Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: PTF1 J071912.13+485834.0: An outbursting AM CVn system discovered by a
  synoptic survey   We present extensive photometric and spectroscopic observations of PTF1
J071912.13+485834.0, an outbursting AM CVn system discovered by the Palomar
Transient Factory (PTF). AM CVn systems are stellar binaries with some of the
smallest separations known and orbital periods ranging from 5 to 65 minutes.
They are believed to be composed of a white dwarf accretor and a
(semi)-degenerate He-rich donor and are considered to be the helium equivalents
of Cataclysmic Variables. We have spectroscopically and photometrically
identified an orbital period of 26.77 \pm 0.02 minutes for PTF1
J071912.13+485834.0 and found a super-outburst recurrence time of greater than
65 days along with the presence of "normal" outbursts - rarely seen in AM CVn
systems but well known in super-outbursting Cataclysmic Variables. We present a
long-term light curve over two super-cycles as well as high cadence photometry
of both outburst and quiescent stages, both of which show clear variability. We
also compare both the outburst and quiescent spectra of PTF1
J071912.13+485834.0 to other known AM CVn systems, and use the quiescent
phase-resolved spectroscopy to determine the origin of the photometric
variability. Finally, we draw parallels between the different subclasses of SU
UMa-type Cataclysmic Variables and outbursting AM CVn systems. We conclude by
predicting that the Palomar Transient Factory may more than double the number
of outbursting AM CVn systems known, which would greatly increase our
understanding of AM CVn systems.

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The categories of this paper are: plasm-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: stat
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The categories of this paper are: physics
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The categories of this paper are: cmp-lg
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The categories of this paper are: acc-phys
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The categories of this paper are: mtrl-th
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The categories of this paper are: math-ph
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The categories of this paper are: nlin
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The categories of this paper are: quant-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: gr-qc
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The categories of this paper are: chem-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: hep-lat
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The categories of this paper are: supr-con