253 citations · 1k across the 31 of their papers we have counts for
12 papers · 1 filter
Solving the Imaging Problem with Coherently Integrated Multiwavelength Data
H. R. Schmitt, T. A. Pauls, J. T. Armstrong +7
Recovering images from optical interferometric observations is one of the major challenges in the field. Unlike the case of observations at radio wavelengths, in the optical the at…
Constraining the Physical Parameters of the Circumstellar Disk of chi Ophiuchi
C. Tycner, C. E. Jones, T. A. A. Sigut +4
We present a numerical model describing a circularly symmetric gaseous disk around the Be star chi Ophiuchi. The model is constrained by long-baseline interferometric observations…
Measurements of binary stars with coherent integration of NPOI data
Anders M. Jorgensen, H. Schmitt, R. Hindsley +5
In this paper we use coherently integrated visibilities (see separate paper in these proceedings, Jorgensen et al. 2008) to measure the properties of binary stars. We use only the…
A Parameter Study of Classical Be Star Disk Models Constrained by Optical Interferometry
C. E. Jones, C. Tycner, T. A. A. Sigut +2
We have computed theoretical models of circumstellar disks for the classical Be stars Dra, Psc, and Cyg. Models were constructed using a non-LTE radiative transf…
Infrared Excess in the Be Star Delta Scorpii
R. J. Halonen, C. E. Jones, T. A. A. Sigut +6
We present infrared photometric observations of the Be binary system delta Scorpii obtained in 2006. The J,H and K magnitudes are the same within the errors compared to observation…
Navy Prototype Optical Interferometer Imaging of Line Emission Regions of beta Lyrae Using Differential Phase Referencing
H. R. Schmitt, T. A. Pauls, C. Tycner +9
We present the results of an experiment to image the interacting binary star beta Lyrae with data from the Navy Prototype Optical Interferometer (NPOI), using a differential phase…
Optical interferometric observations of Theta 1 Orionis C from NPOI and implications for the system orbit
J. Patience, R. T. Zavala, L. Prato +5
With the Navy Prototype Optical Interferometer (NPOI), the binary system Theta 1 Orionis C, the most massive member of the Trapezium, was spatially resolved over a time period exte…
Late-Type Near-Contact Eclipsing Binary [HH97] FS Aur-79
S. J. Austin, J. W. Robertson, C. Tycner +2
The secondary photometric standard star #79 for the FS Aur field (Henden & Honeycutt 1997) designated as [HH97] FS Aur-79 (GSC 1874 399) is a short period (0.2508 days) eclipsing b…
Initial Results from the USNO Dispersed Fourier Transform Spectrograph
Arsen R. Hajian, Bradford B. Behr, Andrew T. Cenko +15
We have designed and constructed a ``dispersed Fourier Transform Spectrometer'' (dFTS), consisting of a conventional FTS followed by a grating spectrometer. By combining these two…
Constraining Disk Parameters of Be Stars using Narrowband H-alpha Interferometry with the NPOI
C. Tycner, G. C. Gilbreath, R. T. Zavala +7
Interferometric observations of two well-known Be stars, gamma Cas and phi Per, were collected and analyzed to determine the spatial characteristics of their circumstellar regions.…
Properties of the H-alpha-emitting Circumstellar Regions of Be Stars
Christopher Tycner, John B. Lester, Arsen R. Hajian +6
Long-baseline interferometric observations obtained with the Navy Prototype Optical Interferometer of the H-alpha-emitting envelopes of the Be stars eta Tauri and beta Canis Minori…
The DDO IVC Distance Project: Survey Description and the Distance to G139.6+47.6
Christopher R. Burns, Christopher Tycner, Megan McClure +4
We present a detailed analysis of the distance determination for one intermediate Velocity Cloud (IVC G139.6+47.6) from the ongoing DDO IVC Distance Project. Stars along the line o…