| Форма представления | Статьи в зарубежных журналах и сборниках |
| Год публикации | 2023 |
| Язык | английский |
|
Бикмаев Ильфан Фяритович, автор
Галиуллин Ильхам Ирекович, автор
Гумеров Рустам Исхакович, автор
Склянов Александр Сергеевич, автор
|
| Библиографическое описание на языке оригинала |
Rodriguez A.C, Galiullin I, Gilfanov M, SRGeJ045359.9+622444: A 55 Minute Period Eclipsing AM Canum Venaticorum Star Discovered from a Joint SRG/eROSITA + ZTF Search//Astrophysical Journal. - 2023. - Vol.954, Is.1. - Art. №63. |
| Аннотация |
AM Canum Venaticorum (AM CVn) systems are ultracompact binaries where a white dwarf accretes from a
helium-rich degenerate or semidegenerate donor. Some AM CVn systems will be among the loudest sources of
gravitational waves for the upcoming Laser Interferometer Space Antenna; yet the formation channel of AM CVns
remains uncertain. We report the study and characterization of a new eclipsing AM CVn, SRGeJ045359.9
+622444 (hereafter, SRGeJ0453), discovered from a joint Spektrum-Roentgen-Gamma (SRG) Extended Roentgen
Survey with an Imaging Telescope Array (eROSITA) mission and Zwicky Transient Facility program to identify
cataclysmic variables (CVs). We obtained optical photometry to confirm the eclipse of SRGeJ0453 and determine
the orbital period to be Porb = 55.0802 0.0003 min. We constrain the binary parameters by modeling the highspeed
photometry and radial-velocity curves and find Mdonor = 0.044 ? 0.024Me and Rdonor = 0.078 ? 0.012Re.
The X-ray spectrum is approximated by a power-law model with an unusually flat photon index of Γ ∼ 1
previously seen in magnetic CVs with SRG/eROSITA, but verifying that the magnetic nature of SRGeJ0453
requires further investigation. Optical spectroscopy suggests that the donor star of SRGeJ0453 could have initially
been a He star or a He white dwarf. SRGeJ0453 is the ninth eclipsing AM CVn system published to date, and its
lack of optical outbursts have made it elusive in previous surveys. The discovery of SRGeJ0453 using joint X-ray
and optical surveys highlights the potential for discovering similar systems in the near future. |
| Ключевые слова |
Cataclysmic variable stars, AM Canum Venaticorum stars,
X-ray identification, X-ray surveys; Time domain astronomy; Binary stars |
| Название журнала |
Astrophysical Journal
|
| URL |
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85170518104&doi=10.3847%2f1538-4357%2face698&partnerID=40&md5=3354f9f0e6b30044020a386b20e99de3 |
| Пожалуйста, используйте этот идентификатор, чтобы цитировать или ссылаться на эту карточку |
https://repository.kpfu.ru/?p_id=286464 |
Полная запись метаданных  |
| Поле DC |
Значение |
Язык |
| dc.contributor.author |
Бикмаев Ильфан Фяритович |
ru_RU |
| dc.contributor.author |
Галиуллин Ильхам Ирекович |
ru_RU |
| dc.contributor.author |
Гумеров Рустам Исхакович |
ru_RU |
| dc.contributor.author |
Склянов Александр Сергеевич |
ru_RU |
| dc.date.accessioned |
2023-01-01T00:00:00Z |
ru_RU |
| dc.date.available |
2023-01-01T00:00:00Z |
ru_RU |
| dc.date.issued |
2023 |
ru_RU |
| dc.identifier.citation |
Rodriguez A.C, Galiullin I, Gilfanov M, SRGeJ045359.9+622444: A 55 Minute Period Eclipsing AM Canum Venaticorum Star Discovered from a Joint SRG/eROSITA + ZTF Search//Astrophysical Journal. - 2023. - Vol.954, Is.1. - Art. №63. |
ru_RU |
| dc.identifier.uri |
https://repository.kpfu.ru/?p_id=286464 |
ru_RU |
| dc.description.abstract |
Astrophysical Journal |
ru_RU |
| dc.description.abstract |
AM Canum Venaticorum (AM CVn) systems are ultracompact binaries where a white dwarf accretes from a
helium-rich degenerate or semidegenerate donor. Some AM CVn systems will be among the loudest sources of
gravitational waves for the upcoming Laser Interferometer Space Antenna; yet the formation channel of AM CVns
remains uncertain. We report the study and characterization of a new eclipsing AM CVn, SRGeJ045359.9
+622444 (hereafter, SRGeJ0453), discovered from a joint Spektrum-Roentgen-Gamma (SRG) Extended Roentgen
Survey with an Imaging Telescope Array (eROSITA) mission and Zwicky Transient Facility program to identify
cataclysmic variables (CVs). We obtained optical photometry to confirm the eclipse of SRGeJ0453 and determine
the orbital period to be Porb = 55.0802 0.0003 min. We constrain the binary parameters by modeling the highspeed
photometry and radial-velocity curves and find Mdonor = 0.044 ? 0.024Me and Rdonor = 0.078 ? 0.012Re.
The X-ray spectrum is approximated by a power-law model with an unusually flat photon index of Γ ∼ 1
previously seen in magnetic CVs with SRG/eROSITA, but verifying that the magnetic nature of SRGeJ0453
requires further investigation. Optical spectroscopy suggests that the donor star of SRGeJ0453 could have initially
been a He star or a He white dwarf. SRGeJ0453 is the ninth eclipsing AM CVn system published to date, and its
lack of optical outbursts have made it elusive in previous surveys. The discovery of SRGeJ0453 using joint X-ray
and optical surveys highlights the potential for discovering similar systems in the near future. |
ru_RU |
| dc.language.iso |
ru |
ru_RU |
| dc.subject |
Cataclysmic variable stars |
ru_RU |
| dc.subject |
AM Canum Venaticorum stars |
ru_RU |
| dc.subject |
X-ray identification |
ru_RU |
| dc.subject |
X-ray surveys; Time domain astronomy; Binary stars |
ru_RU |
| dc.title |
SRGeJ045359.9+622444: A 55 Minute Period Eclipsing AM Canum Venaticorum Star Discovered from a Joint SRG/eROSITA + ZTF Search |
ru_RU |
| dc.type |
Статьи в зарубежных журналах и сборниках |
ru_RU |
|
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