Carbon Stars as Standard Candles

Our second paper on carbon stars as standard candles has just been accepted. Check it out.

arXiv:2011.11681  [pdf, other]:

Carbon stars as standard candles: II. The median J magnitude as a distance indicator

Authors: Javiera Parada, Jeremy Heyl, Harvey Richer, Paul Ripoche, Laurie Rousseau-Nepton

Here is the first paper too:

arXiv:2005.05539  [pdf, other], doi 10.1093/mnras/staa1346:

Carbon stars as standard candles: I. The luminosity function of carbon stars in the Magellanic Clouds

Authors: Paul Ripoche, Jeremy Heyl, Javiera Parada, Harvey Richer

X-ray Polarisation from X-ray Pulsars

We have just published two new papers on the X-ray polarisation from accreting X-ray pulsars. These are the first new models in nearly forty years!

arXiv:2009.00631  [pdf, other]:

Polarisation of Accreting X-ray Pulsars. I. A New Model
Authors: Ilaria Caiazzo, Jeremy Heyl

arXiv:2009.00634  [pdf, other], doi 10.1093/mnras/staa3429:

Polarisation of Accreting X-ray Pulsars. II. Hercules X-1
Authors: Ilaria Caiazzo, Jeremy Heyl

A Large Fraction of Intermediate Mass Stars Become Magnetic White Dwarfs

About ten to twenty percent of white dwarfs are strongly magnetized, and the origin of the magnetic field is a mystery. We have taken a big step toward solving this mystery with the discovery that more than half of stars with initial masses between five and seven times that of the Sun form magnetic white dwarfs through single-star evolution. This is the first evidence that neither mergers or mass transfer are needed to build the strong fields on white dwarfs. Check out our ApJ paper!