The stellar halo in Local Group Hestia simulations II. The accreted component

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Sergey Khoperskov, Ivan Minchev, Noam Libeskind, Misha Haywood, Paola Di Matteo | Summary: In the Milky Way, recent progress in the exploration of its assembly history is driven by the tremendous amount of high-quality data delivered by Gaia, which has revealed a number of substructures potentially linked […]


Continue.. The stellar halo in Local Group Hestia simulations II. The accreted component

The stellar halo in Local Group Hestia simulations I. The in-situ component and the effect of mergers

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Sergey Khoperskov, Ivan Minchev, Noam Libeskind, Misha Haywood, Paola Di Matteo | Summary: Theory suggests that mergers play an important role in shaping galactic disks and stellar haloes, which was observationally confirmed in the MW thanks to the Gaia data. In this work, aiming to probe the […]


Continue.. The stellar halo in Local Group Hestia simulations I. The in-situ component and the effect of mergers

TESS Shines Light on the Origin of the Ambiguous Nuclear Transient ASASSN-18el

Kavli Affiliate: Michael Fausnaugh | First 5 Authors: Jason T. Hinkle, Christopher S. Kochanek, Benjamin J. Shappee, Patrick J. Vallely, Katie Auchettl | Summary: We analyze high-cadence data from the Transiting Exoplanet Survey Satellite (TESS) of the ambiguous nuclear transient (ANT) ASASSN-18el. The optical changing-look phenomenon in ASASSN-18el has been argued to be due to […]


Continue.. TESS Shines Light on the Origin of the Ambiguous Nuclear Transient ASASSN-18el

TESS Shines Light on the Origin of the Ambiguous Nuclear Transient ASASSN-18el

Kavli Affiliate: Michael Fausnaugh | First 5 Authors: Jason T. Hinkle, Christopher S. Kochanek, Benjamin J. Shappee, Patrick J. Vallely, Katie Auchettl | Summary: We analyze high-cadence data from the Transiting Exoplanet Survey Satellite (TESS) of the ambiguous nuclear transient (ANT) ASASSN-18el. The optical changing-look phenomenon in ASASSN-18el has been argued to be due to […]


Continue.. TESS Shines Light on the Origin of the Ambiguous Nuclear Transient ASASSN-18el

Sunyaev-Zel’dovich effect and X-ray scaling relations of galaxies, groups and clusters in the IllustrisTNG simulations

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Ana-Roxana Pop, Lars Hernquist, Daisuke Nagai, Rahul Kannan, Rainer Weinberger | Summary: Observable thermodynamical properties of the intracluster medium (ICM) reflect the complex interplay between AGN feedback and the gravitational collapse of haloes. Using the large volume TNG300 simulation of the IllustrisTNG project we provide predictions for […]


Continue.. Sunyaev-Zel’dovich effect and X-ray scaling relations of galaxies, groups and clusters in the IllustrisTNG simulations

A Taxonomy for the Configurations of Quadruply Lensed Quasars

Kavli Affiliate: Paul L. Schechter | First 5 Authors: Paul L. Schechter, , , , | Summary: A simple, novice-friendly scheme for classifying the image configurations of quadruply lensed quasars is proposed. With only six classes, it is intentionally coarse-grained. Readers are invited to test drive the scheme on a sample of 12 quadruply lensed […]


Continue.. A Taxonomy for the Configurations of Quadruply Lensed Quasars

A Taxonomy for the Configurations of Quadruply Lensed Quasars

Kavli Affiliate: Paul L. Schechter | First 5 Authors: Paul L. Schechter, , , , | Summary: A simple, novice-friendly scheme for classifying the image configurations of quadruply lensed quasars is proposed. With only six classes, it is intentionally coarse-grained. It focuses on the kitelikeness and circularity of these configurations, or the absence thereof. Other […]


Continue.. A Taxonomy for the Configurations of Quadruply Lensed Quasars

There and back again: understanding the critical properties of backsplash galaxies

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Josh Borrow, Mark Vogelsberger, Stephanie O’Neil, Michael A. McDonald, Aaron Smith | Summary: Backsplash galaxies are galaxies that once resided inside a cluster, and have migrated back outside as they move towards the apocenter of their orbit. The kinematic properties of these galaxies are well understood, thanks […]


Continue.. There and back again: understanding the critical properties of backsplash galaxies

There and back again: understanding the critical properties of backsplash galaxies

Kavli Affiliate: Michael A. McDonald | First 5 Authors: Josh Borrow, Mark Vogelsberger, Stephanie O’Neil, Michael A. McDonald, Aaron Smith | Summary: Backsplash galaxies are galaxies that once resided inside a cluster, and have migrated back oustide as they move towards the apocentre of their orbit. The kinematic properties of these galaxies are well understood, […]


Continue.. There and back again: understanding the critical properties of backsplash galaxies