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Table 5

Difference of the log-likelihoods of the warp (Yusifov 2004) and no-warp models Δ ≡ WARPNOWARP for the HIP2 sample.

HIP2 subset Nstars Δ σΔ P(Δ > 0)

All 989 –14.99 6.50 0.01
All No HIP2 binaries 838 –11.86 5.74 0.02
mv< 7.5 498 –1.68 4.47 0.35
mv< 7.5 No HIP2 binaries 404 –2.29 4.21 0.29

Notes.Results are shown for the whole sample (All, mv < 8.5) and for the bright sample (mv < 7.5). We also present the results obtained removing the stars labeled as binaries in van Leeuwen (2008). The standard deviation σΔ and the probability P(Δ > 0) are calculated using bootstrap resamples (see text).

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