T7V Standards: Burgasser06 stan: 2MASS J07271824+1710012 T7 (primary standard) 2MASS J15530228+1532369AB T7 (alternative standard) Teff(T7V) = 716 K ; ULAS_0859+1010 (Kirkpatrick19; plx=50.3+-1.7mas) Teff(T7V) = 761 K ; WISE_2018-7423 (Kirkpatrick19; plx=83.2+-1.9mas) Teff(T7V) = 764 K ; WISE_2209-2734 (Kirkpatrick19; plx=78.2+-3.9mas) Teff(T7V) = 779 K ; WISE_2157+2659 (Kirkpatrick19; plx=59.7+-2.2mas) Teff(T7V) = 805 K ; SDSS_1628+2308 (Kirkpatrick19; plx=75.1+-0.9mas) Teff(T7V) = 806 K ; WISE_2348-1028 (Kirkpatrick19; plx=58.4+-3.5mas) Teff(T7V) = 817 K ; 2MASS_0727+1710 (Kirkpatrick19; plx=112.5+-0.9mas) Teff(T7V) = 819 K ; Kirkpatrick20 (Table 13 polynomial) Teff(T7V) = 823 K ; 2MASS J03480772−6022270 (Kirkpatrick20) Teff(T7V) = 825 K ; WISE_1457+5815 (Kirkpatrick19; plx=55.0+-2.3mas) Teff(T7V) = 825 K ; WISE_1852+3537 (Kirkpatrick19; plx=72.0+-1.9mas) Teff(T7V) = 825 K ; Filipazzo15 M6V-T9V field calibration Teff(T7V) = 829 K ; WISE_0614+0951 (Kirkpatrick19; plx=65.6+-2.2mas) Teff(T7V) = 832 K ; 2MASS_0348-6022 (Kirkpatrick19; plx=120.1+-1.8mas) Teff(T7V) = 835 K ; 2MASS_0050-3322 (Kirkpatrick19; plx=94.6+-2.4mas) Teff(T7V) = 853 K ; WISE_1124-0421 (Kirkpatrick19; plx=61.6+-3.1mas) Teff(T7V) = 855 K ; WISE_2213+0911 (Kirkpatrick19; plx=54.5+-2.5mas) Teff(T7V) = 864 K ; Gl_229B (Kirkpatrick19; plx=172.7+-0.3mas) Teff(T7V) = 870 K ; WISE_0040+0900 (Kirkpatrick19; plx=69.8+-1.5mas) Teff(T7V) = 876 K ; WISE_0325+0831 (Kirkpatrick19; plx=78.5+-3.0mas) Teff(T7V) = 879 K ; WISE_0241-3653 (Kirkpatrick19; plx=52.4+-2.7mas) Teff(T7V) = 927 K ; GJ 229B (Kirkpatrick20) => adopt Teff(T7V) = 825K (logT = 2.916) [updated 2/2/2021] M_J(T7V) = 15.21 ; 2MASS_1553+1532 17.0 calc using Kirkpatrick20 (plx=75.1mas) M_J(T7V) = 15.37 ; WISE_1254-0728 17.0 calc using Kirkpatrick20 (plx=41.1mas) M_J(T7V) = 15.53 ; WISE_1457+5815 17.0 calc using Kirkpatrick20 (plx=55.0mas) M_J(T7V) = 15.60 ; WISE_1124-0421 17.0 calc using Kirkpatrick20 (plx=59.4mas) M_J(T7V) = 15.66 ; WISE_2213+0911 17.0 calc using Kirkpatrick20 (plx=54.5mas) M_J(T7V) = 15.72 ; 2MASS_0348-6022 17.0 calc using Kirkpatrick20 (plx=120.1mas) M_J(T7V) = 15.72 ; WISE_0040+0900 17.0 calc using Kirkpatrick20 (plx=69.8mas) M_J(T7V) = 15.74 ; WISE_2348-1028 17.0 calc using Kirkpatrick20 (plx=58.4mas) M_J(T7V) = 15.79 ; WISE_1852+3537 17.0 calc using Kirkpatrick20 (plx=72.0mas) M_J(T7V) = 15.81 ; 2MASS_0050-3322 17.0 calc using Kirkpatrick20 (plx=94.6mas) M_J(T7V) = 15.83 ; M_J(MKO)=15.5, J(MKO)-J=-0.33 M_J(T7V) = 15.84 ; SDSS_1628+2308 17.0 calc using Kirkpatrick20 (plx=75.1mas) M_J(T7V) = 15.86 ; 2MASS_0727+1710 17.0 calc using Kirkpatrick20 (plx=112.5mas) M_J(T7V) = 15.96 ; WISE_0614+0951 17.0 calc using Kirkpatrick20 (plx=64.9mas) M_J(T7V) = 16.01 ; WISE_1257+4008 17.0 calc using Kirkpatrick20 (plx=57.0mas) M_J(T7V) = 16.24 ; WISE_2157+2659 17.0 calc using Kirkpatrick20 (plx=61.2mas) M_J(T7V) = 16.37 ; WISE_2209-2734 17.0 calc using Kirkpatrick20 (plx=75.5mas) M_J(T7V) = 16.42 ; WISE_0309-5016 17.0 calc using Kirkpatrick20 (plx=62.2mas) M_J(T7V) = 17.48 ; WISE_0226-0211 17.0 calc using Kirkpatrick20 (plx=51.1mas) M_J(T7V) = 17.56 ; Gl_758B 17.0 calc using Kirkpatrick20 (plx=64.0623mas) => adopt M_J(T7V) = 15.83 [updated 12/5/2020] (M_J(MKO)=15.50, J(MKO)-J=-0.33) M_J(MKO)(T7V) = 14.79 ; 2MASS_1553+1532 calc using Kirkpatrick20 (plx=75.1mas) M_J(MKO)(T7V) = 15.21 ; Gl_229B calc using Kirkpatrick20 (plx=173.6955mas) M_J(MKO)(T7V) = 15.24 ; WISE_1124-0421 calc using Kirkpatrick20 (plx=59.4mas) M_J(MKO)(T7V) = 15.35 ; WISE_0241-3653 calc using Kirkpatrick20 (plx=53.1mas) M_J(MKO)(T7V) = 15.37 ; WISE_0040+0900 calc using Kirkpatrick20 (plx=69.8mas) M_J(MKO)(T7V) = 15.42 ; 2MASS_0348-6022 calc using Kirkpatrick20 (plx=120.1mas) M_J(MKO)(T7V) = 15.46 ; WISE_2213+0911 calc using Kirkpatrick20 (plx=54.5mas) M_J(MKO)(T7V) = 15.46 ; WISE_2348-1028 calc using Kirkpatrick20 (plx=58.4mas) M_J(MKO)(T7V) = 15.47 ; 2MASS_0727+1710 calc using Kirkpatrick20 (plx=112.5mas) M_J(MKO)(T7V) = 15.48 ; WISE_1457+5815 calc using Kirkpatrick20 (plx=55.0mas) M_J(MKO)(T7V) = 15.50 ; WISE_0614+0951 calc using Kirkpatrick20 (plx=64.9mas) M_J(MKO)(T7V) = 15.50 ; WISE_0325+0831 calc using Kirkpatrick20 (plx=76.3mas) M_J(MKO)(T7V) = 15.49 (+-0.37 rms) ; Tinney14(N=4) M_J(MKO)(T7V) = 15.50 ; M_J=15.83, J(MKO)-J=-0.33 M_J(MKO)(T7V) = 15.53 ; 2MASS_0050-3322 calc using Kirkpatrick20 (plx=94.6mas) M_J(MKO)(T7V) = 15.62 ; WISE_1852+3537 calc using Kirkpatrick20 (plx=72.0mas) M_J(MKO)(T7V) = 15.66 ; SDSS_1628+2308 calc using Kirkpatrick20 (plx=75.1mas) M_J(MKO)(T7V) = 15.71 ; WISE_1257+4008 calc using Kirkpatrick20 (plx=57.0mas) M_J(MKO)(T7V) = 15.82 ; CWISE_1832-5409 calc using Kirkpatrick20 (plx=57.0mas) M_J(MKO)(T7V) = 15.96 ; WISE_0323-5907 calc using Kirkpatrick20 (plx=72.1mas) M_J(MKO)(T7V) = 15.96 ; WISE_2209-2734 calc using Kirkpatrick20 (plx=75.5mas) M_J(MKO)(T7V) = 16.00 ; WISE_2157+2659 calc using Kirkpatrick20 (plx=61.2mas) M_J(MKO)(T7V) = 16.07 ; WISE_0309-5016 calc using Kirkpatrick20 (plx=62.2mas) M_J(MKO)(T7V) = 16.38 ; WISE_2018-7423 calc using Kirkpatrick20 (plx=83.2mas) M_J(MKO)(T7V) = 16.39 ; ULAS_0859+1010 calc using Kirkpatrick20 (plx=50.3mas) M_J(MKO)(T7V) = 16.95 ; WISE_0226-0211 calc using Kirkpatrick20 (plx=51.1mas) M_J(MKO)(T7V) = 17.60 ; Gl_758B calc using Kirkpatrick20 (plx=64.0623mas) M_J(MKO)(T7V) > 19.17 ; WISE_0806-0820 calc using Kirkpatrick20 (plx=82.2mas) (wow - major deviant) => adopt M_J(MKO)(T7V) = 15.50 [updated 12/5/2020] (M_J=15.83, J(MKO)-J=-0.33) (J(MKO)-J)(T7V) = -0.53 +- 0.12 ; WISE__0226-0211 17.0 (J(MKO)-J)(T7V) = -0.46 +- 0.08 ; WISE__0614+0951 17.0 (J(MKO)-J)(T7V) = -0.42 +- 0.07 ; 2MASS_1553+1532 17.0 (J(MKO)-J)(T7V) = -0.41 +- 0.04 ; WISE__2209-2734 17.0 (J(MKO)-J)(T7V) = -0.39 +- 0.06 ; 2MASS_0727+1710 17.0 (J(MKO)-J)(T7V) = -0.36 +- 0.13 ; WISE__1124-0421 17.0 (J(MKO)-J)(T7V) = -0.35 +- 0.07 ; WISE__0309-5016 17.0 (J(MKO)-J)(T7V) = -0.35 +- 0.12 ; WISE__0040+0900 17.0 (J(MKO)-J)(T7V) = -0.30 +- 0.05 ; 2MASS_0348-6022 17.0 (J(MKO)-J)(T7V) = -0.30 +- 0.09 ; WISE__1257+4008 17.0 (J(MKO)-J)(T7V) = -0.28 +- 0.05 ; WISE__2348-1028 17.0 (J(MKO)-J)(T7V) = -0.28 +- 0.12 ; 2MASS_0050-3322 17.0 (J(MKO)-J)(T7V) = -0.24 +- 0.04 ; WISE__2157+2659 17.0 (J(MKO)-J)(T7V) = -0.20 +- 0.05 ; WISE__2213+0911 17.0 (J(MKO)-J)(T7V) = -0.18 +- 0.10 ; SDSS__1628+2308 17.0 (J(MKO)-J)(T7V) = -0.17 +- 0.12 ; WISE__1852+3537 17.0 (J(MKO)-J)(T7V) = -0.05 +- 0.17 ; WISE__1457+5815 17.0 (J(MKO)-J)(T7V) = 0.00 +- 0.01 ; WISE__1254-0728 17.0 (J(MKO)-J)(T7V) = 0.04 +- 0.28 ; Gl_758B 17.0 => adopt (J(MKO)-J)(T7V) = -0.33 [updated 12/5/2020] mixing MKO and 2MASS K mags here M_Ks(T7V) = 14.89 ; 2MASS_1553+1532 calc using Kirkpatrick20 (plx=75.1mas) M_Ks(T7V) > 14.96 ; WISE_0040+0900 calc using Kirkpatrick20 (plx=69.8mas) M_Ks(T7V) = 15.12 ; 2MASS_0050-3322 calc using Kirkpatrick20 (plx=94.6mas) M_Ks(T7V) > 15.24 ; WISE_1124-0421 calc using Kirkpatrick20 (plx=59.4mas) M_Ks(T7V) = 15.25 ; SDSS_1628+2308 calc using Kirkpatrick20 (plx=75.1mas) M_K(MKO)(T7V) = 15.56 ; Gl_229B calc using Kirkpatrick20 (plx=173.6955mas) M_Ks(T7V) = 15.62 ; WISE_2348-1028 calc using Kirkpatrick20 (plx=58.4mas) M_Ks(T7V) = 15.67 ; WISE_1254-0728 calc using Kirkpatrick20 (plx=41.1mas) M_Ks(T7V) = 15.67 ; WISE_2213+0911 calc using Kirkpatrick20 (plx=54.5mas) M_Ks(T7V) = 15.71 ; WISE_0241-3653 calc using Kirkpatrick20 (plx=53.1mas) M_Ks(T7V) = 15.73 ; 2MASS_0348-6022 calc using Kirkpatrick20 (plx=120.1mas) M_Ks(T7V) = 15.78 ; WISE_1257+4008 calc using Kirkpatrick20 (plx=57.0mas) M_K(MKO)(T7V) = 15.79 ; 2MASS_0050-3322 calc using Kirkpatrick20 (plx=94.6mas) M_Ks(T7V) = 15.82 ; 2MASS_0727+1710 calc using Kirkpatrick20 (plx=112.5mas) M_Ks(T7V) = 15.87 ; WISE_0614+0951 calc using Kirkpatrick20 (plx=64.9mas) M_Ks(T7V) = 15.88 ; CWISE_1137-5320 calc using Kirkpatrick20 (plx=47.6mas) M_K(MKO)(T7V) = 15.95 ; 2MASS_0727+1710 calc using Kirkpatrick20 (plx=112.5mas) M_Ks(T7V) = 16.08 ; WISE_0323-5907 calc using Kirkpatrick20 (plx=72.1mas) M_K(MKO)(T7V) = 16.10 ; SDSS_1628+2308 calc using Kirkpatrick20 (plx=75.1mas) M_Ks(T7V) = 16.20 ; CWISE_1832-5409 calc using Kirkpatrick20 (plx=57.0mas) M_Ks(T7V) > 16.37 ; WISE_1852+3537 calc using Kirkpatrick20 (plx=72.0mas) M_Ks(T7V) = 16.52 ; WISE_2209-2734 calc using Kirkpatrick20 (plx=75.5mas) M_Ks(T7V) = 16.79 ; WISE_0309-5016 calc using Kirkpatrick20 (plx=62.2mas) M_K(MKO)(T7V) = 16.80 ; ULAS_0859+1010 calc using Kirkpatrick20 (plx=50.3mas) M_Ks(T7V) = 17.27 ; WISE_2018-7423 calc using Kirkpatrick20 (plx=83.2mas) M_Ks(T7V) > 17.64 ; WISE_0806-0820 calc using Kirkpatrick20 (plx=82.2mas) => adopt M_Ks(T7V) = 15.8 [updated 12/5/2020] (K(MKO)-Ks)(T7V) = 0.13 +- 0.19 ; 2MASS_0727+1710 (K(MKO)-Ks)(T7V) = 0.67 +- 0.21 ; 2MASS_0050-3322 (K(MKO)-Ks)(T7V) = 0.85 +- 0.24 ; SDSS__1628+2308 W1-W2(T7V) = 2.40 ; Kirkpatrick19 polynomial M_W2(T7V) = 13.28 (+-0.48 rms) ; Tinney14 BC_Ks(T7V) = 2.112 ; Filipazzo15 (field) [denser trend through L/T] BC_Ks(T7V) = 2.128 ; Looper08 => adopt BC_Ks(T7V) = 2.12 [updated 11/1/2019] # Examples 2MASS J03480772−6022270 *T7: Kirkpatrick20 plx=120.1+-1.8mas(Kirkpatrick20). Teff=823+-88K(Kirkpatrick20). GJ 229B *T7pec: Kirkpatrick20(near-IR) plx=173.6955+-0.0457mas(GaiaDR2). Teff=927+-77K(Kirkpatrick20). 2MASSI J0727182+171001 *T7: Kirkpatrick20(near-IR) T8: Kirkpatrick20(opt.) plx=112.5+-0.9mas(Kirkpatrick20). Teff=845+-71K(Kirkpatrick20).