&lt;title&gt;Fully automated high-resolution spectroscopy at Swiss 1.2 m La Silla telescope&lt;/title&gt;

Weber, L.; Blecha, A.; Davignon, G.; Maire, C.; Queloz, D.; Russiniello, Giovanni B.; Simond, G.

doi:10.1117/12.388420

Cited by 2 publications

(4 citation statements)

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“…The radial velocity data were reduced using the CORALIE automated pipeline (Weber et al 2000). This pipeline measures the CCF, the full width at half maximum (FWHM), the bisector, and the H α chromospheric activity indicator.…”

Section: Radial Velocitiesmentioning

confidence: 99%

The discovery of two new benchmark brown dwarfs with precise dynamical masses at the stellar-substellar boundary

Rickman,

Ceva,

Matthews

et al. 2024

A&A

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Measuring dynamical masses of substellar companions is a powerful tool for testing models of mass-luminosity-age relations as well as for determining observational features that constrain the boundary between stellar and substellar companions. In order to dynamically constrain the mass of such companions, we use multiple exoplanet measurement techniques to remove degeneracies in the orbital fits of these objects and place tight constraints on their model-independent masses. We combined long-period radial velocity data from the CORALIE survey with relative astrometry from direct imaging with VLT/SPHERE as well as with astrometric accelerations from Hipparcos Gaia eDR3 to perform a combined orbital fit and measure precise dynamical masses of two newly discovered benchmark brown dwarfs. We report the discovery of HD 112863 B and HD 206505 B, which are two new benchmark likely brown dwarfs that sit at the substellar-stellar boundary, with precise dynamical masses. We performed an orbital fit that yielded the dynamical masses of $77.1^ M_ Jup $ and $79.8 Jup $ for HD 112863 B and HD 206505 B, respectively. We determined the orbital period of HD 112863 B to be $21.59 years and the orbital period of HD 206505 B to be $ years. From the $H$ and $K$ band photometry from IRDIS data taken with VLT/SPHERE, we estimate the spectral types of both HD 112863 B and HD 206505 B to be early-mid L-types.

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Section: Radial Velocitiesmentioning

confidence: 99%

The discovery of two new benchmark brown dwarfs with precise dynamical masses at the stellar-substellar boundary

Rickman,

Ceva,

Matthews

et al. 2024

A&A

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“…The design of the control system had to fit the new observatory concept which had been also developed for the T120 project (see [1]). The main requirements influencing the structure of the control system were:…”

Section: Design Constraintsmentioning

confidence: 99%

“…The observation system, developed at the Geneva Observatory for the T120 project, is based on a client-server architecture running on UNIX machines of the LAN observatory network [1]. The telescope controller is bridged to the observation software following the same scheme as the others instrument controllers of the Geneva Observatory System (Fig.…”

Section: The Observation System Of the Geneva Observatorymentioning

confidence: 99%

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<title>Robust control system for the new 1.2-m telescopes of the Geneva Observatory</title>

Russiniello¹,

Huguenin²,

Wildi

2000

Advanced Telescope and Instrumentation Control Software

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The Geneva Observatory has built two new 1.2-meter twin telescopes, one of them already operating in Chile since May 1998. The second prototype will be installed at the end of the year 2000 on the Canary Island La Palma (Spain). The technological complexity of these alt-azimuthal telescopes, as well as the operational constraints (an observer should be able to command on his own the whole infrastructure) required a control system taking care of all observation tasks, similar to the ones mounted on much larger telescopes. This paper presents the hardware and the distributed software architecture of this 1.2-meter telescope control system, entirely designed and built by the Geneva Observatory. The modular concept and the choices of hardware tested in industrial automation made it possible to obtain great operational robustness and guarantee for long-term maintenance. The adopted solution is based on a transputer tree-network. The interactions between telescope and observer are transparent and completely integrated in the observation software of the attached instrument.

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<title>Fully automated high-resolution spectroscopy at Swiss 1.2 m La Silla telescope</title>

Cited by 2 publications

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The discovery of two new benchmark brown dwarfs with precise dynamical masses at the stellar-substellar boundary

The discovery of two new benchmark brown dwarfs with precise dynamical masses at the stellar-substellar boundary

<title>Robust control system for the new 1.2-m telescopes of the Geneva Observatory</title>

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