Search Publications
A Parsec-scale Catalog of Molecular Clouds in the Solar Neighborhood Based on 3D Dust Mapping: Implications for the Mass-Size Relation
Alves, João; Zucker, Catherine; Goodman, Alyssa +2 more
We dendrogram the Leike et al. 3D dust map, leveraging its ~1 pc spatial resolution to produce a uniform catalog of molecular clouds in the solar neighborhood. Using accurate distances, we measure the properties of 65 clouds in true 3D space, eliminating much of the uncertainty in mass, size, and density. Clouds in the catalog contain a total of 1…
The GAPS Programme at TNG. LV. Multiple molecular species in the atmosphere of HAT-P-11 b and review of the HAT-P-11 planetary system
Scandariato, G.; Poretti, E.; Sozzetti, A. +29 more
Context. The atmospheric characterisation of hot and warm Neptune-size exoplanets is challenging mainly due to their relatively small radius and atmospheric scale height, which reduce the amplitude of atmospheric spectral features. The warm-Neptune HAT-P-11 b is a remarkable target for atmospheric characterisation because of the large brightness o…
Early Results from GLASS-JWST. XXIV. The Mass-Metallicity Relation in Lensed Field Galaxies at Cosmic Noon with NIRISS
Santini, Paola; Castellano, Marco; Fontana, Adriano +20 more
We present a measurement of the mass-metallicity relation (MZR) at Cosmic Noon, using the JWST near-infrared wide-field slitless spectroscopy obtained by the GLASS-JWST Early Release Science program. By combining the power of JWST and the lensing magnification by the foreground cluster A2744, we extend the measurements of the MZR to the dwarf mass…
New bounds on light millicharged particles from the tip of the red-giant branch
Vincent, Aaron C.; Schutz, Katelin; Fung, Audrey +3 more
Stellar energy loss is a sensitive probe of light, weakly coupled dark sectors, including ones containing millicharged particles (MCPs). The emission of MCPs can affect stellar evolution and therefore can alter the observed properties of stellar populations. In this work, we improve upon the accuracy of existing stellar limits on MCPs by self-cons…
EPOCHS Paper V. The dependence of galaxy formation on galaxy structure at z < 7 from JWST observations
Conselice, Christopher J.; Bluck, Asa F. L.; Li, Qiong +11 more
We measure the broad impact of galaxy structure on galaxy formation by examining the ongoing star formation and integrated star formation history as revealed through the stellar masses of galaxies at z < 7 based on JWST CEERS data from the Extended Groth Strip (EGS). Using the morphological catalog of 3965 visually classified JWST galaxies from…
The MUSE Ultra Deep Field (MUDF). V. Characterizing the Mass–Metallicity Relation for Low-mass Galaxies at z ∼ 1–2
Papovich, Casey; Henry, Alaina; Rafelski, Marc +13 more
Using more than 100 galaxies in the MUSE Ultra Deep Field with spectroscopy from the Hubble Space Telescope's (HST) Wide Field Camera 3 and the Very Large Telescope's Multi Unit Spectroscopic Explorer, we extend the gas-phase mass–metallicity relation (MZR) at z ≈ 1–2 down to stellar masses of M ⋆ ≈ 107.5 M ⊙. The …
MgAl burning chain in ω Centauri
Ventura, Paolo; Mucciarelli, Alessio; Bellazzini, Michele +2 more
In this study, we report the results of the analysis of Fe, Mg, Al, and Si abundances analysis for a sample of 439 stars in ω Centauri, using high-resolution spectra obtained with the VLT/FLAMES multi-object spectrograph. Our analysis reveals the presence of four distinct Fe populations, with the main peak occurring at a low metallicity, consisten…
JWST lensed quasar dark matter survey - II. Strongest gravitational lensing limit on the dark matter free streaming length to date
Djorgovski, S. G.; Stern, D.; Treu, T. +20 more
This is the second in a series of papers in which we use JWST Mid Infrared Instrument multiband imaging to measure the warm dust emission in a sample of 31 multiply imaged quasars, to be used as a probe of the particle nature of dark matter. We present measurements of the relative magnifications of the strongly lensed warm dust emission in a sampl…
The Sydney Radio Star Catalogue: Properties of radio stars at megahertz to gigahertz frequencies
Stelzer, Beate; Das, Barnali; Pope, Benjamin J. S. +13 more
We present the Sydney Radio Star Catalogue, a new catalogue of stars detected at megahertz to gigahertz radio frequencies. It consists of 839 unique stars with 3 405 radio detections, more than doubling the previously known number of radio stars. We have included stars from large area searches for radio stars found using circular polarisation sear…
Discovery of a Metal-poor Red Giant Star with the Highest Ultralithium Enhancement
Beers, Timothy C.; Placco, Vinicius M.; Hansen, Terese T. +10 more
We present the discovery of 2MASS J05241392‑0336543 (hereafter J0524‑0336), a very metal-poor ([Fe/H] = ‑2.43 ± 0.16), highly r-process-enhanced ([Eu/Fe] = +1.34 ± 0.10) Milky Way halo field red giant star, with an ultrahigh Li abundance of A(Li, 3D, NLTE) = 6.15 ± 0.25 and [Li/Fe] = +7.64 ± 0.25, respectively. This makes J0524‑0336 the most lithi…