- ID:
- ivo://CDS.VizieR/J/A+A/639/A145
- Title:
- GALAH survey. FGK binary stars (Traven+, 2020)
- Short Name:
- J/A+A/639/A145
- Date:
- 30 Jun 2020 06:55:32
- Publisher:
- CDS
- Description:
- We here analyse a specific data-set: the extended GALAH dataset. This consists of stellar spectra from the GALAH survey (reduced as explained in Kos et al., 2017MNRAS.464.1259K), apparent magnitudes from a variety of photometric catalogues (AAVSO Photometric All Sky Survey - APASS; Henden et al. 2016, Cat. II/336, Gaia DR2; Gaia Collaboration et al. 2018, Cat. I/345. Two Micron All Sky Survey - 2MASS; Skrutskie et al. 2006, Cat. VII/233, Wide-field Infrared Survey Explorer - WISE; Wright et al. 2010, Cat. II/311), and the parallax measurements from Gaia DR2. The data provided in this catalogue are described in Table A.1 of the paper.
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- ID:
- ivo://CDS.VizieR/J/A+A/639/A157
- Title:
- Massive O-type stars near ZAMS elusive detection (Holgado+, 2020)
- Short Name:
- J/A+A/639/A157
- Date:
- 30 Jun 2020 06:56:58
- Publisher:
- CDS
- Description:
- List of the 285 stars with spectroscopic parameters obtained in this work. We performed an exhaustive search for spectra of these stars in modern high resolution spectroscopic databases. The spectrum with best quality, in terms of signal-to-noise ratio, was considered for the quantitative spectroscopic analysis and a multi-epoch characterization.
- ID:
- ivo://jvo/saga
- Title:
- SAGA -Stellar Abundances for Galactic Archeology Database-
- Short Name:
- SAGA
- Date:
- 14 Nov 2019 03:49:35
- Publisher:
- JVO
- Description:
- We describe the construction of a database of extremely metal-poor (EMP) stars in the Galactic halo whose elemental abundances have been determined. Our database contains detailed elemental abundances, reported equivalent widths, atmospheric parameters, photometry, and binarity status, compiled from papers in the recent literature that report studies of EMP halo stars with [Fe/H] < -2.5. The compilation procedures for this database have been designed to assemble the data effectively from electronic tables available from online journals. We have also developed a data retrieval system that enables data searches by various criteria, and permits the user to explore relationships between the stored variables graphically. Currently, our sample includes 1212 unique stars (many of which are studied by more than one group) with more than 15000 individual reported elemental abundances, covering all of the relevant papers published by December 2007. We discuss the global characteristics of the present database, as revealed by the EMP stars observed to date. For stars with [Fe/H] < -2.5, the number of giants with reported abundances is larger than that of dwarfs by a factor of two. The fraction of carbon-rich stars (among the sample for which the carbon abundance is reported) amount to ~30 % for [Fe/H] < -2.5. We find that known binaries exhibit different distributions of orbital period, according to whether they are giants or dwarfs, and also as a function of metallicity, although the total sample of such stars is still quite small.
