activity
19992011
most citedAstrophysical Quantities of Cepheid Variables Measured with the NPOI

230 citations · 574 across the 9 of their papers we have counts for

collaborators

9 papers

astro-ph.SR2011★ 20 cited

Stellar Astrophysics with a Dispersed Fourier Transform Spectrograph. II. Orbits of Double-lined Spectroscopic Binaries

Bradford B. Behr, Andrew T. Cenko, Arsen R. Hajian +4

We present orbital parameters for six double-lined spectroscopic binaries (iota Pegasi, omega Draconis, 12 Bootis, V1143 Cygni, beta Aurigae, and Mizar A) and two double-lined trip…

astro-ph.IM2009★ 20 cited

Stellar Astrophysics with a Dispersed Fourier Transform Spectrograph. I. Instrument Description and Orbits of Single-lined Spectroscopic Binaries

Bradford B. Behr, Arsen R. Hajian, Andrew T. Cenko +4

We have designed and constructed a second-generation version of the Dispersed Fourier Transform Spectrograph, or dFTS. This instrument combines a spectral interferometer with a dis…

astro-ph2006★ 19 cited

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…

astro-ph2006★ 56 cited

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.…

astro-ph2005★ 60 cited

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…

astro-ph2002★ 42 cited

Hubble Space Telescope Expansion Parallaxes of the Planetary Nebulae NGC 6578, NGC 6884, NGC 6891, and IC 2448

Stacy Palen, Bruce Balick, Arsen R. Hajian +3

We have combined two epochs of Hubble Space Telescope WFPC2 imaging data with ground-based expansion velocities to determine distances to three planetary nebulae (NGC 6578, NGC 688…