VizieR Online Data Catalog: Two new Galactic lithium-rich Cepheids (Kovtyukh+, 2019)
Abstract
Our stars were observed with SALT on 2016 May 20 (ASAS J075842-2536.1) and on 2016 May 21 (ASAS J131714-6605.0) with the high-resolution echelle spectrograph (HRS) in single exposures of 2600s and 2672s, respectively, with a seeing of ~1.8arcsec. HRS is a dual beam, fibre-fed echelle spectrograph (Barnes et al. 2008SPIE.7014E..0KB; Bramall et al. 2010SPIE.7735E..4FB, 2012SPIE.8446E..0AB; Crause et al. 2014SPIE.9147E..6TC). In our observations, HRS was used in the medium-resolution mode (MR; R~37000-39000) and with a 2.23arcsec diameter for both the object and sky fibres to provide a spectrum in the blue and red arms over the total spectral range of ~3900-8900Å.
The two previously known Li-rich Cepheids were studied with spectra collected with the HERMES spectrograph (Raskin et al. 2011A&A...526A..69R) in the case of V371 Per and with the Espadons spectrograph in the case of V1033 Cyg. HERMES is an echelle spectrograph at the 1.2m Mercator telescope on la Palma. Our spectrum of V371 Per has a resolution of R=85000 and covers the 3800-8350Å wavelength range. Espadons is an echelle spectrograph at the Canada-France-Hawaii Telescope (CFHT, Donati et al. 2003ASPC..307...41D). Our spectrum of V1033 Cyg has a resolution of 80000 and covers the wavelength range 3700-10500Å. The observing log is given in Table 2. (4 data files).- Publication:
-
VizieR Online Data Catalog
- Pub Date:
- November 2022
- Bibcode:
- 2022yCat..74883211K
- Keywords:
-
- Stars: variable;
- Stars: distances;
- Effective temperatures;
- Radial velocities;
- Abundances;
- Spectra: optical