Results 101 to 110 of about 363 (172)

Photometric Metallicity and Distance for the Two RR Lyrae in Segue II and Ursa Major II Dwarf Galaxies Based on Multiband Light Curves

The Astronomical Journal
Multiband light curves of two RR Lyrae variables in Segue II and Ursa Major II ultrafaint dwarf galaxies were collected from near simultaneous observations using the Lulin One-meter Telescope in Vgri bands.
Chow-Choong Ngeow, Anupam Bhardwaj
doaj   +1 more source

The Evolutionary Status of M3 RR Lyrae Variable Stars: Breakdown of the Canonical Framework?

The Astrophysical Journal, 2004
8 figures, 11 pages. Uses latest emulateapj.cls style file (included, 05/14/03) and apjfonts.sty (also included). The full-resolution preprint can be downloaded from http://www.astro.puc.cl/~mcatelan/.
openaire   +5 more sources

Stellar Atmospheric Parameters of ∼11,000 RR Lyrae Stars from LAMOST Spectra

The Astrophysical Journal Supplement Series
Accurate determination of the stellar atmospheric parameters of RR Lyrae stars (RRLs) requires short individual exposures of the spectra to mitigate pulsation effects.
Jiangtao Wang, Jianrong Shi, Jianning Fu, Weikai Zong, Chunqian Li   +4 more
doaj   +1 more source

Variable stars in the Gaia era: Mira, RR Lyrae, δ and Type-II Cepheids [PDF]

, 2017
Martin A. T. Groenewegen
openalex   +1 more source

Color–Magnitude Diagram of NGC 205 and Its RR Lyrae Variables

The Astronomical Journal
We present the deepest color–magnitude diagram (CMD) for NGC 205 in the F606W (≈ V ) and F814W (≈ I ) filters. Our archival Hubble Space Telescope/Advanced Camera for Surveys field is centered ∼3 $\mathop{.}\limits^{{\rm{^{\prime} }}}$ 8 northwest of the
Ata Sarajedini
doaj   +1 more source

Data smashing: uncovering lurking order in data. [PDF]

J R Soc Interface, 2014
Chattopadhyay I, Lipson H.
europepmc   +1 more source

The Lack of RR Lyrae Variables in Ultrafaint Dwarf Galaxy Sextans II

The Astronomical Journal
RR Lyrae in ultrafaint dwarf (UFD) galaxies, if found, would be valuable to constrain the distances of these UFD. In this work, we report our search of RR Lyrae in a recently discovered UFD—Sextans II. Based on multiband (griz) time-series archival DECam
Chow-Choong Ngeow, Anupam Bhardwaj
doaj   +1 more source

RR Lyrae Stars in Galactic Globular Clusters. II. A Theoretical Approach to Variables in M3 [PDF]

, 2003
M. Marconi, F. Caputo, M. Di Criscienzo, M. Castellani   +3 more
openalex   +1 more source

The Hubble Constant. [PDF]

Living Rev Relativ, 2015
Jackson N.
europepmc   +1 more source

First Detection of Shock Waves in RRc Stars

The Astrophysical Journal
Although shock waves have been well documented in fundamental-mode RRab stars, their existence in first-overtone pulsator stars, RRc stars, has remained uncertain. Building upon the spectroscopic frameworks established by M. Chadid et al., we present the
Junzhang Li, Merieme Chadid
doaj   +1 more source