THE VISUAL ORBIT OF THE 1.1 DAY SPECTROSCOPIC BINARY σ2 CORONAE BOREALIS FROM INTERFEROMETRY AT THE CHARA ARRAY

@article{Raghavan2008THEVO,
  title={THE VISUAL ORBIT OF THE 1.1 DAY SPECTROSCOPIC BINARY $\sigma$2 CORONAE BOREALIS FROM INTERFEROMETRY AT THE CHARA ARRAY},
  author={Deepak Raghavan and Harold A. Mcalister and Guillermo Torres and David W. Latham and Brian D. Mason and Tabetha S. Boyajian and Ellyn K. Baines and Stephen J. Williams and Theo A. ten Brummelaar and Christopher D. Farrington and Stephen T. Ridgway and Laszlo Sturmann and Judit Sturmann and Nils H. Turner},
  journal={The Astrophysical Journal},
  year={2008},
  volume={690},
  pages={394 - 406}
}
We present an updated spectroscopic orbit and a new visual orbit for the double-lined spectroscopic binary σ2 Coronae Borealis (CrB) based on radial velocity measurements at the Oak Ridge Observatory in Harvard, MA and interferometric visibility measurements at the Center for High Angular Resolution Astronomy (CHARA) Array on Mount Wilson in California. σ2 CrB is composed of two Sun-like stars of roughly equal mass in a circularized orbit with a period of 1.14 days. The long baselines of the… 

Visual Orbits of Spectroscopic Binaries with the CHARA Array. I. HD 224355

We present the visual orbit of the double-lined spectroscopic binary HD 224355 from interferometric observations with the CHARA Array, as well as an updated spectroscopic analysis using echelle

AN INTERFEROMETRIC AND SPECTROSCOPIC ANALYSIS OF THE MULTIPLE STAR SYSTEM HD 193322

The star HD 193322 is a remarkable multiple system of massive stars that lies at the heart of the cluster Collinder 419. Here we report on new spectroscopic observations and radial velocities of the

A CHARA ARRAY SURVEY OF CIRCUMSTELLAR DISKS AROUND NEARBY Be-TYPE STARS

We report on a high angular resolution survey of circumstellar disks around 24 northern sky Be stars. The K-band continuum survey was made using the CHARA Array long baseline interferometer

INNER ORBITS IN HIERARCHICAL TRIPLE SYSTEMS FROM THE CHARA ARRAY. I. V819 Her B

We employ the wide component of a triple system to calibrate the interferometric visibility of the inner, short-period orbit in the case of V819 Her. The orbit for V819 Her B was thereby derived by

A COORDINATED X-RAY AND OPTICAL CAMPAIGN OF THE NEAREST MASSIVE ECLIPSING BINARY, δ ORIONIS Aa. IV. A MULTIWAVELENGTH, NON-LTE SPECTROSCOPIC ANALYSIS

Eclipsing systems of massive stars allow one to explore the properties of their components in great detail. We perform a multi-wavelength, non-LTE analysis of the three components of the massive

A SURVEY OF STELLAR FAMILIES: MULTIPLICITY OF SOLAR-TYPE STARS

We present the results of a comprehensive assessment of companions to solar-type stars. A sample of 454 stars, including the Sun, was selected from the Hipparcos catalog with π>40 mas, σπ/π < 0.05,

Continued Kinematic and Photometric Investigations of Hierarchical Solar-Type Multiple Star Systems

We observed 15 of the solar-type binaries within 67 pc of the Sun previously observed by the Robo-AO system in the visible, with the PHARO near-infrared camera and the PALM-3000 adaptive optics

ORBIT DETERMINATION OF DOUBLE-LINED SPECTROSCOPIC BINARIES BY FITTING THE REVISED HIPPARCOS INTERMEDIATE ASTROMETRIC DATA

Untill now, the Hipparcos intermediate astrometric data (HIAD) have contributed little to the full orbit determination of double-lined spectroscopic binaries (SB2s). This is because the photocenter

Doppler Imaging and Differential Rotation of σ2 Coronae Borealis Using SONG

We present new Doppler images of both components of the double-lined binary σ2 CrB, based on the high-resolution spectroscopic data collected during 11 nights in 2015 March–April. The observed

The Most Probable 3D Orbit for Spectroscopic Binaries

Binary stars are a very important source of astronomical information. Those short-period binaries observed by means of both spectroscopy and interferometry can provide, through their corresponding

References

SHOWING 1-10 OF 50 REFERENCES

The Visual Orbit of 64 Piscium

We report on the determination of the visual orbit of the double-lined spectroscopic binary system 64 Piscium with data obtained by the Palomar Testbed Interferometer in 1997 and 1998. 64 Psc is a

ABSOLUTE PROPERTIES OF THE HIGHLY ECCENTRIC ECLIPSING BINARY STAR LV HERCULIS

We report extensive spectroscopic and differential V-band photometric observations of the 18.4 day detached double-lined eclipsing binary LV Her (F9 v), which has the highest eccentricity (e ≃ 0.613)

Doppler imaging of stellar surface structure - XIX. The solar-type components of the close binary $\sigma\mathsf{^{2}}$ Coronae Borealis

We present the first Doppler image for both stellar components of the F9+G0 ZAMS binary σ 2 CrB and found evidence for the coexistence of cool and warm spots on both stars. Cool spots appear mainly

The spectroscopic binary eta Andromedae: Determination of the orbit by optical interferometry

We have determined the following orbital elements of the double-lined spectroscopic binary η Andromedae (combined spectral class G8 IIIb) using measurements with the Mark III long baseline optical

A Survey of Proper-Motion Stars. XVI. Orbital Solutions for 171 Single-lined Spectroscopic Binaries

We report 25,563 radial velocity measurements for 1359 single-lined stars in the Carney-Latham sample of 1464 stars selected for high proper motion. For 171 of these, we present spectroscopic orbital

Physical Orbit for λ Virginis and a Test of Stellar Evolution Models

The star λ Virginis is a well-known double-lined spectroscopic Am binary with the interesting property that both stars are very similar in abundance but one is sharp-lined and the other is

First Results from the CHARA Array. I. An Interferometric and Spectroscopic Study of the Fast Rotator α Leonis (Regulus)

We report on K-band interferometric observations of the bright, rapidly rotating star Regulus (type B7 V) made with the CHARA Array on Mount Wilson, California. Through a combination of

The Geneva–Copenhagen Survey of the Solar Neighbourhood

Abstract We report on a new survey of metallicities, ages, and Galactic orbits for a complete, magnitude-limited, and kinematically unbiased all-sky sample of 16 682 nearby F- and G-dwarfs. Our ∼ 63

Direct Measurement of the Radius and Density of the Transiting Exoplanet HD 189733b with the CHARA Array

We have measured the angular diameter of the transiting extrasolar planet host star HD 189733 using the CHARA optical/IR interferometric array. Combining our new angular diameter of 0.377 ± 0.024 mas

Navy Prototype Optical Interferometer Observations of the Double Stars Mizar A and Matar

We present a detailed analysis of two spectroscopic binaries based on new observations obtained with the Navy Prototype Optical Interferometer (NPOI). While the data calibration needs refinement,