Can a planet change the measured age of its parent star?
If we know a star’s rotation we can calculate its age. But what happens if this rotation is affected by a nearby massive planet? And how much will this change our age estimate?
Looks like the Sun, but does it spin like the Sun: measuring differential rotation in 16 Cyg A & B
The Sun is known to rotate differentially, which plays a large part in our understanding of solar physics. Do we see the same differential rotation in Solar analogues, 16 Cyg A & B?
The Circle of Life… of Black Holes
Today’s post presents SIMBA, a cosmological simulation that focuses on understanding the growth and evolution of black holes and their host galaxy.
Small, but Mighty! A galaxy robbed of its stars but contains a supermassive secret.
Today’s post looks at the investigation of a very small galaxy hosting a black hole that’s 15% of its total mass. This paper investigates whether this was once a much bigger galaxy, but has been robbed of its stars by a close call with another nearby galaxy.
Satellites of satellites should exist. Let’s go look for them.
Today’s paper makes predictions for the yet-to-be-observed dwarf galaxy population around Andromeda’s satellite galaxy, M33. It provides scientific justification for a future mission with WFIRST.
Mixing up a Batch of Stars
We can learn a lot about the history of the universe from the stars we see in the night sky today. In today’s astrobite, we look at the history that certain carbon-enhanced, metal-poor stars might be trying to tell.