thumbnail

Photometric studies of δ Scuti stars. I. IP Virginis

Publications of the Astronomical Society of the Pacific

By:
, , and
DOI: 10.1086/316156

Links

Abstract

We report 15 new times of maximum light for the δ Scuti star IP Virginis (formerly known as SA 106‐1024). An analysis of all times of maximum light indicates that IP Vir has been decreasing in period at a constant rate of − days day−1. Evidence is also presented that IP Vir is a double‐mode variable with a period ratio of . This period ratio predicts a [Fe/H] value of −0.3. From photometric (uvbyβ) observations, we find a foreground reddening of .008 mag and a metallicity of [Fe/H] = +0.05. It is shown that [Fe/H] = −0.3 is most likely the correct value. Intrinsic ‐ and c1‐values, plotted in a model atmosphere grid, indicate a mean effective temperature, K, and a mean surface gravity, . All of these physical parameters support Landolt's initial conclusion that IP Vir is an ordinary δ Sct star.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Photometric studies of δ Scuti stars. I. IP Virginis
Series title:
Publications of the Astronomical Society of the Pacific
DOI:
10.1086/316156
Volume
110
Issue:
746
Year Published:
1998
Language:
English
Publisher:
Astronomical Socety of the Pacific
Description:
7 p.
First page:
451
Last page:
457
Online Only (Y/N):
N
Additional Online Files(Y/N):
N