Ricky Egeland

Rotational and Activity Evidence for a Subgiant with a Sun-Like Cycle

Sun-like activity cycle of HD 81809 binary system in calcium HK emission
Wednesday, October 10, 2018

HD 81809 has one of the highest-quality activity cycles from the sample of stars synoptically observed in the Mount Wilson Observatory HK Project.

Ricky Egeland developed sunstardb

50-year time series of the S-index

During his thesis work at HAO, Newkirk Fellow Ricky Egeland developed a solar-stellar database called sunstardb.

AAS Nova Highlights Article About Measuring the Suns Activity On The Scale Used For The Stars

Cycle 23 data and cycle shape model fits
Wednesday, November 30, 2016

The American Astronomical Society (AAS) NOVA website is highlighting a recent publication by HAO's Ricky Egeland (graduate research fellow) titled The Mount Wilson Observatory S-Index of the Sun. The new paper has been accepted for publication in the Astrophysical Journal.

Ricky Egeland

Ricky is a Graduate Research Assistant in the High Altitude Observatory at NCAR. His primary research interests are to study the magnetic cycles of sun-like stars.

Stellar Evidence that the Sun May be in Transition

chromospheric activity and rotation in field dwarfs and subgiants
Friday, July 1, 2016

The study of Sun-like stars helps us to put the Sun in context. HAO Newkirk Fellow Ricky Egeland has co-authored a new publication with Space Science Institute scientist Travis Metcalfe and Carnegie Fellow Jennifer van Saders.

SOLAR COUSIN PRESENTS A MYSTERY FOR THE DYNAMO

HD30495 Figure 1
Thursday, December 3, 2015

What might happen to the well-known 11-year solar cycle if the Sun were spun up to rotate more than two times faster? To investigate such questions of the dependence of the Sun's internal dynamo on parameters such as rotation we must look to other stars with different physical conditions.

HAO annouces the winner of the 2014 Newkirk Fellowship

Image of Ricky Egeland

The only recipient this year and the first winner from MSU, Ricky Egeland learned about the fellowship just moments after passing the oral examination for his doctorate in physics.

Subscribe to RSS - Ricky Egeland