Cepheids
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by ajamyajax
"Kepler watched a Cepheid star boil"
http://phys.org/news/2016-09-kepler-cepheid-star.html
From VSX: V1154 Cyg, KIC 7548061...
https://www.aavso.org/vsx/index.php?view=detail.top&oid=12074Posted
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by zoo3hans in response to ajamyajax's comment.
Dear Mark
I've done a few years on Cepheid research and always liked these slowly pulsating giants. This one exhibiits a nice 4.9 day period (piriods are usually between 2 and 100 days for Cepheids). They are impressive beasts.
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by ajamyajax
Hi Hans Martin,
Yes I remember that now and glad you enjoyed the article. Hope you find more of those, too. Best Regards, Mark
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by ajamyajax
"Cepheids and RR Lyrae stars in the K2 fields"
https://arxiv.org/abs/1405.7690And looks like a good overall article on Cepheid variables:
http://www.universetoday.com/40468/what-are-cepheid-variables/
And this paper is new:
"Variable stars with the Kepler space telescope"
https://arxiv.org/abs/1610.02004Posted
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by zoo3hans
Thanks Mark
A few articles where I was involved in the old days:
http://iopscience.iop.org/article/10.1086/192378/meta
http://iopscience.iop.org/article/10.1086/304934
http://adsabs.harvard.edu/full/1995ApJ...438....8S
https://arxiv.org/pdf/astro-ph/9702148.pdf
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by ajamyajax in response to zoo3hans's comment.
Dear Hans Martin,
Looks like very nice work! Will have to read through them more later. I also hope more can be done with the Cepheid targets observed in K2.
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by Shellface
My, I didn't realise you had already had papers to your name! Impressive 😃
K2 Cepheids are mostly within the galaxy, so they wouldn't be suitable for dealing with the H-naught. They still give useful distances, though - maybe they could be used to calibrate Gaia parallaxes?
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by ajamyajax
SF, DE is famous too as a co-discoverer of a new cluster of galaxies now called the Matorny-Terentev cluster. Well done again to both our friends here.
https://blog.galaxyzoo.org/2016/06/23/discovered-galaxy-cluster-named-after-two-citizen-scientists/
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