Search Publications
Structure and kinematics of a massive galaxy at z ∼ 7
Bouwens, R. J.; Aravena, M.; Díaz-Santos, T. +9 more
Context. Observations of the rest-frame UV emission of high-redshift galaxies suggest that the early stages of galaxy formation involve disturbed structures. Imaging the cold interstellar medium (ISM) can provide a unique view of the kinematics associated with the assembly of galaxies.
Aims: In this paper, we analyze the spatial distribution …
Gaia Data Release 3. Validating the classification of variable young stellar object candidates
Gavras, Panagiotis; Ábrahám, Péter; Kóspál, Ágnes +14 more
Context. The Gaia third Data Release (DR3) presents the first catalogue of full-sky variable young stellar object (YSO) candidates observed by the Gaia space telescope during the initial 34 months of science operations.
Aims: Numerous types of variable stars were classified using photometric data collected by Gaia. One of the new classes pres…
JWST CEERS probes the role of stellar mass and morphology in obscuring galaxies
Papovich, Casey; Finkelstein, Steven L.; Buat, Véronique +38 more
In recent years, observations have uncovered a population of massive galaxies that are invisible or very faint in deep optical/near-infrared (near-IR) surveys but brighter at longer wavelengths. However, the nature of these optically dark or faint galaxies (OFGs; one of several names given to these objects) is highly uncertain. In this work, we in…
Cold gas disks in main-sequence galaxies at cosmic noon: Low turbulence, flat rotation curves, and disk-halo degeneracy
Zhang, Zhi-Yu; Lelli, Federico; Bisbas, Thomas G. +6 more
We study the dynamics of cold molecular gas in two main-sequence galaxies at cosmic noon (zC-488879 at z ≃ 1.47 and zC-400569 at z ≃ 2.24) using new high-resolution ALMA observations of multiple 12CO transitions. For zC-400569 we also reanalyze high-quality Hα data from the SINS/zC-SINF survey. We find that (1) both galaxies have regula…
The phase spiral in Gaia DR3
Katz, D.; Antoja, T.; Bernet, M. +3 more
Aims: We aim to study the phase spiral in the Milky Way (MW) disc with data from the third data release of Gaia (DR3) and use it as an inference tool to decipher the late-time evolution of the Galaxy.
Methods: We used an edge-detection algorithm to find the border of the phase spiral, allowing us to robustly quantify its shape at differe…
The massive relic galaxy NGC 1277 is dark matter deficient. From dynamical models of integral-field stellar kinematics out to five effective radii
Trujillo, Ignacio; Cappellari, Michele; Buitrago, Fernando +7 more
According to the Λ cold dark matter (ΛCDM) cosmology, present-day galaxies with stellar masses M⋆ > 1011 M⊙ should contain a sizable fraction of dark matter within their stellar body. Models indicate that in massive early-type galaxies (ETGs) with M⋆ ≈ 1.5 × 1011 M⊙, dark matter …
Gaia Data Release 3. Reflectance spectra of Solar System small bodies
Prusti, T.; Mazeh, T.; Zucker, S. +444 more
Context. The Gaia mission of the European Space Agency (ESA) has been routinely observing Solar System objects (SSOs) since the beginning of its operations in August 2014. The Gaia data release three (DR3) includes, for the first time, the mean reflectance spectra of a selected sample of 60 518 SSOs, primarily asteroids, observed between August 5,…
Supermassive Black Hole Winds in X-rays: SUBWAYS. I. Ultra-fast outflows in quasars beyond the local Universe
Maiolino, R.; Merloni, A.; Fiore, F. +49 more
We present a new X-ray spectroscopic study of 22 luminous (2 × 1045 ≲ Lbol/erg s−1 ≲ 2 × 1046) active galactic nuclei (AGNs) at intermediate redshifts (0.1 ≲ z ≲ 0.4), as part of the SUpermassive Black hole Winds in the x-rAYS (SUBWAYS) sample, mostly composed of quasars and type 1 AGNs. Here, 17 targets…
An updated measurement of the Hubble constant from near-infrared observations of Type Ia supernovae
Leibundgut, B.; Galbany, L.; Dhawan, S. +12 more
We present a measurement of the Hubble constant (H0) using type Ia supernovae (SNe Ia) in the near-infrared (NIR) from the recently updated sample of SNe Ia in nearby galaxies with distances measured via Cepheid period-luminosity relations by the SH0ES project. We collected public near-infrared photometry of up to 19 calibrator SNe Ia a…
A state-of-the-art strong-lensing model of MACS J0416.1−2403 with the largest sample of spectroscopic multiple images
Grillo, C.; Rosati, P.; Vanzella, E. +9 more
The combination of multi-band imaging from the Hubble Space Telescope with Multi-Unit Spectroscopic Explorer integral field spectroscopy, obtained at the Very Large Telescope, has recently driven remarkable progress in strong-lensing (SL) modeling of galaxy clusters. From a few tens of multiple images with photometric redshifts per cluster, a new …