FFF6V Garrison94 lists pi^3 Ori (= HD 30652) as the F6V anchor standard, and MK73 calls pi^3 Ori the F6V dagger standard. HD 173667 and HD 142860 appear to be good standards too. MK43 standard: pi^3 Ori (=HD 30652) - F6V JM53 standards: pi^3 Ori (=HD 30652) - F6V gam Ser - F6V 110 Her - F6V Morgan65 standard: pi^3 Ori (=HD 30652) - F6V Morgan71 standard: pi^3 Ori (=HD 30652) - F6V Garrison72 standard: pi^3 Ori (=HD 30652) - F6V MK73 dagger standard: pi^3 Ori (=HD 30652) - F6V MorganAbt73 standard: pi^3 Ori (=HD 30652) - F6V Cowley74 standard: pi^3 Ori (=HD 30652) - F6V Houk75 standard: gam Ser - F6V (primary standard) Cowley76 standard: pi^3 Ori (=HD 30652) - F6V 110 Her - F6V Gray89 standard: pi^3 Ori (=HD 30652) - F6V Strassmeier90 standard: gam Ser (HR 5933) - F6V Garrison94 standard: pi^3 Ori (=HD 30652) - F6V GrayNstars standard: gam Ser - F6V Skiff08 flags one stars as a F6V MK standard: pi^3 Ori = HD 30652 = HR 1543. Houk/Michigan classifications: Houk's Michigan Spectral Survey catalogues contain 2763 stars classified as "F6V", of which 33 were later classified by Gray and collaborators (2001, 2003, 2006). Houk's "F6V" stars had median subtype F6V in Gray's catalogs (clipped mean F6.4 +-0.2 s.e.m, +-1.3 st.dev). Houk's F6V standard gam Ser has been in common use since JM53 and is still classified F6V by Gray et al., and gam Ser and the anchor standard pi^3 Ori (HD 30652) are nearby negligibly reddened stars with nearly identical colors. Fortunately, the F6V subtype is well-defined, and the standards have changed little since JM53 - so Houk's F6V stars are still F6V on the modern MK system of F-type standards (e.g. MK73, Gray89). For F6V Hipparcos stars within 75pc, with parallax S/N > 8, and within 1 mag of the MS (N=193): (F6V) = 0.947 (+-0.005 sem, +-0.058 stdev; N=194) (F6V) = 1.161 (+-0.007 sem, +-0.081 stdev; N=194) (F6V) = 1.237 (+-0.007 sem, +-0.082 stdev; N=194) (F6V) = 0.213 (+-0.003 sem, +-0.035 stdev; N=194) (F6V) = 0.072 (+-0.002 sem, +-0.027 stdev; N=194) (F6V) = 0.520 (+-0.003 sem, +-0.034 stdev; N=193) (F6V) =-0.057 (+-0.001 sem, +-0.011 stdev; N=193) (F6V) = 1.730 (+-0.011 sem, +-0.110 stdev; N=204) (B-V)(F6V) = 0.447 ; BakisEker22 (B-V)(F6V) = 0.451 ; prim. stan. pi^3 Ori (B-V)(F6V) = 0.46 ; Morgan71 (B-V)(F6V) = 0.46 ; KenyonHartmann95 (B-V)(F6V) = 0.46 ; MorganAbt73 (B-V)(F6V) = 0.464 ; candidate stan. 38 Cas (B-V)(F6V) = 0.47 ; JohnsonMorgan53 (B-V)(F6V) = 0.470 ; exemplar HD 58855 = 22 Lyn ([Fe/H] ~ -0.3) (B-V)(F6V) = 0.48 ; Fitzgerald70 (B-V)(F6V) = 0.48 ; Strassmeier00 (F6V) = 0.482 (+-0.003 sem, +-0.024 stdev); Gray01/03/06 (N=41) (B-V)(F6V) = 0.486 ; xHIP trend for [Fe/H]=0.0 for [Fe/H] vs. (B-V) (see below) (B-V)(F6V) = 0.486 ; median SIMBAD F6V d<25pc (N=18) (F6V) = 0.498 (+-0.002 sem, +-0.031 stdev); HIP d<75pc S/N>8 (N=194) (B-V)(F6V) = 0.515 ; median CATSUP d<30pc (N=2) => adopt (B-V)(F6V) = 0.486 *** [updated 9/26/2020] => adopt (U-B)(F6V) = -0.020 => adopt (Bt-Vt)(F6V)= 0.506 => adopt (V-I)(F6V) = 0.555 => adopt (V-R)(F6V) = 0.277 => adopt (R-I)(F6V) = 0.278 => adopt (V-J)(F6V) = 0.933 => adopt (V-H)(F6V) = 1.133 => adopt (V-Ks)(F6V) = 1.190 => adopt (H-Ks)(F6V) = 0.057 => adopt (J-H)(F6V) = 0.200 (G-V)(F6V) = -0.16637 ; HD_20010_ F6V_ (G-V)(F6V) = -0.15894 ; HD_215648_ F6V (G-V)(F6V) = -0.156 ; HD_140408_ F6V_ (G-V)(F6V) = -0.144 ; HD_223408_ F6V_ (G-V)(F6V) = -0.1402 ; HD_28483_ F6V B-V=0.467, Gmag=6.9648 (G-V)(F6V) = -0.13927 ; HD_89125_ F6V_ (G-V)(F6V) = -0.139 ; trend for screened late F dwarfs for B-V=0.486 (see 10/24/2020 notes in F5V.txt) (G-V)(F6V) = -0.1350 ; HD_28406_ F6V B-V=0.451, Gmag=6.7800 (G-V)(F6V) = -0.131 ; HD_143463_ F6V_ (G-V)(F6V) = -0.1300 ; HD_143463_ F6V B-V=0.483, Gmag=6.7800 (G-V)(F6V) = -0.12964 ; HD_128429_ F6V_ (G-V)(F6V) = -0.12924 ; HD_17926_ F6V_ (G-V)(F6V) = -0.129 ; color polynomial fit for B-V=0.486 (G-V)(F6V) = -0.126 ; exemplar HD 58855 = 22 Lyn (G-V)(F6V) = -0.124 ; HD_59099_ F6V_ (G-V)(F6V) = -0.124 ; Gray01/03/06 F dwarf trend for B-V=0.484 (G-V)(F6V) = -0.12324 ; HD_219482_ F6V_ (G-V)(F6V) = -0.12302 ; HD_199260_ F6V_ (G-V)(F6V) = -0.12261 ; HD_132301_ F6V_ (G-V)(F6V) = -0.12247 ; HD_58855_ F6V (G-V)(F6V) = -0.122 ; HD_28483_ F6V (G-V)(F6V) = -0.121 ; HD_145158_ F6V_ (G-V)(F6V) = -0.12065 ; HD_142860_ F6V (G-V)(F6V) = -0.11678 ; HD_3158_ F6V_ (G-V)(F6V) = -0.11345 ; HD_89569_ F6V_ (G-V)(F6V) = -0.11008 ; HD_59380_ F6V_ (G-V)(F6V) = -0.11 ; HD_28406_ F6V (G-V)(F6V) = -0.10843 ; HD_76653_ F6V_ (G-V)(F6V) = -0.10668 ; HD_149837_ F6V_ (G-V)(F6V) = -0.10536 ; HD_210302_ F6V_ (G-V)(F6V) = -0.09458 ; HD_17206_ F6V_ => adopt (G-V)(F6V) = -0.13 [updated 10/30/2020] (Bp-Rp)(F6V) = 0.6384 ; 1_Eri (Bp-Rp)(F6V) = 0.642 ; color trend for B-V=0.486 (Bp-Rp)(F6V) = 0.6530 ; 38_Cas (Bp-Rp)(F6V) = 0.684 ; Evans18 trend for V-I= 0.555 (Bp-Rp)(F6V) = 0.6993 ; gam_Ser (Bp-Rp)(F6V) = 0.7787 ; pi3_Ori => adopt (Bp-Rp)(F6V) = 0.64 [updated 11/18/2020] (Bp-G)(F6V) = 0.2798 ; 38_Cas (Bp-G)(F6V) = 0.287 ; color trend for B-V=0.486 (Bp-G)(F6V) = 0.3049 ; 1_Eri (Bp-G)(F6V) = 0.3997 ; gam_Ser (Bp-G)(F6V) = 0.5350 ; pi3_Ori => adopt (Bp-G)(F6V) = 0.29 [updated 11/18/2020] (G-Rp)(F6V) = 0.2437 ; pi3_Ori (G-Rp)(F6V) = 0.2996 ; gam_Ser (G-Rp)(F6V) = 0.3334 ; 1_Eri (G-Rp)(F6V) = 0.357 ; color trend for B-V=0.486 (G-Rp)(F6V) = 0.3732 ; 38_Cas => adopt (G-Rp)(F6V) = 0.36 [updated 11/18/2020] (Ks-W1)(F6V) = 0.054 ; EEM trend for d<30pc for B-V=0.484 => adopt (Ks-W1)(F6V) = 0.054 [updated 12/29/2019] (U-B)(F6V) = -0.01 ; Fitzgerald70 (U-B)(F6V) = -0.019 ; HIP d<75pc S/N>8 F6V N=106 (Mermilliod91 photometry) (U-B)(F6V) = -0.02 ; JohnsonMorgan53 (F6V) = 0.557 (+-0.004 sem, +-0.024 stdev); Gray01/03/06 N=41) (F6V) = 0.570 (+-0.001 sem, +-0.031 stdev); HIP d<75pc S/N>8 (N=194) (g-r)(F6V) = 0.337 ; Jordi06 (V-R)=>(g-r) for V-R=0.277 (g-r)(F6V) = 0.295 ; Bilir05 (B-V)=>(g-r) for B-V=0.486 (g-r)(F6V) = 0.28 ; Covey07 => adopt (g-r)(F6V) = 0.29 [updated 10/10/2020] Teff(F6V) = 6268 K ; sec. stan. HD 142860 = gam Ser Teff(F6V) = 6298 K ; exemplar 38 Cas Teff(F6V) = 6321 K ; Gray03/06 F6Vs median from TIC9/Stassun19 (N=23) Teff(F6V) = 6323 K ; mean photometric Teff Teff(F6V) = 6343 K ; Boyajian12 Teff(F6V) = 6352 K ; trend for [Fe/H]=0.0 from PASTEL [Fe/H] vs. Teff for Gray03/06 F6Vs Teff(F6V) = 6362 K ; median of 1037 published Teffs for F6V stars Teff(F6V) = 6369 K ; exemplar HD 58855 = 22 Lyn ([Fe/H] ~ -0.3) Teff(F6V) = 6400 K ; GrayCorbally09 Teff(F6V) = 6412 K ; Teff from smoothed SpT(Teff) trend Teff(F6V) = 6424 K ; pri. stan pi^3 Ori median Teff (see below) Teff(F6V) = 6582 +- 64 K ; vanBelle09 => adopt Teff(F6V) = 6350 K (logT = 3.803) [update 9/26/2020] BCv(F6V) = +0.029 mag ; Balona94(Teff=6360K) BCv(F6V) = +0.025 mag ; Bertone04(ATLAS,Teff=6360K) BCv(F6V) = -0.009 mag ; Flower96(Teff=6360K) BCv(F6V) = -0.025 mag ; Masana06(Teff=6360K) BCv(F6V) = -0.029 mag ; Bessell98(ATLAS9,logg=4.5,Teff=6360K) BCv(F6V) = -0.031 mag ; Casagrande18(Teff=6360K) BCv(F6V) = -0.038 mag ; Code76(Teff=6360K) BCv(F6V) = -0.045 mag ; EEM fit to Casagrande06/08/10(Teff=6360K) => adopt BCv(F6V) = -0.03 [last updated 8/31/2019, adjusted so that BCv(5772K)=-0.085] Mv(F6V) = 3.78 mag ; B-V=0.484 => EEM fit to SIMBAD dwarfs d<25pc Mv(F6V) = 3.71 mag ; exemplar 1 Eri Mv(F6V) = 3.7 mag ; GrayCorbally09 Mv(F6V) = 3.70 mag ; B-V=0.484 => Mv(Wright05) Mv(F6V) = 3.70 mag ; median SIMBAD F6V d<25pc (N=18) Mv(F6V) = 3.69 mag ; linear fit to Gray01/03/06 dwarf sequence (d<50pc) for B-V=0.484 Mv(F6V) = 3.69 mag ; Gray01/03/06 dwarfs, xHIP B-V/Mv, Gaspar16 |[Fe/H]|<0.05 "solar": fit for B-V=0.484 Mv(F6V) = 3.67 mag ; pri. stan. HD 30652 = pi^3 Ori Mv(F6V) = 3.59 mag ; sec. stan. HD 142860 = gam Ser Mv(F6V) = 3.51 mag ; F dwarf trend standards/exemplars Mv(F6V) = 3.51 mag ; exemplar HD 9021 = 38 Cas Mv(F6V) = 3.15 mag ; Wegner07 => adopt Mv(F6V) = 3.69 mag [updated 9/26/2020] => adopt M_G(F6V) = 3.56 mag [updated 12/10/2020] (Mv=3.69, G-V=-0.13) => adopt M_Ks(F6V) = 2.50 mag [updated 12/30/2020] (Mv=3.69, V-Ks=1.190) logL(F6V) = 0.432 dex ; Mv=3.69, BCv=-0.03 => Mbol = 3.660 => adopt logL(F6V) = 0.432 dex [update 9/26/2020] => adopt Mbol(F6V) = 3.660 mag [update 9/26/2020] Rad(F6V) = 1.387 Rsun ; Stassun/TICv8 Rads for smoothed trend for Gray03/06 FVs (Teff=6360K) Rad(F6V) = 1.3586 Rsun ; Teff=6350K, logL=0.432 Rad(F6V) = 1.329 Rsun ; Gray03/06 F6Vs median from TIC9/Stassun19 (N=23) => adopt Rad(F6V) = 1.359 Rsun [updated 9/26/2020] Mass(F6V) = 1.31 Msun ; EEM Teff vs. Mass fit for binaries (Teff=6360K) Mass(F6V) = 1.29 Msun ; HenryMcCarthy93 calibration for Mv=3.7 Mass(F6V) = 1.25 Msun ; Ekers18 ML calibration for logL=0.428 Mass(F6V) = 1.25 Msun ; pri. stan. HD 30652 (Holmberg09) Mass(F6V) = 1.25 Msun ; EEM logL vs. Mass fit for binaries (logL=0.428) Mass(F6V) = 1.22 Msun ; Bertelli09 solar tracks for Teff=6360K,logL=0.428 Mass(F6V) = 1.22 Msun ; EEM Mv vs. Mass fit for binaries (Mv=3.7) => adopt Mass(F6V) = 1.25 Msun [update 12/29/2019] # No standard MK78, Keenan85 & Corbally86 do not list a F6V standard # Anchor standard HD 30652 = pi^3 Ori = 1 Ori = HIP 22449 = HR 1543 = GJ 178 *F6V: MK43,JM53,Morgan65,Morgan71,Garrison72(stan),MK73(dagger),MorganAbt73,Cowley74(stan),Gray89(stan),Garrison94,Garrison96 F6V-IV: Gray01 No Houk type. Morgan65 calls pi3 Ori the F6V "fundamental classification standard". Garrison96 lists it as the only F6V star among the brightest ~300 stars on the sky with V<3.55mag. B-V(HIP)=0.484, B-V=0.451+-0.009(Mermilliod91), U-B=-0.009+-0.014(Mermilliod91), V=3.187+-0.007(Mermilliod91), Vmag=3.19, Mv=3.67, dMv=-0.03, par=124.6+-0.9 mas. PASTEL median values: = 6424K(N=20), =4.30(N=9), [Fe/H]>=+0.01(N=11). Mass = 1.25 Msun (Holmberg09). # Secondary Standard HD 142860 = gam Ser = HIP 78072 = HR 5933 = GJ 603 F5: Cannon *F6V: JM53, Jaschek78,Garcia89,Gray01,GrayNstars(only F6V stan),Houk(stan? not in catalog) F7VAB: Kennedy83 B-V(HIP)=0.478, Vmag=3.85, Mv=3.59, dMv=-0.07, par=88.86+-0.18 mas. PASTEL median values: = 6268K(N=27), ~ 4.1, <[Fe/H>~-0.2. # Exemplar HD 9021 = 38 Cas = HR 427 *F6V: Adams35, Cowley76, Cowley79, Abt09 Four published spectral classifications, all F6V. No Houk type (too far north). Not considered a standard in any literature, but there has been good agreement on the subtype among expert classifiers (Adams, Cowley, Abt). V = 5.820(Mermilliod91), B-V=0.464+-0.005(Mermilliod91). PASTEL: = 6298K(N=2). Mv = 3.51(HIP,HIP2). 1 Eri = tau01 Eri = HR 818 = HD 17206 F5V: Cowley76,Adams35 F5/6V: Houk88 *F6V: Gray06,Bidelman85(F6),Malaroda75,Roman50 F7V: Abt09 F8V: Gray89 Surprising lack of agreement for a star that appears to be a ~solar composition dwarf. V=4.465+-0.007(Mermilliod91), B-V=0.479+-0.011(Mermilliod91), U-B=0.000+-0.015(Mermilliod91). PASTEL values: =6231K(N=5), <[Fe/H]> = 0.05(N=4), logg=4.50(N=4). plx = 70.7449 0.4515 mas (GaiaDR2), plx = 70.32 1.83 mas (HIP2). Mv = 3.713+-0.016(Mermilliod91,GaiaDR2). Note that color and absolute magnitude is very close to mean for other F6Vs. HD 58855 = 22 Lyn = HR 2849 = HIP 36439 F5V: Adams35 *F6V: Roman52(lines strong),Cowley76,Gray01 Slightly metal poor but good agreement on subtype. V=5.373+-0.015(Mermilliod91), V=5.35(HIP), B-V=0.449+-0.014(Mermilliod91), B-V=0.470+-0.003(HIP), U-B=-0.067+-0.019(Mermilliod91), G=5.224(GaiaEDR3). G-V = 5.224 - 5.35 = -0.126. 2MASS photometry is poor. plx=49.0145+-0.1406mas(GaiaEDR3), plx=49.41+-0.36mas(HIP2). E(b-y)=0.01(Gray01). PASTEL compendium: = 6369K(N=7), =4.315(N=6), <[Fe/H]>=-0.30(N=6). Mv = HD 3158 = HR 140 F3IV-V: Malaroda75 *F6V: 1953AnHar.119....1H,Houk78,Gray06 HD 149837 = HR 6177 = HIP 8165 F2III-IV: Malaroda75 *F6V: 1953AnHar.119....1H,Houk75,Gray06 # Deprecated Standards HD 173667 = 110 Her = HR 7061 = HIP 92043 = GJ 725.2 = GJ 9635 F3V: Adams35 F5V: Wilson50,Bouw81 F5IV: Maury1897,MK43 F5III: 1978A&AS...35...75C *F5.5IV-V: Gray01 F6V: Morgan38,JM53,Cowley76(stan),Jaschek78 F6: Bidelman85 F7IVb: Barry70(uv metals wk) No Houk type. Clearly somewhat evolved as it is 0.91 mag above MS with logg~4.0. B-V(HIP)=0.483, Vmag=4.19, Mv=2.79, dMv=-0.91, par=52.4+-0.6 mas. PASTEL: =3.98(N=13). HD 170153 = chi Dra F6V: MK43,Roman52(lines strong) F7V: JM53,Cowley67,Jaschek64(most),Cowley76 F7V mw: Gray01(metal weak) F8Vb: Barry70(uv metals vweak) fF8gF6mF6: Jaschek89 F8: Cannon Morgan changed it from F6V (MK43) to F7V (JM53), then later it was considered a metal weak F7V or F8V. Probably not the best choice of standard. Note that these stars all have B-V ~ 0.48, but varies by 200K ! # Other stars Morgan65 classified five F6V Hyads: HD 27483, 27534, 27848, 28406, 28483. HD 28406 (Hyad) was called F6V by Treanor60, Morgan65, Kenyon94, & Gray01 PASTEL Teffs & metallicities for Gray0(clipped <1980 values) [Fe/H] Teff eFe/H ID# bibcode -0.980 6222 HD_106516_ 1988A&A...199..269H -0.950 5860 HD_106516_ 1984Msngr..38...33E -0.920 6072 HD_106516_ 1981ApJ...244..989P -0.860 5995 HD_106516_ 1994A&A...291..895A -0.820 6222 HD_106516_ 1986A&A...160..264F -0.820 6222 HD_106516_ 1986A&A...165..183F -0.780 6200 0.040 HD_106516_ 2000AJ....120.1841F -0.770 5929 HD_106516_ 1986ApJ...303..724B -0.770 6168 0.070 HD_106516_ 2007A&A...465..271R -0.760 6146 HD_106516_ 2006A&A...449..127Z -0.740 6069 HD_106516_ 2006MNRAS.367.1329R -0.730 6258 0.050 HD_106516_ 2013ApJ...764...78R -0.730 6300 0.060 HD_106516_ 2015ApJ...808..148S -0.720 6165 0.100 HD_106516_ 2004A&A...418..551M -0.720 6232 HD_106516_ 2003A&A...404..187G -0.710 6135 0.100 HD_106516_ 2000A&AS..141..491C -0.700 5935 HD_106516_ 1994A&A...290..217S -0.700 6247 HD_106516_ 1993A&A...275..101E -0.690 6327 HD_106516_ 2014A&A...568A..25N -0.680 6196 0.040 HD_106516_ 2010A&A...511L..10N -0.660 6267 HD_106516_ 1996A&A...314..191G -0.640 6316 HD_106516_ 2017AJ....153...21L -0.620 6222 HD_30743_ 1990ApJ...354..310B -0.610 6072 HD_106516_ 1980ApJ...235..491P -0.610 6269 HD_106516_ 1997A&A...326..751N -0.530 6072 HD_216385_ 1986A&A...160..264F -0.510 HD_69897_ 1988A&A...195..226F -0.490 6072 HD_216385_ 1986A&A...165..183F -0.480 6288 0.100 HD_30743_ 1997A&A...323..909F -0.470 6284 0.030 HD_30743_ 2005PASJ...57...27T -0.470 6401 0.120 HD_106516_ 2015A&A...580A..24D -0.450 6298 0.070 HD_30743_ 1998A&A...338..161F -0.450 6298 0.070 HD_30743_ 2000A&A...362.1077Z -0.440 6212 0.090 HD_114837_ 2007A&A...465..271R -0.440 6450 0.070 HD_30743_ 2015ApJ...808..148S -0.420 6295 0.100 HD_30743_ 1997A&A...323..909F -0.410 6142 HD_216385_ 1990ApJ...354..310B -0.400 6122 HD_89125_ 2004AN....325....3F -0.400 6191 0.090 HD_114837_ 1999A&A...348..487R -0.400 6248 0.090 HD_58855_ 2007A&A...465..271R -0.390 6041 0.090 HD_69897_ 2012A&A...541A..40M -0.390 6085 0.020 HD_89125_ 2005PASJ...57...27T -0.380 6143 HD_89125_ 1996A&A...314..191G -0.380 6158 HD_89125_ 1993A&A...275..101E -0.370 6019 0.050 HD_20010_ 2007A&A...465..271R -0.370 6110 0.070 HD_215648_ 2000Priv.C........F -0.370 6176 HD_215648_ 1990ApJ...354..310B -0.370 6342 HD_30743_ 1996A&A...314..191G -0.360 6038 0.100 HD_89125_ 2000A&AS..141..491C -0.360 6156 0.110 HD_215648_ 2005A&A...442..635B -0.360 6187 HD_89125_ 2017AJ....153...21L -0.360 6343 HD_68456_ 1990ApJ...354..310B -0.350 6000 0.070 HD_20010_ 1997A&A...323..809F -0.350 6119 0.070 HD_215648_ 2008MNRAS.384..173F -0.340 6246 0.050 HD_69897_ 2007A&A...465..271R -0.340 6545 HD_30743_ 1984Msngr..38...33E -0.330 6128 0.020 HD_89125_ 2018MNRAS.479.1332M -0.330 6222 HD_216385_ 1989A&A...208..171G -0.330 6425 HD_30743_ 1993A&A...275..101E -0.320 6228 HD_215648_ 1993A&A...275..101E -0.320 6309 0.060 HD_58855_ 2000Priv.C........F -0.310 6187 0.010 HD_69897_ 2005PASJ...57...27T -0.310 6286 0.100 HD_58855_ 2000A&AS..141..491C -0.310 6450 0.060 HD_69897_ 2003AJ....126.2015H -0.300 6073 0.050 HD_20010_ 2013ApJ...764...78R -0.300 6078 0.030 HD_20010_ 2004A&A...420..183A -0.300 6184 HD_215648_ 1996A&A...314..191G -0.300 6186 0.050 HD_216385_ 2007A&A...465..271R -0.300 6200 HD_216385_ 2000ApJ...530..939C -0.300 6480 0.040 HD_69897_ 2006AJ....131.3069L -0.290 6263 HD_114837_ 1996A&A...314..191G -0.290 6303 0.080 HD_114837_ 2013ApJ...764...78R -0.290 6410 0.050 HD_58855_ 2015ApJ...808..148S -0.290 6457 HD_68456_ 1996A&A...314..191G -0.280 6000 HD_215648_ 1986ApJ...309..762B -0.280 6015 0.070 HD_20010_ 2010MNRAS.405.1907B -0.280 6160 HD_215648_ 2003ARep...47..422M -0.280 6219 0.070 HD_142860_ 2007A&A...465..271R -0.280 6243 0.100 HD_69897_ 2000A&AS..141..491C -0.280 6274 HD_69897_ 2017AJ....153...21L -0.280 6314 HD_114837_ 1993A&A...275..101E -0.280 6369 0.060 HD_58855_ 2013ApJ...764...78R -0.270 6118 0.060 HD_89125_ 2012A&A...541A..40M -0.270 6152 HD_20010_ 1990ApJ...354..310B -0.260 6115 0.070 HD_142860_ 2010MNRAS.405.1907B -0.260 6212 0.070 HD_216385_ 2000Priv.C........F -0.260 6232 HD_216385_ 2006A&A...449..127Z -0.260 6301 HD_69897_ 1996A&A...314..191G -0.260 6347 0.050 HD_69897_ 2013ApJ...764...78R -0.260 6365 HD_69897_ 1993A&A...275..101E -0.260 6376 0.070 HD_215648_ 2006AJ....131.3069L -0.260 6536 HD_68456_ 1993A&A...275..101E -0.255 6232 0.041 HD_69897_ 2010MNRAS.403.1368G -0.250 6240 0.040 HD_69897_ 2015ApJ...808..148S -0.250 6247 0.070 HD_69897_ 2003MNRAS.340..304R -0.250 6288 HD_216385_ 1993A&A...275..101E -0.250 6288 0.070 HD_216385_ 1999MNRAS.305..693C -0.240 5998 HD_206826_ 2017AJ....153...21L -0.240 6186 HD_20010_ 2018AJ....155..111L -0.240 6280 HD_20010_ 2006AJ....131.3069L -0.240 6280 0.050 HD_20010_ 2005AJ....129.1063L -0.240 6330 0.050 HD_69897_ 2014A&A...563A..53Z -0.240 6350 0.070 HD_215648_ 2003AJ....126.2015H -0.240 6380 HD_114837_ 1984Msngr..38...33E -0.240 6523 HD_68456_ 2018AJ....155..111L -0.230 6250 HD_216385_ 1996A&A...314..191G -0.230 6294 0.030 HD_69897_ 2005ApJS..159..141V -0.230 6400 HD_142860_ 2006AJ....131.3069L -0.230 6400 0.060 HD_142860_ 2005AJ....129.1063L -0.220 6146 HD_128429_ 1986ApJ...303..724B -0.220 6146 HD_206826_ 1986ApJ...309..762B -0.220 6195 HD_20010_ 2017AJ....153...21L -0.220 6204 0.030 HD_215648_ 2005ApJS..159..141V -0.220 6227 0.100 HD_142860_ 2000A&AS..141..491C -0.220 6292 0.060 HD_216385_ 2013ApJ...764...78R -0.210 6146 HD_215648_ 1999ApJ...521..753T -0.210 6249 0.070 HD_219482_ 2019MNRAS.487.3162C -0.206 6170 0.025 HD_20010_ 2010MNRAS.403.1368G -0.200 6221 0.020 HD_215648_ 2005PASJ...57...27T -0.200 6240 0.060 HD_20010_ 2001A&A...373.1019S -0.200 6246 0.040 HD_142860_ 2004A&A...420..183A -0.200 6250 0.090 HD_216385_ 1999A&A...348..487R -0.200 6313 0.020 HD_215648_ 2018MNRAS.479.1332M -0.200 6395 HD_58855_ 2017AJ....153...21L -0.200 6431 0.090 HD_128429_ 2018A&A...614A..55A -0.200 6500 0.160 HD_20010_ 2004A&A...427.1009A -0.190 6229 0.020 HD_216385_ 2005PASJ...57...27T -0.190 6250 HD_215648_ 2017AJ....153...21L -0.190 6254 0.070 HD_142860_ 1998A&A...338..161F -0.190 6275 0.060 HD_20010_ 2004A&A...415.1153S -0.190 6300 HD_142860_ 1992ApJ...387..170F -0.190 6313 HD_128429_ 1990ApJ...354..310B -0.190 6313 0.060 HD_142860_ 2019MNRAS.487.3162C -0.190 6313 0.070 HD_142860_ 2013ApJ...764...78R -0.180 6199 0.040 HD_20010_ 2014A&A...562A..71B -0.180 6262 0.030 HD_142860_ 2005ApJS..159..141V -0.180 6268 HD_142860_ 1996A&A...314..191G -0.180 6275 HD_216385_ 2017AJ....153...21L -0.180 6300 HD_114837_ 1999ApJ...521..753T -0.170 6265 HD_69897_ 2016ApJS..225...32B -0.170 6280 0.100 HD_59380_ 2000A&AS..141..491C -0.160 6209 0.037 HD_142860_ 2010MNRAS.403.1368G -0.160 6240 0.070 HD_216385_ 2003MNRAS.340..304R -0.160 6333 HD_142860_ 1993A&A...275..101E -0.160 6354 HD_206826_ 2017AJ....153...21L -0.140 6405 0.090 HD_3158_ 2013ApJ...764...78R -0.130 6281 0.030 HD_142860_ 2005PASJ...57...27T -0.130 6300 HD_142860_ 1986ApJ...309..762B -0.120 6286 HD_142860_ 2017AJ....153...21L -0.120 6380 HD_69897_ 1999ApJ...521..753T -0.120 6400 HD_216385_ 2003ARep...47..422M -0.120 6500 0.170 HD_20010_ 2004A&A...427.1009A -0.110 6359 0.030 HD_216385_ 2018MNRAS.479.1332M -0.110 6530 HD_28406_ 1999A&A...351..247V -0.100 6500 0.130 HD_17206_ 2004A&A...427.1009A -0.090 6361 0.040 HD_142860_ 2014A&A...570A..80T -0.080 6231 0.060 HD_17206_ 2004A&A...420..183A -0.070 6358 HD_59380_ 2017AJ....153...21L -0.060 6284 HD_199260_ 2018AJ....155..111L -0.060 6500 0.180 HD_17206_ 2004A&A...427.1009A -0.040 6233 HD_25621_ 1990ApJ...354..310B -0.040 6276 HD_216385_ 2002PASJ...54..103Q 0.010 6235 0.070 HD_210302_ 2010MNRAS.405.1907B 0.010 6456 HD_128429_ 2017AJ....153...21L 0.030 6219 HD_25621_ 1996A&A...314..191G 0.030 6404 HD_89569_ 2018AJ....155..111L 0.040 6270 HD_199260_ 2016ApJS..225...32B 0.040 6301 HD_25621_ 1993A&A...275..101E 0.040 6437 HD_3158_ 1996A&A...314..191G 0.050 6205 HD_17206_ 2006AJ....131.3069L 0.050 6205 0.120 HD_17206_ 2005AJ....129.1063L 0.050 6408 HD_3158_ 1993A&A...275..101E 0.060 6277 HD_219482_ 2018AJ....155..111L 0.060 6471 HD_210302_ 1990ApJ...354..310B 0.060 6499 0.060 HD_3158_ 2014A&A...562A..71B 0.090 6339 0.030 HD_210302_ 2005ApJS..159..141V 0.090 6469 0.040 HD_89569_ 2014A&A...570A..80T 0.090 6560 0.120 HD_28406_ 2010A&A...523A..71G 0.100 6307 HD_25621_ 2017AJ....153...21L 0.100 6405 0.040 HD_210302_ 2014A&A...570A..80T 0.110 6545 HD_28406_ 1988ApJ...332..410B 0.120 6390 HD_93372_ 2018AJ....155..111L 0.120 6422 HD_76653_ 2018AJ....155..111L 0.120 6462 HD_28483_ 1990ApJ...351..467B 0.130 6462 HD_28483_ 1989ApJ...336..798B 0.130 6545 HD_28406_ 1990ApJ...351..467B 0.140 6377 HD_210302_ 2018AJ....155..111L 0.140 6545 HD_28406_ 1989ApJ...336..798B 0.170 6395 HD_17206_ 2017AJ....153...21L 0.170 6505 HD_28406_ 2018AJ....155..111L 0.180 6272 HD_210302_ 2016ApJS..225...32B 0.279 6504 0.150 HD_17206_ 2010MNRAS.403.1368G trend: Teff = 6352K + 298.6*[Fe/H] rms=114K xHIP catalog metallicities and B-V for Gray03/06 F6Vs [Fe/H] B-V eFeH ID HD -0.72 0.449 0.04 HD_221950_ 116495 -0.67 0.470 0.01 HD_106516_ 59750 -0.42 0.456 0.01 HD_30743_ 22439 -0.40 0.497 0.08 HD_140408_ 77310 -0.38 0.443 0.08 HD_10453_ 7916 -0.35 0.447 0.08 HD_5028_ 3961 -0.34 0.500 0.01 HD_89125_ 50384 -0.29 0.489 0.02 HD_114837_ 64583 -0.28 0.470 0.02 HD_58855_ 36439 -0.26 0.487 0.01 HD_69897_ 40843 -0.26 0.502 0.01 HD_215648_ 112447 -0.26 0.511 0.08 HD_223408_ 117481 -0.24 0.437 0.02 HD_68456_ 39903 -0.23 0.476 0.08 HD_218522_ 114291 -0.22 0.543 0.01 HD_20010_ 14879 -0.20 0.487 0.01 HD_216385_ 112935 -0.20 0.493 0.08 HD_118261_ 66438 -0.19 0.464 0.03 HD_128429_ 71469 -0.17 0.521 0.08 HD_219482_ 114948 -0.16 0.501 0.08 HD_143463_ 78547 -0.14 0.512 0.08 HD_206826_ 107310 -0.13 0.460 0.08 HD_201772_ 104738 -0.13 0.487 0.02 HD_59380_ 36399 -0.11 0.484 0.08 HD_17926_ 13363 -0.09 0.507 9.99 HD_199260_ 103389 -0.08 0.487 0.08 HD_59099_ 36165 -0.07 0.476 0.08 HD_16538_ 12288 -0.06 0.488 0.08 HD_149837_ 81657 -0.05 0.480 0.08 HD_132301_ 73383 -0.04 0.482 0.08 HD_145158_ 79322 -0.02 0.481 0.08 HD_76653_ 43797 0.01 0.481 0.08 HD_89569_ 50493 0.02 0.481 0.02 HD_17206_ 12843 0.02 0.510 0.08 HD_93372_ 52535 0.05 0.505 0.02 HD_25621_ 18993 0.06 0.472 0.02 HD_3158_ 2711 0.07 0.489 0.02 HD_210302_ 109422 0.11 0.451 9.99 HD_28406_ 20948 0.11 0.470 0.02 HD_28483_ 21008 Trend (clipping the two lowest metallicity points): Teff = 0.4860 + 0.010287*[Fe/H] (rms=0.0227)