VizieR Online Data Catalog: BD+37 410 & DS And light curve and radial velocity (Sandquist+, 2023)
Abstract
We made primary use of photometry from the Transiting Exoplanet Survey Satellite (TESS) taken in sector 18 of the northern hemisphere campaign. Our ground-based photometric observations of DS And were taken with the 1m telescope at Mount Laguna Observatory with the CCD 2005 camera. This camera uses a 2048x2048 CCD with a field of view approximately 13.5' on a side. Observations were taken during the course of one season in 2010 with the intention of fully covering eclipse phases in BVRCIC filters, along with sparser coverage of out-of-eclipse phases. We took additional observations at the 1m telescope in U during 2020 in order to constrain the spectral energy distribution for the component stars. Finally, we used light curves from the Wide Field Infrared Explorer (WISE) in the W1 and W2 bandpasses.
For DS And, we obtained 17 spectra at the Hobby-Eberly Telescope (HET) with the High Resolution Spectrograph (HRS) between 2010 August and 2011 September. Exposure times ranged from 1260 to 12240s, and we only used the wavelength range 4825-5760Å (R=30000). We also reanalyzed 15 observations of DS And taken using the Fiber-fed Echelle Spectrograph (FIES) on the 2.56m Nordic Optical Telescope (NOT) in 2007 August, and 2008 July-November. For BD +37 410, our primary source for velocity measurements was previously unpublished spectra taken with Hydra multifiber echelle spectrograph on the 3.5m WIYN telescope at Kitt Peak National Observatory between 2001 August 18 and 2009 September 30. The spectra covered 4990-5250Å near the MgI b triplet. Typically, 8-10 exposures of around 1800s were taken each night of observations, and had high signal-to-noise ratios. After some experimentation, we settled on the 4990-5177Å range for our analysis as this appeared to provide the best signal on the fainter secondary star. (2 data files).- Publication:
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VizieR Online Data Catalog
- Pub Date:
- March 2023
- Bibcode:
- 2023yCat..51650006S
- Keywords:
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- Clusters: open;
- Stars: double and multiple;
- Spectra: optical;
- Photometry: UBVRIJKLMNH;
- Radial velocities