Subscribe to our free daily newsletters
. 24/7 Space News .




Subscribe to our free daily newsletters



STELLAR CHEMISTRY
Polish astronomers attempt to solve pulsating blue stars puzzle
by Brooks Hays
Washington (UPI) Aug 9, 2017


file image

A team of astronomers is trying to account for a mysterious new class of rapidly pulsating blue stars.

Researchers first discovered the unusual pulsating stars -- detailed this week in the journal Nature Astronomy -- during a 2013 survey.

Since then, the team of Polish scientists have returned to the Chilean desert several times to get a better grasp on what makes these stars tick.

Unlike the sun, pulsating stars aren't stable. They periodically expand and contract -- growing and shrinking, brightening and dimming. Cepheids and RR Lyrae stars feature surface oscillation periods between a few hours and several hundred days. But the newly discovered class of stars features oscillation periods as brief as 20 to 40 minutes.

In addition to their past paced pulsation, the new stars are hotter, more compact and bluer in color.

"The objects are significantly bluer than main-sequence stars observed in the same fields, which indicates that all of them are hot stars," astronomer wrote in their newly published paper.

In their new paper on the stellar anomalies, researchers at the University of Erlangen-Nurember suggest naming the new stars BLAPS, short for Blue Large-Amplitude Pulsators.

Astronomers know more about BLAPS than they did in 2013, but the details of their origins and evolution remain murky. Astronomers originally hypothesized that BLAPS were a type of hot dwarf star. Hot dwarfs are older stars that rapidly pulsate as their thermonuclear cores convert helium into carbon. The sun's stellar fusion turns helium into hydrogen.

Detailed analysis of several BLATS suggests the stars boast extremely hot temperatures comparable to hot dwarfs. But BLATS are significantly bigger than hot dwarfs.

For now, why and how BLAPS came to be so bloated and oscillate so quickly remains a mystery -- a mystery to be solved by future investigations.

STELLAR CHEMISTRY
New simulations could help in hunt for massive mergers of neutron stars, black holes
Berkeley CA (SPX) Aug 03, 2017
Now that scientists can detect the wiggly distortions in space-time created by the merger of massive black holes, they are setting their sights on the dynamics and aftermath of other cosmic duos that unify in catastrophic collisions. Working with an international team, scientists at the Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) have developed new computer ... read more

Related Links
Stellar Chemistry, The Universe And All Within It

Thanks for being here;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.

SpaceDaily Contributor
$5 Billed Once


credit card or paypal
SpaceDaily Monthly Supporter
$5 Billed Monthly


paypal only

Comment using your Disqus, Facebook, Google or Twitter login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle

STELLAR CHEMISTRY
A look inside the Space Station's experimental BEAM module

Two Voyagers Taught Us How to Listen to Space

NASA Offers Space Station as Catalyst for Discovery in Washington

Voyager spacecraft still in communication 40 years out into the void

STELLAR CHEMISTRY
Space Launch System Solid Rocket Boosters 'on Target' for First Flight

Dragon to be packed with new experiments for International Space Station

ISRO Develops Ship-Based Antenna System to Track Satellite Launches

NASA taps BWXT for reactor design for future Mars missions

STELLAR CHEMISTRY
Five Years Ago and 154 Million Miles Away: Touchdown!

For Moratorium on Sending Commands to Mars, Blame the Sun

Tributes to wetter times on Mars

Opportunity will spend three weeks at current location due to Solar Conjunction

STELLAR CHEMISTRY
China develops sea launches to boost space commerce

Chinese satellite Zhongxing-9A enters preset orbit

Chinese Space Program: From Setback, to Manned Flights, to the Moon

Chinese Rocket Fizzles Out, Puts Other Launches on Hold

STELLAR CHEMISTRY
ASTROSCALE Raises a Total of $25 Million in Series C Led by Private Companies

LISA Pathfinder: bake, rattle and roll

Airbus DS to expand cooperation with Russia

UK space companies to develop international partnerships

STELLAR CHEMISTRY
BAE Systems reveals iMOTR radar system

Lockheed to intro radar demonstrator prototype

Algorithms that can sketch, recreate 3-D shapes

Ferroelectric phenomenon proven viable for oxide electrodes, disproving predictions

STELLAR CHEMISTRY
Unexpected life found at bottom of High Arctic lakes

NASA hiring a planetary protection officer to guard against alien invaders

Researchers detect exoplanet with glowing water atmosphere

Hubble detects exoplanet with glowing water atmosphere

STELLAR CHEMISTRY
Twilight observations reveal huge storm on Neptune

Jovian storm looms large in the Jupiter's High North

New Horizons Video Soars over Pluto's Majestic Mountains and Icy Plains

Juno spots Jupiter's Great Red Spot




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News






The content herein, unless otherwise known to be public domain, are Copyright 1995-2017 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement