Near-Field Cosmology with RR Lyrae Variable Stars: A First View of Substructure in the Southern Sky

Camila Andrea Navarrete Silva

doi:10.1017/S1743921315007012

Near-Field Cosmology with RR Lyrae Variable Stars: A First View of Substructure in the Southern Sky

Camila Andrea Navarrete Silva

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

We present the current status of the spectroscopic follow-up of a large number of RR Lyrae (RRL) halo overdensity candidates recently found by Torrealba et al. (2015) using southern-hemisphere data from the Catalina Real-time Transient Survey (CRTS). Characterizing the individual RRL stars in these overdensities is crucial to confirm them as real halo substructures. Low-resolution spectra have been obtained for RRL stars in 11 different overdensities, using the SOAR and Magellan telescopes. Radial velocities and metallicities have been derived so far for 123 and 99 RRL stars, respectively.

Original language	Undefined/Unknown
Title of host publication	The General Assembly of Galaxy Halos: Structure, Origin and Evolution
Pages	338 - 339
Volume	11
Edition	317
DOIs	https://doi.org/10.1017/S1743921315007012
State	Published - 9 Aug 2016

Access to Document

10.1017/S1743921315007012

Cite this

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title = "Near-Field Cosmology with RR Lyrae Variable Stars: A First View of Substructure in the Southern Sky",

abstract = "We present the current status of the spectroscopic follow-up of a large number of RR Lyrae (RRL) halo overdensity candidates recently found by Torrealba et al. (2015) using southern-hemisphere data from the Catalina Real-time Transient Survey (CRTS). Characterizing the individual RRL stars in these overdensities is crucial to confirm them as real halo substructures. Low-resolution spectra have been obtained for RRL stars in 11 different overdensities, using the SOAR and Magellan telescopes. Radial velocities and metallicities have been derived so far for 123 and 99 RRL stars, respectively.",

author = "\{Navarrete Silva\}, \{Camila Andrea\}",

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language = "Undefined/Unknown",

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N2 - We present the current status of the spectroscopic follow-up of a large number of RR Lyrae (RRL) halo overdensity candidates recently found by Torrealba et al. (2015) using southern-hemisphere data from the Catalina Real-time Transient Survey (CRTS). Characterizing the individual RRL stars in these overdensities is crucial to confirm them as real halo substructures. Low-resolution spectra have been obtained for RRL stars in 11 different overdensities, using the SOAR and Magellan telescopes. Radial velocities and metallicities have been derived so far for 123 and 99 RRL stars, respectively.

AB - We present the current status of the spectroscopic follow-up of a large number of RR Lyrae (RRL) halo overdensity candidates recently found by Torrealba et al. (2015) using southern-hemisphere data from the Catalina Real-time Transient Survey (CRTS). Characterizing the individual RRL stars in these overdensities is crucial to confirm them as real halo substructures. Low-resolution spectra have been obtained for RRL stars in 11 different overdensities, using the SOAR and Magellan telescopes. Radial velocities and metallicities have been derived so far for 123 and 99 RRL stars, respectively.

U2 - 10.1017/S1743921315007012

DO - 10.1017/S1743921315007012

M3 - Conference contribution

VL - 11

SP - 338

EP - 339

BT - The General Assembly of Galaxy Halos: Structure, Origin and Evolution

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