| Форма представления | Статьи в зарубежных журналах и сборниках |
| Год публикации | 2024 |
| Язык | английский |
|
Галиуллин Ильхам Ирекович, автор
Колбин Александр Иванович, автор
Шиманский Владислав Владимирович, автор
|
| Библиографическое описание на языке оригинала |
Sibgatullin A.B, Dodon V.I, Galiullin I.I, Kolbin A.I, Shimansky V.V., VinokurovA.S. An X-ray and Optical Study of the Dwarf Nova Candidate OGLE-BLG-DN-0064//Astronomy Letters. - 2024. - Vol.50, Is.11. - P.676-686. |
| Аннотация |
The source OGLE-BLG-DN-0064 (hereafter OGLE64) was classified as a potential dwarf nova based on its regular outburst activity revealed by theOGLE optical survey. In this paper we investigate the X-ray and optical emissions from the source OGLE64 based on archival Chandra and Swift X-ray data and our optical observations with the 6-m BTA telescope at the Special Astrophysical Observatory of the Russian Academy of Sciences. OGLE64 shows an X-ray luminosity LX ≈ 1.6 × 1032 erg s−1 and a high X-ray-to-optical flux ratio FX/Fopt ≈ 1.5 typical for accreting white dwarfs. The X-ray spectrum of OGLE64 is better fitted by the models of a power law with a photon index Γ ≈ 1.9 and an optically thin plasma with a temperature kT ≈ 6.4 keV. The optical spectrum shows hydrogen and neutral helium emission lines in some of which a double-peaked structure is observed. An analysis of the outburst activity of OGLE64 based on data from the OGLE, ZTF, ATLAS, and ASAS-SN optical surveys has revealed superoutbursts with a characteristic supercycle Psuper ≈ 400 days. We found no significant variability in either the X-ray or optical light curves of OGLE64 that could be associated with the change in the visibility conditions for the emitting regions at different orbital phases. Our estimates of the orbital period of the system by indirect methods show that the period probably lies in the range Porb ∼ 1.5−3.5 h. The properties of the X-ray and optical emissions from OGLE64 lead us to conclude that the system is an SU UMa-type dwarf nova. |
| Ключевые слова |
cataclysmic variables, dwarf novae, superoutbursts, accretion, X-ray astronomy |
| Название журнала |
Astronomy Letters
|
| URL |
https://www.scopus.com/inward/record.uri?eid=2-s2.0-105000928323&doi=10.1134%2fS1063773725700033&partnerID=40&md5=bc56f0a8a4aeea7017c04d77ceac05f4 |
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https://repository.kpfu.ru/?p_id=313340 |
Полная запись метаданных  |
| Поле DC |
Значение |
Язык |
| dc.contributor.author |
Галиуллин Ильхам Ирекович |
ru_RU |
| dc.contributor.author |
Колбин Александр Иванович |
ru_RU |
| dc.contributor.author |
Шиманский Владислав Владимирович |
ru_RU |
| dc.date.accessioned |
2024-01-01T00:00:00Z |
ru_RU |
| dc.date.available |
2024-01-01T00:00:00Z |
ru_RU |
| dc.date.issued |
2024 |
ru_RU |
| dc.identifier.citation |
Sibgatullin A.B, Dodon V.I, Galiullin I.I, Kolbin A.I, Shimansky V.V., VinokurovA.S. An X-ray and Optical Study of the Dwarf Nova Candidate OGLE-BLG-DN-0064//Astronomy Letters. - 2024. - Vol.50, Is.11. - P.676-686. |
ru_RU |
| dc.identifier.uri |
https://repository.kpfu.ru/?p_id=313340 |
ru_RU |
| dc.description.abstract |
Astronomy Letters |
ru_RU |
| dc.description.abstract |
The source OGLE-BLG-DN-0064 (hereafter OGLE64) was classified as a potential dwarf nova based on its regular outburst activity revealed by theOGLE optical survey. In this paper we investigate the X-ray and optical emissions from the source OGLE64 based on archival Chandra and Swift X-ray data and our optical observations with the 6-m BTA telescope at the Special Astrophysical Observatory of the Russian Academy of Sciences. OGLE64 shows an X-ray luminosity LX ≈ 1.6 × 1032 erg s−1 and a high X-ray-to-optical flux ratio FX/Fopt ≈ 1.5 typical for accreting white dwarfs. The X-ray spectrum of OGLE64 is better fitted by the models of a power law with a photon index Γ ≈ 1.9 and an optically thin plasma with a temperature kT ≈ 6.4 keV. The optical spectrum shows hydrogen and neutral helium emission lines in some of which a double-peaked structure is observed. An analysis of the outburst activity of OGLE64 based on data from the OGLE, ZTF, ATLAS, and ASAS-SN optical surveys has revealed superoutbursts with a characteristic supercycle Psuper ≈ 400 days. We found no significant variability in either the X-ray or optical light curves of OGLE64 that could be associated with the change in the visibility conditions for the emitting regions at different orbital phases. Our estimates of the orbital period of the system by indirect methods show that the period probably lies in the range Porb ∼ 1.5−3.5 h. The properties of the X-ray and optical emissions from OGLE64 lead us to conclude that the system is an SU UMa-type dwarf nova. |
ru_RU |
| dc.language.iso |
ru |
ru_RU |
| dc.subject |
cataclysmic variables |
ru_RU |
| dc.subject |
dwarf novae |
ru_RU |
| dc.subject |
superoutbursts |
ru_RU |
| dc.subject |
accretion |
ru_RU |
| dc.subject |
X-ray astronomy |
ru_RU |
| dc.title |
An X-ray and Optical Study of the Dwarf Nova Candidate OGLE-BLG-DN-0064 |
ru_RU |
| dc.type |
Статьи в зарубежных журналах и сборниках |
ru_RU |
|
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