activity
20092024
most cited1 to 2.4 micron Near-IR spectrum of the Giant Planet Pictoris b obtained with the Gemini Planet Imager

103 citations · 630 across the 24 of their papers we have counts for

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Showing astro-ph.SRShow all

7 papers · 1 filter

astro-ph.SR2020★ 36 cited

Multiband GPI Imaging of the HR 4796A Debris Disk

Christine H. Chen, Johan Mazoyer, Charles A. Poteet +36

We have obtained Gemini Planet Imager (GPI) J-, H-, K1-, and K2-Spec observations of the iconic debris ring around the young, main-sequence star HR 4796A. We applied several point-…

astro-ph.SR2020★ 26 cited

The Gemini Planet Imager view of the HD 32297 debris disk

Gaspard Duchene, Malena Rice, Justin Hom +60

We present new -band scattered light images of the HD 32297 edge-on debris disk obtained with the Gemini Planet Imager (GPI). The disk is detected in total and polarized intensi…

astro-ph.SR2014★ 56 cited

Dynamical Evolution of Viscous Disks around Be Stars. II : polarimetry

Xavier Haubois, Bruno C. Mota, Alex C. Carciofi +4

Be stars exhibit variability for a great number of observables. Putting the pieces together of the disk dynamics is not an easy task and requires arduous modeling before achieving…

astro-ph.SR2014★ 32 cited

Disk-Loss and Disk-Renewal Phases in Classical Be Stars II. Contrasting with Stable and Variable Disks

Zachary H. Draper, John P. Wisniewski, Karen S. Bjorkman +5

Recent observational and theoretical studies of classical Be stars have established the utility of polarization color diagrams (PCD) in helping to constrain the time-dependent mass…

astro-ph.SR2011★ 21 cited

A New Diagnostic of the Radial Density Structure of Be Disks

Zachary H. Draper, John P. Wisniewski, Karen S. Bjorkman +5

We analyze the intrinsic polarization of two classical Be stars in the process of losing their circumstellar disks via a Be to normal B star transition originally reported by Wisni…

astro-ph.SR2011

Disk-Loss and Disk Renewal Phases in Classical Be Stars II. Detailed Analysis of Spectropolarimetric Data

Zachary H. Draper, John P. Wisniewski, Karen S. Bjorkman +4

In Wisniewski et al. 2010, paper I, we analyzed 15 years of spectroscopic and spectropolarimetric data from the Ritter and Pine Bluff Observatories of 2 Be stars, 60 Cygni and π Aq…

astro-ph.SR2009★ 64 cited

Disk Loss and Disk Renewal Phases in Classical Be Stars I: Analysis of Long-Term Spectropolarimetric Data

John P. Wisniewski, Zachary H. Draper, Karen S. Bjorkman +3

(Abridged) Classical Be stars occasionally transition from having a gaseous circumstellar disk (''Be phase'') to a state in which all observational evidence for the presence of the…