High-resolution fiber-fed spectrographs

Панчук, В. Е.; Yushkin, M. V.; Yakopov, Mikhail

doi:10.1134/s1990341311030084

Cited by 34 publications

(15 citation statements)

References 28 publications

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“…The observations of HD 37737 with the 1.2-m telescope (D = 1.21 m, F = 12.0 m) of the Kourovka Astronomical Observatory of the Ural Federal University [4] using a fiber optic echelle spectrograph [5] were conducted in January-February 2012. Nine echelle spectra with the spectral resolution of R = 30 000 were obtained.…”

Section: Observations At Kao Ufu 12-m Telescopementioning

confidence: 99%

Orbital and physical parameters of the spectroscopic binary HD37737

et al. 2013

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d 84705) and the orbital elements of the binary system. We obtained an estimate of the mass function f (m) = 0.23 ± 0.02 M . The best agreement between the synthetic and observed spectra is achieved at T eff = 30 000 K and log g = 3.50 according to the observations on both instruments. The obtained parameters correspond to a star of spectral type O9.5 III, with mass estimated at 26 ± 2 M . The minimum mass estimate of the secondary component of the binary is 6.2 ± 0.5 M . We have discovered a fact that the velocities, obtained from different spectral lines, differ, which is typical for giant stars. Engaging additional spectra, obtained in 2005 with the 2.1-m KPNO telescope, we investigated the effect of this fact on the estimate of the speed of the system's center of mass. The difference in the velocities of various lines is approximately the same in the spectra, obtained at all the three instruments. The obtained ratios suggest that the deeper layers of the atmosphere of the star are moving with a greater velocity than the outer layers. Depending on the line, the estimate of the heliocentric velocity of the binary's center of mass varies in the range from −11 to 1 km/s.

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Section: Observations At Kao Ufu 12-m Telescopementioning

confidence: 99%

Orbital and physical parameters of the spectroscopic binary HD37737

et al. 2013

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“…The rightmost data point in Fig. 9 corresponds to the observations made during the 2010 test of the spectrograph on the 1-m telescope of the Special Astrophysical Observatory [1].…”

Section: Results Of the Testing Of The Instrument After The Upgradementioning

confidence: 99%

“…The spectrograph has been used as part of the standard instrument set since 2011. For a brief description of the instrument, the underlying ideas of its design, and the results of testing see [1,2].…”

Section: Initial Design Of the Spectrographmentioning

confidence: 99%

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Upgrade of the fiber-fed spectrograph of the Kourovka Astronomical Observatory

2014

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We report the results of testing the high-resolution fiber-fed spectrograph of Kourovka Astronomical Observatory of the Ural Federal University in 2010-2012 and the corresponding operation experience, and demonstrate the need for an upgrade of the instrument. We also describe the modifications that were made to the design of the spectrograph during the start of its regular operation in 2010 and the refurbishment of its suspended part carried out in 2013, which allowed to expand the capabilities of the instrument.

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“…The spectroscopic observations of CC Cas were carried out during the period from March 30, 2011 through March 29, 2012 using the high-resolution fiber-optical echelle spectrometer [9] (R = 30 000) of the alt-azimuth telescope (D = 1.21 m, F = 12.0 m) [10]. The detector employed was a CCD camera made at the Advanced Design Laboratory of the Special Astrophysical Observatory based on the E2V 40-42 CCD chip (2048 × 2048 px with a pixel size of 13.5 μm) cooled to the liquid-nitrogen temperature by the CRYOTIGER closed-loop system.…”

Section: Spectroscopic Observations and Primary Reductionmentioning

confidence: 99%

CCD spectrophotometry of CC Cas. I. Radial velocity curves

Gorda

2013

Astrophys. Bull.

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Abstract-We report the results of the first-ever CCD spectroscopic observations of the eclipsing variable CC Cas with massive early-type components. The measured semi-amplitudes of the radial velocity curves of the components, K 1 = 123.9 km/s and K 2 = 292.4 km/s, are comparable with the published data, and the center-of-mass velocity of the system was found to be V 0 = −20.4 km/s, which is about −10 km/s greater than the earlier published results. This fact may support the published hypothesis about the presence of a third body in the system.

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High-resolution fiber-fed spectrographs

Cited by 34 publications

References 28 publications

Orbital and physical parameters of the spectroscopic binary HD37737

Orbital and physical parameters of the spectroscopic binary HD37737

Upgrade of the fiber-fed spectrograph of the Kourovka Astronomical Observatory

CCD spectrophotometry of CC Cas. I. Radial velocity curves

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