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Exploring the Extremes: Characterizing a New Population of Old and Cold Brown Dwarfs

  • Authors: Aaron M. Meisner, S. K. Leggett, Sarah E. Logsdon, Adam C. Schneider, Pascal Tremblin, Mark Phillips

Aaron M. Meisner et al 2023 The Astronomical Journal 166 .

  • Provider: AAS Journals

Caption: Figure 8.

Our new Gemini Y-band detection of Ross 19B allows us to further place it in context with the population of late T and early Y dwarfs. Left: Y MKOJ MKO color as a function of spectral type, for the population of known late T and Y dwarfs (black squares with vertical error bars). The Y MKOJ MKO measurement for Ross 19B is shown as a shaded red rectangle. Right: Y-band absolute magnitude vs. spectral type for late T and Y dwarfs, plus our Ross 19B measurement in red. In both panels the dashed black line shows the mean trend for known objects as a function of spectral type. The Y MKOJ MKO color and M Y measurements for Ross 19B favor a spectral type between T9 and Y0.

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