Search Publications
Reflections on nebulae around young stars. A systematic search for late-stage infall of material onto Class II disks
Ginski, C.; Testi, L.; Williams, J. P. +10 more
Context. While it is generally assumed that Class II sources evolve largely in isolation from their environment, many still lie close to molecular clouds and may continue to interact with them. This may result in late accretion of material onto the disk that can significantly influence disk processes and planet formation.
Aims: In order to sy…
Morphology-density relation, quenching, and mergers in CARLA clusters and protoclusters at 1.4 < z < 2.8
Noirot, Gaël; Gonzalez, Anthony H.; Stern, Daniel +11 more
At redshifts of z ≲ 1.3, early-type galaxies (ETGs) and passive galaxies are mainly found in dense environments, such as galaxy clusters. However, it remains unclear whether these well-known morphology-density and passive-density relations have already been established at higher redshifts. To address this question, we performed an in-depth study o…
Gaia Data Release 3. GRVS photometry from the RVS spectra
Smith, M.; Caffau, E.; Jordi, C. +38 more
Context.Gaia Data Release 3 (DR3) contains the first release of magnitudes estimated from the integration of Radial Velocity Spectrometer (RVS) spectra for a sample of about 32.2 million stars brighter than GRVS ∼ 14 mag (or G ∼ 15 mag).
Aims: In this paper, we describe the data used and the approach adopted to derive and validate …
JWST Observations of Young protoStars (JOYS). Outflows and accretion in the high-mass star-forming region IRAS 23385+6053
Henning, T.; Östlin, G.; Güdel, M. +21 more
Context. Understanding the earliest stages of star formation, and setting it in the context of the general cycle of matter in the interstellar medium, is a central aspect of research with the James Webb Space Telescope (JWST).
Aims: The JWST program JOYS (JWST Observations of Young protoStars) aims to characterize the physical and chemical pr…
Evolved massive stars at low-metallicity. V. Mass-loss rate of red supergiant stars in the Small Magellanic Cloud
Tian, Hao; Yang, Ming; Bonanos, Alceste Z. +17 more
The mass-loss rate (MLR) is one of the most important parameters in astrophysics, because it impacts many areas of astronomy, such as ionizing radiation, wind feedback, star-formation rates, initial mass functions, stellar remnants, supernovae, and so on. However, the most important modes of mass loss are also the most uncertain, as the dominant p…
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…