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Vary, Vary, Little Star…Or Don’t, If You’re the Sun

Vary, Vary, Little Star…Or Don’t, If You’re the Sun

by Daniel Berke | Dec 24, 2018 | Daily Paper Summaries

Why is our Sun so anomalously stable in brightness compared to other stars? The authors of today’s paper decided to run some simulations to find out.

Mirach’s Ghost and Mirach’s Goblin: A New Galaxy Found Near the Local Group

Mirach’s Ghost and Mirach’s Goblin: A New Galaxy Found Near the Local Group

by Daniel Berke | Nov 22, 2018 | Daily Paper Summaries

A amateur astronomer has discovered a galaxy lurking just beyond the Local Group which had gone unnoticed for centuries in the bright glow of neighboring star Mirach.

Gravitational Redshift and the Pup: Measuring the Mass of Sirius B

Gravitational Redshift and the Pup: Measuring the Mass of Sirius B

by Daniel Berke | Oct 2, 2018 | Daily Paper Summaries

Measuring a white dwarf’s gravitational redshift can help us figure out its mass, but for one of the closest stars to us (Sirius B) the numbers didn’t match with other methods. Today’s paper investigates the discrepancy.

Seeing Red (and Blue): Two Sub-Populations of Type Ia Supernovae?

Seeing Red (and Blue): Two Sub-Populations of Type Ia Supernovae?

by Daniel Berke | Aug 8, 2018 | Daily Paper Summaries

A close examination of thirteen Type Ia supernovae in the earliest days after their initial explosion reveals two distinct sub-populations.

Satellite Galaxies All in a Row—How So?

Satellite Galaxies All in a Row—How So?

by Daniel Berke | Jul 11, 2018 | Daily Paper Summaries

Many satellite galaxies in the local universe are orbiting their parent galaxies in highly coherent planes—yet such structures are vanishingly rare in simulations. What gives?

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