AA5V Garrison94 does not list a A5V anchor standard, and MK73 does not list a A5V dagger standard. The GrayGarrison89 standards HD 23194 & HD 23886 are probably best. MK43 standard: bet Ari - A5V JM53 standard: bet Ari, del Cas, 80 UMa - A5V Morgan65 standards: bet Ari, del Cas - A5V Cowley69 standard: del Cas, 80 UMa - A5V Houk75 standard: sig2 Tau (= HD 29488) - A5V (secondary standard) Cowley74 standard: del Cas, 80 UMa - A5V MK78 standard: HD 23886 (= Hz I 924) - A5V Keenan85 standard: HD 23886 - A5V GrayGarrison89 standards: HD 23194 (A5V) & HD 23886 (A5Vn). GrayAtlas standards: HD 23194 - A5V GrayNstars standard: HD 23194 - A5V Skiff08 flags only HD 23886 (MK78) as a A5V MK standard. For A5V Hipparcos stars within 75pc, with parallax S/N > 8, and within 1 mag of the MS (N=18): (A5V) = 0.415 (+-0.009 sem, +-0.049 stdev; N=18) (A5V) = 0.454 (+-0.014 sem, +-0.061 stdev; N=18) (A5V) = 0.508 (+-0.017 sem, +-0.044 stdev; N=18) (A5V) = 0.045 (+-0.012 sem, +-0.049 stdev; N=18) (A5V) = 0.056 (+-0.006 sem, +-0.021 stdev; N=18) (A5V) = 0.227 (+-0.006 sem, +-0.020 stdev; N=18) (A5V) =-0.027 (+-0.001 sem, +-0.005 stdev; N=18) (A5V) = 0.727 (+-0.018 sem, +-0.052 stdev; N=18) (A5V) = 0.210 (+-0.006 sem, +-0.020 stdev) ; HIP d<75pc S/N>8(N=18) (B-V)(A5V) = 0.207 ; exemplar HD 120047 = HD 5179 (B-V)(A5V) = 0.207 ; exemplar HD 74706 = HR 3473 (see below) (B-V)(A5V) = 0.185 ; BakisEker22 (A5V) = 0.175 (+-0.008 sem, +-0.012 stdev) ; Gray01/03/06 N=2) (B-V)(A5V) = 0.170 ; SIMBAD d<60pc N=13 (B-V)(A5V) = 0.167 ; ter. stan. HD 116842 = 80 UMa (UMa) (B-V)(A5V) = 0.161 ; prim. stan. HD 23194 (EEM dereddened using E(B-V)=0.04) (B-V)(A5V) = 0.157 ; smoothed trend SpT vs (B-V)o B9.5V-F3V 11/2021 (B-V)(A5V) = 0.15 ; JohnsonMorgan53,Johnson63 (B-V)(A5V) = 0.15 ; Garrison67 (B-V)(A5V) = 0.15 ; SchmidtKaler82 (B-V)(A5V) = 0.15 ; Fitzgerald70 (B-V)(A5V) = 0.147 ; sec. stan. sig2 Tau (B-V)(A5V) = 0.14 ; Johnson66 (B-V)(A5V) = 0.14 ; Bessell79, KenyonHartmann95 (B-V)(A5V) = 0.138 ; prim. stan. HD 23886 (EEM dereddened using E(B-V)=0.04) (B-V)(A5V) = 0.13 ; Morgan71 (B-V)(A5V) = 0.099 ; Crawford76 => adopt (B-V)(A5V) = 0.16 *** [updated 9/20/2019] => adopt (U-B)(A5V) = 0.100 => adopt (V-I)(A5V) = 0.186 => adopt (V-R)(A5V) = 0.089 => adopt (R-I)(A5V) = 0.097 => adopt (V-J)(A5V) = 0.334 => adopt (V-H)(A5V) = 0.365 => adopt (V-Ks)(A5V) = 0.403 => adopt (H-Ks)(A5V) = 0.038 => adopt (J-H)(A5V) = 0.031 (Bp-Rp)(A5V) = 0.194 ; color trend for B-V=0.16 (Bp-Rp)(A5V) = 0.229 ; Evans18 trend for V-I=0.186 (Bp-Rp)(A5V) = 0.2712 ; HD 74706 = HR 3473 exemplar (Bp-Rp)(A5V) = 0.2818 ; HD 120047 = HD 5179 exemplar => adopt (Bp-Rp)(A5V)= 0.194 [updated 11/22/2020] (Bp-G)(A5V) = 0.062 ; color trend for B-V=0.16 (Bp-G)(A5V) = 0.109 ; HD 120047 = HD 5179 exemplar (Bp-G)(A5V) = 0.1160 ; HD 74706 = HR 3473 exemplar => adopt (Bp-G)(A5V) = 0.062 [updated 11/22/2020] (G-Rp)(A5V) = 0.130 ; color trend for B-V=0.16 (G-Rp)(A5V) = 0.1552 ; HD 74706 = HR 3473 exemplar (G-Rp)(A5V) = 0.173 ; HD 120047 = HD 5179 exemplar => adopt (G-Rp)(A5V) = 0.130 [updated 11/22/2020] (Ks-W1)(A5V) = 0.046 ; EEM trend for d<30pc for B-V=0.16 => adopt (Ks-W1)(A5V) = 0.046 [updated 12/29/2019] (G-V)(A5V) = -0.079 ; * rho03 Eri PM* A5V (G-V)(A5V) = -0.048 ; * tau Peg dS* A5Vp_lB (G-V)(A5V) = -0.040 ; * tet02 Ser PM* A5Vn (G-V)(A5V) = -0.037 ; HD 74706 = HR 3473 exemplar (G-V)(A5V) = -0.034 ; * tet01 Ser PM* A5V (G-V)(A5V) = -0.032 ; * phi Leo PM* A5V (G-V)(A5V) = -0.032 ; * sig02 Tau PM* A5Vn (G-V)(A5V) = -0.031 ; polynomial fit f(B-V) (G-V)(A5V) = -0.030 ; HD 120047 PM* A5V (G-V)(A5V) = -0.025 ; HD 159170 PM* A5V (G-V)(A5V) = -0.022 ; HD 120047 = HD 5179 exemplar (G-V)(A5V) = -0.020 ; * 4 Ser PM* A5V (G-V)(A5V) = -0.015 ; interp A4V(-0.01) and A6V(-0.02) (G-V)(A5V) = -0.015 ; HD 210715 PM* A5V (G-V)(A5V) = -0.007 ; fit for A dwarfs from Kervella19 corrected for E(B-V), eval for (V-Ks)=0.403 (G-V)(A5V) = 0.002 ; * iot Cyg PM* A5V (G-V)(A5V) = 0.009 ; * 72 Oph PM* A5V => adopt (G-V)(A5V) = -0.015 [updated 4/8/2022] (U-B)(A5V) = 0.06 ; HD 120047 = HD 5179 exemplar (U-B)(A5V) = 0.09 ; JohnsonMorgan53 (U-B)(A5V) = 0.09 ; Fitzgerald70 (U-B)(A5V) = 0.093 ; HIP d<75pc S/N>8 A5V N=28 (Mermilliod91 photometry) (U-B)(A5V) = 0.11 ; Johnson66 (A5V) = 0.232 (+-0.008 sem, +-0.021 stdev) ; HIP d<75pc S/N>8 (N=18) (A5V) = 0.195 (+-0.007 sem, +-0.011 stdev; N=2) (A5V) = 0.155 ; Bessell79 (R-I)(A5V) = 0.084 ; Bessell79 (g-r)(A5V) = 0.036 ; Jordi06 (V-R)=>(g-r) for V-R=0.089 (g-r)(A5V) = -0.072 ; Bilir05 (B-V)=>(g-r) for B-V=0.16 (g-r)(A5V) = -0.10 ; Covey07 => adopt (g-r)(A5V) = -0.07 [updated 10/10/2020] Teff(A5V) = 8500 K ; Bessell79 Teff(A5V) = 8300 K ; median Teff for 7 A5V from Gray17 Teff(A5V) = 8290 K ; pri. stan. HD 23194 Teff(A5V) = 8244 K ; pri. stan. HD 23886 Teff(A5V) = 8200 K ; Schmidt-Kaler82 Teff(A5V) = 8180 K ; GrayCorbally94 Teff(A5V) = 8170 K ; Theodossiou90 Teff(A5V) = 8150 K ; GrayCorbally09 Teff(A5V) = 8127 K ; sec. stan. HD 29488 Teff(A5V) = 8093 K ; EEM N=108 Teffs Teff(A5V) = 8054 K ; mean photometric Teff Teff(A5V) = 8008 K ; sec. stan. HD 116842 (Alcor) Teff(A5V) = 8000 K ; Blackwell80 Teff(A5V) = 7925 K ; Zorec12 median Teff(A5V) = 7788 K ; HD 120047 = HD 5179 exemplar Teff(A5V) = 7762 K ; HD 74706 = HR 3473 exemplar ([Fe/H] ~ +0.19) Teff(A5V) = 7686 K ; Boyajian12 => adopt Teff(A5V) = 8100 K (logT = 3.908) [updated 9/16/2019] [EEM: note that of 7 A5V classified by Gray17, all had 8200K < Teff < 8450K] BCv(A5V) = -0.053 mag ; Flower96(Teff=8100K, BCv(5772K)=-0.085) BCv(A5V) = -0.020 mag ; Schmidt-Kaler82(BCv=-0.15 + 0.13 offset) BCv(A5V) = -0.007 mag ; Bessell98(ATLAS,logg=4.5,Teff=8100K) BCv(A5V) = -0.006 mag ; Code76(Teff=8100K, BCv(5772K)=-0.085) BCv(A5V) = 0.00 mag ; EEM trend mid-As BCv(A5V) = 0.018 mag ; Balona94(Teff=8100K, BCv(5772K)=-0.085) BCv(A5V) = 0.037 mag ; Bertone04(Teff=8100K,ATLAS, BCv(5772K)=-0.085) => adopt BCv(A5V) = 0.00 [updated 4/4/2020; so that BCv(5772K)=-0.085] logg(A5V) = 4.0 ; median logg for 7 A5V from Gray17 Mv(A5V) = 1.28 mag ; sec. stan. HD 29488 = sig2 Tau (Hyad) Mv(A5V) = 1.46 mag ; Wegner07 Mv(A5V) = 1.57 mag ; exemplar HD 74706 = HR 3473 Mv(A5V) = 1.61 mag ; d<60pc A5V SIMBAD Mv(A5V) = 1.74 mag ; median Mv for A5V calc using Kervella19 HIP & Gaia DR2 (d<100pc) Mv(A5V) = 1.78 mag ; d<60pc Mv(B-V=0.16) Mv(A5V) = 1.84 mag ; Wright05(B-V=0.16) Mv(A5V) = 1.84 mag ; linear B-V vs. Mv fit to d<50pc Gray01/03/06 dwarfs for B-V=0.16 Mv(A5V) = 1.9 mag ; Schmidt-Kaler82 Mv(A5V) = 1.91 mag ; interp BAF dwarf seq for B-V=0.16 Mv(A5V) = 2.01 mag ; A dwarf B-V vs. Mv sequence for B-V=0.16 Mv(A5V) = 2.04 mag ; ter. stan. HD 116842 = 80 UMa (UMa) Mv(A5V) = 2.1 mag ; GrayCorbally09 Mv(A5V) = 2.22 mag ; pri. stan. HD 23886 = Cl Melotte 22 2289 (Pleiad) Mv(A5V) = 2.28 mag ; exemplar exemplar HD 120047 = HR 5179 Mv(A5V) = 2.30 mag ; pri. stan. HD 23194 = Cl Melotte 22 232 (Pleiad) => adopt Mv(A5V) = 2.01 [updated 9/24/2020] => adopt M_G(A5V) = 1.98 [updated 12/10/2020] (Mv=2.01, G-V=-0.03) => adopt M_Ks(A5V) = 1.607 [updated 12/30/2020] (Mv=2.01, V-Ks=0.403) logL(A5V) = 1.47 dex ; Zorec12 median logL(A5V) = 1.390 dex ; sec. stan. HD 29488 = sig2 Tau (Hyad, ~700 Myr) logL(A5V) = 1.268 dex ; exemplar HD 74706 = HR 3473 logL(A5V) = 1.092 dex ; Mv=2.01 & BCv=0.00 => Mbol = 2.010 logL(A5V) = 1.078 dex ; ter. stan. HD 116842 = 80 UMa (UMa, ~500 Myr) logL(A5V) = 1.013 dex ; pri. stan. HD 23886 = Cl Melotte 22 2289 (Pleiad, ~125 Myr) logL(A5V) = 0.985 dex ; exemplar HD 120047 = HR 5179 logL(A5V) = 0.977 dex ; pri. stan. HD 23194 = Cl Melotte 22 232 (Pleiad, ~125 Myr) => adopt logL(A5V) = 1.092 dex [updated 9/24/2020] => adopt Mbol(A5V) = 2.010 mag [updated 9/24/2020] Mass(A5V) = 2.533+-0.050 Msun ; Eclipsing binary WX Cep A (Torres10) Mass(A5V) = 2.13 Msun ; Zorec12 median Mass(A5V) = 1.88 Msun ; EEM Mv vs. Mass fit for binaries (Mv=1.84) Mass(A5V) = 1.86 Msun ; Ekers15 ML calibration for logL= Mass(A5V) = 1.85 Msun ; EEM Teff vs. Mass fit for binaries (Teff=8080K) Mass(A5V) = 1.84 Msun ; EEM logL vs. Mass fit for binaries (logL=1.16) Mass(A5V) = 1.79 Msun ; non-standard Castor B (Torres02; Teff=8240K) => adopt Mass(A5V) = 1.86 Msun [updated 9/16/2019] Rad(A5V) = 2.498 Rsun ; sec. stan. HD 29488 = sig2 Tau (Hyad) Rad(A5V) = 2.380 Rsun ; exemplar HD 74706 = HR 3473 Rad(A5V) = 1.798 Rsun ; ter. stan. HD 116842 = 80 UMa (UMa) Rad(A5V) = 1.785 Rsun ; logL=1.092,Teff=8100K Rad(A5V) = 1.708 Rsun ; exemplar HD 120047 = HR 5179 Rad(A5V) = 1.574 Rsun ; pri. stan. HD 23886 = Cl Melotte 22 2289 (Pleiad) Rad(A5V) = 1.490 Rsun ; pri. stan. HD 23194 = Cl Melotte 22 232 (Pleiad) => adopt Rad(A5V) = 1.785 Rsun [updated 9/24/2020] # No standard MK73 does not list a A5V standard. Houk does not provide an A5V primary standard, but a secondary one # Primary Standards HD 23194 = Cl Melotte 22 232 (Pleiad) *A5V: Mendoza56,Jaschek64,Jaschek78,GrayGarrison89(stan),Gray01,GrayAtlas A2: Cannon kA5hA7VmA7: Abt78 GrayGarrison89 list it as their low-vsini A5V standard. B-V=0.201(Mermillliod91), but for E(B-V)=0.04 (Av=0.124), then (B-V)o=0.161. plx = 7.4181+-0.0635 mas (GaiaDR2). Teffs: 8031+-105K(Prugniel11), 8137K(GaiaDR2), 8253K(Gebran16), 8290K(Gray01), 8430+-100K(Burkhart97), 8430+-200K(Hui-Bon-Hoa98), 8542K(Conti68) => = 8290K. logg=4.00+-0.08(Prugniel07). V=8.07. Luminosity: V=8.07, plx=7.4181, Av=0.124, BCv=0.00 => Mv=2.30, Mbol=2.30, logL=0.977 => for Teff=8290K => Rad = 1.490Rsun. HD 23886 = Cl Melotte 22 2289 (Pleiad) A2V: Adams35 A3V: Mendoza56 A4V: Abt78 A5V: Atanasijevic58(BCD type),MK78(stan),Keenan85 *A5Vn: GrayGarrison89(stan),Gray01 GrayGarrison89 list it as their high-vsini A5V standard (vsini=165 km/s). Pleiad, so assume E(B-V)=0.04 and Av=0.124. V=7.969+-0.010(Mermilliod91), B-V=0.178+-0.002(Mermilliod91), (U-B)=0.130(Mermilliod91) => (B-V)o=0.138. Teffs: 8238K(Stassun18), 8244K(GaiaDR2), 8974+-145K(David15) => = 8244K. logg=4.343+-0.091(David15). V=8.01. plx = 7.3552+-0.0671 mas(GaiaDR2), plx=7.4549+-0.0323mas(GaiaEDR3). Luminosity: adopting V=7.969, plx=7.4549mas, Av=0.124, BCv=0.00 => Mv=2.21, Mbol=2.21, logL=1.013 => w/Teff=8244K => Rad = 1.574Rsun. # Secondary Standards HD 29488 = sig2 Tau = HIP 65477 = HR 1479 (Hyad) A3: Cannon A5: Ljunggren61 A5n: Wilson48 A5IV-V: GrayGarrison89 A5V: Adams35(SB),Slettebak55,Houk(sec. stand.) *A5Vn: Morgan65,Cowley69 A6V: Barry70, Abt95 A7V: 1940ApJ....91..256T A8: 1920AN....211..289K Only Hyad classified A5V by Morgan65. del(Mv)=+0.13. Given its consistent A5 classification by Houk,Morgan,Cowley,Gray,Garrison, and MS position, this is probably an adequate A5V standard. V=4.962+-0.010(Mermilliod91), (B-V)=0.147+-0.008(HIP,Mermilliod91), (U-B)=0.128+-0.009(Mermilliod91). In Hyades, so assume negligble reddening. plx=18.2308+-0.1946mas(GaiaEDR3), plx=20.97+-0.27mas(HIP2). Teff: 7614K(GaiaDR2), 7854K(Masana06), 8054K(Zorec12), 8127K(David15#2), 8146K(Gebran10), 8165K(David15#1), 8540K(Sokolov95) => = 8127K. logg=3.96+-0.14(David15). vsini=160km/s. logL=1.430+-0.048(Stassun19). Luminosity: V=4.962, plx=18.2308, Av=0.00, BCv=0.00 => Mv=1.27, Mbol=1.27, logL=1.390 => w/Teff=8127K => Rad=2.498Rsun. # Tertiary Standards HD 116842 = 80 UMa = g UMa = Alcor = HR 5062 = HIP 65477 (Ursa Major cluster member) A2: 1966UppAn...5d...1O A3V: Maury1897 A4.5V: Palmer68 *A5V: MK43,JM53,Cowley69(stan),Levato78(A5:V),Bouw81,Loden83,GrayGarrison89(A5Vn),Abt95(A5Vn) A6V: Bouigue59,Gray01(A6Vnn),Gray03(A6Vnn) A6/7Va: Barry70(uv metals very weak) F0V: Cucchiaro80(S2/68 spectra) I'm going to go with continuity here - it was A5V from 1943-1995. Gray changed between 1989 and 2001-2003. Probably OK A5V standard, but has dim M dwarf companion: Mamajek09 discovered M-type companion at ~1" separation (P1640 team around same time). V=4.009+-0.006(Mermilliod91), B-V(HIP)=0.169, B-V=0.167+-0.004(Mermilliiod91). plx=39.91+-0.13mas(HIP2), plx=40.4651+-0.1374mas(GaiaEDR3). dMv=+0.13, SB. Teffs: 7648K(GaiaDR2), 7943K(Zorec12), 7955K(Gray03), 8008K(Blackwell98), 8066K(LeBorgne03), 8123K(diBenedetto98), 8221K(David15) => = 8008K. Luminosity: V=4.009, plx=40.4651mas, BCv=0.00, Av=0 => Mv=2.04, Mbol=2.04, logL=1.078 => w/Teff=8008K => Rad=1.798Rsun. # Exemplars HD 74706 = HR 3473 = HIP 42928 *A5V: Cowley69,Houk88,Abt95 All 3 classifications in Skiff compnedium are A5V. Surprising jump from old Johnson B-V (~0.22) to Hipparcos/Tycho (~0.19). The V-Ks color (0.524) would be most consistent with intermediate value B-V=0.208, which I adopt above. Negligibly reddened E(B-V)=0.001(Kervella19,STILISM). V=6.10(HIP), V=6.103+-0.005(Mermilliod91), V=6.11(Johnson66), B-V=0.192+-0.005(TYC), B-V=0.195+-0.006(HIP), B-V=0.220+-0.000(Mermilliod91), B-V=0.22(Johnson66), V-Ic=0.21+-0.01(HIP). plx=12.4208+-0.0268mas(GaiaEDR3). GaiaDR2: plx=12.2593+-0.0619mas, G=6.0586+-0.0004 => corrected(Evans18) Gcor = 6.066, E(BR/RP)=1.150, Bp-Rp=0.2712, Bp-G=0.1160, G-Rp=0.1552. Mv=1.545+-0.012 (assuming Av=0.00). J=5.709+-0.023(2MASS), H=5.656+-0.038(2MASS), Ks=5.579+-0.023(2MASS), V-Ks = 6.103 - 5.579 = 0.524. Teffs: 7641+-85K(Masana06), 7677+-212K(Bai19), 7727+-109K(Stassun18), 7762+-54K(Zorec12), 7825K(Giridhar13), 7897K(GaiaDR2), 8064+-274K(David15) => = 7762K. logg=4.07+-0.14(David15), logg=4.05(Giridhar13), [Fe/H]=0.190(Giridhar13). G-V = 6.066 - 6.103 = -0.037. Luminosity: V=6.103, BCv=0.00, plx=12.4208mas, Av=0.003 => Mv=1.57, Mbol=1.57, logL=1.268 => w/Teff=7762K => Rad=2.380Rsun. HD 120047 = HR 5179 = HIP 67194 *A5V: Keenan41,Appenzeller67,Palmer68,Abt95(A5Vn) A7V: Cowley69 Negligibly reddened: E(B-V)=0.004(Kervella19,STILISM) => Av=0.012. V=5.88(HIP), V=5.870(Mermilliod91), B-V=0.210(Mermilliod91), B-V=0.211+-0.004(HIP), U-B=0.060(Mermilliod91), V-I=0.23+-0.01(HIP). plx=19.2182+-0.0354mas(GaiaEDR3). (B-V)o = (B-V) - E(B-V) = 0.211 - 0.004 = 0.207. GaiaDR2: plx=19.1641+-0.0581mas, G=5.8354+-0.0006 => Evans18 correction => G(corr)= 5.848 (no need to correct Bp & Rp), (Bp-Rp)=0.2818, (Bp-G)(corr)=0.109, (G-Rp)(corr)=0.173. G-V = 5.848 - 5.87 = -0.022. Teffs: 7709+-53K(Zorec12), 7709+-117K(Stassun19), 7730+-326K(Bai19), 7846K(GaiaDR2), 7953+-270K(Guillikson16,David15), 7987K(Gebran16) => =7788K. logg=4.3+-0.14(Guillikson16), logg=4.27+-0.14(David15). Luminosity: V=5.870, BCv=0.00, Av=0.012, plx=19.2182mas => Mv=2.28, Mbol=2.28, logL=0.985 => w/Teff=7788K => Rad=1.708Rsun. # Deprecated Standard HD 11636 = bet Ari = 6 Ari = HR 553 = GJ 80 = HIP 8903 A2: Ljunggren61 A4V: Abt85,GrayGarrison89,Garrison96,Abt95 A4: Olsen69 A5: Cannon,Cucchiaro78(A5m;S2/68 spectra) A5V: MK43,JM53,Jaschek64(all),Morgan65,Jaschek78,Garcia89 kA4hA5mA5Va: Gray03 (i.e. an A5Va!) A5IV: Maury1897,Barry70(A5IVb) Basically morphed from A5 under Morgan to A4 (Abt,Gray,Garrison), *despite* Morgan65 listing bet Ari as a "fundamental A5 classification standard" w/ del Cas i.e. it's a fundamental standard until someone comes along and changes it. Poor agreement on types. But note the B-V color is more typical of A4V. V=2.64(HIP), B-V=0.165+-0.003(HIP), B-V=0.135+-0.006(Mermilliod91), B-V=0.13(Johnson66), plx=55.60+-0.58mas(HIP2), dMv=-0.53 (color is closer to Houk's mean A4V B-V color). Tomkin87 (1987AJ.....94.1664T) calls it a "double-lined eccentric spectroscopic binary", and says the star has mass ~1.9Msun and its companion is late F or G0 (~1.1 Msun), and estimates mass ratio of M2/M1=0.57. Tomkin87 estimates delta(V) ~ 2.8mag, in which case the V mag from HIP (2.64) would correspond to V(A)=2.72 and V(B)=5.52. For the primary then: V(A)=2.72, plx=55.60 => Mv=1.45 (dMv=-0.26). HD 2262 = kap Phe = HR 100 = HIP 2072 A5Vn: GrayGarrison89 A5IVn: Gray06 A6Vn: Abt95,Houk78(overexposed,cites Garrison unpub.) A7V: Evans61,Jaschek78(Levato72),Kennedy83(Levato72),Hoffleit91 A3: Cannon Types vary from A5V-A7V, probably not a good standard (B-V[HIP]=0.175+-0.008) HD 8538 = del Cas = 37 Cas = HR 403 = HIP 6686 A5V: Cannon(A5),MK53,JM53,Jaschek64,Morgan65,Cowley69(stan),Jaschek78,Kennedy83, A5III-IV: Garcia89,Hoffleit91 A5III/IV: MK78 A5IV: GrayGarrison89,Gray01 Morgan65 lists del Cas as a "fundamental A5 classification standard" w/ bet Ari *Everyone* calls this A5-something par(HIP)=32.8+-1.5 mas, D~30pc (Local Bubble), B-V=0.160, dMv=-1.6mag (near turnoff) Probably should be considered excellent "A5IV" standard. HD 27934 = HR 1387 = kap01 Tau A5V: 1940ApJ....91..256T,Adasm35 A5IV: Palmer68 *A5IV-V: GrayGarrison89 A6V: Abt95 A7V: Slettebak55,Morgan65 A7IV-V: Cowley69 Only Hyad classifed as A7V by Morgan65. del(Mv)=-0.90mag. B-V=0.136. HD 159561 = HR 6556 = GJ 681 = alf Oph = Rasalhague A5Vnn: Garrison96 GrayGarrison89 reject Alf Oph as a suitable standard (long discussion). Vsini ~ 215 km/s. Binary. Morgan84 considers the star the A5III standard. HR 1479 = HD 29488 # Other Stars Morgan65 classified one Hyad as A5Vn (HD 29488). HD 165777 = HR 6771 = 72 Oph A3V: Maury1897 A4III: Abt81 A4IVs: Cowley69 A4V: Slettebak55,Levato72 A5: Olson69 A5IV-V: GrayGarrison89 (MnI 4030A sl weak) *A5V: Adams35(SB),Chalonge52(BCD),Palmer68,Cucchiaro78,Gray03 kA3hA7:mA7: Abt95 HD 202730 A = HR 8140 A3/5IV/V: Houk75 A4V: 1937AnHar.105...45H,1953AnHar.119....1H A5IV-V: GrayGarrison89 *A5V: 1955MmMtS..12....1W,Levato72,Levato75,Corbally84,Gray03(A5V(n)) A5m: Cucchiaro78 A6V: Abt95 7" binary with G0V(Corbally84), and Corbally84 classifies the unresolved pair as kA6hA6VmA8. HD 220061 = HR 8880 = tau Peg A4: Olson69 A5IV: Slettebak55,Levato72,Houk75(sec.stan.) A5V: Cowley69,Ortega83,GrayGarrison89,Andrillat95,Paunzen01 A5V lam Boo: Abt95 A7III: Chalonge52 *A8V(n)kA5mA5 (lambda Boo): Griffin12 A8VkA5mA5 MgII 4481A weak: Gray01 Am: Cucchiaro80 Extended discussion on spectrum in Griffin12. "This A8 dwarf appears to be a single star... it has been tentatively classified as \lambda Boo, but only has a rather mild metal deficiency of a factor of 2." Esrpamer: Teff=7655K, logg=3.78, vsini=154 km/s, [Fe/H]=-0.28.