RAT J1953+1859: a dwarf nova discovered through high amplitude QPOs in quiescence

G. Ramsay; P. Hakala; T. Barclay; P.J. Wheatley; G. Marshall; H. Lehto; R. Napiwotzki; G. Nelemans; S. Potter; I. Todd

doi:10.1111/j.1365-2966.2009.14982.x

RAT J1953+1859: a dwarf nova discovered through high amplitude QPOs in quiescence

G. Ramsay, P. Hakala, T. Barclay, P.J. Wheatley, G. Marshall, H. Lehto, R. Napiwotzki, G. Nelemans, S. Potter, I. Todd

Centre for Astrophysics Research (CAR)

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Abstract

We report the discovery of an accreting binary, RAT J1953+1859, made during the RApid Temporal Survey (RATS) on the Isaac Newton Telescope. It showed high amplitude (0.3 mag) quasi-periodic oscillations on a time-scale of ∼20 min. Further observations made using the Nordic Optical Telescope showed it to be ∼4 mag brighter than in the discovery images. These photometric observations, together with radial velocity data taken using the William Herschel Telescope, point to an orbital period of ∼90 min. These data suggest that RAT J1953+1859 is a dwarf novae of the SU UMa type. What makes RAT J1953+1859 unusual is that it is the first such system to be discovered as a result of high amplitude QPOs during quiescence. This suggests that high-cadence wide-field surveys could be another means to discover cataclysmic variables as a result of their short period variability.

Original language	English
Pages (from-to)	1333-1338
Journal	Monthly Notices of the Royal Astronomical Society
Volume	398
Issue number	3
DOIs	https://doi.org/10.1111/j.1365-2966.2009.14982.x
Publication status	Published - 2009

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title = "RAT J1953+1859: a dwarf nova discovered through high amplitude QPOs in quiescence",

abstract = "We report the discovery of an accreting binary, RAT J1953+1859, made during the RApid Temporal Survey (RATS) on the Isaac Newton Telescope. It showed high amplitude (0.3 mag) quasi-periodic oscillations on a time-scale of ∼20 min. Further observations made using the Nordic Optical Telescope showed it to be ∼4 mag brighter than in the discovery images. These photometric observations, together with radial velocity data taken using the William Herschel Telescope, point to an orbital period of ∼90 min. These data suggest that RAT J1953+1859 is a dwarf novae of the SU UMa type. What makes RAT J1953+1859 unusual is that it is the first such system to be discovered as a result of high amplitude QPOs during quiescence. This suggests that high-cadence wide-field surveys could be another means to discover cataclysmic variables as a result of their short period variability.",

author = "G. Ramsay and P. Hakala and T. Barclay and P.J. Wheatley and G. Marshall and H. Lehto and R. Napiwotzki and G. Nelemans and S. Potter and I. Todd",

note = "{\textquoteleft}The definitive version is available at www3.interscience.wiley.com '. Copyright Royal Astronomical Society. DOI: 10.1111/j.1365-2966.2009.14982.x",

year = "2009",

doi = "10.1111/j.1365-2966.2009.14982.x",

language = "English",

volume = "398",

pages = "1333--1338",

journal = "Monthly Notices of the Royal Astronomical Society",

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publisher = "Oxford University Press (OUP)",

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TY - JOUR

T1 - RAT J1953+1859: a dwarf nova discovered through high amplitude QPOs in quiescence

AU - Ramsay, G.

AU - Hakala, P.

AU - Barclay, T.

AU - Wheatley, P.J.

AU - Marshall, G.

AU - Lehto, H.

AU - Napiwotzki, R.

AU - Nelemans, G.

AU - Potter, S.

AU - Todd, I.

N1 - ‘The definitive version is available at www3.interscience.wiley.com '. Copyright Royal Astronomical Society. DOI: 10.1111/j.1365-2966.2009.14982.x

PY - 2009

Y1 - 2009

N2 - We report the discovery of an accreting binary, RAT J1953+1859, made during the RApid Temporal Survey (RATS) on the Isaac Newton Telescope. It showed high amplitude (0.3 mag) quasi-periodic oscillations on a time-scale of ∼20 min. Further observations made using the Nordic Optical Telescope showed it to be ∼4 mag brighter than in the discovery images. These photometric observations, together with radial velocity data taken using the William Herschel Telescope, point to an orbital period of ∼90 min. These data suggest that RAT J1953+1859 is a dwarf novae of the SU UMa type. What makes RAT J1953+1859 unusual is that it is the first such system to be discovered as a result of high amplitude QPOs during quiescence. This suggests that high-cadence wide-field surveys could be another means to discover cataclysmic variables as a result of their short period variability.

AB - We report the discovery of an accreting binary, RAT J1953+1859, made during the RApid Temporal Survey (RATS) on the Isaac Newton Telescope. It showed high amplitude (0.3 mag) quasi-periodic oscillations on a time-scale of ∼20 min. Further observations made using the Nordic Optical Telescope showed it to be ∼4 mag brighter than in the discovery images. These photometric observations, together with radial velocity data taken using the William Herschel Telescope, point to an orbital period of ∼90 min. These data suggest that RAT J1953+1859 is a dwarf novae of the SU UMa type. What makes RAT J1953+1859 unusual is that it is the first such system to be discovered as a result of high amplitude QPOs during quiescence. This suggests that high-cadence wide-field surveys could be another means to discover cataclysmic variables as a result of their short period variability.

U2 - 10.1111/j.1365-2966.2009.14982.x

DO - 10.1111/j.1365-2966.2009.14982.x

M3 - Article

SN - 0035-8711

VL - 398

SP - 1333

EP - 1338

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 3

ER -

RAT J1953+1859: a dwarf nova discovered through high amplitude QPOs in quiescence

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