Image Details
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 MKO − J 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 MKO − J 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 MKO − J MKO color and M Y measurements for Ross 19B favor a spectral type between T9 and Y0.
© 2023. The Author(s). Published by the American Astronomical Society.