J. Trevor Mendel

The Blue Jay survey: Deep JWST spectroscopy for a representative sample of galaxies at cosmic noon

Sirio Belli, Minjung Park, J. Trevor Mendel, R. L. Davies et autres

We present the Blue Jay survey, a cycle 1 JWST program aimed at studying the stellar and gas content of galaxies at cosmic noon. The survey consists of deep spectroscopy for 153 targets observed over two pointings in the COSMOS field using …

it, gb, us, au (code pays fourni par la source)

Evolution of gas velocity dispersion in discs from z ∼ 8 to z ∼ 0.5

Emily Wisnioski, J. Trevor Mendel, Ryan Leaman, Takafumi Tsukui et autres

ABSTRACT Together, optical/near-infrared integral field spectroscopy and resolved submillimetre interferometry data have mapped the ionized and molecular gas motions in nearly a thousand galaxies at redshifts $z>0.5$. While these measurements have revealed a number of key properties about the evolution of disc …

au, at, gb, de (code pays fourni par la source)

The molecular gas content throughout the low-z merger sequence

M. Sargent, Sara L. Ellison, J. Trevor Mendel, A. Saintonge et autres

Exploiting IRAM 30 m CO spectroscopy, we find that SDSS post-merger galaxies display gas fractions and depletion times enhanced by 25-50%, a mildly increased CO excitation, and standard molecular-to-atomic gas ratios, compared to non-interacting galaxies with similar redshift, stellar mass ( M …

us (code pays fourni par la source)

Active Galactic Nucleus Feedback in Quiescent Galaxies at Cosmic Noon Traced by Ionized Gas Emission

Letizia Bugiani, Sirio Belli, Minjung Park, R. L. Davies et autres

Abstract We analyze ionized gas emission lines in deep rest-frame optical spectra of 14 massive ( log M * > 10.2 M ⊙ ) quiescent galaxies at redshifts 1.7 < z < 3.5 observed with JWST/NIRSpec by the Blue Jay survey. Robust …

The MAGPI Survey: the subtle role of environment and not-so-subtle impact of generations of stars on galaxy dynamics

Caroline Foster, Sabine Bellstedt, Francesco D’Eugenio, Adriano Poci et autres

The stellar age and mass of galaxies have been suggested as the primary determinants for the dynamical state of galaxies, with environment seemingly playing no or only a very minor role. We use a sample of 77 galaxies at intermediate redshift (z~0.3) …

The MAGPI Survey: Insights into the Lyman-alpha line widths and the size of ionized bubbles at the edge of cosmic reionization

Tapan K. Mukherjee, Tayyaba Zafar, Themiya Nanayakkara, Anshu Gupta et autres

We present spectroscopic properties of 22 Lyman-alpha emitters(LAEs) at z=5.5-6.6 with Lyman-alpha(Lya) luminosity log($L_{Lya}$[$ergs^{-1}$])=42.4-43.5, obtained using VLT/MUSE as part of the Middle Ages Galaxy Properties with Integral Field Spectroscopy(MAGPI) survey. Additionally, we incorporate broad-band photometric data from the Subaru Hyper Suprime-Cam(HSC) for …

The molecular gas content throughout the low-z merger sequence

M. Sargent, Sara L. Ellison, J. Trevor Mendel, A. Saintonge et autres

Exploiting IRAM 30m CO spectroscopy, we find that SDSS post-merger galaxies display gas fractions and depletion times enhanced by 25-50%, a mildly higher CO excitation, and standard molecular-to-atomic gas ratios, compared to non-interacting galaxies with similar redshift, stellar mass ($M_{\star}$) and star-formation …

The MAGPI Survey: the evolution and drivers of gas turbulence in intermediate-redshift galaxies

Yifan Mai, S. M. Croom, Emily Wisnioski, Sam P Vaughan et autres

We measure the ionised gas velocity dispersions of star-forming galaxies in the MAGPI survey ($z\sim0.3$) and compare them with galaxies in the SAMI ($z\sim0.05$) and KROSS ($z\sim1$) surveys to investigate how the ionised gas velocity dispersion evolves. For the first time, we …

The MAGPI Survey: Evidence Against the Bulge-Halo Conspiracy

Caro Derkenne, Richard M. McDermid, Giulia Santucci, Adriano Poci et autres

Studies of the internal mass structure of galaxies have observed a `conspiracy' between the dark matter and stellar components, with total (stars $+$ dark) density profiles showing remarkable regularity and low intrinsic scatter across various samples of galaxies at different redshifts. Such …

The MAGPI survey: evidence against the bulge–halo conspiracy

Caro Derkenne, Richard M. McDermid, Giulia Santucci, Adriano Poci et autres

ABSTRACT Studies of the internal mass structure of galaxies have observed a ‘conspiracy’ between the dark matter and stellar components, with total (stars$+$dark) density profiles showing remarkable regularity and low intrinsic scatter across various samples of galaxies at different redshifts. Such homogeneity …

au, gb, at, de (code pays fourni par la source)

The MAGPI survey: The interdependence of the mass, star formation rate, and metallicity in galaxies at z ∼ 0.3

M. Koller, B. Ziegler, B. I. Ciocan, Sabine Thater et autres

Aims. Star formation rates (SFRs), gas-phase metallicities, and stellar masses are crucial for studying galaxy evolution. The different relations resulting from these properties give insights into the complex interplay of gas inside galaxies and their evolutionary trajectory and current characteristics. We aim …

at, fr, au, pt, de, it, Afrique du Sud (code pays fourni par la source)

AGN Feedback in Quiescent Galaxies at Cosmic Noon Traced by Ionized Gas Emission

Letizia Bugiani, Sirio Belli, Minjung Park, R. L. Davies et autres

We analyze ionized gas emission lines in deep rest-frame optical spectra of 16 quiescent galaxies at redshift $1.7