Variable stars

[cyborg421]

I've managed to find a list of short variable stars. One of the columns is entitled " v_pri. "

Can anyone explain what it refers to?

Thanks

Simon

[JamesM]

Hi Simon, I wonder if the answer to your question is that your abbreviaiton stands for Variation Period? Its only a guess but if you let me know which list you're looking at maybe I could come up with a better guess.

James

[cyborg421]

Thanks James,

I've already got the period column.

I will attach the file just in case it is useful to anyone else. I can guess/work out most of the columns. I suspect V - Pri is to do with the relative brightness max to min but I couldn't think of any words that would fit.

Simon:)

Short Variable Stars.xls

[GazOC]

I've Goggled a few of the entries in the sheet and they were all eclipsing binaries so "v_pri" could be the primary minimum at visual wavelengths.

Just an (un)educated guess and I don't know how the numbers in the sheet would have been derived.

[cyborg421]

I've found a reference to column E (Type of variable) here;

Object Classification in SIMBAD

Eclipsing binaries are marked EB

Simon

[GazOC]

I only checked about 6 or 7 entries but they were all binaries or suspected binaries. There are other subsets of eclipsing binaries that are not marked "EB", eg. the top entry is Algol which is an eclipsing binary, its Simbad classification is Al* (eclipsing Algol type binary). The second star on the sheet is a binary marked "SB*" (spectroscopic binary) etc etc.

[cyborg421]

So are we saying then that all short period variables are binaries because all the stars in the table have a V-Pri number?

Simon