Search Publications
A tale of two DIGs: The relative role of H II regions and low-mass hot evolved stars in powering the diffuse ionised gas (DIG) in PHANGS-MUSE galaxies
Boquien, M.; Chevance, M.; Kruijssen, J. M. Diederik +17 more
We use integral field spectroscopy from the PHANGS-MUSE survey, which resolves the ionised interstellar medium structure at ∼50 pc resolution in 19 nearby spiral galaxies, to study the origin of the diffuse ionised gas (DIG). We examine the physical conditions of the diffuse gas by first removing morphologically defined H II regions and then binni…
The GALAH Survey: chemical tagging and chrono-chemodynamics of accreted halo stars with GALAH+ DR3 and Gaia eDR3
Lewis, Geraint F.; Ting, Yuan-Sen; Feuillet, Diane K. +27 more
Since the advent of Gaia astrometry, it is possible to identify massive accreted systems within the Galaxy through their unique dynamical signatures. One such system, Gaia-Sausage-Enceladus (GSE), appears to be an early 'building block' given its virial mass $\gt 10^{10}\, \mathrm{M_\odot }$ at infall (z ~ 1-3). In order to separate the progenitor…
Structural parameters of 389 local open clusters
Miret-Roig, N.; Castro-Ginard, A.; Casamiquela, L. +4 more
Context. The distribution of member stars in the surroundings of an open cluster (OC) can shed light on the process of its formation, evolution, and dissolution. The analysis of structural parameters of OCs as a function of their age and position in the Galaxy constrains theoretical models of cluster evolution. The Gaia catalog is very appropriate…
S 5: The Orbital and Chemical Properties of One Dozen Stellar Streams
Lewis, Geraint F.; Erkal, Denis; Bland-Hawthorn, Joss +18 more
We report the kinematic, orbital, and chemical properties of 12 stellar streams with no evident progenitors using line-of-sight velocities and metallicities from the Southern Stellar Stream Spectroscopic Survey (S 5), proper motions from Gaia EDR3, and distances derived from distance tracers or the literature. This data set provides the…
Gaia Early Data Release 3. The celestial reference frame (Gaia-CRF3)
Prusti, T.; Mazeh, T.; Zucker, S. +448 more
Context. Gaia-CRF3 is the celestial reference frame for positions and proper motions in the third release of data from the Gaia mission, Gaia DR3 (and for the early third release, Gaia EDR3, which contains identical astrometric results). The reference frame is defined by the positions and proper motions at epoch 2016.0 for a specific set of extrag…
The COS Legacy Archive Spectroscopy Survey (CLASSY) Treasury Atlas
Ouchi, Masami; Kewley, Lisa J.; Ravindranath, Swara +46 more
Far-ultraviolet (FUV; ~1200-2000 Å) spectra are fundamental to our understanding of star-forming galaxies, providing a unique window on massive stellar populations, chemical evolution, feedback processes, and reionization. The launch of the James Webb Space Telescope will soon usher in a new era, pushing the UV spectroscopic frontier to higher red…
A stringent upper limit on dark matter self-interaction cross-section from cluster strong lensing
Andrade, Kevin E.; Fuson, Jackson; Gad-Nasr, Sophia +4 more
We analyse strongly lensed images in eight galaxy clusters to measure their dark matter density profiles in the radial region between 10 kpc and 150 kpc, and use this to constrain the self-interaction cross-section of dark matter (DM) particles. We infer the mass profiles of the central DM haloes, bright central galaxies, key member galaxies, and …
GOODS-ALMA 2.0: Source catalog, number counts, and prevailing compact sizes in 1.1 mm galaxies
Magnelli, B.; Daddi, E.; Elbaz, D. +35 more
Submillimeter/millimeter observations of dusty star-forming galaxies with the Atacama Large Millimeter/submillimeter Array (ALMA) have shown that dust continuum emission generally occurs in compact regions smaller than the stellar distribution. However, it remains to be understood how systematic these findings are. Studies often lack homogeneity i…
ALMA chemical survey of disk-outflow sources in Taurus (ALMA-DOT). VI. Accretion shocks in the disk of DG Tau and HL Tau
Podio, L.; Bacciotti, F.; Fedele, D. +9 more
Planet-forming disks are not isolated systems. Their interaction with the surrounding medium affects their mass budget and chemical content. In the context of the ALMA-DOT program, we obtained high-resolution maps of assorted lines from six disks that are still partly embedded in their natal envelope. In this work, we examine the SO and SO2
Supermassive black holes at high redshift are expected to be obscured by their massive host galaxies' interstellar medium
Pozzi, F.; Vignali, C.; Gilli, R. +12 more
We combine results from deep ALMA observations of massive (M* > 1010 M⊙) galaxies at different redshifts to show that the column density of their interstellar medium (ISM) rapidly increases toward early cosmic epochs. Our analysis includes objects from the ASPECS and ALPINE large programs, as well as individual …