Results 1 to 10 of about 22,464 (162)

Hubble Space TelescopeFine Guidance Sensor Parallaxes of Galactic Cepheid Variable Stars: Period-Luminosity Relations [PDF]

open access: bronze, 2007
We present new absolute trigonometric parallaxes and relative proper motions for nine Galactic Cepheid variable stars: ℓ Car, ζ Gem, β Dor, W Sgr, X Sgr, Y Sgr, FF Aql, T Vul, and RT Aur.
G. F. Benedict   +8 more
openalex   +3 more sources

A three-dimensional map of the Milky Way using classical Cepheid variable stars [PDF]

open access: greenScience, 2019
Cepheids help to map the Galaxy Cepheid variable stars pulsate, which allows their distances to be determined from the periodic variations in brightness. Skowron et al. constructed a catalog of thousands of Cepheids covering a large fraction of the Milky
Dorota M. Skowron   +23 more
openalex   +3 more sources

Three classical Cepheid variable stars in the nuclear bulge of the Milky Way [PDF]

open access: greenNature, 2011
The nuclear bulge is a region with a radius of about 200 parsecs around the centre of the Milky Way. It contains stars with ages ranging from a few million years to over a billion years, yet its star-formation history and the triggering process for star ...
Noriyuki Matsunaga   +8 more
openalex   +2 more sources

Discovery of the Longest-period Classical Cepheid in the Milky Way [PDF]

open access: yesThe Astrophysical Journal Letters
We report the discovery of the classical Cepheid OGLE-GD-CEP-1884 (= GDS_J1535467-555656) with the longest pulsation period known in our Galaxy. The period of 78.14 days is nearly 10 days longer than that of the previous record-holding Cepheid, S ...
I. Soszyński   +14 more
doaj   +2 more sources

The evolution of the Galactic nuclear bulge traced by Cepheid variable stars [PDF]

open access: diamond, 2012
The Galactic nuclear bulge hosts significant populations of young stars, within a few hundred parsecs around the Galactic Centre, unlike the more extended bulge.
Noriyuki Matsunaga
openalex   +2 more sources

An Exercise on the Use of Cepheid Variable Stars As Astronomical Distance Indicators for Introductory Earth-Science Classes

open access: hybrid, 1992
In an effort to provide additional opportunities for active, cooperative learning by students in introductory earth-science classes, I have developed an exercise on the use of cepheid-variable stars as distance indicators. Cepheid-variable stars were the
James H. Shea
openalex   +2 more sources

The OGLE Collection of Variable Stars. Classical, Type II, and Anomalous\n Cepheids toward the Galactic Center [PDF]

open access: green, 2017
We present a collection of classical, type II, and anomalous Cepheids detected in the OGLE fields toward the Galactic center. The sample contains 87 classical Cepheids pulsating in one, two or three radial modes, 924 type II Cepheids divided into BL Her,
I. Soszyński   +13 more
openalex   +3 more sources

Variable Stars in M13. III. The Cepheid Variables and their Relation to Evolutionary Changes in Metal-poor BL Her Stars [PDF]

open access: green, 2019
New CCD photometry has been combined with published and unpublished earlier observations to study the three Cepheid variables in M13: V1, V2 and V6. The light curve characteristics in $B$, $V$ and $I_{\rm C}$ have been determined and the periods updated.
W. Osborn   +5 more
openalex   +2 more sources

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