SKARKA, Marek, Petr KABÁTH, Ernst PAUNZEN, Miroslav FEDURCO, Ján BUDAJ, Daniel DUPKALA, Jiří KRTIČKA, Artie P. HATZES, Theodor PRIBULLA, Š. PARIMUCHA, Zdeněk MIKULÁŠEK, E. GUENTHER, Silvia SABOTTA, Martin BLAŽEK, Jana DVOŘÁKOVÁ, L. HAMBÁLEK, Tereza KLOCOVÁ, V. KOLLÁR, E. KUNDRA, M. ŠLECHTA a M. VAŇKO. HD 99458: First time ever Ap-type star as a S Scuti pulsator in a short period eclipsing binary? Monthly Notices of the Royal Astronomical Society. Oxford: OXFORD UNIV PRESS, 2019, roč. 487, č. 3, s. 4230-4237. ISSN 0035-8711. Dostupné z: https://dx.doi.org/10.1093/mnras/stz1478. |
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@article{1538698, author = {Skarka, Marek and Kabáth, Petr and Paunzen, Ernst and Fedurco, Miroslav and Budaj, Ján and Dupkala, Daniel and Krtička, Jiří and Hatzes, Artie P. and Pribulla, Theodor and Parimucha, Š. and Mikulášek, Zdeněk and Guenther, E. and Sabotta, Silvia and Blažek, Martin and Dvořáková, Jana and Hambálek, L. and Klocová, Tereza and Kollár, V. and Kundra, E. and Šlechta, M. and Vaňko, M.}, article_location = {Oxford}, article_number = {3}, doi = {http://dx.doi.org/10.1093/mnras/stz1478}, keywords = {techniques; photometric techniques; spectroscopic binaries; eclipsing stars; chemically peculiar stars; individual; 99458 stars; oscillations}, language = {eng}, issn = {0035-8711}, journal = {Monthly Notices of the Royal Astronomical Society}, title = {HD 99458: First time ever Ap-type star as a S Scuti pulsator in a short period eclipsing binary?}, url = {https://arxiv.org/abs/1906.01877}, volume = {487}, year = {2019} }
TY - JOUR ID - 1538698 AU - Skarka, Marek - Kabáth, Petr - Paunzen, Ernst - Fedurco, Miroslav - Budaj, Ján - Dupkala, Daniel - Krtička, Jiří - Hatzes, Artie P. - Pribulla, Theodor - Parimucha, Š. - Mikulášek, Zdeněk - Guenther, E. - Sabotta, Silvia - Blažek, Martin - Dvořáková, Jana - Hambálek, L. - Klocová, Tereza - Kollár, V. - Kundra, E. - Šlechta, M. - Vaňko, M. PY - 2019 TI - HD 99458: First time ever Ap-type star as a S Scuti pulsator in a short period eclipsing binary? JF - Monthly Notices of the Royal Astronomical Society VL - 487 IS - 3 SP - 4230-4237 EP - 4230-4237 PB - OXFORD UNIV PRESS SN - 00358711 KW - techniques KW - photometric techniques KW - spectroscopic binaries KW - eclipsing stars KW - chemically peculiar stars KW - individual KW - 99458 stars KW - oscillations UR - https://arxiv.org/abs/1906.01877 L2 - https://arxiv.org/abs/1906.01877 N2 - We present the discovery of a unique object, a chemically peculiar Ap-type star showing fi Scuti pulsations that, is bound in an eclipsing binary system with an orbital period shorter than 3 d. HD 99458 is therefore a complex astrophysical laboratory opening doors for studying various, often contradictory, physical phenomena at the same time. It is the first Ap star ever discovered in an eclipsing binary. The orbital period of 2.722 d is the second shortest among all known chemically peculiar (CP2) binary stars. Pulsations of (S Scuti type are also extremely rare among CP2 stars and no unambiguously proven candidate has been reported. HD 99458 was formerly thought to he a star hosting an exoplanet, but we definitely reject this hypothesis using photometric observations from the K2 mission and new radial velocity measurements. The companion is a low-mass red dwarf star (M? = 0.45(2)Mo) on an inclined orbit (i = 73.2(6) deg) that shows only grazing eclipses. The rotation and orbital periods are synchronized, while the rotation and orbital axes are misaligned. HD 99458 is an interesting system deserving of more intense investigations. ER -
SKARKA, Marek, Petr KABÁTH, Ernst PAUNZEN, Miroslav FEDURCO, Ján BUDAJ, Daniel DUPKALA, Jiří KRTIČKA, Artie P. HATZES, Theodor PRIBULLA, Š. PARIMUCHA, Zdeněk MIKULÁŠEK, E. GUENTHER, Silvia SABOTTA, Martin BLAŽEK, Jana DVOŘÁKOVÁ, L. HAMBÁLEK, Tereza KLOCOVÁ, V. KOLLÁR, E. KUNDRA, M. ŠLECHTA a M. VAŇKO. HD 99458: First time ever Ap-type star as a S Scuti pulsator in a short period eclipsing binary? \textit{Monthly Notices of the Royal Astronomical Society}. Oxford: OXFORD UNIV PRESS, 2019, roč.~487, č.~3, s.~4230-4237. ISSN~0035-8711. Dostupné z: https://dx.doi.org/10.1093/mnras/stz1478.
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