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Browsing by Author "Qi, Z. X."
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Low-resolution near-infrared spectroscopic signatures of unresolved ultracool companions to M dwarfs
Cook, Neil; Pinfield, D. J.; Marocco, F.; Burningham, B.; Jones, H. R. A.; Frith, J.; Zhong, J.; Luo, A. L.; Qi, Z. X.; Cowan, N. B.; Gromadzki, M.; Kurtev, R.G.; Guo, Y. X.; Wang, Y. F.; Song, Y. H.; Yi, Z. P.; Smart, R. L. (2017-06-01)We develop a method to identify the spectroscopic signature of unresolved L-dwarf ultracool companions, which compares the spectra of candidates and their associated control stars using spectral ratio differences and ... -
Ultracool dwarf benchmarks with \emph{Gaia} primaries
Marocco, F.; Pinfield, D. J.; Cook, N. J.; Osorio, M. R. Zapatero; Montes, D.; Caballero, J. A.; Gálvez-Ortiz, M. C.; Gromadzki, M.; Jones, H. R. A.; Kurtev, R.; Smart, R. L.; Zhang, Z.; Lavers, A. L. Cabrera; Álvarez, D. García; Qi, Z. X.; Rickard, M. J.; Dover, L. (2017-10-01)We explore the potential of \emph{Gaia} for the field of benchmark ultracool/brown dwarf companions, and present the results of an initial search for metal-rich/metal-poor systems. A simulated population of resolved ultracool ...