Proceedings Article10.1117/12.2055364
MWC 314: binary results from optical interferometry compared with spectroscopy and photometry
Noel D. Richardson,Anthony F. J. Moffat,Raphael Maltais-Tariant,Herbert Pablo,Douglas R. Gies,Nicole St-Louis,Gail Schaefer,Anatoly S. Miroshnichenko,Chris Farrington,Emily J. Aldoretta,Étienne Artigau,Tabetha S. Boyajian,Katie Gordon,P. J. Goldfinger,Jeremy Jones,Rachel A. Matson,Harold A. McAlister,David O'Brien,Deepak Raghavan,Tahina Ramiaramanantsoa,Stephen T. Ridgway,Nic Scott,Judit Sturmann,Laszlo Sturmann,T. ten Brummelaar,Joshua D. Thomas,Nils H. Turner,Norm Vargas,Sergey Zharikov +28 more
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TL;DR: In this article, a multi-technique campaign was initiated to understand the physics and properties of the massive binary systemMWC 314 using high-resolution spectr oscopy and Johnson photometry, near-infrared spectrophotometry, and K 0 band long-baseline interferometry with the CHARA Array.
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Abstract: We initiated a multi-technique campaign to understand the physics an d properties of the massive binary systemMWC 314. Our observations included optical high-resolution spectr oscopy and Johnson photometry, near-infrared spectrophotometry, and K 0 band long-baseline interferometry with the CHARA Array. Our resu ltsplace strong constraints on the spectroscopic orbit, along with re asonable observations of the phase-lockedphotometric variability. Our interferometry, with input from the sp ectrophotometry, provides information onthe geometry of the system that appears to consist of a primary s tar lling its Roche Lobe and loosing massboth onto a hidden companion and through the outer Lagrangian po int, feeding a circumbinary disk. While themulti-faceted observing program is allowing us to place some constra ints on the system, there is also a possibilitythat the outow seen by CHARA is actually a jet and not a circumbinar y disk.Keywords: stars: early-type { binaries: close { stars: individual (MWC 314) { m ethods: observational {techniques: high angular resolution, spectroscopic
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Citations
Spectral Irradiance Calibration in the Infrared. XIV: the Absolute Calibration of 2MASS
TL;DR: In this article, the optical components in the three 2MASS cameras, and incorporated detector quantum efficiency curves and site-specific atmospheric transmissions, were combined to create three relative spectral response curves (RSRs) associated with "zero magnitude" in the JHKs bands.
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Toward Direct Detection of Hot Jupiters with Precision Closure Phase
Ming Zhao,John D. Monnier,X. Che,Ettore Pedretti,Nathalie Thureau +4 more
- 01 Sep 2014
TL;DR: In this paper, the authors used the CHARA interferometer array with the MIRC instrument to detect the thermal emission of nearby hot Jupiters with precision closure phase.
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Interpreting the spectral behavior of MWC 314
Antonio Frasca,Anatoly S. Miroshnichenko,Corinne Rossi,Michael Friedjung,E. Marilli,G. Muratorio,I. Busà +6 more
TL;DR: In this paper, the authors analyzed the radial velocity variations displayed by the absorption lines from the star's atmosphere using high-resolution optical spectra and fitting the RV curve with an eccentric orbit model.
11
Interpreting the spectral behavior of MWC 314
Antonio Frasca,Anatoly S. Miroshnichenko,Corinne Rossi,Michael Friedjung,E. Marilli,G. Muratorio,I. Busà +6 more
TL;DR: In this paper, the authors analyzed the radial velocity (RV) variations displayed by the absorption lines from the star's atmosphere using high-resolution optical spectra, which strongly suggest that the object is a binary system composed from a supergiant B[e] star and an undetected companion.
References
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TL;DR: More than 70% of all massive stars will exchange mass with a companion, leading to a binary merger in one-third of the cases, greatly exceed previous estimates and imply that binary interaction dominates the evolution of massive stars, with implications for populations ofmassive stars and their supernovae.
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Sylvia Ekström,Cyril Georgy,Patrick Eggenberger,Georges Meynet,Nami Mowlavi,Aurélien Wyttenbach,Anahí Granada,Thibaut Decressin,Raphael Hirschi,Urs Frischknecht,Corinne Charbonnel,André Maeder +11 more
TL;DR: In this paper, a set of models for solar metallicity, where the effects of rotation are accounted for in a homogeneous way, is presented, and a grid of 48 different stellar evolutionary tracks, both rotating and non-rotating, at Z=0.014 are computed.
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Sylvia Ekström,Cyril Georgy,Patrick Eggenberger,Georges Meynet,Nami Mowlavi,Aurélien Wyttenbach,Anahí Granada,Anahí Granada,Thibaut Decressin,Raphael Hirschi,Raphael Hirschi,Urs Frischknecht,Urs Frischknecht,Corinne Charbonnel,Corinne Charbonnel,André Maeder +15 more
TL;DR: In this paper, a set of models for solar metallicity, where the effects of rotation are accounted for in a homogeneous way, is presented, and a grid of 48 different stellar evolutionary tracks, both rotating and non-rotating, at Z ǫ = 0.014, spanning a wide mass range from 0.8 to 120 m ⊙.
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TL;DR: A review of the physical characteristics and behavior of luminous blue variables can be found in this article, where the authors discuss their brief but critical role in massive star evolution, and possible mechanisms for their remarkable instability.
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Spectral Irradiance Calibration in the Infrared. XIV: the Absolute Calibration of 2MASS
TL;DR: In this article, the optical components in the three 2MASS cameras, and incorporated detector quantum efficiency curves and site-specific atmospheric transmissions, were combined to create three relative spectral response curves (RSRs) associated with "zero magnitude" in the JHKs bands.
856