activity
19952026
most citedDust Grain Size Distributions and Extinction in the Milky Way, LMC, and SMC

2.6k citations · 24.9k across the 154 of their papers we have counts for

collaborators

155 papers

astro-ph.GA2026

JWST Observations of Starbursts: The motion of dust - PAH kinematics of M82 and NGC 253 with JWST/MIRI spectroscopy

Fergus R. Donnan, Karin Sandstrom, Alberto D. Bolatto +27

We present an analysis of dust kinematics in the local starburst galaxies M82 (NGC 3034) and NGC 253 using Polycyclic Aromatic Hydrocarbon (PAH) features observed with JWST/MIRI sp…

astro-ph.GA2026

Spatially-Resolved Spectra of Diffuse Galactic Light using 10.8 M DESI Sky Fibers

Andrew K. Saydjari, Bruce T. Draine, Timothy D. Brandt +49

Using 10.8 million ``blank'' sky spectra from the DESI Year 3 dataset, we measure the diffuse galactic light (DGL) spectrum in the optical at spectral resolution by c…

astro-ph.GA2024

The Metallicity Dependence of PAH Emission in Galaxies I: Insights from Deep Radial Spitzer Spectroscopy

Cory M. Whitcomb, J. -D. T. Smith, Karin Sandstrom +9

We use deep Spitzer mid-infrared spectroscopic maps of radial strips across three nearby galaxies with well-studied metallicity gradients (M101, NGC 628, and NGC 2403) to explore t…

astro-ph.GA2024★ 4 cited

Sensitivity of Polarization to Grain Shape: II. Aggregates

B. T. Draine

A previous study (Paper I) investigated the polarization properties of a variety of simple convex grain shapes, some of which were found to be consistent with the observed polariza…

astro-ph.GA2024

The Impact of an AGN on PAH Emission in Galaxies: the Case of Ring Galaxy NGC 4138

G. P. Donnelly, J. D. T. Smith, B. T. Draine +5

We present a focused study of radially-resolved varying PAH emission in the low-luminosity AGN-host NGC 4138 using deep Spitzer/IRS spectral maps. Using new model PAH spectra, we i…

astro-ph.GA2023★ 8 cited

Sensitivity of Polarization to Grain Shape: I. Convex Shapes

B. T. Draine

Aligned interstellar grains produce polarized extinction (observed at wavelengths from the far-ultraviolet to the mid-infrared), and polarized thermal emission (observed at far-inf…