LOW-AMPLITUDE VARIABLES: DISTINGUISHING RR LYRAE STARS FROM ECLIPSING BINARIES
The Astronomical Journal, 2010 12 pages, accepted to ...
Kinman, T. D., Brown, Warren R.
openaire +2 more sources
The Changing Lightcurve of the Double-mode RR Lyrae Variable Star V338 Boo [PDF]
The Astrophysical Journal Letters, 2021 Abstract We present an analysis of the lightcurve extracted from Transiting Exoplanet Survey Satellite (TESS) Full Frame Images (FFIs) of the double-mode RR Lyrae V338 Boo. We find that the fundamental mode pulsation is changing in amplitude across the 54 days of observations. The first overtone mode pulsation also changes, but on a much
Kenneth Carrell +5 more
openaire +2 more sources
Pulsating stars in ω Centauri. Near-IR properties and period-luminosity relations
EPJ Web of Conferences, 2017 ω Centauri (NGC 5139) contains many variable stars of different types, including the pulsating type II Cepheids, RR Lyrae and SX Phoenicis stars. We carried out a deep, wide-field, near-infrared (IR) variability survey of ω Cen, using the VISTA telescope.
Navarrete Camila +6 more
doaj +1 more source
On the RR Lyrae Stars in Globulars. V. The Complete Near-infrared (JHKs) Census of ω Centauri RR Lyrae Variables* [PDF]
The Astronomical Journal, 2018 Abstract We present a new complete near-infrared (NIR, JHK s ) census of RR Lyrae stars (RRLs) in the globular ω Cen (NGC 5139). We collected 15,472 JHK s images with 4–8 m class telescopes over 15 years (2000–2015 ...
V. F. Braga +37 more
openaire +6 more sources
Photometry of Variable Stars from THU-NAOC Transient Survey I: The First 2 Years [PDF]
, 2015 In this paper, we report the detections of stellar variabilities from the first 2-year observations of sky area of about 1300 square degrees from the Tsinghua University-NAOC Transient Survey (TNTS). A total of 1237 variable stars (including 299 new ones)
Chen, Juncheng +11 more
core +2 more sources
Progress report on the K2 RR Lyrae survey
EPJ Web of Conferences, 2017 We have initiated a large survey with K2, to observe thousands of RR Lyrae stars along the ecliptic. The high photometric precision and the 70-90-day continuous coverage will allow us to investigate the light variation of these galactic structure tracer ...
Szabó Róbert
doaj +1 more source
Variability in NGC 3201 Giant Stars
The Astronomical Journal, 2023 We present the analysis of 510 light curves in V and I bands of 255 giant stars in the globular cluster NGC 3201. Our aim is to expand the sample of new types of variables reported in a previous study. These variables show a short period ( P _V < 0.6 day)
C. C. Cortés +4 more
doaj +1 more source
RR Lyrae Variables in the Globular Cluster M55. The First Evidence for Nonradial Pulsations in RR Lyr Stars [PDF]
International Astronomical Union Colloquium, 1999 AbstractWe present the results of a photometric study of RR Lyrae variables in the field of the globular cluster M55. We have discovered nine new RR Lyrae stars, increasing the number of known variables in this cluster to 15 objects. Five of the newly discovered variables belong to Bailey type RRc and two to type RRab.
Olech, A. +5 more
openaire +2 more sources
RR Lyrae binary systems in the Galactic bulge
EPJ Web of Conferences, 2017 The possibility of a direct mass measurement of RR Lyrae variable stars in binary systems has remained elusive for many years, due to the apparent paucity of such systems.
Hajdu Gergely, Catelan Márcio
doaj +1 more source
The Determination Of Reddening From Intrinsic VR Colors Of RR Lyrae Stars [PDF]
, 2009 New R-band observations of 21 local field RR Lyrae variable stars are used to explore the reliability of minimum light (V-R) colors as a tool for measuring interstellar reddening.
Alcock +34 more
core +3 more sources