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Additional Galactic Cepheids from the OGLE Survey

Soszyński, I. and Udalski, A. and Szymanski, M. K. and Pietrukowicz, P. and Skowron, J. and Skowron, D. M. and Poleski, R. and Kozłowski, S. and Mróz, P. and Ulaczyk, K. and Rybicki, K. and Iwanek, P. and Wrona, M. and Gromadzki, M. (2020) Additional Galactic Cepheids from the OGLE Survey. Acta Astronomica, 70 (2). pp. 101-119. ISSN 0001-5237. doi:10.32023/0001-5237/70.2.2.

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We report on the results of a comprehensive search for Cepheid variable stars in the fields photometrically monitored by the OGLE Galaxy Variability Survey. We identify 742 Cepheids not included in the first release of the OGLE Collection of Galactic Cepheids and reclassify several dozen previously published variables. The upgraded collection comprises 1974 classical, 1625 type II, and 119 anomalous Cepheids located in the area of about 3000 square degrees covering the disk and bulge of the Milky Way. We present the most interesting objects in our sample: an isolated group of long-period double-mode classical Cepheids pulsating in the fundamental mode and first overtone, the first known Galactic double-mode Cepheid with the second and third overtone excited, double-mode type II Cepheids, candidates for single-mode first-overtone BL Her stars, and Cepheids showing simultaneous eclipsing variability. We also discuss type II and anomalous Cepheids that are potential members of globular clusters.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Soszyński, I.0000-0002-7777-0842
Udalski, A.0000-0001-5207-5619
Szymanski, M. K.0000-0002-0548-8995
Pietrukowicz, P.0000-0002-2339-5899
Skowron, J.0000-0002-2335-1730
Skowron, D. M.0000-0001-9439-604X
Poleski, R.0000-0002-9245-6368
Kozłowski, S.0000-0003-4084-880X
Mróz, P.0000-0001-7016-1692
Ulaczyk, K.0000-0001-6364-408X
Rybicki, K.0000-0002-9326-9329
Iwanek, P.0000-0002-6212-7221
Wrona, M.0000-0002-3051-274X
Gromadzki, M.0000-0002-1650-1518
Additional Information:© 2020 Copernicus Foundation for Polish Astronomy. Received June 18, 2020. Based on observations obtained with the 1.3-m Warsaw telescope at the Las Campanas Observatory of the Carnegie Institution for Science. We are grateful to R. Smolec for helpful suggestions which improved the paper. We thank A. Schwarzenberg-Czerny for providing software used in this study. This work has been supported by the National Science Centre, Poland, grant MAESTRO no. 2016/22/A/ST9/00009. The OGLE project has received funding from the Polish National Science Centre grant MAESTRO 2014/14/A/ST9/00121. This research has made use of the International Variable Star Index (VSX) database, operated at AAVSO, Cambridge, Massachusetts, USA.
Funding AgencyGrant Number
National Science Centre (Poland)MAESTRO 2016/22/A/ST9/00009
National Science Centre (Poland)MAESTRO 2014/14/A/ST9/00121
Subject Keywords:Stars: variables: Cepheids - Stars: oscillations - Galaxy: bulge - Galaxy: disk - Catalogs
Issue or Number:2
Record Number:CaltechAUTHORS:20200916-112833126
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:105407
Deposited By: George Porter
Deposited On:17 Sep 2020 20:33
Last Modified:11 Jan 2022 22:59

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