Precision distances to dwarf galaxies and globular clusters from Pan-STARRS1 3$\pi$ RR Lyrae

Abstract

We present new spatial models and distance estimates for globular clusters (GC) and dwarf spheroidals (dSphs) orbiting our Galaxy based on RR Lyrae (RRab) stars in the Pan-STARRS1 (PS1) 3$\pi$ survey. Using the PS1 sample of RRab stars from Sesar et al. (2017) 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 (PL) relations used in Sesar et al. (2017) to constrain the distance to those stars, and compare them to period-luminosity-metallicity (PLZ) relations using metallicities from Carretta et al. (2009). We compare our Sesar et al. (2017) distances to the parallax-based \textit{Gaia} DR2 distance estimates from Bailer-Jones et al. (2018), and find our distances to be consistent and considerably more precise.

References in corpus (53)

• emcee: The MCMC Hammer
• Gaia Data Release 2. Summary of the contents and survey properties
• Measuring Reddening with SDSS Stellar Spectra and Recalibrating SFD
• The observed properties of dwarf galaxies in and around the Local Group
• The Pan-STARRS1 Photometric System
• The Kinematics of the Ultra-Faint Milky Way Satellites: Solving the Missing Satellite Problem
• Cats and Dogs, Hair and A Hero: A Quintet of New Milky Way Companions
• The Pan-STARRS1 Surveys
• Intrinsic iron spread and a new metallicity scale for Globular Clusters
• A comprehensive Maximum Likelihood analysis of the structural properties of faint Milky Way satellites
• Variable Stars in Galactic Globular Clusters
• The Milky Way's satellite population in a LambdaCDM universe
• The RR Lyrae Period-Luminosity Relation. I. Theoretical Calibration
• The feeble giant. Discovery of a large and diffuse Milky Way dwarf galaxy in the constellation of Crater
• Segue 2: A Prototype of the Population of Satellites of Satellites
• Machine-Learned Identification of RR Lyrae Stars from Sparse, Multi-band Data: the PS1 Sample
• A pulsational approach to near infrared and visual magnitudes of RR Lyrae stars
• The Draco and Ursa Minor dwarf spheroidals. A comparative study
• Globular Cluster Ages and the Formation of the Galactic Halo
• The Star Formation History and the spatial distribution of stellar populations in the Ursa Minor Dwarf Spheroidal Galaxy
• New insights on the Draco dwarf spheroidal galaxy from SDSS: a larger radius and no tidal tails
• The radial profile and flattening of the Milky Way's stellar halo to $80$kpc from the SEGUE K-giant Survey
• Precise Throughput Determination of the PanSTARRS Telescope and the Gigapixel Imager using a Calibrated Silicon Photodiode and a Tunable Laser: Initial Results
• At the survey limits: discovery of the Aquarius 2 dwarf galaxy in the VST ATLAS and the SDSS data
• A Map of Dust Reddening to 4.5 kpc from Pan-STARRS1
• Exploring the Variable Sky with LINEAR. II. Halo Structure and Substructure Traced by RR Lyrae Stars to 30 kpc
• The RR Lyrae Period - K Luminosity relation for Globular Clusters: an observational approach
• Globular Cluster Distances from RR Lyrae Stars
• On the distance of the globular cluster M4 (NGC 6121) using RR Lyrae stars: I. optical and near-infrared Period-Luminosity and Period-Wesenheit relations
• RR Lyrae variables: visual and infrared luminosities, intrinsic colours, and kinematics
• Theoretical insights into the RR Lyrae K-band Period-Luminosity relation
• The Stellar Populations and Structural Properties of Ultra Faint Dwarf Galaxies, Canes Venatici I, Bootes I, Canes Venatici II, and Leo IV
• The first all-sky view of the Milky Way stellar halo with Gaia+2MASS RR Lyrae
• The RR Lyrae Distance to the Draco Dwarf Spheroidal Galaxy
• The distance to the Sgr dwarf spheroidal galaxy from the Red Giant Branch Tip
• RR Lyrae Stars in the Bootes dSph
• The Geometry of Sagittarius Stream from Pan-STARRS1 3$\pi$ RR Lyrae
• On a new theoretical framework for RR Lyrae stars II: Mid--Infrared Period--Luminosity--Metallicity Relations
• Palomar 13's Last Stand
• Stellar Archaeology in the Galactic halo with the Ultra-Faint Dwarfs: VI. Ursa Major II
• Finding, characterizing and classifying variable sources in multi-epoch sky surveys: QSOs and RR Lyrae in PS1 3$\pi$ data
• The Profile of the Galactic Halo from Pan-STARRS1 3$\pi$ RR Lyrae
• Variable stars in the ultra-faint dwarf spheroidal galaxy Ursa Major I
• A Suprime-Cam study of the stellar population of Ursa Major I dwarf spheroidal galaxy
• Discovery of distant RR Lyrae stars in the Milky Way using DECam
• A Preliminary Calibration of the RR Lyrae Period-Luminosity Relation at Mid-Infrared Wavelengths: WISE Data
• On the distance of the globular cluster M4 (NGC 6121) using RR Lyrae stars: II. Mid-infrared period-luminosity relations
• Structural analysis of the Sextans dwarf spheroidal galaxy
• Mid-Infrared Period--Luminosity Relations of RR Lyrae Stars Derived from the AllWISE Data Release
• Galactic forces rule dynamics of Milky Way dwarf galaxies
• The Carnegie RR Lyrae Program: Mid-infrared Period-Luminosity relations of RR Lyrae stars in Reticulum
• RR Lyrae Variable Stars in the Crater II Dwarf Galaxy
• SMHASH: A new mid-infrared RR Lyrae distance determination for the Local Group dwarf spheroidal galaxy Sculptor

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• Accurate distances to Galactic globular clusters through a combination of Gaia EDR3, HST and literature data
• How Many Components? Quantifying the Complexity of the Metallicity Distribution in the Milky Way Bulge with APOGEE
• Metallicity and $\alpha$-element Abundance Gradients along the Sagittarius Stream as Seen by APOGEE
• MINESweeper: Spectrophotometric Modeling of Stars in the Gaia Era
• Search for RR Lyrae stars in DES ultra-faint systems: Grus I, Kim 2, Phoenix II, and Grus II
• First results on RR Lyrae stars with the TESS space telescope: untangling the connections between mode content, colors and distances
• Uncertainties associated with the backward integration of dwarf satellites using simple parametric potentials
• RR Lyrae variables in Messier 53: Near-infrared Period--Luminosity relations and the calibration using Gaia Early Data Release 3
• New LZ and PW(Z) relations of RR Lyrae stars calibrated with Gaia EDR3 parallaxes
• Timing the r-Process Enrichment of the Ultra-Faint Dwarf Galaxy Reticulum II
• On the absence of dark matter in dwarf galaxies surrounding the Milky Way
• Candidates for RR~Lyrae in binary systems from the OGLE Galactic bulge survey
• Gaia Parallax of Milky Way Globular Clusters -- A Solution of Mixture Model
• A fresh look at the RR Lyrae population in the Draco dwarf spheroidal galaxy with Gaia
• Frequency analysis of the first-overtone RR Lyrae stars based on the Extended Aperture Photometry from the K2 data
• J-PLUS: A catalogue of globular cluster candidates around the M81/M82/NGC3077 triplet of galaxies
• The VMC Survey -- LIV. Anomalous Cepheids in the Magellanic Clouds Period-Luminosity relations in the near-infrared bands
• Optical and near-infrared pulsation properties of RR Lyrae and Population II Cepheid variables in the Messier 15 globular cluster
• Dwarfs or giants? Stellar metallicities and distances in the Canada-France-Imaging-Survey from $ugrizG$ multi-band photometry