activity
20192026
most citedInvestigating the physical properties of galaxies in the Epoch of Reionization with MIRI/JWST spectroscopy

14 citations · 49 across the 21 of their papers we have counts for

collaborators

26 papers

astro-ph.IM2026

Dust at cosmic dawn: unveiling the onset of dust and obscured star formation at

Hiddo Algera, Tom Bakx, Manuel Aravena +31

Although less than 1 percent of the baryonic mass budget of a galaxy, cosmic dust profoundly alters the multi-wavelength appearance of galaxies across cosmic time. The (sub)millime…

astro-ph.IM2026

The dawn of the first galaxies

Livia Vallini, Tanio Diaz Santos, Belen Alcalde Pampliega +56

Understanding how the first galaxies assembled their stellar mass at cosmic dawn is a central frontier of modern astrophysics. JWST has now revealed an unexpected population of ult…

astro-ph.IM2026

Has JWST Seen Everything? Hunting for "NIRCam-dark" Dusty Star-Forming Galaxies at with ALMA2040

Fengwu Sun, Belén Alcalde Pampliega, Hiddo Algera +21

JWST/NIRCam has recovered the stellar counterparts of many ALMA-detected, formerly HST-dark galaxies, yet ALMA has started identifying dusty star-forming galaxies (DSFGs) at …

astro-ph.GA2026

Cosmic Noon Galaxies in the Hubble Ultra Deep Field with MIRI Wide-Field Slitless Spectroscopy

S. Kendrew, G. Östlin, L. Colina +29

We present results from a survey of the Hubble Ultra-Deep Field using the Wide-Field Slitless Spectroscopic (WFSS) capability of the Mid-Infrared Instrument (MIRI) on JWST, demonst…

astro-ph.GA2026

PRISMS. GHZ1. A standard tale of galaxy evolution with atypical ionizing conditions at

Borja Pérez-Díaz, Marco Castellano, Javier Álvarez-Márquez +33

[Abridged] The first operating years of the James Webb Space Telescope (JWST) have revealed a surprising number of UV-bright objects, many of them characterized by t…

astro-ph.GA2026

The Physical Conditions of Low-Mass Galaxies at z=3.5-7.0 from JWST Spectroscopy: The Behaviour of Spectral Line Ratios with Burstiness

Ryan A. Cooper, Karina I. Caputi, Alessandro Marconi +5

We present a study of the physical conditions of galaxies at redshifts , based on emission-line diagnostics of JWST NIRSpec spectra for 1889 star-forming sources spannin…

astro-ph.GA2026

Euclid: A UV-faint quasar in a highly luminous star-forming host galaxy at

S. Belladitta, R. Decarli, E. Bañados +180

Constraining the co-evolution of supermassive black holes and their host galaxies in the first billion years after the Big Bang is essential for understanding the formation of the…

astro-ph.GA2026

Spatially resolved metallicity and ionization in the merging system Gz9p3 at z=9.3

Arjan Bik, Javier Álvarez-Márquez, Alejandro Crespo Gómez +26

Studying the interstellar medium (ISM) in merging high-redshift galaxies is crucial for understanding early galaxy assembly, star formation, and black hole growth, predicted by hie…

astro-ph.GA2026

Euclid: Scaled-up little red dots and other sources with v-shaped spectral energy distributions at z>4

Euclid Collaboration, A. A. Tumborang, K. I. Caputi +169

Little Red Dots (LRDs) are some the most intriguing galaxy populations recently identified at z>~4 with JWST. They constitute the most extreme class of a more abundant population o…

astro-ph.GA2026

MIDIS: Strong H+[OIII] Line Emitters at

Thomas R. Greve, Steven Gillman, Pierluigi Rinaldi +24

We present a search for strong H+[O III] emitters at in the HUDF using ultra-deep JWST/MIRI F560W imaging from the MIDIS survey. Three galaxies are identified via p…

astro-ph.GA2026

JWST Reveals Two Overmassive Black Hole Candidates in Dwarf Galaxies at z 0.7: Pushing Black Hole Searches into the Dwarf-Galaxy Regime

E. Iani, P. Rinaldi, A. Torralba +35

We report the discovery and characterization of two compact galaxies, Pelias and Neleus, at z ~ 0.71 and z ~ 0.75, identified in MACS J0416.1-2403 and GOODS-North. Both exhibit unu…

astro-ph.GA2026

MIDIS: The identification of deep MIRI-red sources as candidates for extreme Balmer-break and line emitting galaxies at high-z

I. Jermann, G. Brammer, S. Gillman +27

We investigate the detection and nature of 5.6~μm MIRI-red sources in the MIRI Deep Imaging Survey (MIDIS), covering 2.4~arcmin in the Hubble Ultra Deep Field. MIDIS is the dee…

astro-ph.GA2026★ 1 cited

PRISMS. U37126, a very blue, ISM-naked starburst at z=10.255 with nearly 100% Lyman continuum escape fraction

R. Marques-Chaves, J. Álvarez-Márquez, L. Colina +31

We present very deep (~11h) JWST/MIRI low-resolution spectroscopy of the rest-frame optical emission of U37126, a UV-bright (M_UV ~ -20), mildly lensed () galaxy at z=…

astro-ph.GA2026★ 2 cited

Pseudo Little Red Dot: an Active Black Hole Embedded in a Dense and Dusty, Metal-Poor Starburst Galaxy at z=5.96

Karina I. Caputi, Ryan A. Cooper, Pierluigi Rinaldi +3

We present a study of Pseudo-LRD-NOM (Pseudo little red dot with no metal lines), a highly magnified low-mass galaxy behind the lensing cluster Abell 370 at z=5.96. We classify thi…

astro-ph.GA2025

A close look at the black hole masses and hot dusty toruses of the first quasars with MIRI-MRS

Sarah E. I. Bosman, Javier Álvarez-Márquez, Frederick B. Davies +29

The presence of supermassive black holes (SMBHs, ) at remains a puzzle. While their existence appears to require exotic formation or growth proce…

astro-ph.GA2025★ 1 cited

MIDIS: Unveiling the Star Formation History in massive galaxies at with spectro-photometric analysis

M. Annunziatella, P. G. Pérez-González, J. Álvarez-Márquez +23

We investigate the star formation histories (SFHs) of a sample of massive galaxies () in the redshift range . We analyze spectro-photo…

astro-ph.GA2025★ 4 cited

Spatially resolved H emission in B14-65666: compact starbursts, ionizing efficiency and gas kinematics in an advanced merger at the Epoch of Reionization

C. Prieto-Jiménez, J. Álvarez-Márquez, L. Colina +28

We present MIRI/JWST medium resolution spectroscopy (MRS) and imaging (MIRIM) of B14-65666, a Lyman-break and interacting galaxy at redshift =7.15. We detect the H line emiss…

astro-ph.GA2025

Deciphering the Nature of Virgil: An Obscured AGN Lurking Within an Apparently Normal Lyman-α Emitter During Cosmic Reionization

Pierluigi Rinaldi, Pablo G. Pérez-González, George H. Rieke +46

We present a comprehensive analysis of the MIRI Extremely Red Object Virgil, a Lyman- emitter at with the photometric properties of a Little Red D…

astro-ph.GA2025★ 3 cited

The rise of the galactic empire: luminosity functions at and estimated with the MIDISNGDEEP ultra-deep JWST/NIRCam dataset

Pablo G. Pérez-González, Göran Östlin, Luca Costantin +39

We present a sample of six F200W and three F277W dropout sources identified as galaxy candidates using the deepest JWST/NIRCam data to date (5 depths mag at…

astro-ph.GA2025★ 11 cited

The CatSouth Quasar Candidate Catalog for the Southern Sky and a Unified All-Sky Catalog Based on Gaia DR3

Yuming Fu, Xue-Bing Wu, R. J. Bouwens +12

The Gaia DR3 has provided a large sample of more than 6.6 million quasar candidates with high completeness but low purity. Previous work on the CatNorth quasar candidate catalog ha…

astro-ph.GA2025★ 1 cited

High-velocity outflows in [OIII] emitters at z=2.5-9 from JWST NIRSpec medium-resolution spectroscopy

Ryan A. Cooper, Karina I. Caputi, Edoardo Iani +3

We identify galaxies hosting ionised-gas high-velocity outflows from the complete sample of medium resolution (R1000) JWST/NIRSpec MSA spectroscopy taken as part of the JWST Advanc…

astro-ph.GA2024★ 1 cited

Not Just a Dot: the complex UV morphology and underlying properties of Little Red Dots

P. Rinaldi, N. Bonaventura, G. H. Rieke +31

We analyze 99 photometrically selected Little Red Dots (LRDs) at in the GOODS fields, leveraging ultra-deep JADES NIRCam short-wavelength (SW) data. We examine the…

astro-ph.GA2024

Burstiness in low stellar-mass Ha emitters at z~2 and z~4-6 from JWST medium band photometry in GOODS-S

R. Navarro-Carrera, P. Rinaldi, K. I. Caputi +4

We analyze a sample of 4500 photometrically-selected Ha emitter galaxies at redshifts z~2 and z~4-6 selected from James Webb Space Telescope (JWST) Near-Infrared Camera (NIRCam) me…

astro-ph.GA2024★ 10 cited

MIDIS. Near-infrared rest-frame morphology of massive galaxies at in the Hubble eXtreme Deep Field

L. Costantin, S. Gillman, L. A. Boogaard +29

Thanks to decades of observations using the Hubble Space Telescope (HST), the structure of galaxies at redshift has been widely studied in the rest-frame ultraviolet regime,…