Image Details
Caption: Figure 1.
AO imaging results for HIP 8152, HD 25463, HD 135694, HD 6061, and TOI-1736 from our observations with Palomar-PHARO and Keck-NIRC2. Contrast curves are shown in black with 1σ error envelopes in purple. The images themselves are shown as the postage stamp insets. HIP 8152, HD 25463, HD 135694, and TOI-1736 all appear single. Keck-NIRC2 observations of HD 6061 were taken in both Br-γ and J-cont, but only the former is shown here. In the image of HD 6061, TIC 600433892 can be seen in the lower-right corner at a separation of ≈3″. TIC 600433892 is fainter than HD 6061 by 6.2 mag in the TESS bandpass, meaning that its dilution of HD 6061 b’s transits is about a 0.1% effect (i.e., much less than the uncertainty on the stellar radius). HD 6061 and TIC 600433892 have consistent distances and proper motions according to Gaia DR3, meaning that the two stars are almost certainly gravitationally bound. At a distance of 67 pc, their on-sky separation of 3″ translates to a sky-projected separation of about 200 au.
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