The Seattle office of the Online Computer Library Center has been awarded $ 250,000 as one of the winners of the Knight News Challenge on Libraries...
Seattle-based project to make librarians Wikipedia stars wins $250K in Knight News Challenge
Tag Archives: stars
The first gravitational-wave source from the isolated evolution of two stars in the 40–100 solar mass range
The merger of two massive (about 30 solar masses) black holes has been detected in gravitational waves. This discovery validates recent predictions that massive binary black holes would constitute the first detection. Previous calculations, however, have not sampled the relevant binary-black-hole progenitors—massive, low-metallicity binary stars—with sufficient accuracy nor included sufficiently realistic physics to enable robust predictions to better than several orders of magnitude. Here...
Popcap brings Bejeweled into modern era with Bejeweled Stars
Match-3 games may be the perfect mobile entertainment apps. They’re easy to learn, can continually challenge you with ever-more-difficult puzzles and are just as fun whether you play for five minutes or for half an hour.
However, while some indie houses have come...
SETI Institute launches radio search for alien life amid 20,000 red dwarf stars
The SETI Institute is shifting the focus of its search for extraterrestrial intelligence to places that could harbor life that’s not as...
A prevalence of dynamo-generated magnetic fields in the cores of intermediate-mass stars
Magnetic fields play a part in almost all stages of stellar evolution. Most low-mass stars, including the Sun, show surface fields that are generated by dynamo processes in their convective envelopes. Intermediate-mass stars do not have deep convective envelopes, although 10 per cent exhibit strong surface fields that are presumed to be residuals from the star formation process. These stars do have convective cores...
A prevalence of dynamo-generated magnetic fields in the cores of intermediate-mass stars
Magnetic fields play a part in almost all stages of stellar evolution. Most low-mass stars, including the Sun, show surface fields that are generated by dynamo processes in their convective envelopes. Intermediate-mass stars do not have deep convective envelopes, although 10 per cent exhibit strong surface fields that are presumed to be residuals from the star formation process. These stars do have convective cores...
Weakened magnetic braking as the origin of anomalously rapid rotation in old field stars
A knowledge of stellar ages is crucial for our understanding of many astrophysical phenomena, and yet ages can be difficult to determine. As they become older, stars lose mass and angular momentum, resulting in an observed slowdown in surface rotation. The technique of ‘gyrochronology’ uses the rotation period of a star to calculate its age. However, stars of known age must be used for calibration,...
Weakened magnetic braking as the origin of anomalously rapid rotation in old field stars
A knowledge of stellar ages is crucial for our understanding of many astrophysical phenomena, and yet ages can be difficult to determine. As they become older, stars lose mass and angular momentum, resulting in an observed slowdown in surface rotation. The technique of ‘gyrochronology’ uses the rotation period of a star to calculate its age. However, stars of known age must be used for calibration,...