Outputs (11)

Ancient Nova Shells of RX Pup Indicate Evolution of Mass Transfer Rate (2024)
Journal Article
Iłkiewicz, K., Mikołajewska, J., Shara, M. M., Faherty, J. K., & Scaringi, S. (2024). Ancient Nova Shells of RX Pup Indicate Evolution of Mass Transfer Rate. Astrophysical Journal Letters, 972(1), Article L14. https://doi.org/10.3847/2041-8213/ad6e5a

RX Pup is a symbiotic binary that experienced a nova outburst in the 1970s. Here we report a discovery of a ∼1300 yr old nova shell around the system and a possible detection of a ∼7000 yr old nova shell. Together with the nova shell ejected in the 1... Read More about Ancient Nova Shells of RX Pup Indicate Evolution of Mass Transfer Rate.

Burst-induced spin variations in the accreting magnetic white dwarf PBC J0801.2–4625 (2024)
Journal Article
Irving, Z. A., Altamirano, D., Scaringi, S., Veresvarska, M., Knigge, C., Castro Segura, N., …Iłkiewicz, K. (2024). Burst-induced spin variations in the accreting magnetic white dwarf PBC J0801.2–4625. Monthly Notices of the Royal Astronomical Society, 530(4), 3974-3985. https://doi.org/10.1093/mnras/stae1103

PBC J0801.2–4625 is an intermediate polar with a primary spin frequency of 66.08 d−1 and an unknown orbital period. The long-term All Sky Automated Survey for Supernovae (ASAS-SN) light curve of this system reveals four bursts, all of which have simi... Read More about Burst-induced spin variations in the accreting magnetic white dwarf PBC J0801.2–4625.

TESS Photometry of AM Her and AR UMa: Binary Parameters, Cyclotron Emission Modeling, and Mass Transfer Duty Cycles (2024)
Journal Article
Mason, P. A., Hakala, P., Wu, K., Barrett, P. E., Iłkiewicz, K., Littlefield, C., …Scaringi, S. (2024). TESS Photometry of AM Her and AR UMa: Binary Parameters, Cyclotron Emission Modeling, and Mass Transfer Duty Cycles. Astrophysical Journal, 965(1), Article 96. https://doi.org/10.3847/1538-4357/ad27d7

Transiting Exoplanet Survey Satellite (TESS) photometry of the polars AM Herculis (AM Her) and AR Ursae Majoris (AR UMa) is presented, along with high-speed photometry. AM Her shows a variety of high states with frequent transitions between them. TES... Read More about TESS Photometry of AM Her and AR UMa: Binary Parameters, Cyclotron Emission Modeling, and Mass Transfer Duty Cycles.

Evolution of spin in the intermediate polar CC sculptoris (2024)
Journal Article
Paice, J. A., Scaringi, S., Castro Segura, N., Sahu, A., Iłkiewicz, K., Coppejans, D. L., …Veresvarska, M. (2024). Evolution of spin in the intermediate polar CC sculptoris. Monthly Notices of the Royal Astronomical Society: Letters, 531(1), L82-L86. https://doi.org/10.1093/mnrasl/slae035

We report on spin variations in the intermediate polar and cataclysmic variable CC Scl, as seen by the Transiting Exoplanet Survey Satellite (TESS). By studying both the spin period and its harmonic, we find that the spin has varied since it was firs... Read More about Evolution of spin in the intermediate polar CC sculptoris.

The Peculiar Bursting Nature of CP Pup (2024)
Journal Article
Veresvarska, M., Scaringi, S., Hagen, S., De Martino, D., Done, C., Ilkiewicz, K., …Littlefield, C. (2024). The Peculiar Bursting Nature of CP Pup. Monthly Notices of the Royal Astronomical Society, 529(1), 664-672. https://doi.org/10.1093/mnras/stae573

The classical nova CP Puppis has been observed to have particularly puzzling and peculiar properties. In particular, this classical nova displays occasional bursts in its long-term ASAS-SN light curve. Here, we report on five sectors of TESS data dis... Read More about The Peculiar Bursting Nature of CP Pup.

SDSS J134441.83+204408.3: A Highly Asynchronous Short-period Magnetic Cataclysmic Variable with a 56 MG Field Strength (2023)
Journal Article
Littlefield, C., Mason, P. A., Garnavich, P., Szkody, P., Thorstensen, J., Scaringi, S., …Wells, N. (2023). SDSS J134441.83+204408.3: A Highly Asynchronous Short-period Magnetic Cataclysmic Variable with a 56 MG Field Strength. Astrophysical Journal Letters, 943(2), Article L24. https://doi.org/10.3847/2041-8213/acaf04

When the accreting white dwarf in a magnetic cataclysmic variable star (mCV) has a field strength in excess of 10 MG, it is expected to synchronize its rotational frequency to the binary orbit frequency, particularly at small binary separations, due... Read More about SDSS J134441.83+204408.3: A Highly Asynchronous Short-period Magnetic Cataclysmic Variable with a 56 MG Field Strength.

SU Lyn - a transient symbiotic star (2021)
Journal Article
Iłkiewicz, K., Mikołajewska, J., Scaringi, S., Teyssier, F., Stoyanov, K. A., & Fratta, M. (2022). SU Lyn - a transient symbiotic star. Monthly Notices of the Royal Astronomical Society, 510(2), 2707-2717. https://doi.org/10.1093/mnras/stab3637

SU Lyn is a binary system composed of a white dwarf and a red giant star. Although it is known to be bright and variable at X-ray wavelengths, the optical counterpart of the source appeared as a single red giant without prominent emission lines. Beca... Read More about SU Lyn - a transient symbiotic star.

An accreting white dwarf displaying fast transitional mode switching (2021)
Journal Article
Scaringi, S., de Martino, D., Buckley, D., Groot, P., Knigge, C., Fratta, M., Iłkiewicz, K., Littlefield, C., & Papitto, A. (2022). An accreting white dwarf displaying fast transitional mode switching. Nature Astronomy, 6, 98-102. https://doi.org/10.1038/s41550-021-01494-x

Accreting white dwarfs are often found in close binary systems with orbital periods ranging from tens of minutes to several hours. In most cases, the accretion process is relatively steady, with significant modulations only occurring on timescales of... Read More about An accreting white dwarf displaying fast transitional mode switching.

Wind-powered Ultraluminous X-ray Sources (2021)
Journal Article
Wiktorowicz, G., Lasota, J.-P., Belczynski, K., Lu, Y., Liu, J., & Iłkiewicz, K. (2021). Wind-powered Ultraluminous X-ray Sources. Astrophysical Journal, 918(2), Article 60. https://doi.org/10.3847/1538-4357/ac0cf7

Although ultraluminous X-ray sources (ULX) are important for astrophysics because of their extreme apparent super-Eddington luminosities, their nature is still poorly known. Theoretical and observational studies suggest that ULXs could be a diversifi... Read More about Wind-powered Ultraluminous X-ray Sources.

Population-based identification of H α-excess sources in the Gaia DR2 and IPHAS catalogues (2021)
Journal Article
Fratta, M., Scaringi, S., Drew, J., Monguió, M., Knigge, C., Maccarone, T., Court, J., Iłkiewicz, K., Pala, A., Gandhi, P., & Gänsicke, B. (2021). Population-based identification of H α-excess sources in the Gaia DR2 and IPHAS catalogues. Monthly Notices of the Royal Astronomical Society, 505(1), 1135-1152. https://doi.org/10.1093/mnras/stab1258

We present a catalogue of point-like H α-excess sources in the Northern Galactic Plane. Our catalogue is created using a new technique that leverages astrometric and photomeric information from Gaia to select H α-bright outliers in the INT Photometri... Read More about Population-based identification of H α-excess sources in the Gaia DR2 and IPHAS catalogues.