Over 10 000 δ Scuti Stars toward the Galactic Bulge from OGLE-IV

• Autorzy: Pietrukowicz P. , Soszyński I. , Netzel H. , Wrona M. , Udalski A. , Szymański M. K. , Poleski R. , Kozłowski S. , Skowron J. , Ulaczyk K. , Skowron D. M. , Mróz P. , Rybicki P. , Iwanek P. , Gromadzki M.

Identyfikatory

DOI

10.32023/0001-5237/70.4.1

• Języki publikacji: EN

Abstrakty

EN

We present a collection of 10 111 genuine δ Sct-type pulsating variable stars detected in the OGLE-IV Galactic bulge fields. In this sample, 9835 variables are new discoveries. For most of the stars photometric data cover the whole decade 2010-2019. We illustrate a huge variety of light curve shapes of δ Sct variables. Long-term observations have allowed us to spot objects with evident period, amplitude, and mean brightness variations. Our analysis indicates that about 28% of the stars are single-mode pulsators. Fourteen δ Sct stars show additional eclipsing or ellipsoidal binary modulation. We report significant attenuation or even disappearance of the pulsation signal in six sources. The whole set of variables is a mix of objects representing various Milky Way's populations, with the majority of stars from the Galactic bulge. There are also representatives of the Sagittarius Dwarf Spheroidal Galaxy. Some of the newly detected variables could be SX Phe-type stars residing in globular clusters. The collection, including full V- and I-band time-series data, is available to the astronomical community from the OGLE On-line Data Archive.

Słowa kluczowe

EN

catalogs; stars: variables: delta Scuti; Galaxy: bulge; Galaxies: individual: Sagittarius Dwarf Spheroidal Galaxy

• Wydawca: Copernicus Foundation for Polish Astronomy
• Czasopismo: Acta Astronomica
• Rocznik: 2020
• Tom: Vol. 70, No. 4
• Strony: 241--263
• Opis fizyczny: Bibliogr. 55 poz., rys., tab.

Twórcy

autor

Pietrukowicz P.

• Astronomical Observatory, University of Warsaw, Al. Ujazdowskie 4, 00-478 Warszawa, Poland

autor

Soszyński I.

• Astronomical Observatory, University of Warsaw, Al. Ujazdowskie 4, 00-478 Warszawa, Poland

autor

Netzel H.

• Nicolaus Copernicus Astronomical Center, ul. Bartycka 18, 00-716 Warszawa, Poland

autor

Wrona M.

• Astronomical Observatory, University of Warsaw, Al. Ujazdowskie 4, 00-478 Warszawa, Poland

autor

Udalski A.

• Astronomical Observatory, University of Warsaw, Al. Ujazdowskie 4, 00-478 Warszawa, Poland

autor

Szymański M. K.

• Astronomical Observatory, University of Warsaw, Al. Ujazdowskie 4, 00-478 Warszawa, Poland

autor

Poleski R.

• Astronomical Observatory, University of Warsaw, Al. Ujazdowskie 4, 00-478 Warszawa, Poland

autor

Kozłowski S.

• Astronomical Observatory, University of Warsaw, Al. Ujazdowskie 4, 00-478 Warszawa, Poland

autor

Skowron J.

• Astronomical Observatory, University of Warsaw, Al. Ujazdowskie 4, 00-478 Warszawa, Poland

autor

Ulaczyk K.

• Astronomical Observatory, University of Warsaw, Al. Ujazdowskie 4, 00-478 Warszawa, Poland
• Department of Physics, University of Warwick, Coventry CV4 7AL, UK

autor

Skowron D. M.

• Astronomical Observatory, University of Warsaw, Al. Ujazdowskie 4, 00-478 Warszawa, Poland

autor

Mróz P.

• Astronomical Observatory, University of Warsaw, Al. Ujazdowskie 4, 00-478 Warszawa, Poland
• Division of Physics, Mathematics, and Astronomy, California Institute of Technology, Pasadena, CA 91125, USA

autor

Rybicki P.

• Astronomical Observatory, University of Warsaw, Al. Ujazdowskie 4, 00-478 Warszawa, Poland

autor

Iwanek P.

• Astronomical Observatory, University of Warsaw, Al. Ujazdowskie 4, 00-478 Warszawa, Poland

autor

Gromadzki M.

• Astronomical Observatory, University of Warsaw, Al. Ujazdowskie 4, 00-478 Warszawa, Poland

Bibliografia

• Alard, C., and Lupton, R.H. 1998, ApJ, 503, 325.
• Alcock, C., et al. 2000, ApJ, 536, 798.
• Balona, L.A., and Dziembowski, W.A. 2011, MNRAS, 417, 591.
• Bellm, E.C., et al. 2019, PASP, 131, 018002.
• Blanco, B. M. 1984, AJ, 89, 1836.
• Breger, M., et al. 2000, ASP Conf. Ser., 210, 3.
• Campbell, W.W., and Wright, W.H. 1900, ApJ, 12, 254.
• Chang, S.-W., Protopapas, P., Kim, D.-W., and Byun, Y.-I. 2013, AJ, 145, 132.
• Chen, X., Wang, S., Deng, L., de Grijs, R., Yang, M., and Tian, Hao 2020, ApJS, 249, 18.
• Clement, C.M., et al. 2001, AJ, 122, 2587.
• Colacevich, A. 1935, PASP, 47, 231.
• Eggen, O.J. 1956a, PASP, 68, 238.
• Eggen, O.J. 1956b, PASP, 68, 541.
• Fath, E.A. 1935, PASP, 47, 232.
• Fath, E.A. 1937, Lick Obs. Bull., 18, 77.
• Gaposchkin, S.I. 1955, Per. Zvez., 10, 337.
• Hamanowicz, A., et al. 2016, Acta Astron., 66, 197.
• Harris, W.E. 1996, AJ, 112, 1487.
• Jayasinghe, T., et al. 2020, MNRAS, 493, 4186.
• Kaluzny, J., Kubiak, M., Szymański, M., Udalski, A., Krzeminski, W., and Mateo, M. 1996, A&AS, 120, 139.
• Kaluzny, J., and Thompson, I.B. 2001, A&A, 373, 899.
• Kochanek, C.S., et al. 2017, PASP, 129, 104502.
• Lindblad, P.O., and Eggen, O.J. 1953, PASP, 65, 291.
• Mazur, B., Krzemiński, W., and Thompson, I.B. 2003, MNRAS, 340, 1205.
• McNamara, D.H. 2011, AJ, 142, 110.
• Murphy, S.J., Hey, D., Van Reeth, T., and Bedding, T.R. 2019, MNRAS, 485, 2380.
• Pietrukowicz, P., et al. 2013, Acta Astron., 63, 379.
• Pietrukowicz, P., et al. 2015, ApJ, 811, 113.
• Pietrukowicz, P., et al. 2017, Nature Astronomy, 1, 166.
• Pigulski, A., Kołaczkowski, Z., Ramza, T., and Narwid, A. 2006, Memorie della Societá Astron. Italiana, 77, 223.
• Pojmański, G. 2002, Acta Astron., 52, 397.
• Poleski, R., et al. 2010, Acta Astron., 60, 1.
• Pych, W., Kaluzny, J., Krzeminski, W., Schwarzenberg-Czerny, A., and Thompson, I.B. 2001, A&A, 367, 148.
• Rodríguez, E., López-González, M.J., and López de Coca, P. 2000, A&AS, 144, 469.
• Rodríguez, E., and López-González, M.J. 2000, A&A, 359, 597.
• Rozyczka, M., Thompson, I.B., Pych, W., Narloch, W., Poleski, R., and Schwarzenberg-Czerny, A. 2017, Acta Astron., 67, 203.
• Samus, N.N., Kazarovets, E.V., Durlevich, O.V., Kireeva, N.N., and Pastukhova, E.N. 2017, Astronomy Reports, 61, 80.
• Schwarzenberg-Czerny, A. 1996, ApJ, 460, L107.
• Shappee, B.J., et al. 2014, ApJ, 788, 48.
• Sollima, A., Cacciari, C., Bellazzini, M., and Colucci, S. 2010, MNRAS, 406, 329.
• Soszyński, I., et al. 2010, Acta Astron., 60, 17.
• Soszyński, I., et al. 2014, Acta Astron., 64, 177.
• Soszyński, I., et al. 2016, Acta Astron., 66, 405.
• Sterne, T.E. 1938, ApJ, 87, 133.
• Templeton, M.R., McNamara, B.J., Guzik, J.A., Bradley, P.A., Cox, A.N., and Middleditch, J. 1997, AJ, 114, 1592.
• Udalski, A., Kubiak, M., Szymański, M., Kałużny, J., Mateo, M., and Krzeminski, W. 1994, Acta Astron., 44, 317.
• Udalski, A., Szymański, M., Kałużny, J., Kubiak, M., Mateo, M., and Krzeminski, W. 1995a, Acta Astron., 45, 1.
• Udalski, A., Olech, A., Szymański, M., Kałużny, J., Kubiak, M., Mateo, M., and Krzeminski, W. 1995b, Acta Astron., 45, 433.
• Udalski, A., Olech, A., Szymański, M., Kałużny, J., Kubiak, M., Krzeminski, W., Mateo, M., and Stanek, K.Z. 1996, Acta Astron., 46, 51.
• Udalski, A., Olech, A., Szymański, M., Kałużny, J., Kubiak, M., Mateo, M., Krzeminski, W., and Stanek, K.Z. 1997, Acta Astron., 47, 1.
• Udalski, A., Szymański, M.K., and Szymański, G. 2015, Acta Astron., 65, 1.
• Walker, M.F. 1952, PASP, 64, 192.
• Watson, C.L., Henden, A.A., and Price, A. 2006, Soc. Astron. Sci. Annu. Symp., 25, 47.
• Woźniak, P.R. 2000, Acta Astron., 50, 421.
• Zloczewski, K., Kaluzny, J., Rozyczka, M., Krzeminski, W., and Mazur, B. 2012, Acta Astron., 62,