T7.5V Teff(T7.5V) = 628 K ; ULAS_1315+0826 (Kirkpatrick19; plx=50.5+-5.7mas) Teff(T7.5V) = 673 K ; ULAS_0901-0306 (Kirkpatrick19; plx=62.6+-2.6mas) Teff(T7.5V) = 688 K ; WISE_2319-1844 (Kirkpatrick19; plx=79.2+-3.1mas) Teff(T7.5V) = 692 K ; 2MASS_1114-2618 (Kirkpatrick19; plx=179.2+-1.4mas) Teff(T7.5V) = 709 K ; WISE_0223-2932 (Kirkpatrick19; plx=80.7+-2.6mas) Teff(T7.5V) = 727 K ; WISE J052126.29+102528.4 (Kirkpatrick20) Teff(T7.5V) = 735 K ; ULAS_2321+1354 (Kirkpatrick19; plx=83.6+-2.4mas) Teff(T7.5V) = 744 K ; 2MASS_1553+1532B (Kirkpatrick19; plx=75.1+-0.9mas) Teff(T7.5V) = 751 K ; Kirkpatrick20 (Table 13 polynomial) Teff(T7.5V) = 755 K ; Filipazzo15 M6V-T9V field calibration Teff(T7.5V) = 755 K ; Gl_570D (Kirkpatrick19; plx=171.2+-0.9mas) Teff(T7.5V) = 759 K ; GJ 570D (Kirkpatrick20) Teff(T7.5V) = 821 K ; WISE_1052-1942 (Kirkpatrick19; plx=62.3+-4.4mas) Teff(T7.5V) = 839 K ; 2MASS_1217-0311 (Kirkpatrick19; plx=91.7+-2.2mas) Teff(T7.5V) = 839 K ; WISE_1039-1600 (Kirkpatrick19; plx=53.4+-2.6mas) => adopt Teff(T7.5V) = 750 K (logT = 2.875) [updated 2/2/2021] M_J(T7.5V) = 15.62 ; WISE_1039-1600 calc using Kirkpatrick20 (plx=45.3mas) M_J(T7.5V) = 15.67 ; 2MASS_1217-0311 calc using Kirkpatrick20 (plx=91.7mas) M_J(T7.5V) > 16.01 ; CWISE_1138+7212 calc using Kirkpatrick20 (plx=40.7mas) M_J(T7.5V) = 16.30 ; WISE_2147-1029 calc using Kirkpatrick20 (plx=51.8mas) M_J(T7.5V) = 16.31 ; WISE_1052-1942 calc using Kirkpatrick20 (plx=67.8mas) M_J(T7.5V) > 16.35 ; WISE_0521+1025 calc using Kirkpatrick20 (plx=150.2mas) M_J(T7.5V) = 16.47 ; Gl_570D calc using Kirkpatrick20 (plx=170.0112mas) M_J(T7.5V) = 16.61 ; M_J(MKO)=16.28, (J(MKO)-J)(T7.5V) = -0.33 M_J(T7.5V) = 16.87 ; WISE_0223-2932 calc using Kirkpatrick20 (plx=80.7mas) M_J(T7.5V) = 16.97 ; WISE_2319-1844 calc using Kirkpatrick20 (plx=80.9mas) M_J(T7.5V) = 16.98 ; WISE_1544+5842 calc using Kirkpatrick20 (plx=49.1mas) M_J(T7.5V) = 17.13 ; 2MASS_1114-2618 calc using Kirkpatrick20 (plx=179.2mas) M_J(T7.5V) = 17.79 ; ULAS_1416+1348 calc using Kirkpatrick20 (plx=107.5599mas) => adopt M_J(T7.5V) = 16.61 [updated 12/5/2020] (M_J(MKO)=16.28, (J(MKO)-J)(T7.5V) = -0.33) M_J(MKO)(T7.5V) = 15.35 ; 2MASS_1217-0311 calc using Kirkpatrick20 (plx=91.7mas) M_J(MKO)(T7.5V) = 15.71 ; WISE_0521+1025 calc using Kirkpatrick20 (plx=150.2mas) M_J(MKO)(T7.5V) = 15.94 ; WISE_1809+3838 calc using Kirkpatrick20 (plx=52.4mas) M_J(MKO)(T7.5V) = 15.97 ; WISE_2147-1029 calc using Kirkpatrick20 (plx=51.8mas) M_J(MKO)(T7.5V) = 16.01 ; Gl_570D calc using Kirkpatrick20 (plx=170.0112mas) M_J(MKO)(T7.5V) = 16.04 ; WISE_1052-1942 calc using Kirkpatrick20 (plx=67.8mas) M_J(MKO)(T7.5V) = 16.28 ; M_J=16.61, (J(MKO)-J)(T7.5V) = -0.33 M_J(MKO)(T7.5V) = 16.28 ; ULAS_2321+1354 calc using Kirkpatrick20 (plx=82.8mas) M_J(MKO)(T7.5V) = 16.39 (+-0.72 rms) ; Tinney14 M_J(MKO)(T7.5V) = 16.63 ; WISE_0223-2932 calc using Kirkpatrick20 (plx=80.7mas) M_J(MKO)(T7.5V) = 16.87 ; ULAS_0901-0306 calc using Kirkpatrick20 (plx=62.6mas) M_J(MKO)(T7.5V) = 16.92 ; 2MASS_1114-2618 calc using Kirkpatrick20 (plx=179.2mas) M_J(MKO)(T7.5V) = 17.10 ; WISE_2319-1844 calc using Kirkpatrick20 (plx=80.9mas) M_J(MKO)(T7.5V) = 17.38 ; ULAS_1315+0826 calc using Kirkpatrick20 (plx=50.5mas) M_J(MKO)(T7.5V) = 17.43 ; ULAS_1416+1348 calc using Kirkpatrick20 (plx=107.5599mas) => adopt M_J(MKO)(T7.5V) = 16.28 [updated 12/5/2020] (M_J=16.61, (J(MKO)-J)(T7.5V) = -0.33) (J(MKO)-J)(T7.5V) = -0.46 +- 0.05 ; Gl_570D (J(MKO)-J)(T7.5V) = -0.43 +- 0.17 ; WISE_1544+5842 (J(MKO)-J)(T7.5V) = -0.41 +- 0.08 ; WISE_1039-1600 (J(MKO)-J)(T7.5V) = -0.36 +- 0.03 ; ULAS_1416+1348 (J(MKO)-J)(T7.5V) = -0.33 +- 0.06 ; WISE_2147-1029 (J(MKO)-J)(T7.5V) = -0.32 +- 0.06 ; 2MASS_1217-0311 (J(MKO)-J)(T7.5V) = -0.27 +- 0.06 ; WISE_1052-1942 (J(MKO)-J)(T7.5V) = -0.24 +- 0.16 ; WISE_0223-2932 (J(MKO)-J)(T7.5V) = -0.21 +- 0.08 ; 2MASS_1114-2618 (J(MKO)-J)(T7.5V) = 0.13 +- 0.23 ; WISE_2319-1844 => adopt (J(MKO)-J)(T7.5V) = -0.33 [updated 12/5/2020] mixing K(MKO) and 2MASS Ks here as (K(MKO)-Ks)(T7.5V) ~ 0.1 (see below) M_Ks(T7.5V) > 13.21 ; CWISE_1138+7212 calc using Kirkpatrick20 (plx=40.7mas) M_Ks(T7.5V) > 15.41 ; WISE_1039-1600 calc using Kirkpatrick20 (plx=45.3mas) M_Ks(T7.5V) > 15.68 ; WISE_0521+1025 calc using Kirkpatrick20 (plx=150.2mas) M_Ks(T7.5V) > 15.70 ; 2MASS_1217-0311 calc using Kirkpatrick20 (plx=91.7mas) M_K(MKO)(T7.5V) = 15.73 ; 2MASS_1217-0311 calc using Kirkpatrick20 (plx=91.7mas) M_Ks(T7.5V) = 15.8 ; T7V adopted M_Ks(T7.5V) = 16.30 ; WISE_2147-1029 calc using Kirkpatrick20 (plx=51.8mas) M_Ks(T7.5V) = 16.31 ; WISE_1052-1942 calc using Kirkpatrick20 (plx=67.8mas) M_Ks(T7.5V) > 16.44 ; WISE_1544+5842 calc using Kirkpatrick20 (plx=49.1mas) M_Ks(T7.5V) = 16.45 ; Gl_570D calc using Kirkpatrick20 (plx=170.0112mas) M_Ks(T7.5V) > 16.47 ; WISE_0223-2932 calc using Kirkpatrick20 (plx=80.7mas) M_K(MKO)(T7.5V) = 16.67 ; Gl_570D calc using Kirkpatrick20 (plx=170.0112mas) M_Ks(T8V) = 16.9 ; T8V adopted M_K(MKO)(T7.5V) = 16.95 ; ULAS_2321+1354 calc using Kirkpatrick20 (plx=82.8mas) M_K(MKO)(T7.5V) = 17.19 ; ULAS_0901-0306 calc using Kirkpatrick20 (plx=62.6mas) M_Ks(T7.5V) = 17.74 ; 2MASS_1114-2618 calc using Kirkpatrick20 (plx=179.2mas) M_K(MKO)(T7.5V) = 17.81 ; 2MASS_1114-2618 calc using Kirkpatrick20 (plx=179.2mas) M_Ks(T7.5V) = 17.94 ; WISE_2319-1844 calc using Kirkpatrick20 (plx=80.9mas) M_K(MKO)(T7.5V) = 18.12 ; ULAS_1315+0826 calc using Kirkpatrick20 (plx=50.5mas) M_Ks(T7.5V) = 19.06 ; ULAS_1416+1348 calc using Kirkpatrick20 (plx=107.5599mas) M_K(MKO)(T7.5V) = 19.09 ; ULAS_1416+1348 calc using Kirkpatrick20 (plx=107.5599mas) => adopt M_Ks(T7.5V) = 16.5 [updated 12/5/2020] (K(MKO)-Ks)(T7.5V) = 0.03 +- 0.29 ; ULAS_1416+1348 (K(MKO)-Ks)(T7.5V) = 0.07 +- 0.09 ; 2MASS_1114-2618 (K(MKO)-Ks)(T7.5V) = 0.22 +- 0.05 ; Gl_570D W1-W2(T7.5V) = 2.60 ; Kirkpatrick19 polynomial M_W2(T7.5V) = 13.39 (+-0.27 rms) ; Tinney14 # Examples WISE J052126.29+102528.4 T7.5V: Kirkpatrick20(near-IR) plx=150.2+-3.0pc(Kirkpatrick20), Teff=727+-88K(Kirkpatrick20). GJ 570D T7: Kirkpatrick20(opt.) *T7.5: Kirkpatrick20(near-IR) plx=170.0112+-0.0851mas(GaiaDR2). Teff=759+-63K(Kirkpatrick20).