Tilted discs in six poorly studied cataclysmic variables

ABSTRACT In this work, we search for negative superhumps (nSHs) in poorly studied cataclysmic variables using Transiting Exoplanet Survey Satellite data. We find three eclipsing binaries with nSH signatures: HBHA 4204−09, Gaia DR3 5931071148325476992, and SDSS J090113.51+144704.6. The last one exhibits IW And-like behaviour archival Zwicky Transient Facility data, appears to have shallow, grazing eclipses. addition, detect signatures two non-eclipsing systems: KQ Mon 4684361817175293440, by identifying the orbital period from superorbital-dependent irradiation of secondary. discover more system, [PK2008] HalphaJ103959, an another work. An improved mass ratio–nSH deficit relation q(ε−) is suggested us, which agrees independent measurements on nova-like variables. With relation, estimate ratios all systems our sample, determine inclinations that are eclipsing. All discovered nSHs work excellent targets follow-up spectroscopic studies.