C2 in Peculiar DQ White Dwarfs

@article{Hall2008C2IP,
  title={C2 in Peculiar DQ White Dwarfs},
  author={Patrick B. Hall and Aaron J. Maxwell York University and Toronto and Canada.},
  journal={The Astrophysical Journal},
  year={2008},
  volume={678},
  pages={1292-1297}
}
White dwarfs (WDs) with carbon absorption features in their optical spectra are known as DQ WDs. The subclass of peculiar DQ WDs are cool objects ( -->Teff 6000 K) that show molecular absorption bands that have centroid wavelengths ~100-300 A shortward of the bandheads of the C -->2 Swan bands. These peculiar DQ bands have been attributed to a hydrocarbon such as C -->2H. We point out that C -->2H does not show strong absorption bands with wavelengths matching those of the peculiar DQ bands… Expand

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