Photometric studies of δ Scuti stars. I. IP Virginis
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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.
| 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 |
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