SIMBAD references

2019ApJ...871...49H - Astrophys. J., 871, 49-49 (2019/January-3)

Precision distances to dwarf galaxies and globular clusters from Pan-STARRS1 3π RR Lyrae.

HERNITSCHEK N., COHEN J.G., RIX H.-W., MAGNIER E., METCALFE N., WAINSCOAT R., WATERS C., KUDRITZKI R.-P. and BURGETT W.

Abstract (from CDS):

We present new spatial models and distance estimates for globular clusters and dwarf spheroidals orbiting our Galaxy based on RR Lyrae (RRab) stars in the Pan-STARRS1 (PS1) 3π survey. Using the PS1 sample of RRab stars from Sesar et al. in 16 globular clusters and 5 dwarf galaxies, we fit structural models in (l, b, D) space; for 13 globular clusters and 6 dwarf galaxies, we give only their mean heliocentric distance D. We verify the accuracy of the period-luminosity relations used in Sesar et al. to constrain the distance to those stars, and compare them to period-luminosity-metallicity relations using metallicities from Carretta et al. We compare our Sesar et al. distances to the parallax-based Gaia DR2 distance estimates from Bailer-Jones et al. and find our distances to be consistent and considerably more precise.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): Galaxy: halo - globular clusters: general

Simbad objects: 52

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2021.06.19-07:49:35

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