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 Objects with Low-metallicity and/or Halo Kinematics ================================================================================ Byte-by-byte Description of file: apjsad24e2t14_mrt.txt -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 25 A25 --- Name Name 27- 27 A1 --- f_Name Flag on Name (1) 29- 37 A9 --- SName Approximate J2000 Coordinates used as a short name throughout text 39- 63 A25 --- SpT Spectral Type (2) 65- 71 F7.2 km.s-1 RVel ?="" Radial Velocity 73- 77 F5.2 km.s-1 e_RVel ?="" Uncertainty in RVel 79- 79 A1 --- f_RVel Flag on RVel (3) 81- 81 A1 --- r_RVel Reference for RVel (4) 83- 95 A13 --- KGroup Kinematic Group 97- 97 A1 --- f_KGroup Flag on KGroup (5) -------------------------------------------------------------------------------- Note (1): Flags on individual sources as follows: b = These two objects form a common-proper-motion pair; c = This object does not yet have spectroscopic observations, so its status as a subdwarf is assumed based on its location on color-magnitude diagrams; d = This is the companion to HD 126053, which is typed as a G1.5 V; e = This is the wide companion in the {xi} Ursae Majoris quintuple system, the primary of which is generally typed as M1 V. f = Also known as The Accident, this object does not yet have spectroscopic observations because it is too faint for ground-based spectroscopy. Its status as a subdwarf is assumed based on its highly unusual location on color-magnitude and color-color diagrams. See Kirkpatrick et al. (2021b) [2021ApJ...915L...6K] for details. 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 sometimes encode information about metallicity. For the coldest objects, this is generally done via a prefix such as sd (subdwarf), esd (extreme subdwarf), or usd (ultra subdwarf), with variations such as d/sd (indicating a spectral morphology intermediate between a normal, solar metallicity dwarf and a subdwarf) also possible (figure 11 of Kirkpatrick (2005) [2005ARA&A..43..195K]). For hotter stars, the metallicity is included in one of two ways. A suffix type such as "mF1" for an F4 V star would indicate that the metal lines better match that of an F1 standard, despite the fact that the hydrogen line morphology matches the F4 standard. An alternative way of expressing this is to subtract the metal-line best-match subtype from the H-line best-match subtype and to convert that to a metal index; for example, if the iron lines best matched an F1 dwarf although the hydrogen lines best matched a F9 dwarf ({Delta} = +8 subtypes), the metallicity index for iron would be expressed as Fe = -0.13{Delta} - 0.26, or more compactly as Fe-1.3. See chapter 6 of Gray & Corbally(2009) [2009ssc..book.....G] for more details. Note (3): g = The space motion of the primary in this system is used in lieu of an independent measurement for this object. Note (4): The references for radial velocity are as follows: 1 = Gaia Collaboration et al. (2018) [2018A&A...616A...1G]; 2 = Fouque et al. (2018) [2018MNRAS.475.1960F]; 3 = Gaia Collaboration et al. (2022) [2023A&A...674A...1G]; 4 = Holmberg et al. (2007) [2007A&A...475..519H]; 5 = Pourbaix et al. (2004) [2004A&A...424..727P]; 6 = Maldonado et al. (2010) [2010A&A...521A..12M]; 7 = Abazajian et al. (2009) [2009ApJS..182..543A]; 8 = Gizi s(1997) [1997AJ....113..806G]. Note (5): Flags on Kinematic Groups as follows: h = These objects are flagged by our analysis as belonging to the halo population, but their Gaia DR3 radial velocities are believed to be erroneous. For EGGR 290, the radial velocity measurement is likely incorrect due to the fact that this is a magnetic white dwarf and the fact that the Gaia DR3 radial velocity pipeline lacks white dwarf templates (Bailer-Jones (2022) [2022ApJ...935L...9B]). For UPM J0812-3529, its status as a DC white dwarf (O'Brien et al. (2023) [2023MNRAS.518.3055O]) means that there should not be any lines in the optical spectrum with which Gaia could measure a radial velocity, but this suspicious radial velocity measurement has nonetheless created much discussion regarding the object's possible close (future) fly-by of the Sun (Bobylev & Bajkova (2022) [2022AstL...48..542B], de la Fuente Marcos & de la Fuente Marcos (2022) [2022A&A...668A..14D], Bailer-Jones (2022) [2022ApJ...935L...9B]). For G 188-48 B, the Gaia DR3 radial velocity is assumed to be spurious because the A component has a much more reasonable -- and better measured -- value of 20.06 +/- 0.14 km/s. -------------------------------------------------------------------------------- 85 Peg 0002+2704 G5 V Fe-1 -35.57 0.35 1 thin disk 6 Cet 0011-1528 F8 V Fe-0.8 CH-0.5 14.95 0.13 3 thin disk HD 4391 0045-4733 G5 V Fe-0.8 -10.92 0.12 3 thin disk {mu} Cas 0108+5455 K1 V Fe-2 -97.09 0.25 3 thick disk LP 410-38 0230+1648 sdM6e 49.56 6.65 3 thin disk LP 651-7 0246-0459 M6 V 33.28 2.32 3 halo BD+33 529 0252+3423 (sd)K5 V ([Fe/H]=-0.63) -49.89 0.15 3 thick disk G 174-25 0258+5014 sdM3 -30.24 0.45 3 thin disk LP 994-33 0302-3950 sdM5 - thick disk? Ross 578 0338-1129 d/sdM2 -84.88 0.56 3 halo HD 25329 0403+3516 K3 Vp Fe-1.7 -25.57 0.13 3 halo {zeta} Dor 0505-5728 F9 V Fe-0.5 -1.45 0.12 3 thin disk Kapteyn's Star 0511-4501 sdM1p 245.05 0.13 3 halo EGGR 290 0556+0521 DAP8.7 -414.02 10.41 3 (RV in error) h 2MASS J06453153-6646120 0645-6646 sdL8 - thick disk? YY Gem 0734+3152 M0.5 Ve Fe-2 32.66 2 thin disk 212 Pup 0752-3442 F5 V Fe-0.5 28.03 0.16 3 thin disk HD 65583 0800+2912 K0 V Fe-1.3 14.79 0.12 3 thick disk UPM J0812-3529 0812-3529 DC -373.74 8.18 3 (RV in error) h {alpha} Cha 0818-7655 F5 V Fe-0.8 -12.60 0.12 3 thin disk WISE J083337.83+005214.2 0833+0052 (sd)T9 - thick disk? {psi} Vel 0930-4028 F3 V Fe-0.7 8.80 1.80 4 thin disk L 750-42 0943-1747 sdM3 97.36 0.58 3 thick disk HD 88230 1011+4927 K6e V Fe-1 -26.48 0.12 3 thin disk CWISE J105512.11+544328.3 c 1055+5443 [sdT8] - thick disk? HD 103095 1152+3743 K1 V Fe-1.5 -98.05 0.12 3 halo 10 CVn 1244+3916 F9 V Fe-0.3 80.49 0.12 3 thick disk HD 114837 1314-5906 F6 V Fe-0.4 -63.57 0.12 3 thin disk SDSS J141624.08+134826.7 b 1416+1348 sdL7 -87. 33. 7 thin disk ULAS J141623.94+134836.3 b 1416+1348 (sd)T7.5 -87. 33. g 7 thin disk HD 125276 1419-2548 F9 V Fe-1.5 CH-0.7 -22.28 0.13 3 thin disk WISE J142320.84+011638.0 d 1423+0116 sdT8 -19.21 0.14 g 3 thin disk {sigma} Boo 1434+2944 F4 V kF2 mF1 (metal weak) 0.75 0.12 3 thin disk SSSPM J1444-2019 1444-2019 sdL0 - halo WISEA J153429.75-104303.3 f 1534-1043 [esdT/Y?] - halo {chi} Her 1552+4227 G0 V Fe-0.8... -55.99 0.12 3 thin disk HD 144579 1604+3909 K0 V Fe-1.2 -59.44 0.12 3 thin disk HD 145417 1613-5734 K3 V Fe-1.7 8.68 0.13 3 thick disk b Her 1807+3033 F9 V metal-weak -0.38 0.13 3 thin disk CWISE J181005.77-101001.2 1810-1010 esdT0: - thick disk? {chi} Dra 1821+7243 F7 V (metal-weak) 31.90 0.14 5 thin disk HD 190067 2002+1535 K0 V Fe-0.9 20.37 0.12 3 thin disk WISE J200520.38+542433.9 e 2005+5424 sdT8 -107.6 g 8 thick disk Ross 769 2104-1657 M1 V -10.89 0.27 3 halo {gamma} Pav 2126-6521 F9 V Fe-1.4 CH-0.7 -29.78 0.12 3 thin disk G 188-49 B 2214+2751 -351.15 8.18 3 (RV in error) h 53 Aqr 2226-1644 G1 V + G5 V Fe-0.8 CH-1 2.28 0.15 6 thin disk