R
R. Toma
Researcher at Armagh Observatory
Publications - 5
Citations - 63
R. Toma is an academic researcher from Armagh Observatory. The author has contributed to research in topics: Stars & Variable star. The author has an hindex of 3, co-authored 4 publications receiving 53 citations.
Papers
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Journal ArticleDOI
The OmegaWhite Survey for Short-Period Variable Stars - I : Overview and First Results
S. Macfarlane,S. Macfarlane,R. Toma,G. Ramsay,Paul J. Groot,Patrick Woudt,Janet E. Drew,Geert Barentsen,J. Eislöffel +8 more
TL;DR: OmegaWhite as mentioned in this paper is a wide-field high-cadence $g$-band synoptic survey which aims to unveil the Galactic population of short-period variable stars (with periods $<$ 80 min), including ultracompact binary star systems and stellar pulsators.
Journal ArticleDOI
The OmegaWhite Survey for short period variable stars - II. An overview of results from the first four years
R. Toma,G. Ramsay,S. Macfarlane,S. Macfarlane,Paul J. Groot,Patrick Woudt,V. S. Dhillon,V. S. Dhillon,C. S. Jeffery,T. R. Marsh,Gijs Nelemans,Danny Steeghs +11 more
TL;DR: OmegaWhite is a wide field, high cadence, synoptic survey targeting fields in the southern Galactic plane, with the aim of discovering short period variable stars.
Journal ArticleDOI
The OmegaWhite survey for Short-Period Variable Stars III: Follow-up Photometric and Spectroscopic Observations
S. Macfarlane,S. Macfarlane,Patrick Woudt,Paul J. Groot,G. Ramsay,R. Toma,Mokhine Motsoaledi,L. Crause,David Gilbank,Donal O'Donoghue,S. B. Potter,A. A. Sickafoose,C. van Gend,Hannah L. Worters +13 more
TL;DR: In this paper, the authors presented photometric and spectroscopic follow-up observations of short-period variables discovered in the OmegaWhite survey: a wide-field high-cadence g-band synoptic survey targeting the Galactic Plane.
Journal ArticleDOI
The OmegaWhite Survey for short-period variable stars – IV. Discovery of the warm DQ white dwarf OW J175358.85−310728.9
S. Macfarlane,S. Macfarlane,Patrick Woudt,Patrick Dufour,G. Ramsay,Paul J. Groot,R. Toma,B. Warner,Kerry Paterson,Thomas Kupfer,J. van Roestel,L. N. Berdnikov,L. N. Berdnikov,T. Dagne,F. Hardy +14 more
TL;DR: In this paper, the discovery and follow-up observations of the second known variable warm DQ white dwarf OWJ175358.9 (OW J1753−3107) are presented.
Journal ArticleDOI
The OmegaWhite Survey for Short Period Variable Stars VI. Open Clusters
TL;DR: In this article , the authors presented the results of a search for short-period variable stars in the field of 20 open clusters using light curves with ∼3 min cadence and a duration of 2 hrs made using the OmegaWhite survey.