GOTO065054+593624: An 8.5 mag amplitude dwarf nova identified in real time via Kilonova Seekers

Bibcode
2025A&A...699A...8K
DOI
10.1051/0004-6361/202553823
Killestein, T. L.; Ramsay, G.; Kennedy, M.; Kelsey, L.; Steeghs, D.; Littlefair, S.; Godson, B.; Lyman, J.; Pursiainen, M.; Warwick, B.; Krawczyk, C.; Nuttall, L. K.; Wickens, E.; Alexandrov, S. D.; da Silva, C. M.; Leadbeater, R.; Ackley, K.; Dyer, M. J.; Jiménez-Ibarra, F.; Ulaczyk, K.; Galloway, D. K.; Dhillon, V. S.; O'Brien, P.; Noysena, K.; Kotak, R.; Breton, R. P.; Pallé, E.; Pollacco, D.; Kumar, A.; O'Neill, D.; Butterley, T.; Wilson, R.; Mattila, S.; Sahu, A.; Starling, R.; Wang, C. Y.; Liu, Q.; Li, A.; Dai, Z.; Feng, H.; Yuan, W.; Billington, R.; Bull, A. G.; Gaudenzi, S.; Gonano, V.; Krawczyk, H.; Mazzucato, M. T.; Pasqua, A.; da Silva Campos, J. A.; Torres-Guerrero, M.; Antonov, N. N.; Bean, S. J.; Boeneker, E. T.; Brincat, S. M.; Darlington, G. S.; Dubois, F.; Hambsch, F. -J.; Messier, D.; Oksanen, A.; Poyner, G.; Romanov, F. D.; Sharp, I. D.; Tordai, T.; Vanmunster, T.; Wenzel, K.
Bibliographical reference

Astronomy and Astrophysics

Advertised on:
7
2025
Journal
Astronomy and Astrophysics
Number of authors
65
IAC number of authors
2
Citations
2
Refereed citations
2
Description
Dwarf novae are astrophysical laboratories for probing the nature of accretion, binary mass transfer, and binary evolution, but their diverse observational characteristics continue to challenge our theoretical understanding. We here present the discovery of and subsequent observing campaign on GOTO065054+593624 (hereafter GOTO0650), a dwarf nova of the WZ Sge type that was discovered in real-time by citizen scientists via the Kilonova Seekers citizen science project. The nova has an outburst amplitude of 8.5 mag. An extensive dataset charts the photometric and spectroscopic evolution of this object, and it covers the 2024 superoutburst. GOTO0650 shows an absence of visible emission lines during the high state, strong H and barely detected He II emission, and high-amplitude echo outbursts on a rapidly decreasing timescale. The comprehensive dataset we present marks GOTO0650 as a candidate period bouncer, and it highlights the important contribution made by citizen scientists to the study of Galactic transients.
Related projects
Projects' name image
Exoplanets and Astrobiology
The search for life in the universe has been driven by recent discoveries of planets around other stars (known as exoplanets), becoming one of the most active fields in modern astrophysics. The growing number of new exoplanets discovered in recent years and the recent advance on the study of their atmospheres are not only providing new valuable
Enric
Pallé Bago
In progress
Type
Refereed
Exoplanetary Systems & Solar System (SEYSS)
Dwarf novae
Novae

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