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How gyrochronology works: aging the nearby Pisces–Eridanus Stellar Stream
In my last publication in this section, I have introduced the concept/technique of Gyrochronology or how to date stars using their rotational periods. Gyrochronology is a technique with some weaknesses and recently put in doubt for aging old stars. But also has some...
A new age determination technique: The tidal-chronology
One of the most widely used technique for stellar dating is the so-called Gyrochronology, where the stellar rotation breaking with time is used to estimate the age of the stars. This technique is now under revision due to recent discoveries showing that, from a...
Credits and recognition to Kepler – NASA
Last week, NASA announced the official death of the Kepler/K2 space satellite, and it is time to recognize the huge contribution this mission has done to stellar and exoplanetary physics. Literally, there is a before and an after in these astrophysical fields thanks...
The new Gaia Data Release 2 (DR2) is here
The accurate determination of the distances separating the different stars from us is one of the most challenging observing data in astronomy. This is the main goal of the European space mission Gaia: the determination of accurate distances of almost all the stars...
Precise age determination of binary stars with a white dwarf component
Our first news is related with the work done by Fouesneau, M., et al., and submitted recently to the AstroPhysical Journal. They propose a precise age determination method in the case of binary stars were one of the two components is a White Dwarf. Stellar dating in...