500 citations · 2.1k across the 30 of their papers we have counts for
30 papers
The Altered State of Carinae: HST's Photometric Record 1998--2021
John C. Martin, Kris Davidson, Roberta M. Humphreys +1
Hubble Space Telescope photometry of Carinae spans 23 years, including five spectroscopic events. The rapid brightening rate decreased after 2010, and the spectroscopic events…
The Mass-Loss History of the Red Hypergiant VY CMa
Roberta M. Humphreys, Kris Davidson, A. M. S. Richards +3
Imaging and spectroscopy of the knots, clumps, and extended arcs in the complex ejecta of VY CMa confirm a record of high mass loss events over the past few hundred years. HST/STIS…
The Unexpected Spectrum of the Innermost Ejecta of the Red Hypergiant VY CMa
Roberta M. Humphreys, L. M. Ziurys, J. J. Bernal +6
HST/STIS spectra of the small clumps and filaments closest to the central star in VY CMa reveal that the very strong K I emission and TiO and VO molecular emission, long thought to…
Imaging and spectral performance of CdTe double-sided strip detectors for the Hard X-ray Imager onboard ASTRO-H
Kouichi Hagino, Hirokazu Odaka, Goro Sato +20
The imaging and spectral performance of CdTe double-sided strip detectors (CdTe-DSDs) was evaluated for the ASTRO-H mission. The charcterized CdTe-DSDs have a strip pitch of 0.25 m…
Eta Carinae's Declining Outflow Seen in the UV, 2002-2015
Kris Davidson, Kazunori Ishibashi, John C. Martin +1
Existing HST UV data offer many previously neglected clues to eta Car's behavior since 2000. Here we examine a subset of observations with diverse results. (1) The star's rapid cha…
Inorbit Performance of the Hard X-ray Telescope (HXT) on board the Hitomi (ASTRO-H) satellite
H. Matsumoto, H. Awaki, M. Ishida +16
Hitomi (ASTRO-H) carries two Hard X-ray Telescopes (HXTs) that can focus X-rays up to 80 keV. Combined with the Hard X-ray Imagers (HXIs) that detect the focused X-rays, imaging sp…