the chemical enrichment pattern of distant galaxies - silicon depletion and iron enhancement Open
We present gas-phase abundances of carbon (C), $α$-elements (O, Ne, Si, and Ar) and iron (Fe) obtained from stacked spectra of high-$z$ star-forming galaxies with the deep Near Infrared Spectrograph medium-resolution data from the James We…
View article: M&M33: MUSE and M33 I. Unveiling the Diversity of HII Regions in M33 with MUSE
M&M33: MUSE and M33 I. Unveiling the Diversity of HII Regions in M33 with MUSE Open
We present new VLT/MUSE mosaic observations of a 3 $\times$ 8 arcmin$^2$ area along the southern major axis of the nearby galaxy M33 at a distance of 840 kpc from the Milky Way. These data provide an unprecedented view of the galaxy inters…
View article: An ALMA Band 7 survey of SDSS/<i>Herschel</i> quasars in Stripe 82
An ALMA Band 7 survey of SDSS/<i>Herschel</i> quasars in Stripe 82 Open
Context. Over the past 15 years, studies of quasars in the far-infrared (FIR) have reported host luminosities ranging from 10 12 to 10 14 L ⊙ . These luminosities, often derived from Herschel /SPIRE photometry, suggest star formation rates…
View article: MARTA: The connection between chemical enrichment, feedback, and dust in a Wolf-Rayet galaxy at z${\sim}$2
MARTA: The connection between chemical enrichment, feedback, and dust in a Wolf-Rayet galaxy at z${\sim}$2 Open
We present the analysis of the stellar and interstellar medium (ISM) properties of MARTA-4327, a star-forming galaxy at z=2.224 observed by means of deep JWST/NIRSpec spectroscopy in both medium- and high-resolution gratings as part of the…
View article: Euclid Quick Data Release (Q1). Extending the quest for little red dots to z<4
Euclid Quick Data Release (Q1). Extending the quest for little red dots to z<4 Open
Recent observations with the James Webb Space Telescope (JWST) have revealed an interesting population of sources with a compact morphology and a characteristic v-shaped continuum, namely blue at a rest frame łambda<4000,Å and red at longe…
View article: Euclid Quick Data Release (Q1). The active galaxies of Euclid
Euclid Quick Data Release (Q1). The active galaxies of Euclid Open
We present three catalogues of candidate active galactic nuclei (AGN) in the Euclid Quick Release (Q1) fields. For each Euclid source, we collected multi-wavelength photometric and spectroscopic information from surveys such as the Galaxy …
View article: MIRACLE
MIRACLE Open
We present an analysis of the multi-phase gas properties in the Seyfert II galaxy NGC 424, using spatially resolved spectroscopic data from JWST/MIRI, part of the Mid-InfraRed Activity of Circumnuclear Line Emission (MIRACLE) programme, as…
View article: <i>Euclid</i>: the potential of slitless infrared spectroscopy: a <i>z</i> = 5.4 quasar and new ultracool dwarfs
<i>Euclid</i>: the potential of slitless infrared spectroscopy: a <i>z</i> = 5.4 quasar and new ultracool dwarfs Open
We demonstrate the potential of Euclid ’s slitless spectroscopy to discover high-redshift ($z>5$) quasars and their main photometric contaminant, ultracool dwarfs. Sensitive infrared spectroscopy from space is able to efficiently identi…
View article: MIRACLE II: Unveiling the multi-phase gas interplay in the circumnuclear region of NGC 1365 via multi-cloud modeling
MIRACLE II: Unveiling the multi-phase gas interplay in the circumnuclear region of NGC 1365 via multi-cloud modeling Open
We present a multi-phase study of the gas in the circumnuclear region (~1.1x1.0 kpc^2) of the nearby Seyfert 1.8 galaxy NGC 1365, observed in the context of the Mid-IR Activity of Circumnuclear Line Emission (MIRACLE) program. We combined …
View article: Characterizing the z ≈ 7.66 Type-II AGN candidate SMACS S06355 using BEAGLE-AGN and <i>JWST</i> NIRSpec/NIRCam
Characterizing the z ≈ 7.66 Type-II AGN candidate SMACS S06355 using BEAGLE-AGN and <i>JWST</i> NIRSpec/NIRCam Open
The presence of Active Galactic Nuclei (AGNs) in low mass ($\mathrm{M_{\star }\lesssim 10^{9}}\, \mathrm{M_{\odot }}$) galaxies at high redshift has been established, and it is important to characterize these objects and the impact of thei…
View article: JADES: nitrogen enhancement in high-redshift broad-line active galactic nuclei
JADES: nitrogen enhancement in high-redshift broad-line active galactic nuclei Open
The unexpectedly high nitrogen-to-oxygen (N/O) ratios observed in high-redshift (z) galaxies have challenged our understanding of early star formation. Notably, many of these nitrogen-rich galaxies show signatures of active galactic nuclei…
View article: JWST/NIRSpec Observations of High Ionization Emission Lines in Galaxies at High Redshift
JWST/NIRSpec Observations of High Ionization Emission Lines in Galaxies at High Redshift Open
JWST spectroscopy has built large emission line samples at $z\gtrsim4$, but it has yet to confidently reveal many galaxies with the hard radiation fields commonly associated with AGN photoionization. While this may indicate a weaker UV ion…
View article: Classifying spectra of emission-line regions with neural networks
Classifying spectra of emission-line regions with neural networks Open
Emission-line regions are key to understanding the properties and evolution of galaxies, as they trace the exchange of matter and energy between stars and the interstellar medium (ISM). In nearby galaxies, individual nebulae can be resolve…
View article: Euclid Quick Data Release (Q1). Extending the quest for little red dots to z<4
Euclid Quick Data Release (Q1). Extending the quest for little red dots to z<4 Open
Recent James Webb Space Telescope (JWST) observations have revealed a population of sources with a compact morphology and a characteristic `v-shaped' continuum, namely blue at rest-frame $λ<4000$A and red at longer wavelengths. The nature …
View article: JADES: Nitrogen Enhancement in High-Redshift Broad-Line Active Galactic Nuclei
JADES: Nitrogen Enhancement in High-Redshift Broad-Line Active Galactic Nuclei Open
The unexpectedly high nitrogen-to-oxygen (N/O) ratios observed in high-redshift (z) galaxies have challenged our understanding of early star formation. Notably, many of these nitrogen-rich galaxies show signatures of active galactic nuclei…
View article: Spectroscopic confirmation of a dust-obscured, possibly metal-rich dwarf galaxy at <i>z</i> ∼ 5
Spectroscopic confirmation of a dust-obscured, possibly metal-rich dwarf galaxy at <i>z</i> ∼ 5 Open
We present the first spectroscopic confirmation of a dust-obscured dwarf galaxy, CEERS-14821. The analysis was performed by combining JWST NIRCam broadband photometry and NIRSpec/PRISM spectroscopic data. From the detection of multiple res…
View article: <i>Euclid</i> preparation
<i>Euclid</i> preparation Open
We forecast the expected population of active galactic nuclei (AGN) observable in the Euclid Wide Survey (EWS) and Euclid Deep Survey (EDS). Starting from an X-ray luminosity function (XLF), we generated volume-limited samples of the AGN e…
View article: Spectroscopic confirmation of a dust-obscured, metal-rich dwarf galaxy at z~5
Spectroscopic confirmation of a dust-obscured, metal-rich dwarf galaxy at z~5 Open
We present the first spectroscopic confirmation of a dust-obscured dwarf galaxy, CEERS-14821. The analysis is performed combining JWST NIRCam broad-band photometry and NIRSpec/PRISM spectroscopic data. From the detection of multiple rest-f…
View article: MAMBO: An empirical galaxy and AGN mock catalogue for the exploitation of future surveys
MAMBO: An empirical galaxy and AGN mock catalogue for the exploitation of future surveys Open
Context . Current and future large surveys will produce unprecedented amounts of data. Realistic simulations have become essential for the design and development of these surveys, as well as for the interpretation of the results. Aims . We…
View article: New AGN diagnostic diagrams based on the [OIII]<i>λ</i>4363 auroral line
New AGN diagnostic diagrams based on the [OIII]<i>λ</i>4363 auroral line Open
The James Webb Space Telescope (JWST) is revolutionizing our understanding of black hole formation and growth in the early Universe. However, JWST has also revealed that some of the classical diagnostics, such as the Baldwin, Phillips & Te…
View article: A galactic outflow traced by its extended Mg II emission out to a ∼30 kpc radius in the Hubble Ultra Deep Field with MUSE
A galactic outflow traced by its extended Mg II emission out to a ∼30 kpc radius in the Hubble Ultra Deep Field with MUSE Open
We report the discovery of a rare Mg II λλ 2796, 2803 doublet emission halo around a star-forming galaxy with log( M ⋆ /M ⊙ ) = 10.3 ± 0.3 at z = 0.737 in deep (9.94 h) VLT/MUSE data from the MUSE-HUDF mosaic. While the central region prom…
View article: Euclid preparation. XLIX. Selecting active galactic nuclei using observed colours
Euclid preparation. XLIX. Selecting active galactic nuclei using observed colours Open
Euclid will cover over 14000 $deg^{2}$ with two optical and near-infrared spectro-photometric instruments, and is expected to detect around ten million active galactic nuclei (AGN). This unique data set will make a considerable impact on o…
View article: <i>Euclid</i> preparation
<i>Euclid</i> preparation Open
The Euclid space mission will cover over 14 000 deg 2 with two optical and near-infrared spectro-photometric instruments, and is expected to detect around ten million active galactic nuclei (AGN). This unique data set will make a considera…
View article: A galactic outflow traced by its extended Mg II emission out to a $\sim30$ kpc radius in the Hubble Ultra Deep Field with MUSE
A galactic outflow traced by its extended Mg II emission out to a $\sim30$ kpc radius in the Hubble Ultra Deep Field with MUSE Open
We report the discovery of a rare Mg II $λ$$λ$ 2796, 2803 doublet emission halo around a star forming galaxy with $\log (M_\star$/M$_\odot) = 10.3 \pm 0.3$ at $z=0.737$ in deep (9.94 h) VLT/MUSE data from the MUSE-HUDF mosaic. While the ce…
View article: Disentangling the co-evolution of galaxies and supermassive black holes with PRIMA
Disentangling the co-evolution of galaxies and supermassive black holes with PRIMA Open
The most active phases of star formation and black hole accretion are strongly affected by dust extinction, making far-infrared (FIR) observations the best way to disentangle and study the co-evolution of galaxies and super massive black h…
View article: HOMERUN: A new approach to photoionization modeling
HOMERUN: A new approach to photoionization modeling Open
We present HOMERUN (Highly Optimized Multi-cloud Emission-line Ratios Using photo-ionizatioN), a new approach to modeling emission lines from photoionized gas that can simultaneously reproduce all observed line intensities from a wide rang…
View article: Euclid preparation. Observational expectations for redshift z<7 active galactic nuclei in the Euclid Wide and Deep surveys
Euclid preparation. Observational expectations for redshift z<7 active galactic nuclei in the Euclid Wide and Deep surveys Open
We forecast the expected population of active galactic nuclei (AGN) observable in the Euclid Wide Survey (EWS) and Euclid Deep Survey (EDS). Starting from an X-ray luminosity function (XLF) we generate volume-limited samples of the AGN exp…