Results 11 to 20 of about 577 (218)
Variable Stars in Leo A: RR Lyrae Stars, Short-Period Cepheids, and Implications for Stellar Content
The Astronomical Journal, 2002 46 pages, 12 figures Accepted by ...
Dolphin, AE +8 more
core +5 more sources
Faint (and bright) variable stars in the satellites of the Milky Way
EPJ Web of Conferences, 2017 I describe two ongoing projects related with variable stars in the satellites of the MilkyWay. In the first project, we are searching for dwarf Cepheid stars (a.k.a δ Scuti and/or SX Phe) in some of the classical dwarf spheroidal galaxies. Our goal is to
Vivas A. Katherina
doaj +2 more sources
Variable stars in nearby galaxies [PDF]
Astronomy & Astrophysics, 2002 5 pages; accepted for publication in Astronomy and ...
Antonello, E. +4 more
openaire +3 more sources
A comparison of variable and non-variable stars in the cepheid strip. [PDF]
The Astrophysical Journal, 1974 Spectra of three Cepheids (RX Aur, X Cyg and T Mon) and 11 non -variable supergiants are analyzed. Additional evidence is presented for the presence of non -variables within the Cepheid strip. Temperatures determined from Ha line profiles and broad
E. G. Schmidt +2 more
openaire +2 more sources
Variable Stars in M31 Stellar Clusters from the Panchromatic Hubble Andromeda Treasury
The Astrophysical JournalVariable stars in stellar clusters can offer key constraints on stellar evolution and pulsation models, utilizing estimates of host cluster properties to constrain stellar physical parameters.
Richard Smith +11 more
doaj +2 more sources
An astrophysical investigation of four classical cepheid variable stars [PDF]
, 2017 Since Leavitt (1912 ) made the extraordinary finding that there was a correlation between the periods and the brightnesses of cepheid variables in the Small Magellanic Cloud, these stars have been an extremely important source of distance information ...
Schmidt, Edward G
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Period–Luminosity Relations for Galactic Classical Cepheids in the Sloan Bands
The Astrophysical Journal, 2023 We present the first period–luminosity (PL) and period–Wesenheit (PW) relations in the Sloan–Pan-STARRS g _P _1 r _P _1 i _P _1 bands for classical fundamental-mode Cepheids in the Milky Way.
Weronika Narloch +8 more
doaj +1 more source
Nonthermal X-Rays from Pulsation-driven Shocks in Cepheids
The Astrophysical Journal, 2023 Rapid X-ray phase-dependent flux enhancement in the archetype classical Cepheid star δ Cep was observed by XMM-Newton and Chandra. We jointly analyze thermal and nonthermal components of the time-resolved X-ray spectra prior to, during, and after the ...
Federico Fraschetti +3 more
doaj +1 more source
The strange evolution of the Large Magellanic Cloud Cepheid OGLE-LMC-CEP1812 [PDF]
, 2018 Classical Cepheids are key probes of both stellar astrophysics and cosmology as standard candles and pulsating variable stars. It is important to understand Cepheids in unprecedented detail in preparation for upcoming Gaia, James Webb Space Telescope ...
Neilson, Hilding R. +3 more
core +3 more sources
The Astrophysical Journal, 2023 Because of their period–luminosity relation (PLR), classical Cepheids play a key role in the calibration of the extragalactic distance scale and the determination of the Hubble–Lemaître constant H _0 .
Paulina Karczmarek +7 more
doaj +1 more source