Affiliation
Astronomical Society of South Australia (ASSAU)
Sun, 10/04/2020 - 02:28
Hi all
At some point I want to extend the Leavitt's Law plugin in VStar to allow for distance to variable types other DCEP to be determined.
Here's a paper for RR Lyr period luminosity relations from 2004 (Catelan et al) :
https://www.researchgate.net/publication/1799435_The_RR_Lyrae_Period-Lu…
The authors provide I,J,H,K,V band specific PL relations involving P (period) and Z (metalicity).
Are there other papers anyone would suggest? I've seen a few relavant papers but I seek guidance from others more knowledgable in this area.
I'm also interested in papers pointing to period luminosity relations for variable types other than Type I (DCEP) and RR Lyr, e.g. Mira, Type II Cepheids.
Thanks.
David
I'm tracking this in https://github.com/AAVSO/VStar/issues/86 now. Input still welcome.
Hi David,
I've been working on Period - Luminosity relation for red-giant and LPV stars. I do this by taking weekly averages of .Vis entries going way back. I pull data using Hernan's LCplot.pl, then clean the data with a C++ routine and then use R routines to create weekly period estimates, and graphics.
Not sure how useful it would be for VStar, though. Perhaps email me if you're interested ahowe@frii.com
Rodney
Check that:
http://physique.unice.fr/sem6/2013-2014/PagesWeb/PT/Lyrae/calculs.html
I know, it's in french but the formula is there.
JBD
You likely have already seen that results from Gaia are pinning down these calibrations better than before. A nice review of some early Gaia results for RR Lyrae variables is given by Lub in http://aspbooks.org/publications/529/033.pdf.