Tag Archive for 'Classical Cepheid'

This artist’s impression shows the evolution of the Universe beginning with the Big Bang on the left followed by the appearance of the Cosmic Microwave Background. The formation of the first stars ends the cosmic dark ages, followed by the formation of galaxies. Image credit: M. Weiss / Harvard-Smithsonian Center for Astrophysics.

Webb Validates Hubble’s Distance Measurements

Dec 11, 2024 by News Staff

New observations from the NASA/ESA/CSA James Webb Space Telescope confirms previous measurements by the NASA/ESA Hubble Space Telescope of distances between...

This Hubble image shows NGC 2090, a spiral galaxy some 40 million light-years away in the southern constellation of Columba. The color image was made from separate exposures taken in the ultraviolet, visible and near-infrared regions of the spectrum with Hubble’s Wide Field Camera 3 (WFC3). It is based on data obtained through six filters. The color results from assigning different hues to each monochromatic image associated with an individual filter. Image credit: NASA / ESA / Hubble / D. Thilker.

Hubble Space Telescope Looks at Flocculent Spiral: NGC 2090

Nov 25, 2024 by Enrico de Lazaro

Astronomers using the NASA/ESA Hubble Space Telescope have captured an amazing new photo of the spiral galaxy NGC 2090. This Hubble image shows NGC 2090,...

This Hubble image shows NGC 4414, an unbarred spiral galaxy located 51 million light-years away in the constellation of Coma Berenices. Image credit: NASA / ESA / Hubble / O. Graur / S.W. Jha / A. Filippenko.

Hubble Revisits Majestic Spiral Galaxy: NGC 4414

Oct 28, 2024 by Enrico de Lazaro

Astronomers using the NASA/ESA Hubble Space Telescope have captured a magnificent new image of the unbarred spiral galaxy NGC 4414. This Hubble image shows...

This false-color image of Polaris, captured by the CHARA Array in April 2021, reveals large bright and dark spots on the star’s surface. Image credit: Evans et al., doi: 10.3847/1538-4357/ad5e7a.

Astronomers Find Spots on Surface of Polaris

Aug 20, 2024 by News Staff

Astronomers using the Center for High Angular Resolution Astronomy (CHARA) Array have observed Polaris, a member of a triple system and the nearest and...

Astronomers Create New 3D Map of Milky Way Galaxy

Aug 2, 2019 by News Staff

By measuring the distance from the Sun to thousands of classical Cepheid stars and the associated young stellar populations scattered across the Milky...

This image shows the entire Large Magellanic Cloud, with some of the brightest objects marked. Image credit: Robert Gendler / ESO.

Universe is Expanding 9% Faster than Expected, New Hubble Measurements Show

Apr 26, 2019 by News Staff

Measurements of today’s expansion rate do not match the rate that was expected based on how the Universe appeared shortly after the Big Bang over 13...

From a great distance, our Milky Way Galaxy would look like a thin disk of stars that orbits once every few hundred million years around its central region, where hundreds of billions of stars provide the gravitational ‘glue’ to hold it all together. But this pull of gravity is much weaker in the Galaxy’s far outer disk. There, the hydrogen atoms making up most of the Milky Way’s gas disk are no longer confined to a thin plane, instead they give the disk an S-like, or warped, appearance. Image credit: Xiaodian Chen.

New 3D Map of Milky Way Reveals True Shape of Its Stellar Disk

Feb 5, 2019 by News Staff

An international team of astronomers has used 1,339 classical Cepheid stars — pulsating variable stars each up to 100,000 brighter than our Sun —...

An artist’s concept of the implied distribution of Cepheids (blue) in the Milky Way. With the exception of a small clump in the Galactic center, the central 8,000 light years appear to have very few Cepheids, and hence very few young stars. Image credit: University of Tokyo.

Large Stellar Void Found in Our Milky Way Galaxy

Aug 4, 2016 by News Staff

An international team of astronomers has found that there is a huge region in the inner part of the Galactic disc that is devoid of stars known as Cepheids. An...

This diagram shows the locations of the newly-discovered Cepheids in an artist’s rendering of our Milky Way Galaxy; the yellow star indicates the position of our Solar System. Image credit: ESO / Microsoft WorldWide Telescope.

Astronomers Discover New Component of Milky Way Galaxy

Oct 28, 2015 by News Staff

Using data from the VISTA Variables in the Via Lactea Survey (VVV) ESO Public Survey, astronomers have discovered a previously unknown component of the...