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THE MASS OF THE BLACK HOLE IN CYGNUS X-1
Cygnus X-1 is a binary star system that is comprised of a black hole and a massive giant companion star in a tight orbit. Building on our accurate distance measurement reported in the precedingExpand
First Results from the CHARA Array. VII. Long-Baseline Interferometric Measurements of Vega Consistent with a Pole-On, Rapidly Rotating Star
We have obtained high-precision interferometric measurements of Vega with the CHARA Array and FLUOR beam combiner in the K’ band at projected baselines between 103m and 273m. The measured visibilityExpand
Circumstellar material in the Vega inner system revealed by CHARA/FLUOR
Context. Only a handful of debris disks have been imaged up to now. Due to the need for high dynamic range and high angular resolution, very little is known about the inner planetary region, whereExpand
Extended envelopes around Galactic Cepheids. II. Polaris and delta Cephei from near-infrared interfe
We present the results of long-baseline interferometric observations of the classical Cepheids Polaris and δ  Cep in the near infrared K'  band (1.9-2.3  μ m), using the FLUOR instrument of the CHARAExpand
A "combination nova" outburst in Z andromedae: Nuclear shell burning triggered by a disk instability
We describe observational evidence for a new kind of interacting binary star outburst that involves both an accretion instability and an increase in thermonuclear shell burning on the surface of anExpand
The projection factor of δ Cephei A calibration of the Baade-Wesselink method using the CHARA Array
Cepheids play a key role in astronomy as standard candles for measuring intergalactic distances. Their distance is usually inferred from the period-luminosity relationship, calibrated using theExpand
CHARA Array K'-Band Measurements of the Angular Dimensions of Be Star Disks
We present the firstK 0 -band,long-baseline interferometric observations of the northern Be starsCas,� Per,� Tau, andDra. The measurements were made with multiple telescope pairs of the CHARA ArrayExpand
On the limb darkening, spectral energy distribution, and temperature structure of procyon
We have fit synthetic visibilities from three-dimensional ((COBOLD)-B-5+PHOENIX) and one-dimensional (PHOENIX, ATLAS 12) model stellar atmospheres of Procyon (F5 IV) to high-precision interferometricExpand
Resolving Vega and the inclination controversy with CHARA/MIRC
Optical and infrared interferometers definitively established that the photometric standard Vega (={alpha} Lyrae) is a rapidly rotating star viewed nearly pole-on. Recent independent spectroscopicExpand
THE RED RECTANGLE: ITS SHAPING MECHANISM AND ITS SOURCE OF ULTRAVIOLET PHOTONS
The proto planetary Red Rectangle (RR) nebula is powered by HD 44179, a spectroscopic binary (P = 318 d), in which a luminous post-asymptotic giant branch (AGB) component is the primary source ofExpand
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