L7V Kirkpatrick99 standard: DENIS-P J0205.4-1159 - L7V Hawley02 standard: DENIS 0205-1159 - L7V Kirkpatrick05 standard: DENIS-P J0205.4-1159 - L7V ("optical anchor") Reid08 standard: 2MASS J02052940-1159296 (DENIS-P J0205.4-1159) - L7 (pri. stan.) Kirkpatrick09(GrayCorbally): 2MASS J02052940-1159296 (DENIS-P J0205.4-1159) - L7 (primary optical standard) Kirkpatrick10 standard: 2MASS J01033203+1935361 - L7V (primary near-IR standard) Note that the main standard DENIS-P J0205.4-1159 is a tight triple system and the unresolved near-IR magnitudes appear ~1 mag brighter than typical L7s within 25pc. (J-H)(L7V) = 1.126 (+-0.13 rms) ; SIMBAD trend for d<30pc L dwarfs => adopt (J-H)(L7V) = 1.13 [updated 8/6/2020] (H-Ks)(L7V)= 0.647 (+-0.09 rms); trend SIMBAD d<30pc L dwarfs => adopt (H-Ks)(L7V) = 0.647 [updated 8/6/2020] (V-Ks)(L7V) = 9.76 ; 2MASS_J14162408+1348263 sdL7 (Dahn17) M_G(L7V) = 18.673 ; 2MASS J02052940-1159296 (unresolved trio, so not representative) M_G(L7V) = 19.263 ; Reyle18 polynomial M_J(L7V) = 13.852 ; Reyle18 polynomial M_J(L7V) = 14.315 ; EEM fit to L/T dwarfs d<25pc => adopt M_J(L7V) = 14.31 [updated 12/30/2020] M_H(L7V) = 12.981 ; Reyle18 polynomial (G-Rp)(L7V) = 1.851 ; Reyle18 polynomial (G-J)(L7V) = 5.439 ; Reyle18 polynomial (J-Ks)(L7V) = 1.642 ; Reyle18 polynomial (Ks-W1)(L7V) = 0.824 ; Dupuy12 N=1 (Ks-W1)(L7V) = 0.84 ; Dupuy12 trend => adopt (Ks-W1)(L7V) = 0.84 [updated 12/28/2019] M_K(MKO)(L7V)= 11.6387 ; DENIS_0205-1159 7.0 calc using Kirkpatrick20 (plx=53.67mas) standard M_K(MKO)(L7V)= 11.9341 ; 2MASS_1448+1031 7.0 calc using Kirkpatrick20 (plx=71.2548mas) M_K(MKO)(L7V)= 12.2083 ; SDSS_1416+1348 7.0 calc using Kirkpatrick20 (plx=107.5599mas) M_K(MKO)(L7V)= 12.587 ; WISE_0047+6803 7.0 calc using Kirkpatrick20 (plx=82.3mas) M_K(MKO)(L7V)= 12.7432 ; 2MASS_2244+2043 7.0 calc using Kirkpatrick20 (plx=58.7mas) M_K(MKO)(L7V)= 12.7768 ; 2MASS_0825+2115 7.0 calc using Kirkpatrick20 (plx=93.19mas) M_K(MKO)(L7V)= 13.0772 ; 2MASS_1632+1904 7.0 calc using Kirkpatrick20 (plx=66.29mas) => M_K(MKO)(L7V) = 12.6 [adopted 12/1/2020] M_Ks(L7V)= 11.6387 ; DENIS_0205-1159 7.0 calc using Kirkpatrick20 (plx=53.67mas) standard/(unres triple) M_Ks(L7V)= 11.9441 ; 2MASS_1448+1031 7.0 calc using Kirkpatrick20 (plx=71.2548mas) M_Ks(L7V)= 12.0465 ; WISE_1741-4642 7.0 calc using Kirkpatrick20 (plx=50.5mas) M_Ks(L7V)= 12.1858 ; WISE_0323+5625 7.0 calc using Kirkpatrick20 (plx=51.9mas) M_Ks(L7V)= 12.2195 ; 2MASSW J2148162+400359 M_Ks(L7V)= 12.2253 ; 2MASS J08575849+5708514 M_Ks(L7V)= 12.2683 ; SDSS_1416+1348 7.0 calc using Kirkpatrick20 (plx=107.5599mas) M_Ks(L7V)= 12.3674 ; Gaia_0734-4330 7.0 calc using Kirkpatrick20 (plx=48.2485mas) M_Ks(L7V)= 12.421 ; Reyle18 polynomial M_Ks(L7V)= 12.51 ; trend to L/T dwarfs in notes (1/2021) M_Ks(L7V)= 12.54 ; fit to SIMBAD L7-T3 dwarfs d<25pc (12/2020) M_Ks(L7V)= 12.627 ; WISE_0047+6803 7.0 calc using Kirkpatrick20 (plx=82.3mas) M_Ks(L7V)= 12.6933 ; 2MASS_1925+0700 7.0 calc using Kirkpatrick20 (plx=89.2606mas) M_Ks(L7V)= 12.8096 ; 2MASS J10440942+0429376 M_Ks(L7V) = 12.8206 ; 2MASSI J0318540-342129 M_Ks(L7V)= 12.8632 ; 2MASS_2244+2043 7.0 calc using Kirkpatrick20 (plx=58.7mas) M_Ks(L7V)= 12.8768 ; 2MASS_0825+2115 7.0 calc using Kirkpatrick20 (plx=93.19mas) M_Ks(L7V)= 12.9361 ; VHS_1256-1257B 7.0 calc using Kirkpatrick20 (plx=45.0mas) M_Ks(L7V)= 13.0793 ; 2MASS_0340-6724 7.0 calc using Kirkpatrick20 (plx=107.1165mas) M_Ks(L7V)= 13.1072 ; 2MASS_1632+1904 7.0 calc using Kirkpatrick20 (plx=66.29mas) => adopt M_Ks(L7V) = 12.55 [adopted 12/1/2020] (K(MKO)-Ks)(L7V) = -0.12 +- 0.076 2MASS_2244+2043 (K(MKO)-Ks)(L7V) = -0.10 +- 0.042 2MASS_0825+2115 (K(MKO)-Ks)(L7V) = -0.06 +- 0.022 SDSS__1416+1348 (K(MKO)-Ks)(L7V) = -0.04 +- 0.042 WISE__0047+6803 (K(MKO)-Ks)(L7V) = -0.03 +- 0.070 2MASS_1632+1904 (K(MKO)-Ks)(L7V) = -0.01 +- 0.031 2MASS_1448+1031 (K(MKO)-Ks)(L7V) = 0.00 +- 0.050 DENIS_0205-1159 standard (unresolved triple) (K(MKO)-Ks)(L7V) = 0.06 +- 0.090 SDSS__1044+0429 => adopt (K(MKO)-Ks)(L7V) = Teff(L7V) = 1267 K ; 2MASS J03400942−6724051 (Kirkpatrick20) Teff(L7V) = 1402 K ; Filippazzo15 calibration (M6V-T9V) Teff(L7V) = 1420 K ; Kirkpatrick20 (Table 13 polynomial) Teff(L7V) = 1442 K ; Dupuy17(SaumonMarley08 model scale) Teff(L7V) = 1528 K ; Rad vs. logL for BT-Settl 3Gyr [M/H]=0 isochrone for LogL=-4.412 Teff(L7V) = 1529 K ; Dupuy17(Lyon model scale) => adopt Teff(L7V) = 1530 K (logT = 3.185) [updated 4/17/2020] BC_K(L7V) = 3.266 mag ; Golimowksi04 BC_Ks(L7V) = 3.268 mag ; Filipazzo15 (field) BC_Ks(L7V) = 3.276 mag ; Looper08 BC_Ks(L7V) = 3.31 mag ; Schmidt14 (N=1) => adopt BC_Ks(L7V) = 3.27 [updated 11/1/2019] logL(L7V) = -4.412 ; M_Ks=12.5, BC_Ks=3.27, Mbol=15.770 => adopt logL(L7V) = -4.412 [updated 12/1/2020] => adopt Mbol(L7V) = 15.770 [updated 12/1/2020] Rad(L7V) = 0.08857 Rsun ; logL=-4.412, Teff=1530K => adopt Rad(L7V) = 0.0886 Rsun [updated 4/17/2020] Liebert06 did not list any R-I colors for L7V stars. # Primary Standard 2MASS J02052940-1159296 = DENIS-P J0205.4-1159 = WISEP J020529.69-115929.1 = WDS J02055-1159 = Gaia DR3 5151358868307074432 L5.5+-2.0: Knapp04(Burgasser10,near-IR) L5.5:: Geballe02 L5+L6: Martin06 L5+L8: Martin17 L7V: Kirkpatrick99 L7: Leggett01, Reid08(standard),Kirkpatrick11 L7.5:+L6.5:: Dupuy12(A+B) L7+L8+T0: Reid08 L9: Schneider14(near-IR,SpeX) This was the only L7V in the original L dwarf sequence paper of Kirkpatrick99 and the L7V standard (at least the red spectrum between ~6200A and ~1um). Unfortunately the object is a triple in Washington Double Star catalog, with magnitudes listed of 20.75(A), 22.22(B), 22.70(C). J=14.587+-0.030(2M), H=13.568+-0.037(2M), Ks=12.998+-0.030(2M). No Gaia DR2 parallax. plx=49.3463+-1.6277mas(GaiaDR3). G(ABC)=20.206686+-0.018375(GaiaDR3) => M_G(ABC) = 18.673+-0.074. Rp(ABC)=18.061922+-0.031489(GaiaDR3). Bp-Rp=3.206919, Bp-G=1.062155, G-Rp=2.144764. # Others 2MASS J03400942−6724051 L7:: Kirkpatrick20(near-IR) Teff=1267+-88K(Kirkpatrick20). plx=107.1165+-0.6174mas. SDSS J141624.08+134826.7 sdL7: Kirkpatrick20(opt. & near-IR) 'sd' = subdwarf. Has late T companion ULAS J141623.94+134836.3. plx=107.5599+-0.2958mas(GaiaDR2). Teff=1586+-88K(Kirkpatrick20).