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RR Lyrae stars as tracers of halo substructures

  • Sonia Duffau
  • , A. Katherina Vivas
  • , Camila Navarrete
  • , Julio Carballo-Bello
  • , Gergel Hajdu
  • , Márcio Catelan

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Three RR Lyrae overdensity candidates in the southern sky have been studied using low resolution spectra obtained with the Goodman spectrograph at SOAR. We search for unidentified velocity peaks indicative of the possible presence of streams within the overdensities. Our results suggest that all three overdensities present an excess of radial velocity signal at high mean radial velocities which cannot be explained as a contribution from any known Galactic component.

Original languageEnglish
Title of host publicationWide-Field Variability Surveys
Subtitle of host publicationA 21st Century Perspective - 22nd Los Alamos Stellar Pulsation - Conference Series Meeting
EditorsWolfgang Gieren, Marcio Catelan, Wolfgang Gieren, Marcio Catelan
PublisherEDP Sciences
ISBN (Electronic)9782759890248
DOIs
StatePublished - 8 Sep 2017
Externally publishedYes
Event22nd Los Alamos Stellar Pulsation Conference Series Meeting 2016 - San Pedro de Atacama, Chile
Duration: 28 Nov 20162 Dec 2016

Publication series

NameEPJ Web of Conferences
Volume152
ISSN (Print)2101-6275
ISSN (Electronic)2100-014X

Conference

Conference22nd Los Alamos Stellar Pulsation Conference Series Meeting 2016
Country/TerritoryChile
CitySan Pedro de Atacama
Period28/11/162/12/16

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