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New short-period δ Scuti stars in OGLE-IV fields toward the galactic bulge
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Pietrukowicz, P., Ratajczak, M., Soszyński, I., Udalski, A., Szymański, M. K., Ulaczyk, K., Poleski, R., Kozłowski, S., Skowron, J., Skowron, D. M., Mróz, P., Rybicki, K., Iwanek, P., Wrona, M. and Gromadzki, M. (2022) New short-period δ Scuti stars in OGLE-IV fields toward the galactic bulge. Acta Astronomica, 72 (3). pp. 161-170. doi:10.32023/0001-5237/72.3.1 ISSN 0001-5237.
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Official URL: https://doi.org/10.32023/0001-5237/72.3.1
Abstract
We report the classification of 24 puzzling short-period variable stars located in OGLE-IV Galactic bulge fields. The stars are low-amplitude (<0.05 mag) multi-periodic objects with dominant periods between 22 min and 54 min whose type could not have been unambiguously established based on photometry only. A low-resolution spectroscopic follow-up observations have shown that all the objects are main sequence A/F-type stars. Thus, all the variables are δ Sct-type pulsators. We have added them to the OGLE-IV Collection of Variable Stars.
Item Type: | Journal Article | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Journal or Publication Title: | Acta Astronomica | ||||
Publisher: | Copernicus Foundation for Polish Astronomy | ||||
ISSN: | 0001-5237 | ||||
Official Date: | 2022 | ||||
Dates: |
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Volume: | 72 | ||||
Number: | 3 | ||||
Page Range: | pp. 161-170 | ||||
DOI: | 10.32023/0001-5237/72.3.1 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
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