FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W3100706962> ?p ?o ?g. }

• W3100706962 endingPage "90" @default.
• W3100706962 startingPage "90" @default.
• W3100706962 abstract "We present medium-resolution optical (λ/Δλ ∼ 4000) and near-infrared (λ/Δλ ∼ 8000) spectral data for components of the newly discovered WISE J104915.57-531906.1AB (Luhman 16AB) brown dwarf binary. The optical spectra reveal strong 6708 Å Li i absorption in both Luhman 16A (8.0 ± 0.4 Å) and Luhman 16B (3.8 ± 0.4 Å) confirming their substellar mass. Interestingly, this is the first detection of Li i absorption in a T dwarf. In the near-infrared data, we find strong K i absorption at 1.168, 1.177, 1.243, and 1.254 μm in both components. Neither the optical nor the near-infrared alkali lines show low surface gravity signatures. Along with the Li i absorption detection, we can broadly constrain the system age to 0.1–3 Gyr or the mass to 20–65 MJup for each component. Compared to the strength of K i line absorption in equivalent spectral subtype brown dwarfs, Luhman 16A is weaker while Luhman 16B is stronger. Analyzing the spectral region around each doublet in distance scaled flux units and comparing the two sources, we confirm the J-band flux reversal and find that Luhman 16B has a brighter continuum in the 1.17 μm and 1.25 μm regions than Luhman 16A. Converting flux units to a brightness temperature we interpret this to mean that the secondary is ∼50 K warmer than the primary in regions dominated by condensate grain scattering. One plausible explanation for this difference is that Luhman 16B has thinner clouds or patchy holes in its atmosphere allowing us to see to deeper, hotter regions. We also detect comparably strong FeH in the 0.9896 μm Wing–Ford band for both components. Traditionally, a signpost of changing atmosphere conditions from late-type L to early T, the persistence and similarity of FeH at 0.9896 μm in both Luhman 16A and Luhman 16B is an indication of homogenous atmosphere conditions. We calculate bolometric luminosities from observed data supplemented with best fit models for longer wavelengths and find the components are consistent within 1σ with resultant Teffs of 1310 ± 30 K and 1280 ± 75 K for Luhman 16AB respectively." @default.
• W3100706962 created "2020-11-23" @default.
• W3100706962 creator A5008260351 @default.
• W3100706962 creator A5028639748 @default.
• W3100706962 creator A5042641984 @default.
• W3100706962 creator A5043849739 @default.
• W3100706962 creator A5059092707 @default.
• W3100706962 creator A5067632897 @default.
• W3100706962 creator A5082216456 @default.
• W3100706962 date "2014-07-08" @default.
• W3100706962 modified "2023-10-17" @default.
• W3100706962 title "SIGNATURES OF CLOUD, TEMPERATURE, AND GRAVITY FROM SPECTRA OF THE CLOSEST BROWN DWARFS" @default.
• W3100706962 cites W1965635219 @default.
• W3100706962 cites W1965696912 @default.
• W3100706962 cites W1971446808 @default.
• W3100706962 cites W1971741333 @default.
• W3100706962 cites W1981263139 @default.
• W3100706962 cites W1988157543 @default.
• W3100706962 cites W1991659893 @default.
• W3100706962 cites W1992028332 @default.
• W3100706962 cites W1993433960 @default.
• W3100706962 cites W1996338684 @default.
• W3100706962 cites W1997255077 @default.
• W3100706962 cites W1998439583 @default.
• W3100706962 cites W1999222840 @default.
• W3100706962 cites W2003054456 @default.
• W3100706962 cites W2004008632 @default.
• W3100706962 cites W2004392715 @default.
• W3100706962 cites W2007411859 @default.
• W3100706962 cites W2010944179 @default.
• W3100706962 cites W2014106115 @default.
• W3100706962 cites W2014689577 @default.
• W3100706962 cites W2020890029 @default.
• W3100706962 cites W2021561280 @default.
• W3100706962 cites W2026785848 @default.
• W3100706962 cites W2027965041 @default.
• W3100706962 cites W2028553841 @default.
• W3100706962 cites W2033100916 @default.
• W3100706962 cites W2033853492 @default.
• W3100706962 cites W2034817948 @default.
• W3100706962 cites W2048492740 @default.
• W3100706962 cites W2048908387 @default.
• W3100706962 cites W2052937506 @default.
• W3100706962 cites W2057152760 @default.
• W3100706962 cites W2059932545 @default.
• W3100706962 cites W2063988638 @default.
• W3100706962 cites W2066381376 @default.
• W3100706962 cites W2067819575 @default.
• W3100706962 cites W2074214118 @default.
• W3100706962 cites W2085834526 @default.
• W3100706962 cites W2095048637 @default.
• W3100706962 cites W2097456486 @default.
• W3100706962 cites W2104566264 @default.
• W3100706962 cites W2111310051 @default.
• W3100706962 cites W2112833449 @default.
• W3100706962 cites W2114416677 @default.
• W3100706962 cites W2130244886 @default.
• W3100706962 cites W2152638580 @default.
• W3100706962 cites W2160983683 @default.
• W3100706962 cites W2171268603 @default.
• W3100706962 cites W2241732214 @default.
• W3100706962 cites W3098283280 @default.
• W3100706962 cites W3098576060 @default.
• W3100706962 cites W3099046642 @default.
• W3100706962 cites W3099099553 @default.
• W3100706962 cites W3099504888 @default.
• W3100706962 cites W3099599915 @default.
• W3100706962 cites W3100412196 @default.
• W3100706962 cites W3100421974 @default.
• W3100706962 cites W3100808262 @default.
• W3100706962 cites W3101724979 @default.
• W3100706962 cites W3101845186 @default.
• W3100706962 cites W3101872967 @default.
• W3100706962 cites W3101904043 @default.
• W3100706962 cites W3101965178 @default.
• W3100706962 cites W3102467635 @default.
• W3100706962 cites W3102837731 @default.
• W3100706962 cites W3102938219 @default.
• W3100706962 cites W3103129110 @default.
• W3100706962 cites W3103288252 @default.
• W3100706962 cites W3104015111 @default.
• W3100706962 cites W3104166459 @default.
• W3100706962 cites W3104847354 @default.
• W3100706962 cites W3104921671 @default.
• W3100706962 cites W3105034950 @default.
• W3100706962 cites W3123453789 @default.
• W3100706962 cites W3124037614 @default.
• W3100706962 cites W4298079913 @default.
• W3100706962 doi "https://doi.org/10.1088/0004-637x/790/2/90" @default.
• W3100706962 hasPublicationYear "2014" @default.
• W3100706962 type Work @default.
• W3100706962 sameAs 3100706962 @default.
• W3100706962 citedByCount "49" @default.
• W3100706962 countsByYear W31007069622014 @default.
• W3100706962 countsByYear W31007069622015 @default.
• W3100706962 countsByYear W31007069622016 @default.
• W3100706962 countsByYear W31007069622017 @default.
• W3100706962 countsByYear W31007069622018 @default.

• next