Y1V Standards: Kirkpatrick12: WISE 0350-5658 - "tenative Y1 spectral standard" Teff(Y1V) = 325 K ; WISE J1828+2650 Dupuy13 #9 Teff(Y1V) = ~325 K ; Schneider15/WISE0350-5658 standard Teff(Y1V) = 350 K ; Leggett15 Teff(Y1V) = 350+-25 K ; Leggett16/W0350 standard Teff(Y1V) = ~350 K [300-400] K ; Schneider15/WISE2354 Teff(Y1V) = 355 K ; WISE_0350-5658 (Kirkpatrick19; plx=174.6+-2.6mas) standard Teff(Y1V) = 368 K ; Kirkpatrick20 (Table 13 polynomial) Teff(Y1V) = 374 K ; WISE_2354+0240 (Kirkpatrick19; plx=124.1+-4.9mas) Teff(Y1V) = ~375 K [350-400] K ; Schneider15/WISE0647-6232 Teff(Y1V) = 381 K ; WISE_0647-6232 (Kirkpatrick19; plx=100.3+-2.4mas) Teff(Y1V) = 388 K ; pri. stan. WISE J035000.32-565830.2 (Kirkpatrick20) standard Teff(Y1V) = 395 K ; WISE_1541-2250 (Kirkpatrick19; plx=167.1+-2.3mas) Teff(Y1V) = 398 K ; WISE_0535-7500 (Kirkpatrick19; plx=66.4+-2.4mas) Teff(Y1V) = 400 K ; Schneider15/WISE1541-2250 => adopt Teff(Y1V) = 360 K (logT = 2.556) [updated 2/2/2021] M_J(MKO)(Y1V) > 19.93 ; WISE_1930-2059 calc using Kirkpatrick20 (plx=106.3mas) M_J(MKO)(Y1V) > 20.37 ; CWISE_0940+5233 calc using Kirkpatrick20 (plx=66.4mas) M_J(MKO)(Y1V) > 20.43 ; CWISE_2230+2549 calc using Kirkpatrick20 (plx=71.3mas) M_J(MKO)(Y1V) = 20.53 ; WISE_0503-5648 calc using Kirkpatrick20 (plx=98.3mas) M_J(MKO)(Y1V) > 20.67 ; CWISE_0402-2651 calc using Kirkpatrick20 (plx=116.4mas) M_J(MKO)(Y1V) > 20.90 ; CWISE_1935-1546 calc using Kirkpatrick20 (plx=69.3mas) M_J(MKO)(Y1V) > 21.13 ; CWISE_0238-1332 calc using Kirkpatrick20 (plx=85.8mas) M_J(MKO)(Y1V) = 21.31 ; WISE_0535-7500 calc using Kirkpatrick20 (plx=68.7mas) M_J(MKO)(Y1V) = 21.74 ; CWISE_2256+4002 calc using Kirkpatrick20 (plx=101.8mas) M_J(MKO)(Y1V) = 22.18 (+-0.76 rms) ; Tinney14 M_J(MKO) N=2 M_J(MKO)(Y1V) > 22.26 ; CWISE_1446-2317 calc using Kirkpatrick20 (plx=95.6mas) M_J(MKO)(Y1V) = 22.74 ; WISE_1541-2250 calc using Kirkpatrick20 (plx=166.9mas) M_J(MKO)(Y1V) = 22.84 ; WISE_0647-6232 calc using Kirkpatrick20 (plx=99.5mas) M_J(Y1V) ~ 23 ; Leggett15 Fig. 3 (eyeball trend) M_J(MKO)(Y1V) = 23.41 ; WISE_0350-5658 calc using Kirkpatrick20 (plx=176.4mas) M_J(MKO)(Y1V) = 23.65 ; WISE_2354+0240 calc using Kirkpatrick20 (plx=130.6mas) M_J(MKO)(Y1V) > 26.69 ; WISE_0830+2837 calc using Kirkpatrick20 (plx=90.6mas) => adopt M_J(MKO)(Y1V) = 22.7 [updated 12/5/2020] M_Ks values are all upper limits at this point M_Ks(Y1V) > 17.20 ; CWISE_1935-1546 calc using Kirkpatrick20 (plx=69.3mas) M_Ks(Y1V) > 17.76 ; CWISE_1446-2317 calc using Kirkpatrick20 (plx=95.6mas) M_Ks(Y1V) > 17.99 ; CWISE_0238-1332 calc using Kirkpatrick20 (plx=85.8mas) M_Ks(Y1V) > 18.21 ; WISE_1930-2059 calc using Kirkpatrick20 (plx=106.3mas) M_Ks(Y1V) > 18.74 ; CWISE_0402-2651 calc using Kirkpatrick20(plx=116.4mas) M_K(Y1V) = 22.24 ; interp Y0V-Y2V => adopt M_Ks(Y1V) = 22.2 [updated 12/5/2020] (J(MKO)-K(MKO) = 0.5 ; M_J(MKO)=22.7, M_K=22.2 => adopt (J(MKO)-J(MKO)) = 0.5 [updated 12/5/2020] W1-W2(Y1V) = 4.14 ; Kirkpatrick19 polynomial M_W2(Y1V) = 14.78 (+-0.77; rms) ; Tinney14 # Standard WISE J035000.32-565830.2 = WISE J0350-5658 *Y1: Kirkpatrick12(stan,Leggett16),Schneider15(stan),Kirkpatrick20 Kirkpatrick12: "The plot shown in Figure 6 suggests that the J-band peak of WISE 0350−5658 is sufficiently narrower than WISE 1738+2732 that it should be typed a full subclass later. We therefore propose WISE 0350−5658 to be the tentative Y1 spectral standard, despite its southerly declination, until other Y1 dwarfs are identified." Teffs: 350+-25K(Leggett16), 388+-88K(Kirkpatrick2), logg=4.00+-0.25(Leggett16), plx=176.4+-2.3mas(Kirkpatrick20). Mass=3-9Mjup(Leggett16), Age=0.3-3Gyr(Leggett16). # Examples of Y Dwarfs WISE J035000.32-565830.2 Y1 (Kirkpatrick12, standard in Schnedier15) WISE J053516.80-750024.9 >=Y1: (Kirkpatrick12), Y1 (Leggett15) WISE J064723.23-623235.5 Y1 (Kirkpatrick13) WD 0806-66B (Y?) (Kirkpatrick13), Y1 (Leggett15) WISE J154151.65−225024.9 Y1 (Schneider15) WISE J235402.77+024015.0 Y1 (Schneider15) CWISEP J040235.55-265145.4 [>=Y1] (Kirkpatrick20) WISEPA J041022.71+150248.5 Y0 (Kirkpatrick20)