Search Publications
Discovery of a Collimated Jet from the Low-luminosity Protostar IRAS 16253‑2429 in a Quiescent Accretion Phase with the JWST
Manoj, P.; Narang, Mayank; Bourke, Tyler L. +36 more
Investigating Protostellar Accretion (IPA) is a JWST Cycle 1 GO program that uses NIRSpec integral field units and MIRI Medium Resolution Spectrograph to obtain 2.9–28 µm spectral cubes of young, deeply embedded protostars with luminosities of 0.2–10,000 L ⊙ and central masses of 0.15–12 M ⊙. In this Letter, we report t…
Statistical analysis of the gravitational anomaly in Gaia wide binaries
Hernandez, X.; Aguayo-Ortiz, A.; Verteletskyi, V. +1 more
The exploration of the low acceleration a < a0 regime, where a0 = 1.2 × 10-10 m s-2 is the acceleration scale of MOND around which gravitational anomalies at galactic scale appear, has recently been extended to the much smaller mass and length scales of local wide binaries thanks to the availability o…
GA-NIFS: NIRSpec reveals evidence for non-circular motions and AGN feedback in GN20
Charlot, Stéphane; Parlanti, Eleonora; Carniani, Stefano +15 more
We present rest-frame optical data of the
Spectroscopic sizing of interstellar icy grains with JWST
Rocha, W. R. M.; Melnick, G. J.; Boogert, A. C. A. +22 more
Clouds of gas and dust in the Galaxy are nurseries in which stars and planetary systems are born. During their journey from the diffuse interstellar medium to the protoplanetary disks, molecular solids accumulate on cold dust grains by accretion and surface chemistry. These so-called icy grains will continuously evolve, notably by collision and ag…
Sustained super-Eddington accretion in high-redshift quasars
Lupi, Alessandro; Volonteri, Marta; Colpi, Monica +2 more
Observations of z ≳ 6 quasars provide information on the early evolution of the most massive black holes (MBHs) and galaxies. Current observations, able to trace both gas and stellar properties, reveal a population of MBHs that is significantly more massive than expected from the local MBH-stellar mass relation. The population lies on, but mostly …
The ALMA REBELS survey: obscured star formation in massive Lyman-break galaxies at z= 4-8 revealed by the IRX-β and M⋆ relations
Inami, H.; Bowler, R. A. A.; Cullen, F. +23 more
We investigate the degree of dust obscured star formation in 49 massive (log10(M⋆/M⊙) > 9) Lyman-break galaxies (LBGs) at z = 6.5-8 observed as part of the Atacama Large Millimeter/submillimeter Array (ALMA) Reionization Era Bright Emission Line Survey (REBELS) large program. By creating deep stacks of the photo…
JADES: Balmer decrement measurements at redshifts 4 < z < 7
Chevallard, Jacopo; Carniani, Stefano; Übler, Hannah +33 more
We present Balmer decrement, Hα/Hβ, measurements for a sample of 51 galaxies at redshifts z = 4 ‑ 7 observed with the JWST/NIRSpec micro-shutter assembly (MSA), as part of the JWST Advanced Deep Extragalactic Survey (JADES). Leveraging 28-hour long exposures and the efficiency of the prism/clear configuration (but also using information from the m…
The connection between mergers and AGN activity in simulated and observed massive galaxies
Kocevski, Dale D.; Somerville, Rachel S.; Ostriker, Jeremiah P. +9 more
We analyse a suite of 29 high-resolution zoom-in cosmological hydrodynamic simulations of massive galaxies with stellar masses $M_{\rm star} \gt 10^{10.9} \, \mathrm{M}_\odot$, with the goal of better understanding merger activity among active galactic nuclei (AGN), AGN activity in merging systems, SMBH growth during mergers, and the role of gas c…
Modeling of Long-term Afterglow Counterparts to Gravitational Wave Events: The Full View of GRB 170817A
Piro, Luigi; Ryan, Geoffrey; O'Connor, Brendan +3 more
The arrival of gravitational wave astronomy and a growing number of time-domain-focused observatories are set to lead to an increasing number of detections of short gamma-ray bursts (GRBs) launched with a moderate inclination to Earth. Being nearby events, these are also prime candidates for very long-term follow-up campaigns and very long-baselin…
CLASSY. VIII. Exploring the Source of Ionization with UV Interstellar Medium Diagnostics in Local High-z Analogs
Kewley, Lisa J.; Ravindranath, Swara; Wilkins, Stephen M. +27 more
In the current JWST era, rest-frame UV spectra play a crucial role in enhancing our understanding of the interstellar medium (ISM) and stellar properties of the first galaxies in the epoch of reionization (z > 6). Here, we compare well-known and reliable optical diagrams sensitive to the main ionization source (i.e., star formation, SF; active …