Zobrazeno 1 - 10
of 1 067
pro vyhledávání: '"Surjit, S."'
Autor:
Wadhwa, Surjit S., Landin, Natalia R., Arbutina, Bojan, Tothill, Nicholas F. H., De Horta, Ain Y., Filipovic, Miroslav D., Petrovic, Jelena, Djurasevic, Gojko
With the ever-increasing number of light curve solutions of contact binary systems increasing number of potential bright red nova progenitors are being reported. There remains, however, only one confirmed event. In the present study we undertake a co
Externí odkaz:
http://arxiv.org/abs/2411.02020
Autor:
Wadhwa, Surjit S., Popowicz, Adam, Michel, Raul, Kostic, Petar, Vince, Oliver, Tothill, Nick F. H., De Horta, Ain Y., Filipovic, Miroslav D.
Low mass ratio contact binary systems are more likely to have unstable orbits and potentially merge. In addition, such systems exhibit characteristics such as starspots and high energy emissions (UV) suggestive of chromospheric and magnetic activity.
Externí odkaz:
http://arxiv.org/abs/2407.08365
Autor:
Wadhwa, Surjit S., Landin, Natalia R., Kostic, Petar, Vince, Oliver, Arbutina, Bojan, De Horta, Ain Y., Filipovic, Miroslav D., Tothill, Nicholas F. H., Petrovic, Jelena, Djuravsevic, Gojko
The orbital stability of contact binary systems has been receiving considerable attention recently. Theoretical studies indicate that merger is likely to occur at very low mass ratios, but the actual mass ratio at which merger may take place is likel
Externí odkaz:
http://arxiv.org/abs/2310.06255
Autor:
Wadhwa, Surjit S., Petrovic, Jelena, Tothill, Nick F. H., De Horta, Ain Y., Filipovic, Miroslav D., Djuraševic, Gojko
The study reports photometric and spectroscopic observations of two recently recognised contact binary systems. Both systems show total eclipses and analysis of the light curves indicate both have a very low mass ratios of less than 0.3. We derive ab
Externí odkaz:
http://arxiv.org/abs/2308.11906
Autor:
Wadhwa, Surjit S., Arbutina, Bojan, Petrovic, Jelena, Filipovic, Miroslav D., De Horta, Ain Y., Tothill, Nick F. H., Djuravsevic, Gojko
Multi-band (B, V and R) photometric and spectroscopic observations of six poorly studied contact binaries carried out at the Western Sydney University and Las Cumbres Observatory were analysed using a recent version of the Wilson-Devenney code. All s
Externí odkaz:
http://arxiv.org/abs/2308.09998
Autor:
Wadhwa, Surjit S., Arbutina, Bojan, Tothill, Nick F. H., Filipovic, Miroslav D., De Horta, Ain Y., Petrovic, Jelena, Djurasevic, Gojko
Photometric observations and analysis of twelve previously poorly studied contact binary systems is presented. All show total eclipses and have extremely low mass ratios ranging from 0.072 to 0.15. Also, all show characteristics of orbital instabilit
Externí odkaz:
http://arxiv.org/abs/2306.15190
CRTS J192848.7-404555 was recognised as a potential contact binary merger candidate on the basis of survey photometry analysis. We have carried out follow up ground based photometry of the system and show that at the recorded coordinates for the syst
Externí odkaz:
http://arxiv.org/abs/2212.08209
Autor:
Wadhwa, Surjit S., De Horta, Ain Y., Filipovic, Miroslav D., Tothill, Nick F. H., Arbutina, Bojan, Petrovic, Jelena, Djurasevic, Gojko
The study presents a simplified method to identify potential bright red nova progenitors based on the amplitude of the light curve and infrared (J-H) colour of a contact binary system. We employ published criteria for contact binary orbital instabili
Externí odkaz:
http://arxiv.org/abs/2208.00626
Autor:
Wadhwa, Surjit S., De Horta, Ain, Filipovic, Miroslav D., Tothill, N. F. H., Arbutina, Bojan, Petrovic, Jelena, Djurasevic, Gojko
We present photometric analysis of three bright red nova progenitor contact binary systems: ASAS J082151-0612.6, TYC 7281-269-1 and TYC 7275-1968-1. The primary components in all three systems are solar-type low mass stars with radii somewhat larger
Externí odkaz:
http://arxiv.org/abs/2208.00362