Interstellar Reddening Effect on the Age Dating of Population II Stars
AbstractThe age measurement of the stellar halo component of the Galaxy is based mainly on the comparison of the main sequence turn-off luminosity of the globular cluster (GC) stars with theoretical isochrones. The standard procedure includes a vertical shift, in order to account for the distance and extinction to the cluster, and a horizontal one, to compensate the reddening. However, the photometry is typically performed with broad-band filters where the shape of the stellar spectra introduces a shift of the effective wavelength response of the system, dependent on the effective temperature (or color index) of the star. The result is an increasing distortion—actually a rotation and a progressive compression with the temperature—of the color-magnitude diagrams relatively to the standard unreddened isochrones, with increasing reddening. This effect is usually negligible for reddening
Scifeed alert for new publicationsNever miss any articles matching your research from any publisher
- Get alerts for new papers matching your research
- Find out the new papers from selected authors
- Updated daily for 49'000+ journals and 6000+ publishers
- Define your Scifeed now
Ortolani, S.; Cassisi, S.; Salaris, M. Interstellar Reddening Effect on the Age Dating of Population II Stars. Galaxies 2017, 5, 28.
Ortolani S, Cassisi S, Salaris M. Interstellar Reddening Effect on the Age Dating of Population II Stars. Galaxies. 2017; 5(3):28.Chicago/Turabian Style
Ortolani, Sergio; Cassisi, Santi; Salaris, Maurizio. 2017. "Interstellar Reddening Effect on the Age Dating of Population II Stars." Galaxies 5, no. 3: 28.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.