VizieR Online Data Catalog: GC hot UV-bright stars model spectra (Moehler+, 2019)
Abstract
Optical medium- and low-resolution spectra (flux-calibrated and normalized) of 13 UV bright stars in globular clusters are presented together with the atmospheric parameters derived from them. The following globular clusters have been observed: NGC5139, NGC6121, NGC6656, NGC6712, NGC6779, NGC7099. The flux-calibrated spectra were corrected to laboratory wavelengths and their continua were normalized. Effective temperatures, surface gravities, and helium abundances were derived from line profile fits and the corresponding best-fitting model spectra are also presented here. We also present post-helium core burning evolutionary sequences calculated low mass stars for [M/H] = -2.3, -2.0, -1.5, -1.0.
Grid of post-horizontal branch evolutionary sequences for four different metallicities. Models at the Zero Age Horizontal Branch (ZAHB) were constructing by removing mass at the tip of the Red Giant Branch (RGB). Details about the initial model on the main sequence are provided in table B.1 of the article. Each file contains all the sequences with a given initial metallicity and are named as CDSFeH-1.0.dat, CDSFeH-1.5.dat, CDSFeH-2.0.dat, and CDSFeH-2.3.dat (corresponding to metallicities [Fe/H]=-1, -1.5, -2, -2.3, see Table 8 of the Article) All sequences are presented at similar timesteps Sequences are presented until their luminosity drops to 10 solar luminosities. (11 data files).- Publication:
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VizieR Online Data Catalog
- Pub Date:
- May 2019
- DOI:
- 10.26093/cds/vizier.36270034
- Bibcode:
- 2019yCat..36270034M
- Keywords:
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- Models;
- Clusters: globular;
- Populations: stellar;
- Ultraviolet;
- Spectroscopy