activity
19972024
most citedCollisional Plasma Models with APEC/APED: Emission Line Diagnostics of Hydrogen-like and Helium-like Ions

2.1k citations · 4.7k across the 49 of their papers we have counts for

collaborators

49 papers

astro-ph.IM2024

A Cryogen-Free Electron Beam Ion Trap for Astrophysically Relevant Spectroscopic Studies

A. C. Gall, A. Foster, Y. Yang +4

The detailed design and operation of the Smithsonian Astrophysical Observatory's EBIT are described for the first time, including recent design upgrades that have led to improved s…

astro-ph.SR2023★ 1 cited

Twenty-Five Years of Accretion onto the Classical T Tauri Star TW Hya

Gregory J. Herczeg, Yuguang Chen, Jean-Francois Donati +39

Accretion plays a central role in the physics that governs the evolution and dispersal of protoplanetary disks. The primary goal of this paper is to analyze the stability over time…

astro-ph.SR2019

Understanding Galactic Star Formation with Next Generation X-ray Spectroscopy and Imaging

Scott J. Wolk, Rachel Osten, Nancy Brickhouse +8

This white paper is motivated by open questions in star formation, which can be uniquely addressed by high resolution X-ray imaging and require an X-ray observatory with large coll…

astro-ph.GA2019

Increasing the Discovery Space in Astrophysics - A Collation of Six Submitted White Papers

G. Fabbiano, M. Elvis, A. Accomazzi +46

We write in response to the call from the 2020 Decadal Survey to submit white papers illustrating the most pressing scientific questions in astrophysics for the coming decade. We p…

astro-ph.SR2018

High Resolution Near-Infrared Spectroscopy of Cool Dwarf Stars

Andrea Dupree, Nancy Brickhouse, Jonathan Irwin +2

We present results from a near infrared survey of the He I line (10830 Angstrom) in cool dwarf stars taken with the PHOENIX spectrograph at the 4-m Mayall telescope at Kitt Peak Na…

astro-ph.GA2017★ 8 cited

The OVI mystery: mismatch between X-ray and UV column densities

Smita Mathur, Fabrizio Nicastro, Anjali Gupta +4

The UV spectra of Galactic and extragalactic sightlines often show OVI absorption lines at a range of redshifts, and from a variety of sources from the Galactic circumgalactic medi…