VizieR Online Data Catalog: Radial velocities of HD 54371, HR 2692, and 16 UMa (Fekel+, 2015)
Abstract
We obtained our observations of the three program stars at three observatories. Most of our spectrograms were acquired from 2003 through 2014 at Fairborn Observatory near Washington Camp in southeast Arizona with the Tennessee State University 2m automatic spectroscopic telescope (AST) and fiber-fed echelle spectrograph. Initially, the detector was a 2048*4096 SITe ST-002A CCD with 15μm pixels. Those AST echelle spectrograms have 21 orders that span the wavelength region 4920-7100Å and have an average resolution of 0.17Å or a resolving power of 35000 at 6000Å. The S/N of these observations at 6000Å generally ranged from 40 to 60. The SITe CCD and its dewar were removed from the AST in the summer of 2011. They were replaced by a Fairchild 486 CCD having a 4096*4096 array of 15μm pixels and a new dewar. The new echelle spectrograms have 48 orders that range from 3800 to 8260Å. We also installed a 200μm diameter fiber that produces a resolution of 0.24Å or a resolving power of 25000 at 6000Å for the new echelle spectra. Observations with the new detector, dewar, and fiber resulted in much improved S/N that, depending on sky conditions, ranged from 100 to 200 at 6000Å.
Spanning the years 2000-2004, Abt & Willmarth 2006 (cat. J/ApJS/162/207) acquired additional spectrograms of the three binaries at Kitt Peak National Observatory (KPNO) as part of a survey of solar-type stars that examined their binary frequency and mass ratio distribution. They obtained those observations with the 0.9m coude feed telescope, coude spectrograph, and a CCD detector identified as F3KB. The spectra covered 320Å, centered on 5200Å, and had a resolution of 0.11Å/pixel or a 2 pixel resolving power of 24000. The S/N of the spectra ranged from 40 to 80. In 2002 and 2003 we collected several spectrograms at McDonald Observatory with the 2.1m telescope, the Sandiford Cassegrain echelle spectrograph, and a Reticon CCD. The wavelength region covered by those spectra ranges from 5700 to 7000Å. They have a resolution of 0.13Å that corresponds to a resolving power of 49000 at 6350Å. At that central wavelength, the S/N of the spectra are ~200. Finally, from 2003 through 2007 we acquired several additional spectra at KPNO with the coude feed telescope, coude spectrograph, and a Texas Instruments CCD detector. Those spectra are centered at 6430Å, cover a wavelength range of 84Å, and have a resolution of 0.21Å or a resolving power of just over 30000. They have S/N of ~150. (4 data files).- Publication:
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VizieR Online Data Catalog
- Pub Date:
- February 2015
- DOI:
- 10.26093/cds/vizier.51490063
- Bibcode:
- 2015yCat..51490063F
- Keywords:
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- Binaries: spectroscopic;
- Radial velocities