News tagged with cepheid

The dusty disc of NGC 247

This image of NGC 247, taken by the Wide Field Imager on the MPG/ESO 2.2-metre telescope at ESO's La Silla Observatory in Chile, reveals the fine details of this highly inclined spiral galaxy and its rich ...

Mar 02, 2011 5 / 5 (3) 0 | with audio podcast

The little Cepheid that stopped

When Hubble first discovered a Cepheid variable in the galaxy M31, the universe grew. Previously, many astronomers had held that the fuzzy “spiral nebulae” were small patches of gas and dust within ...

Jan 14, 2011 4.8 / 5 (5) 3

A New class for Tau Scorpii

Many classes of stars are named for an early, distinguished member of a certain type of stars. For example, Cepheid variables take their namesake from the periodic variable Delta Cephei, first recognized by ...

Dec 22, 2010 5 / 5 (4) 0

Pulsating star mystery solved

(PhysOrg.com) -- By discovering the first double star where a pulsating Cepheid variable and another star pass in front of one another, an international team of astronomers has solved a decades-old mystery. ...

Nov 24, 2010 4.9 / 5 (21) 5 | with audio podcast

The Polaris Cluster

(PhysOrg.com) -- A Cepheid star is one whose mass and age results in physical conditions that generate periodic oscillations in its photosphere. A Cepheid thus varies regularly in brightness, with a period ...

May 28, 2010 5 / 5 (2) 0 | with audio podcast