The nearby eclipsing stellar system δ Velorum - II. First reliable orbit for the eclipsing pair

@article{Pribulla2011TheNE,
  title={The nearby eclipsing stellar system $\delta$ Velorum - II. First reliable orbit for the eclipsing pair},
  author={Theodor Pribulla and A. M{\'e}rand and Pierre Kervella and Martin Vavnko and Ian R. Stevens and Rolf Chini and V. H. Hoffmeister and Otmar Stahl and A. Berndt and Markus Mugrauer and Matthias Ammler-von Eiff},
  journal={Astronomy and Astrophysics},
  year={2011},
  volume={528}
}
Context. The nearby multiple system δ Velorum contains a widely detached eclipsing binary and a third component. Aims. We take advantage of this system offering the opportunity to determine the set of fundamental parameters (masses, luminosities, and radii) of three coeval stars with sufficient precision to test models of stellar evolution. Methods. Extensive high-resolution spectroscopy is analyzed by the broadening function technique to provide the first spectroscopic orbit of the eclipsing… 

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    Proceedings of the International Astronomical Union
  • 2011
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References

SHOWING 1-10 OF 17 REFERENCES

Interferometric observations of the multiple stellar system δ Velorum

Context. The nearby (∼24 pc) triple stellar system δ Velorum contains a close, eclipsing binary (Aa, Ab) discovered in 2000. Multiple systems provide an opportunity to determine the set of

Eclipsing binaries observed with the WIRE satellite. I. Discovery and photometric analysis of the ne

Context. Determinations of stellar mass and radius with realistic uncertainties at the level of 1% provide important constraints on models of stellar structure and evolution. Aims. We present a

The nearby eclipsing stellar system $\delta$ Velorum - I. Origin of the infrared excess from VISIR and NACO imaging

Context. The triple stellar system δ Vel system presents a significant infrared excess, whose ori gin is still being debated. A large infrared bow shock has been discovered using Spitzer/MIPS

The MOST Asteroseismology Mission: Ultraprecise Photometry from Space

The Microvariablity and Oscillations of Stars (MOST) mission is a low‐cost microsatellite designed to detect low‐degree acoustic oscillations (periods of minutes) with micromagnitude precision in

Modeling the Infrared Bow Shock at δ Velorum: Implications for Studies of Debris Disks and λ Boötis Stars

We have discovered a bow shock shaped mid-infrared excess region in front of δ Velorum using 24 μm observations obtained with the Multiband Imaging Photometer for Spitzer (MIPS). Although the bow

SMEI observations of previously unseen pulsation frequencies in γ Doradus

Aims. As g-mode pulsators, gamma-Doradus-class stars may naively be expected to show a large number of modes. Taking advantage of the long photometric time-series generated by the solar mass ejection

Eccentric orbit generalization and simultaneous solution of binary star light and velocity curves

The computation of binary star light and radial velocity curves are discussed, including the effects of eccentric orbits and nonsynchronous rotation. Logical relations needed to impose physical

Rotational velocities of A-type stars ?;?? I. Measurement of v sini in the southern hemisphere

Within the scope of a Key Programme determining fundamental parameters of stars observed by HIPPARCOS, spectra of 525 B8 to F2-type stars brighter than V = 8 have been collected at ESO. Fourier

A standard stellar library for evolutionary synthesis: I. calibration of theoretical spectra

We present a comprehensive hybrid library of synthetic stellar spectra based on three original grids of model atmosphere spectra by Kurucz (1995), Fluks et al. (1994), and Bessell et al. (1989,

Orbits for five southern visual binaries

The visual component of WDS 08447-5443 (= δ Vel), which is not the same as the eclipsing component recently discovered by Otero (2000), has an unexpectedly short period.