Variable stars in Local Group Galaxies – I. Tracing the early chemical enrichment and radial gradients in the Sculptor dSph with RR Lyrae stars [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 Matteo Monelli +2 more
exaly +2 more sources
Identifying RR Lyrae Variable Stars in Six Years of the Dark Energy Survey [PDF]
Astrophysical Journal, 2021 Katelyn M Stringer +2 more
exaly +2 more sources
A geometric framework for outlier detection in high‐dimensional data
WIREs Data Mining and Knowledge Discovery, Volume 13, Issue 3, May/June 2023., 2023 A geometric framework exploiting the metric structure of a data set allows to (1) conceptualize outlier detection on a general level and (2) to conduct outlier detection in a principled and canonical way in very different high‐dimensional and/or non‐tabular data types such as functions (A.1), graphs (B.1), or images (C.1).
Moritz Herrmann +2 more
wiley +1 more source
RR Lyrae Stars and Anomalous Cepheids as Population Tracers in Local Group Galaxies
Universe, 2022 We discuss the use and importance of pulsating variable stars as population tracers in Local Group galaxies. Among bright variable crossing the classical instability strip, we mostly focus on RR Lyrae stars and Anomalous Cepheids.
Matteo Monelli, Giuliana Fiorentino
doaj +1 more source
Modulation of the Blazhko Cycle in LS Her
The Astronomical Journal, 2023 We present analysis of the RR Lyrae star, LS Her, and confirm the previously reported modulation to its Blazhko cycles. We performed Fourier analysis on two sectors (Sector 24 and 25) of data from the Transiting Exoplanet Survey Satellite (TESS) spanning
Ronald Wilhelm +10 more
doaj +1 more source
Little Bear’s pulsating stars: Variable star census of UMi dSph Galaxy
EPJ Web of Conferences, 2017 Recent observations and a photometric search for variable stars in the Ursa Minor dwarf spheroidal galaxy (UMi dSph) are presented. Our observations were taken at Apache Point Observatory in 2014 and 2016 using the 0.5m ARCSAT telescope and the West ...
Kinemuchi K. +4 more
doaj +1 more source
Study of the Blazhko Type RRc stars in the Stripe 82 Region Using SDSS and ZTF
The Astronomical Journal, 2023 RR Lyrae stars (RRLs) are pulsating stars, many of which also show a long-term variation called the Blazhko effect which is a modulation of amplitude and phase of the lightcurve.
Vaidehi Varma +2 more
doaj +1 more source
A Study of Double- and Multi-mode RR Lyrae Variables
Open Astronomy, 2015 We present the results of our new study of known RR Lyrae variable stars. All observations available for these stars in the Catalina Surveys were analyzed, and double-mode variations were identified.
Khruslov A. V.
doaj +1 more source
PLATO as it is: A legacy mission for Galactic archaeology
Astronomische Nachrichten, Volume 338, Issue 6, Page 644-661, July 2017., 2017 Deciphering the assembly history of the Milky Way is a formidable task, which becomes possible only if one can produce high‐resolution chrono‐chemo‐kinematical maps of the Galaxy. Data from large‐scale astrometric and spectroscopic surveys will soon provide us with a well‐defined view of the current chemo‐kinematical structure of the Milky Way, but it ...
A. Miglio +104 more
wiley +1 more source
CCD SDSS gr Photometry of Poorly Studied Star Clusters in the Large Magellanic Cloud
International Scholarly Research Notices, Volume 2014, Issue 1, 2014., 2014 We present for the first time CCD SDSS gr photometry, obtained at the Gemini South telescope with the GMOS attached, of stars in the field of the poorly studied star clusters NGC1768, HS 85, SL 676, NGC2107, NGC2190, and SL 866, which are distributed in the main body of the Large Magellanic Cloud.
Andrés E. Piatti, M. Marconi, L. Pulone
wiley +1 more source