The stellar halo in Local Group Hestia simulations III. Chemical abundance relations for accreted and in-situ stars

Posted by klaurent MIT

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Sergey Khoperskov, Ivan Minchev, Noam Libeskind, Vasily Belokurov, Matthias Steinmetz | Summary: Since the chemical abundances of stars are the fossil records of the physical conditions in galaxies, they provide the key information for recovering the assembly history of galaxies. In this work, we explore the chemo-chrono-kinematics […]


Continue.. The stellar halo in Local Group Hestia simulations III. Chemical abundance relations for accreted and in-situ stars

Impact of late-time neutrino emission on the Diffuse Supernova Neutrino Background

Posted by klaurent Tokyo

Kavli Affiliate: Shunsaku Horiuchi | First 5 Authors: Nick Ekanger, Shunsaku Horiuchi, Kei Kotake, Kohsuke Sumiyoshi, | Summary: In the absence of high-statistics supernova neutrino measurements, estimates of the diffuse supernova neutrino background (DSNB) hinge on the precision of simulations of core-collapse supernovae (CCSNe). Understanding the cooling phase of protoneutron star (PNS) evolution ($gtrsim1,{rm s}$ […]


Continue.. Impact of late-time neutrino emission on the Diffuse Supernova Neutrino Background

Impact of late-time neutrino emission on the diffuse supernova neutrino background

Posted by klaurent Tokyo

Kavli Affiliate: Shunsaku Horiuchi | First 5 Authors: Nick Ekanger, Shunsaku Horiuchi, Kei Kotake, Kohsuke Sumiyoshi, | Summary: In the absence of high-statistics supernova neutrino measurements, estimates of the diffuse supernova neutrino background (DSNB) hinge on the precision of simulations of core-collapse supernovae. Understanding the cooling phase of protoneutron star (PNS) evolution ($gtrsim1,{rm s}$ after […]


Continue.. Impact of late-time neutrino emission on the diffuse supernova neutrino background

Testing the Reliability of X-rays as a Tool for Constraining Mass-loss Rates of Hot Stars

Posted by klaurent MIT

Kavli Affiliate: David P. Huenemoerder | First 5 Authors: Sean J. Gunderson, Kenneth G. Gayley, Pragati Pradhan, David P. Huenemoerder, Nathan A. Miller | Summary: We fit a new line shape model to textit{Chandra} X-ray spectra of the O supergiant $zeta$ Puppis to test the robustness of mass-loss rates derived from X-ray wind line profiles […]


Continue.. Testing the Reliability of X-rays as a Tool for Constraining Mass-loss Rates of Hot Stars

Evolution of a Relativistic Outflow and X-ray Corona in the Extreme Changing-Look AGN 1ES 1927+654

Posted by klaurent MIT

Kavli Affiliate: Ronald A. Remillard | First 5 Authors: Megan Masterson, Erin Kara, Claudio Ricci, Javier A. García, Andrew C. Fabian | Summary: 1ES 1927+654 is a paradigm-defying AGN and one of the most peculiar X-ray nuclear transients. In early 2018, this well-known AGN underwent a changing-look event, in which broad optical emission lines appeared […]


Continue.. Evolution of a Relativistic Outflow and X-ray Corona in the Extreme Changing-Look AGN 1ES 1927+654

A Fresh Look at AGN Spectral Energy Distribution Fitting with the XMM-SERVS AGN Sample

Posted by klaurent Cambridge

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Adam Marshall, Matthew W. Auger-Williams, Manda Banerji, Roberto Maiolino, Rebecca Bowler | Summary: We perform spectral energy distribution (SED) fitting to 711 luminous X-ray AGN at 0.7 < z < 4.5 using 10-bands of optical and infra-red photometric data for objects within XMM-SERVS. This fitting provided 510 […]


Continue.. A Fresh Look at AGN Spectral Energy Distribution Fitting with the XMM-SERVS AGN Sample

A Fresh Look at AGN Spectral Energy Distribution Fitting with the XMM-SERVS AGN Sample

Posted by klaurent Cambridge

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Adam Marshall, Matthew W. Auger-Williams, Manda Banerji, Roberto Maiolino, Rebecca Bowler | Summary: We perform spectral energy distribution (SED) fitting to 711 luminous X-ray AGN at 0.7 < z < 4.5 using 10-bands of optical and infra-red photometric data for objects within XMM-SERVS. This fitting provided 510 […]


Continue.. A Fresh Look at AGN Spectral Energy Distribution Fitting with the XMM-SERVS AGN Sample

Sequential Flows by Irrelevant Operators

Posted by klaurent Chicago

Kavli Affiliate: Savdeep Sethi | First 5 Authors: Christian Ferko, Savdeep Sethi, , , | Summary: We explore whether one can $T overline{T}$ deform a collection of theories that are already $T overline{T}$-deformed. This allows us to define classes of irrelevant deformations that know about subsystems. In some basic cases, we explore the spectrum that […]


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EMPRESS. IX. Extremely Metal-Poor Galaxies are Very Gas-Rich Dispersion-Dominated Systems: Will JWST Witness Gaseous Turbulent High-z Primordial Galaxies?

Posted by klaurent Tokyo

Kavli Affiliate: Masahiro Kawasaki | First 5 Authors: Yuki Isobe, Masami Ouchi, Kimihiko Nakajima, Shinobu Ozaki, Nicolas Bouche | Summary: We present kinematics of 6 local extremely metal-poor galaxies (EMPGs) with low metallicities ($0.016-0.098 Z_{odot}$) and low stellar masses ($10^{4.7}-10^{7.6} M_{odot}$). Taking deep medium-high resolution ($Rsim7500$) integral-field spectra with 8.2-m Subaru, we resolve the small […]


Continue.. EMPRESS. IX. Extremely Metal-Poor Galaxies are Very Gas-Rich Dispersion-Dominated Systems: Will JWST Witness Gaseous Turbulent High-z Primordial Galaxies?

EMPRESS. IX. Extremely Metal-Poor Galaxies are Very Gas-Rich Dispersion-Dominated Systems: Will JWST Witness Gaseous Turbulent High-z Primordial Galaxies?

Posted by klaurent Tokyo

Kavli Affiliate: Masahiro Kawasaki | First 5 Authors: Yuki Isobe, Masami Ouchi, Kimihiko Nakajima, Shinobu Ozaki, Nicolas Bouche | Summary: We present kinematics of 6 local extremely metal-poor galaxies (EMPGs) with low metallicities ($0.016-0.098 Z_{odot}$) and low stellar masses ($10^{4.7}-10^{7.6} M_{odot}$). Taking deep medium-high resolution ($Rsim7500$) integral-field spectra with 8.2-m Subaru, we resolve the small […]


Continue.. EMPRESS. IX. Extremely Metal-Poor Galaxies are Very Gas-Rich Dispersion-Dominated Systems: Will JWST Witness Gaseous Turbulent High-z Primordial Galaxies?