58 citations · 91 across the 6 of their papers we have counts for
7 papers
A Comprehensive Analysis of WISE Mid-Infrared Colors for Obscured AGN Selection
Anika Goel, Samir Salim, Sara L. Ellison +4
In this paper, we investigate the robustness of WISE mid-IR color selection (W1-W2) for identifying obscured (Type 2) active galactic nuclei (AGNs) at low redshift (z<0.3), using a…
A precessing jet from an active galactic nucleus drives gas outflow from a disk galaxy
Justin A. Kader, Vivian U, Loreto Barcos-Muñoz +30
To reproduce observed galaxy properties, cosmological simulations require that massive galaxies experience feedback from active galactic nuclei, which regulates star formation with…
VLT-MUSE spectroscopy of AGNs misclassified by BPT diagnostic or with weak emission lines
Christopher J. Agostino, Samir Salim, Médéric Boquien +3
Despite powerful X-ray emission, some AGNs are known to either lack optical emission lines (so-called 'optically dull' AGNs) or have lines that fall on the star-forming branch of t…
A New Physical Picture for AGNs Lacking Optical Emission Lines
Christopher J. Agostino, Samir Salim, Sara L. Ellison +2
In this work, we use ~500 low-redshift (z ~ 0.1) X-ray AGNs observed by XMM-Newton and SDSS to investigate the prevalence and nature of AGNs that apparently lack optical emission l…
Physical Drivers of Emission Line Diversity of SDSS Seyfert 2s and LINERs After Removal of Contributions by Star Formation
Christopher J. Agostino, Samir Salim, S. M. Faber +6
Ionization sources other than HII regions give rise to the right-hand branch in the standard ([NII]) BPT diagram, populated by Seyfert 2s and LINERs. However, because the majority…
In-plane Néel wall chirality and orientation of interfacial Dzyaloshinskii-Moriya vector in magnetic films
MacCallum Robertson, Christopher J. Agostino, Gong Chen +7
The interfacial Dzyaloshinskii-Moriya interaction (DMI) is of great interest as it can stabilize chiral spin structures in thin films. Experiments verifying the orientation of the…
Crossing the Line: Active Galactic Nuclei in the Star-forming region of the BPT Diagram
Christopher J. Agostino, Samir Salim
In this work, we investigate the reliability of the BPT diagram for excluding galaxies that host an AGN. We determine the prevalence of X-ray AGN in the star-forming region of the…