# "The Closest F-Type Stars and Their Local Density" # Eric Mamajek 5/16/2016 # # I originally selected all stars from the HIP2 catalog (van Leeuwen # 2007) with parallaxes > 50 mas (d<20pc) and S/N(plx) > 5 with 0.25 < # B-V < 0.65 (bracketing the expected range of A8-G2 dwarfs). I then # cross-IDed the list with Skiff's compendia of MK classifications, # and selected only those which had F spectral types (preferring those # by Gray, Corbally, Garrison, or Morgan, with few exceptions). One # star that appeared to be background star with erroneous parallax due # to binarity was rejected. HIP_93825 is listed twice, with two F-type # components. In the comments below, stars that are post-MS are # clearly marked (where the deviations from the MS in delta(V) mags # are noted). I divide "evolved" from "dwarf" using delta(Mv) < -1 # criterion. # # Of the 84 selected F-type stars within 20 pc: # 80 (95%) could be considered "dwarfs" ("V" lum. class or +-1 mag of MS) # 4 (5%) could be considered "evolved" (>1 mag brighter than MS & lum class <=IV) # # Stellar number densities (with Poisson errors): # All F stars: 0.00251(+-0.00027) pc^-3 (N=84, d<20pc) # Dwarf F stars: 0.00239(+-0.00027) pc^-3 (N=80, d<20pc) # Evolved F stars: 0.00012(+-0.00006) pc^-3 (N=4, d<20pc) # # Compared to overall stellar density (~0.13 pc^-3) and density of M dwarfs (~0.09 pc^-3) # Hence ~1.8% of local stars are F dwarfs, and there are ~38 M dwarfs for every F dwarf! # #HIP# RA Dec DistPc plx[mas] e_plx ID Vmag SpT(adopted) bibcode Class HIP_37279_ 114.827 5.22751 3.514 284.56 1.26 HD_61421 0.40 F5IV-V 1978rmsa.book.....M Dwarf (-0.69 mag) HIP_89937_ 275.260 72.7337 8.057 124.11 0.87 HD_170153 3.57 F7V(mw) 2001AJ....121.2148G Dwarf HIP_22449_ 72.4589 6.96125 8.068 123.94 0.17 HR_1543 3.20 F6V 1973ARA&A..11...29M Dwarf HIP_1599_ 5.00798 -64.8776 8.586 116.46 0.16 HD_1581 4.20 F9.5V 2006AJ....132..161G Dwarf HIP_27072_ 86.1166 -22.4475 8.926 112.02 0.18 HD_38393 3.60 F6.5V 2006AJ....132..161G Dwarf HIP_64394_ 197.971 27.8760 9.129 109.54 0.17 HD_114710 4.30 F9.5V 1989ApJS...71..245K Dwarf HIP_105858_ 321.610 -65.3681 9.261 107.97 0.19 HD_203608 4.20 F9V_Fe-1.4_CH-0.7 2006AJ....132..161G Dwarf HIP_57757_ 177.672 1.76538 10.929 91.50 0.22 HD_102870 3.60 F9V 1973ARA&A..11...29M Dwarf HIP_12777_ 41.0487 49.2287 11.127 89.87 0.22 tet_Per 4.10 F7V 1953ApJ...117..313J Dwarf HIP_78072_ 239.112 15.6647 11.253 88.86 0.18 HD_142860 3.85 F6V 2001AJ....121.2148G Dwarf HIP_23693_ 76.3779 -57.473 11.645 85.87 0.18 HD_33262 4.70 F9V_Fe-0.5 2006AJ....132..161G Dwarf HIP_61941_ 190.417 -1.44952 11.685 85.58 0.60 HD_110379/80 2.80 F2V 2003AJ....126.2048G Dwarf HIP_109176_ 331.752 25.3450 11.726 85.28 0.63 HD_210027 3.76 F5V 2001AJ....121.2148G Dwarf HIP_80686_ 247.116 -70.0847 12.116 82.53 0.52 HD_147584 4.90 F9V 2006AJ....132..161G Dwarf HIP_77952_ 238.787 -63.4297 12.377 80.79 0.16 HD_141891 2.80 F1V 2006AJ....132..161G Dwarf HIP_51459_ 157.657 55.9806 12.779 78.25 0.28 HD_90839 4.90 F8V 2003AJ....126.2048G Dwarf HIP_46853_ 143.218 51.6786 13.478 74.19 0.14 HD_82328 3.20 F5.5IV-V 2003AJ....126.2048G Evolved (-1.12 mag) HIP_7513_ 24.1999 41.4064 13.491 74.12 0.19 HD_9826 4.09 F8V 2001AJ....121.2148G Dwarf HIP_116771_ 354.987 5.62735 13.713 72.92 0.15 HD_222368 4.13 F7V 2001AJ....121.2148G Dwarf HIP_16852_ 54.2188 0.402833 13.962 71.62 0.54 HD_22484 4.30 F9IV-V 1989ApJS...71..245K Dwarf (-0.74 mag) HIP_12843_ 41.2749 -18.5727 14.220 70.32 1.83 HD_17206 4.50 F6V 2006AJ....132..161G Dwarf HIP_14879_ 48.0178 -28.9891 14.236 70.24 0.45 HD_20010 3.90 F6V 2006AJ....132..161G Dwarf HIP_25278_ 81.1055 17.3836 14.386 69.51 0.38 HD_35296 5.00 F8V 2003AJ....126.2048G Dwarf HIP_70497_ 216.300 51.8517 14.530 68.82 0.14 HD_126660 4.05 F7V 2001AJ....121.2148G Dwarf HIP_102485_ 311.524 -25.2705 14.677 68.13 0.27 HD_197692 4.10 F5V 2006AJ....132..161G Dwarf HIP_93017_ 284.256 32.9016 14.872 67.24 0.37 HD_176051 5.22 F9V 2001AJ....121.2148G Dwarf HIP_28103_ 89.1013 -14.168 14.878 67.21 0.25 HD_40136 3.70 F2V 2006AJ....132..161G Dwarf HIP_59199_ 182.103 -24.7288 14.936 66.95 0.15 HD_105452 4.00 F1V 2006AJ....132..161G Dwarf HIP_47592_ 145.561 -23.9162 15.012 66.61 0.21 HD_84117 4.90 F8V 2006AJ....132..161G Dwarf HIP_5862_ 18.7940 -45.5321 15.114 66.16 0.24 HD_7570 5.00 F9V_Fe+0.4 2006AJ....132..161G Dwarf HIP_37853_ 116.397 -34.1766 15.209 65.75 0.51 HD_63077 5.40 F9V 2006AJ....132..161G Dwarf HIP_82860_ 254.006 65.1347 15.257 65.54 0.33 HD_153597 4.90 F8V 2009ApJS..180..117A Dwarf HIP_95501_ 291.374 3.11458 15.525 64.41 1.00 HD_182640 3.36 F1IV-V(n) 2001AJ....121.2148G Dwarf (-0.25 mag) HIP_67275_ 206.817 17.4568 15.617 64.03 0.19 HD_120136 4.50 F7IV-V 2001AJ....121.2148G Dwarf (-0.33 mag) HIP_88745_ 271.757 30.5619 15.642 63.93 0.34 HD_165908 5.04 F9V_mw 2001AJ....121.2148G Dwarf HIP_3909_ 12.5322 -10.6438 15.753 63.48 0.35 HD_4813 5.20 F7V 2003AJ....126.2048G Dwarf HIP_71284_ 218.670 29.7448 15.832 63.16 0.25 HD_128167 4.46 F4VkF2mF1 2001AJ....121.2148G Dwarf HIP_44248_ 135.161 41.7834 16.069 62.23 0.68 HD_76943 4.00 F5IV-V 2003AJ....126.2048G Dwarf (-0.95 mag) HIP_38908_ 119.443 -60.3034 16.204 61.71 0.21 HD_65907 5.60 F9.5V 2006AJ....132..161G Dwarf HIP_50954_ 156.099 -74.0315 16.223 61.64 0.12 HD_90589 4.00 F3V 2006AJ....132..161G Dwarf HIP_112447_ 341.673 12.1741 16.297 61.36 0.19 HD_215648 4.19 F6V 2001AJ....121.2148G Dwarf HIP_32480_ 101.685 43.577 16.716 59.82 0.30 HD_48682 5.20 F9V 2003AJ....126.2048G Dwarf HIP_746_ 2.29204 59.1502 16.784 59.58 0.38 HD_432 2.30 F2III-IV 1978rmsa.book.....M Evolved (-1.86 mag) HIP_35136_ 108.959 47.2404 16.891 59.20 0.33 HD_55575 5.60 F9V 2003AJ....126.2048G Dwarf HIP_12653_ 40.6382 -50.8008 17.167 58.25 0.22 HD_17051 5.40 F9V_Fe+0.3 2006AJ....132..161G Dwarf HIP_93825_ 286.604 -37.0634 17.304 57.79 0.75 HD_177474 4.20 F8V 2006AJ....132..161G Dwarf HIP_93825_ 286.605 -37.0635 17.304 57.79 0.75 HD_177475 5.00 F8V 1984ApJS...55..657C Dwarf HIP_46509_ 142.287 -2.76896 17.334 57.69 2.14 HD_81997 4.60 F5.5IV-V 2001AJ....121.2148G Dwarf (+0.17 mag) HIP_84893_ 260.251 -21.1124 17.355 57.62 0.26 HD_156897 4.40 F2V 2006AJ....132..161G Dwarf HIP_62207_ 191.249 39.2786 17.376 57.55 0.32 HD_110897 6.00 F9V_Fe-0.3 2003AJ....126.2048G Dwarf HIP_7978_ 25.6215 -53.7406 17.433 57.36 0.25 HD_10647 5.50 F9V 2006AJ....132..161G Dwarf HIP_76829_ 235.298 -44.6606 17.436 57.35 0.16 HD_139664 4.60 F4V 2006AJ....132..161G Dwarf HIP_17651_ 56.7125 -23.2484 17.627 56.73 0.19 HD_23754 4.20 F5IV-V 2006AJ....132..161G Dwarf (-0.34 mag) HIP_86736_ 265.858 -21.6831 17.652 56.65 0.24 HD_160915 4.90 F5V 2006AJ....132..161G Dwarf HIP_64241_ 197.498 17.5291 17.825 56.10 0.89 HD_114378/9 4.30 F5.5V 2003AJ....126.2048G Dwarf HIP_75312_ 230.801 30.2882 17.863 55.98 0.78 HD_137107_A 5.58 F9V+ 2001AJ....121.2148G Dwarf HIP_32439_ 101.560 79.5663 17.873 55.95 0.27 HD_46588 5.40 F8V 2003AJ....126.2048G Dwarf HIP_38423_ 118.066 -34.706 17.943 55.73 0.34 HD_64379 5.10 F5V_Fe-0.5 2006AJ....132..161G Dwarf HIP_32362_ 101.323 12.8961 17.998 55.56 0.19 HD_48737 3.30 F5IV-V 2003AJ....126.2048G Evolved (-1.36 mag) HIP_69965_ 214.755 -25.8163 18.034 55.45 0.82 HD_125276 5.90 F9V_Fe-1.5_CH-0.7 2006AJ....132..161G Dwarf HIP_36366_ 112.278 31.7841 18.047 55.41 0.24 HD_58946 4.20 F1V 2003AJ....126.2048G Dwarf HIP_72567_ 222.565 23.9118 18.171 55.03 0.34 HD_130948 5.85 F9IV-V 2001AJ....121.2148G Dwarf (+0.25 mag) HIP_64583_ 198.564 -59.1029 18.198 54.95 0.30 HD_114837 4.90 F6V_Fe-0.4 2006AJ....132..161G Dwarf HIP_71957_ 220.765 -5.65743 18.271 54.73 0.20 HD_129502 3.90 F2V 2006AJ....132..161G Dwarf HIP_109422_ 332.535 -32.5484 18.278 54.71 0.28 HD_210302 4.90 F6V 2006AJ....132..161G Dwarf HIP_61174_ 188.019 -16.1959 18.281 54.70 0.17 HD_109085 4.30 F2V 2006AJ....132..161G Dwarf HIP_96441_ 294.111 50.2205 18.335 54.54 0.15 HD_185395 4.50 F3+V 2003AJ....126.2048G Dwarf HIP_104858_ 318.620 10.0077 18.487 54.09 0.66 HR_8123 4.50 F7(V)+G0(V) 1980ApJS...44..489B Dwarf HIP_35550_ 110.031 21.9823 18.539 53.94 0.66 HD_56986 3.50 F2VkF0mF0 2003AJ....126.2048G Dwarf HIP_4151_ 13.2678 61.1236 18.744 53.35 0.33 HD_5015 4.82 F8V 2001AJ....121.2148G Dwarf HIP_910_ 2.81628 -15.4673 18.747 53.34 0.64 HD_693 4.90 F8V_Fe-0.8_CH-0.5 2006AJ....132..161G Dwarf HIP_46651_ 142.675 -40.4669 18.814 53.15 0.37 HD_82434 3.60 F3V_Fe-0.7 2006AJ....132..161G Dwarf HIP_18859_ 60.6527 -0.268311 18.832 53.10 0.32 HD_25457 5.40 F7V 2003AJ....126.2048G Dwarf HIP_97675_ 297.756 10.4161 19.190 52.11 0.29 HD_187691 5.11 F8V 2001AJ....121.2148G Dwarf HIP_92043_ 281.416 20.5471 19.208 52.06 0.25 HD_173667 4.19 F5.5IV-V 2001AJ....121.2148G Dwarf (-0.92 mag) HIP_29800_ 94.1107 12.2717 19.249 51.95 0.27 HD_43386 5.00 F5V 2003AJ....126.2048G Dwarf HIP_67153_ 206.423 -33.0434 19.402 51.54 0.19 HD_119756 4.20 F2V 2006AJ....132..161G Dwarf HIP_8796_ 28.2704 29.5794 19.417 51.50 0.23 HD_11443 3.40 F6IV 1973ARA&A..11...29M Dwarf HIP_39757_ 121.886 -24.3044 19.481 51.33 0.15 HD_67523 2.80 F5IIkF2IImF5II 2003AJ....126.2048G Evolved (-2.15 mag) HIP_73996_ 226.825 24.8696 19.554 51.14 0.31 HD_134083 4.90 F5V 2003AJ....126.2048G Dwarf HIP_40702_ 124.630 -76.920 19.561 51.12 0.12 HD_71243 4.10 F5V_Fe-0.8 2006AJ....132..161G Dwarf HIP_59072_ 181.720 -64.6136 19.755 50.62 0.12 HD_105211 4.10 F2V 2006AJ....132..161G Dwarf HIP_104440_ 317.340 -73.1723 19.766 50.59 1.52 HD_200525 5.70 F9.5V 2006AJ....132..161G Dwarf HIP_39903_ 122.254 -61.3017 19.980 50.05 2.65 HD_68456 4.70 F6V_Fe-0.8_CH-0.4 2006AJ....132..161G Dwarf