Disentangling the Signatures of Blended-Light Atmospheres in L/T Transition Brown Dwarfs
Abstrak
We present a technique to identify spectrophotometrically variable L7-T3 brown dwarfs with single-epoch, low-resolution, near-infrared SpeX spectra. We calculated spectral indices on known variable brown dwarfs and used them to select 11 index-index parameter spaces where known variables can be distinguished from the rest of the general population of brown dwarfs. We find 62 candidate variables, 12 of which show significant variability amplitude in independent photometric monitoring surveys. This technique constitutes the first formal method to identify a time-dependent effect such as variability from peculiarities in their integrated light spectra. This technique will be a useful tool to prioritize targets for future photometric and spectroscopic monitoring in the era of JWST and 30m-class telescopes.
Topik & Kata Kunci
Penulis (6)
Afra Ashraf
Daniella C. Bardalez Gagliuffi
Elena Manjavacas
Johanna M. Vos
Claire Mechmann
Jacqueline K. Faherty
Akses Cepat
- Tahun Terbit
- 2022
- Bahasa
- en
- Sumber Database
- arXiv
- Akses
- Open Access ✓