Title: The Initial Mass Function Based on the Full-sky 20-pc Census of ~3,600 Stars and Brown Dwarfs Authors: Kirkpatrick J.D., Marocco F., Gelino C.R., Raghu Y., Faherty J.K., Bardalez Gagliuffi D.C., Schurr S.D., Apps K., Schneider A.C., Meisner A.M., Kuchner M.J., Caselden D., Smart R.L., Casewell S.L., Raddi R., Kesseli A., Andersen N.S., Antonini E., Beaulieu P., Bickle T.P., Bilsing M., Chieng R., Colin G., Deen S., Dereveanco A., Doll K., Luca H.A.D., Frazer A., Gantier J.M., Gramaize L., Grant K., Hamlet L.K., Higashimura H., Hyogo M., Jalowiczor P.A., Jonkeren A., Kabatnik M., Kiwy F., Martin D.W., Michaels M.N., Pendrill W., Pessanha Machado C., Pumphrey B., Rothermich A., Russwurm R., Sainio A., Sanchez J., Sapelkin-Tambling F.T., Schumann J., Selg-Mann K., Singh H., Stenner A., Sun G., Tanner C., Thevenot M., Ventura M., Voloshin N.V., Walla J., Wedracki Z., Adorno J.I., Aganze C., Allers K.N., Brooks H., Burgasser A.J., Calamari E., Connor T., Costa E., Eisenhardt P.R., Gagne J., Gerasimov R., Gonzales E.C., Hsu C., Kiman R., Li G., Low R., Mamajek E., Pantoja B.M., Popinchalk M., Rees J.M., Stern D., Suarez G., Theissen C., Tsai C.-W., Vos J.M., Zurek D., The Backyard Worlds: Planet 9 Collaboration Table: 20-pc Members of Young Associations and Moving Groups with Ages < 100 Myr ================================================================================ Byte-by-byte Description of file: apjsad24e2t13_mrt.txt -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 34 A34 --- Objects Objects in System 36- 36 A1 --- f_Objects Flag on Objects (1) 38- 46 A9 --- SName Approximate J2000 Coordinates used as a short name throughout text 48- 69 A22 --- SpT Spectral Type (2) 71- 80 A10 --- Group Group Membership 82- 82 A1 --- f_Group Flag on Group (3) 84- 92 A9 --- Likelihood Likelihood (4) -------------------------------------------------------------------------------- Note (1): Flags on Objects as follows: c = On the G_BP_ - G_RP_ vs. M_G_ and G-J vs. M_G_ diagrams of Figure 5, this M4.5 dwarf appears to be ~1.5 mag above the locus of other objects of the same color despite having a Gaia DR3 RUWE value of 1.114. This could alternatively be interpreted as this object's being ~0.5 mag redder than the bulk of objects of similar absolute magnitude. In colors not involving Gaia magnitudes, no discrepancy is seen; this object falls at an M dwarf spectral type where many of these other colors (J-K_s_, J-W2, W1-W2) are degenerate with spectral type over a large range, so such a discrepancy may not be noticeable. Malo et al. (2014b) [ 2014ApJ...788...81M] and Ujjwal et al. (2020) [ 2020AJ....159..166U] identify this as a possible member of the Argus Association, so these discrepancies may be related to a young, active chromosphere. Note (2): References for spectral type are listed in Table 4 along with information on whether the types are based on optical or near-infrared data. Spectral types in brackets are estimates based on the absolute G-band magnitude. Note (3): Flags on Groups as follows: d = Also identified as a member of the 500-Myr old Oceanus Group (Gagne et al.(2023) [2023ApJ...945..119G]); e = The possible {beta} Pic Moving Group association for {alphas} Cir A is listed for both components, as the "high" likelihood Greater Scorpius-Centaurus association for {alpha} Cir B is highly suspect. Note (4): Our Likelihood codes translate to the following codes in the "moca_mtid" column in Table "moca_membership_types" of the MOCA database. Our codes as follows: confirmed = BF (bona fide member); high = HM (high-likelihood candidate member); possible = CM (candidate member); Objects with MOCA codes of LM (low-likelihood candidate member), AM (ambiguous candidate member), and R (rejected candidate member) were ignored. -------------------------------------------------------------------------------- 2MASSW J0045214+163445 0045+1634 L2 {beta} Argus high Ross 15 0159+5831 M4 Carina possible [BHR2005] 832-2 0311+0106 M5.5 {beta} Pic possible LP 944-20 0339-3525 M9 Argus possible BD-21 1074 ABC 0506-2135 M1.5 V e, [M1], [M2.5] {beta} Pic confirmed PSO J076.7092+52.6087 0506+5236 T4.5 Argus possible V2689 Ori, PM J05366+1117 0536+1119 M0.5 V ek, M4 {beta} Pic possible {beta} Pic 0547-5103 A6 V {beta} Pic confirmed AP Col 0604-3433 M4.5 V e Argus confirmed 2MASS J06244595-4521548 0624-4521 L5 Argus high LSPM J0714+3702 0714+3702 M8 Argus possible WISEPA J081958.05-033529.0 0819-0335 T4 {beta} Pic high G 161-71 c 0944-1220 M4.5 V Argus high TWA 22 AB 1017-5354 M5:, M5.5: {beta} Pic confirmed WISE J104915.57-531906.1 AB 1049-5319 L7.5, T0.5: Argus d high SDSS J121951.45+312849.4 1219+3128 L9.5 Argus confirmed G 164-47 1309+2859 M4 V Carina possible {alpha} Cir AB 1442-6458 A7 Vp SrCrEu, K5 V {beta} Pic e possible 2MASS J17534518-6559559 1753-6559 L4 Argus possible WISE J180001.15-155927.2 1800-1559 L4.5 {beta} Pic possible UCAC3 152-281185, UCAC3 152-281176 1845-1409 M5 V e, M5 V e Argus possible HD 182488 AB 1923+3313 G9+ V, T7: Argus confirmed LEHPM 2-1265 AB 2033-4903 [M5 composite] {beta} Pic possible AU Mic, AT Mic AB 2041-3226 M1, M4.5 V, M4 V {beta} Pic confirmed PSO J319.3102-29.6682 2117-2940 T0: {beta} Pic high WISEPC J225540.74-311841.8 2255-3118 T8 {beta} Pic high HD 220140 AB, LP 12-90 2319+7900 K2 V k, M4, M5: V Columba possible G 190-28, G 190-27 2329+4128 M3.5, M4.5 Columba possible LP 704-15, LP 704-14 2357-1258 M3 V, M4 V Argus possible