*エリダヌス座エプシロン星

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* タグ &tags() * 名称 - &bold(){エリダヌス座エプシロン星} - &bold(){エリダヌス座イプシロン星} - &bold(){エリダヌス座18番星} - &bold(){epsilon Eridani} - &bold(){eps Eri} - &bold(){18 Eridani} - &bold(){18 Eri} - &bold(){HIP 16537} - &bold(){HD 22049} - &bold(){HR 1084} - &bold(){GJ 144} - &bold(){LHS 1557} - &bold(){BD-09 697} - &bold(){CCDM J03329-0927A} * 位置 - 星座 (con): -- 01:&bold(){エリダヌス座} - 座標 (cor): -- 01:&bold(){03h 32m 55.8442s, -09d 27m 29.744s} &small(){(J2000, SIMBAD < ICRS)} - 固有運動 (pm): -- 01:&bold(){976.36 mas/yr, 17.98 mas/yr} &small(){(SIMBAD)} - 視線速度 (rv): -- 01:&bold(){15.5±0.9 km/s} &small(){(SIMBAD)} - 年周視差 (plx): -- 01:&bold(){310.74±0.85} mas &small(){(SIMBAD)} -- 02:&bold(){309.99±0.79} mas &small(){(RECONS)} - 距離 (dis): -- 01:&bold(){3.218±0.009 pc} &small(){(C:plx01, SIMBAD)} -- 02:&bold(){3.226±0.008 pc} &small(){(C:plx02, RECONS)} -- 06:&bold(){3.22±0.01 pc} &small(){(Butler et al. 2006)} -- 05:&bold(){3.22±0.01 pc} &small(){(Folco et al. 2004)} -- 03:&bold(){10.496±0.029 ly} &small(){(C:plx01, SIMBAD)} -- 04:&bold(){10.522±0.027 ly} &small(){(C:plx02, RECONS)} * 測光 - スペクトル型 (sp): -- 01:&bold(){K2V} &small(){(SIMBAD)} -- 02:&bold(){K2V} &small(){(RECONS)} -- 03:&bold(){K2V} &small(){(van Belle & von Braun 2009)} - 見かけの等級V (v): -- 01:&bold(){3.73} &small(){(SIMBAD)} -- 02:&bold(){3.73} &small(){(RECONS)} -- 03:&bold(){3.73} &small(){(Folco et al. 2004)} -- 04:&bold(){3.72} &small(){(Butler et al. 2006)} - 見かけの等級B (b): -- 01:&bold(){4.61} &small(){(SIMBAD)} -- 02:&bold(){4.60} &small(){(C:v04+bv03, Butler et al. 2006)} - 色指数 B-V (bv): -- 01:&bold(){0.88} &small(){(C:v01+b01, SIMBAD)} -- 02:&bold(){0.88} &small(){(Baliunas et al. 1995)} -- 03:&bold(){0.88} &small(){(Butler et al. 2006)} - 変光星型 (vrt): -- 01:&bold(){BY Dra} &small(){(GCVS)} - 変光範囲 (vrr): - 変光幅 (vra): -- 01:&bold(){0.050} &small(){(GCVS)} - 変光周期 (vrp): * 物理的性質 - 絶対等級 (abs): -- 01:&bold(){6.19} &small(){(SIMBAD)} -- 02:&bold(){6.19} &small(){(RECONS)} - 全波長の光度 (lum): -- 01:&bold(){0.319 -0.021/+0.023 Lsol} &small(){(C:lum03, Folco et al. 2004)} -- 02:&bold(){0.334 Lsol} &small(){(C:lum04, Folco et al. 2004)} -- 03:&bold(){log (L/Lsol) -0.496±0.030} &small(){(Folco et al. 2004)} -- 04:&bold(){log (L/Lsol) -0.476} &small(){(Folco et al. 2004)} - 可視光での明るさ (br): -- 01:&bold(){0.286 Bsol} &small(){(C:abs01, SIMBAD)} -- 02:&bold(){1 / 3.50 Bsol} &small(){(C:abs01, SIMBAD)} - 質量 (mas): -- 01:&bold(){0.85 Msol} &small(){(RECONS)} -- 02:&bold(){0.90±0.10 Msol} &small(){(Folco et al. 2004)} -- 03:&bold(){0.84 Msol} &small(){(Folco et al. 2004)} -- 04:&bold(){0.856 -0.08/+0.06 Msol} &small(){(Takeda et al. 2007)} - 半径 (rad): -- 01:&bold(){0.84 Rsol} &small(){(Johnson & Wright 1983)} -- 02:&bold(){0.743±0.010 Rsol} &small(){(Folco et al. 2004)} -- 03:&bold(){0.735 Rsol} &small(){(Folco et al. 2004)} -- 04:&bold(){0.77 -0.1/+0.2 Rsol} &small(){(Takeda et al. 2007)} -- 05:&bold(){0.82±0.02 Rsol} &small(){(van Belle & von Braun 2009)} - 温度 (tmp): -- 01:&bold(){4810 K} &small(){(Johnson & Wright 1983)} -- 02:&bold(){5135±100 K} &small(){(Folco et al. 2004)} -- 03:&bold(){5122 K} &small(){(Folco et al. 2004)} -- 04:&bold(){5146±44 K} &small(){(Butler et al. 2006)} -- 05:&bold(){4887±50 K} &small(){(van Belle & von Braun 2009)} - 重力 (grv): -- 01:&bold(){log g 4.7±0.2} &small(){(Folco et al. 2004)} -- 02:&bold(){log g 4.63} &small(){(Folco et al. 2004)} -- 05:&bold(){log g 4.574±0.060} &small(){(Butler et al. 2006)} -- 03:&bold(){log g 4.61 -0.02/+} &small(){(Takeda et al. 2007)} -- 04:&bold(){log g 4.52} &small(){(C:mas01+rad01)} - 重元素比 (met): -- 01:&bold(){[Fe/H] -0.07} &small(){(Folco et al. 2004)} -- 02:&bold(){[Fe/H] +0.06} &small(){(Folco et al. 2004)} -- 03:&bold(){[Fe/H] -0.06} &small(){(Folco et al. 2004)} -- 04:&bold(){[Fe/H] -0.031±0.030} &small(){(Butler et al. 2006)} - 自転速度 (rtv): -- 01:&bold(){v sin i 1.7 km/s} &small(){(Folco et al. 2004 < )} -- 02:&bold(){v sin i 2.45±0.5 km/s} &small(){(Butler et al. 2006)} - 自転周期 (rtp): -- 01:&bold(){12 days} &small(){(Baliunas et al. 1995)} - 彩層の活動 (cha): -- 01:&bold(){log R'_HK -4.455} &small(){(Baliunas et al. 1995)} - 年齢 (age): -- 03:&bold(){0.8 Gyr} &small(){(Henry et al. 1996)} -- 04:&bold(){0.73±0.2 Gyr} &small(){(Song et al. 2000)} -- 01:&bold(){0.7±0.2 Gyr} &small(){(Folco et al. 2004)} -- 02:&bold(){0.85 Gyr} &small(){(Folco et al. 2004)} -- 03:&bold(){<0.6 Gyr} &small(){(Takeda et al. 2007)} * 追加データ - E201:見かけの等級J:&bold(){2.228±0.298} &small(){(SIMBAD)} - E202:見かけの等級H:&bold(){1.880±0.276} &small(){(SIMBAD)} - E204:見かけの等級H:&bold(){1.79} &small(){(Folco et al. 2004)} - E203:見かけの等級K:&bold(){1.776±0.286} &small(){(SIMBAD)} - E205:見かけの等級K:&bold(){1.69} &small(){(Folco et al. 2004)} - E206:L_IR/L_star:&bold(){8e-5} &small(){(Folco et al. 2004)}
* タグ &tags() * 名称 - &bold(){エリダヌス座エプシロン星} - &bold(){エリダヌス座イプシロン星} - &bold(){エリダヌス座18番星} - &bold(){epsilon Eridani} - &bold(){eps Eri} - &bold(){18 Eridani} - &bold(){18 Eri} - &bold(){HIP 16537} - &bold(){HD 22049} - &bold(){HR 1084} - &bold(){GJ 144} - &bold(){LHS 1557} - &bold(){BD-09 697} - &bold(){CCDM J03329-0927A} * 位置 - 星座 (con): -- 01:&bold(){エリダヌス座} - 座標 (cor): -- 01:&bold(){03h 32m 55.8442s, -09d 27m 29.744s} &small(){(J2000, SIMBAD < ICRS)} - 固有運動 (pm): -- 01:&bold(){976.36 mas/yr, 17.98 mas/yr} &small(){(SIMBAD)} - 視線速度 (rv): -- 01:&bold(){15.5±0.9 km/s} &small(){(SIMBAD)} - 年周視差 (plx): -- 01:&bold(){310.74±0.85} mas &small(){(SIMBAD)} -- 02:&bold(){309.99±0.79} mas &small(){(RECONS)} - 距離 (dis): -- 01:&bold(){3.218±0.009 pc} &small(){(C:plx01, SIMBAD)} -- 02:&bold(){3.226±0.008 pc} &small(){(C:plx02, RECONS)} -- 06:&bold(){3.22±0.01 pc} &small(){(Butler et al. 2006)} -- 05:&bold(){3.22±0.01 pc} &small(){(Folco et al. 2004)} -- 03:&bold(){10.496±0.029 ly} &small(){(C:plx01, SIMBAD)} -- 04:&bold(){10.522±0.027 ly} &small(){(C:plx02, RECONS)} * 測光 - スペクトル型 (sp): -- 01:&bold(){K2V} &small(){(SIMBAD)} -- 02:&bold(){K2V} &small(){(RECONS)} -- 03:&bold(){K2V} &small(){(van Belle & von Braun 2009)} - 見かけの等級V (v): -- 01:&bold(){3.73} &small(){(SIMBAD)} -- 02:&bold(){3.73} &small(){(RECONS)} -- 03:&bold(){3.73} &small(){(Folco et al. 2004)} -- 04:&bold(){3.72} &small(){(Butler et al. 2006)} - 見かけの等級B (b): -- 01:&bold(){4.61} &small(){(SIMBAD)} -- 02:&bold(){4.60} &small(){(C:v04+bv03, Butler et al. 2006)} - 色指数 B-V (bv): -- 01:&bold(){0.88} &small(){(C:v01+b01, SIMBAD)} -- 02:&bold(){0.88} &small(){(Baliunas et al. 1995)} -- 03:&bold(){0.88} &small(){(Butler et al. 2006)} - 変光星型 (vrt): -- 01:&bold(){BY Dra} &small(){(GCVS)} - 変光範囲 (vrr): - 変光幅 (vra): -- 01:&bold(){0.050} &small(){(GCVS)} - 変光周期 (vrp): * 物理的性質 - 絶対等級 (abs): -- 01:&bold(){6.19} &small(){(SIMBAD)} -- 02:&bold(){6.19} &small(){(RECONS)} - 全波長の光度 (lum): -- 01:&bold(){0.319 -0.021/+0.023 Lsol} &small(){(C:lum03, Folco et al. 2004)} -- 02:&bold(){0.334 Lsol} &small(){(C:lum04, Folco et al. 2004)} -- 03:&bold(){log (L/Lsol) -0.496±0.030} &small(){(Folco et al. 2004)} -- 04:&bold(){log (L/Lsol) -0.476} &small(){(Folco et al. 2004)} - 可視光での明るさ (br): -- 01:&bold(){0.286 Bsol} &small(){(C:abs01, SIMBAD)} -- 02:&bold(){1 / 3.50 Bsol} &small(){(C:abs01, SIMBAD)} - 質量 (mas): -- 01:&bold(){0.85 Msol} &small(){(RECONS)} -- 02:&bold(){0.90±0.10 Msol} &small(){(Folco et al. 2004)} -- 03:&bold(){0.84 Msol} &small(){(Folco et al. 2004)} -- 04:&bold(){0.856 -0.08/+0.06 Msol} &small(){(Takeda et al. 2007)} - 半径 (rad): -- 01:&bold(){0.84 Rsol} &small(){(Johnson & Wright 1983)} -- 02:&bold(){0.743±0.010 Rsol} &small(){(Folco et al. 2004)} -- 03:&bold(){0.735 Rsol} &small(){(Folco et al. 2004)} -- 04:&bold(){0.77 -0.1/+0.2 Rsol} &small(){(Takeda et al. 2007)} -- 05:&bold(){0.82±0.02 Rsol} &small(){(van Belle & von Braun 2009)} - 温度 (tmp): -- 01:&bold(){4810 K} &small(){(Johnson & Wright 1983)} -- 02:&bold(){5135±100 K} &small(){(Folco et al. 2004)} -- 03:&bold(){5122 K} &small(){(Folco et al. 2004)} -- 04:&bold(){5146±44 K} &small(){(Butler et al. 2006)} -- 00:&bold(){5200 K} &small(){(Luck & Heiter 2006)} -- 05:&bold(){4887±50 K} &small(){(van Belle & von Braun 2009)} - 重力 (grv): -- 01:&bold(){log g 4.7±0.2} &small(){(Folco et al. 2004)} -- 02:&bold(){log g 4.63} &small(){(Folco et al. 2004)} -- 05:&bold(){log g 4.574±0.060} &small(){(Butler et al. 2006)} -- 00:&bold(){log g 4.50} &small(){(Luck & Heiter 2006)} -- 03:&bold(){log g 4.61 -0.02/+} &small(){(Takeda et al. 2007)} -- 04:&bold(){log g 4.52} &small(){(C:mas01+rad01)} - 重元素比 (met): -- 01:&bold(){[Fe/H] -0.07} &small(){(Folco et al. 2004)} -- 02:&bold(){[Fe/H] +0.06} &small(){(Folco et al. 2004)} -- 03:&bold(){[Fe/H] -0.06} &small(){(Folco et al. 2004)} -- 04:&bold(){[Fe/H] -0.031±0.030} &small(){(Butler et al. 2006)} -- 00:&bold(){[Fe/H] -0.04} &small(){(Luck & Heiter 2006)} - 自転速度 (rtv): -- 01:&bold(){v sin i 1.7 km/s} &small(){(Folco et al. 2004 < )} -- 02:&bold(){v sin i 2.45±0.5 km/s} &small(){(Butler et al. 2006)} - 自転周期 (rtp): -- 01:&bold(){12 days} &small(){(Baliunas et al. 1995)} - 彩層の活動 (cha): -- 01:&bold(){log R'_HK -4.455} &small(){(Baliunas et al. 1995)} - 年齢 (age): -- 03:&bold(){0.8 Gyr} &small(){(Henry et al. 1996)} -- 04:&bold(){0.73±0.2 Gyr} &small(){(Song et al. 2000)} -- 01:&bold(){0.7±0.2 Gyr} &small(){(Folco et al. 2004)} -- 02:&bold(){0.85 Gyr} &small(){(Folco et al. 2004)} -- 03:&bold(){<0.6 Gyr} &small(){(Takeda et al. 2007)} * 追加情報 - E201:見かけの等級J:&bold(){2.228±0.298} &small(){(SIMBAD)} - E202:見かけの等級H:&bold(){1.880±0.276} &small(){(SIMBAD)} - E204:見かけの等級H:&bold(){1.79} &small(){(Folco et al. 2004)} - E203:見かけの等級K:&bold(){1.776±0.286} &small(){(SIMBAD)} - E205:見かけの等級K:&bold(){1.69} &small(){(Folco et al. 2004)} - E206:L_IR/L_star:&bold(){8e-5} &small(){(Folco et al. 2004)} - E300:重元素比[Fe/H]:&bold(){-0.04} &small(){(Luck & Heiter 2006)} - E300:重元素比[C/H]:&bold(){-0.02} &small(){(Luck & Heiter 2006)} - E300:重元素比[O/H]:&bold(){0.00} &small(){(Luck & Heiter 2006)} - E300:リチウム:&bold(){0.55} &small(){(Luck & Heiter 2006)} - E300:微視的乱流:&bold(){0.70 km/s} &small(){(Luck & Heiter 2006)} - E300:巨視的乱流:&bold(){2.00 km/s} &small(){(Luck & Heiter 2006)}

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