Search Publications
JWST's TEMPLATES for Star Formation: The First Resolved Gas-phase Metallicity Maps of Dust-obscured Star-forming Galaxies at z ∼ 4
Hutchison, Taylor A.; Mahler, Guillaume; Rigby, Jane R. +23 more
We present the first spatially resolved maps of gas-phase metallicity for two dust-obscured star-forming galaxies at z ~ 4, from the JWST TEMPLATES Early Release Science program, derived from NIRSpec integral field unit spectroscopy of the Hα and [N II] emission lines. Empirical optical line calibrations are used to determine that the sources are …
Reconstruction of asteroid spin states from Gaia DR3 photometry
Hanuš, J.; Ďurech, J.
Aims: Gaia Data Release 3 contains accurate photometric observations of more than 150 000 asteroids covering a time interval of 34 months. With a total of about 3 000 000 measurements, a typical number of observations per asteroid ranges from a few to several tens. We aimed to reconstruct the spin states and shapes of asteroids from this data…
Near-infrared emission line diagnostics for AGN from the local Universe to z ∼ 3
Papovich, Casey; Finkelstein, Steven L.; Buat, Véronique +35 more
Optical rest-frame spectroscopic diagnostics are usually employed to distinguish between star formation and active galactic nucleus (AGN) powered emission. However, this method is biased against dusty sources, hampering a complete census of the AGN population across cosmic epochs. To mitigate this effect, it is crucial to observe at longer wavelen…
A super-massive Neptune-sized planet
Schlieder, Joshua E.; Howell, Steve B.; Cubillos, Patricio E. +54 more
Neptune-sized planets exhibit a wide range of compositions and densities, depending on factors related to their formation and evolution history, such as the distance from their host stars and atmospheric escape processes. They can vary from relatively low-density planets with thick hydrogen-helium atmospheres1,2 to higher-density planet…
Dynamical Evolution of White Dwarfs in Triples in the Era of Gaia
Angelo, Isabel; Naoz, Smadar; Hansen, Bradley M. S. +3 more
The Gaia mission has detected many white dwarfs (WDs) in binary and triple configurations, and while observations suggest that triple-stellar systems are common in our Galaxy, not much attention was devoted to WDs in triples. For stability reasons, these triples must have hierarchical configurations, i.e., two stars are on a tight orbit (the inner…
Evidence for a Massive Andromeda Galaxy Using Satellite Galaxy Proper Motions
Patel, Ekta; Mandel, Kaisey S.
We present new mass estimates for Andromeda (M31) using the orbital angular momenta of four satellite galaxies (M33, NGC 185, NGC 147, and IC 10) derived from existing proper motions, distances, and line-of-sight velocities. We infer two masses for M31: ${M}_{\mathrm{vir}}={2.85}_{-0.77}^{+1.47}\times {10}^{12}\,{M}_{\odot }$ using satellite galax…
Fast Radio Bursts as Probes of Magnetic Fields in Galaxies at z < 0.5
Simha, Sunil; Prochaska, J. Xavier; Rafelski, Marc +6 more
We present a sample of nine fast radio bursts (FRBs) from which we derive magnetic field strengths of the host galaxies represented by normal, z < 0.5 star-forming galaxies with stellar masses M * ≈ 108-1010.5 M ⊙. We find no correlation between the FRB rotation measure (RM) and redshift, which indica…
Stepped partially acoustic dark matter: likelihood analysis and cosmological tensions
Marques-Tavares, Gustavo; Buen-Abad, Manuel A.; Chacko, Zackaria +2 more
We generalize the recently proposed Stepped Partially Acoustic Dark Matter (SPartAcous) model by including additional massless degrees of freedom in the dark radiation sector. We fit SPartAcous and its generalization against cosmological precision data from the cosmic microwave background, baryon acoustic oscillations, large-scale structure, super…
Reconstructing the Assembly of Massive Galaxies. II. Galaxies Develop Massive and Dense Stellar Cores as They Evolve and Head toward Quiescence at Cosmic Noon
Giavalisco, Mauro; Ji, Zhiyuan
We use the spectral energy distribution fitting code PROSPECTOR to reconstruct the nonparametric star formation history (SFH) of massive ( $\mathrm{log}{M}_{* }\gt 10.3$ ) star-forming galaxies (SFGs) and quiescent galaxies (QGs) at redshift z obs ~ 2 to investigate the joint evolution of star formation activity and structural propertie…
CONCERTO: Simulating the CO, [CII], and [CI] line emission of galaxies in a 117 deg2 field and the impact of field-to-field variance
Hu, W.; Catalano, A.; Lagache, G. +29 more
In the submillimeter regime, spectral line scans and line intensity mapping (LIM) are new promising probes for the cold gas content and star formation rate of galaxies across cosmic time. However, both of these two measurements suffer from field-to-field variance. We study the effect of field-to-field variance on the predicted CO and [CII] power s…