*くじら座タウ星

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* タグ &tags() * 名称 - &bold(){くじら座タウ星} - &bold(){くじら座52番星} - &bold(){tau Ceti} - &bold(){tau Cet} - &bold(){52 Ceti} - &bold(){52 Cet} - &bold(){HIP 8102} - &bold(){HD 10700} - &bold(){HR 509} - &bold(){GJ 71} - &bold(){LHS 146} - &bold(){BD-16 295} * 位置 - 星座 (con): -- 01:&bold(){くじら座} - 座標 (cor): -- 01:&bold(){01h 44m 04.0829s, -15d 56m 14.928s} &small(){(J2000, SIMBAD < ICRS)} - 固有運動 (pm): -- 01:&bold(){-1721.94 mas/yr, 854.17 mas/yr} &small(){(SIMBAD)} - 視線速度 (rv): -- 01:&bold(){-16.4 km/s} &small(){(SIMBAD)} - 年周視差 (plx): -- 01:&bold(){274.18±0.80 mas} &small(){(SIMBAD)} -- 02:&bold(){274.39±0.76 mas} &small(){(RECONS)} -- 03:&bold(){273.96±0.170 mas} &small(){(van Leeuwen 2007)} - 距離 (dis): -- 01:&bold(){3.647±0.010 pc} &small(){(C:plx01, SIMBAD)} -- 02:&bold(){3.644±0.010 pc} &small(){(C:plx02, RECONS)} -- 05:&bold(){3.65±0.01 pc} &small(){(Folco et al. 2004 < Cat-HIP)} -- 06:&bold(){3.6502±0.0023 pc} &small(){(C:plx03, van Leeuwen 2007)} -- 03:&bold(){11.90±0.03 ly} &small(){(C:plx01, SIMBAD)} -- 04:&bold(){11.89±0.03 ly} &small(){(C:plx02, RECONS)} -- 07:&bold(){11.906±0.007 ly} &small(){(C:plx03, van Leeuwen 2007)} * 測光 - スペクトル型 (sp): -- 01:&bold(){G8V} &small(){(SIMBAD)} -- 02:&bold(){G8V} &small(){(Folco et al. 2004)} -- 03:&bold(){G8V} &small(){(Teixeira et al. 2009)} - 見かけの等級 V (v): -- 01:&bold(){3.50} &small(){(SIMBAD)} -- 02:&bold(){3.49} &small(){(Folco et al. 2004)} -- 03:&bold(){3.50±0.01} &small(){(Teixeira et al. 2009)} - 見かけの等級B: -- 01:&bold(){4.22} &small(){(SIMBAD)} - 色指数 (bv): -- 01:&bold(){0.72} &small(){(C:v01+b01, SIMBAD)} -- 02:&bold(){0.72} &small(){(Baliunas et al. 1995)} - 変光星型 (vrt): * 物理的性質 - 絶対等級 (abs): -- 01:&bold(){5.69} &small(){(C:plx01+v01, SIMBAD)} -- 02:&bold(){5.68} &small(){(RECONS)} -- 03:&bold(){5.69±0.01} &small(){(Teixeira et al. 2009)} - 全波長での光度 (lum): -- 01:&bold(){0.506 Lsol} &small(){(C:lum02, Folco et al. 2004)} -- 04:&bold(){0.520±0.30 Lsol} &small(){(C:lum03, Pijpers et al. 2003)} -- 05:&bold(){0.488±0.010 Lsol} &small(){(Teixeira et al. 2009)} -- 03:&bold(){log L/Lsol -0.284 -0.026/+0.024} &small(){(Pijpers et al. 2003)} -- 02:&bold(){log L/Lsol -0.296} &small(){(Folco et al. 2004)} - 可視光での明るさ (br): -- 01:&bold(){0.453 Bsol} &small(){(C:abs01, SIMBAD)} -- 02:&bold(){0.457 Bsol} &small(){(C:abs02, RECONS)} -- 03:&bold(){1 / 2.21 Bsol} &small(){(C:abs01, SIMBAD)} -- 04:&bold(){1 / 2.19 Bsol} &small(){(C:abs02, RECONS)} - 質量 (mas): -- 01:&bold(){0.91 Msol} &small(){(RECONS)} -- 02:&bold(){0.85±0.15 Msol} &small(){(Folco et al. 2004)} -- 03:&bold(){0.83 Msol} &small(){(Folco et al. 2004)} -- 04:&bold(){0.799 -0.012/+0.015 Msol} &small(){(Takeda et al. 2007)} - 半径 (rad): -- 01:&bold(){0.87 Rsol} &small(){(Johnson & Wright 1983)} -- 02:&bold(){0.816±0.013 Rsol} &small(){(Folco et al. 2004)} -- 03:&bold(){0.821 Rsol} &small(){(Folco et al. 2004)} -- 04:&bold(){0.83±0.02 Rsol} &small(){(Takeda et al. 2007)} -- 05:&bold(){0.783±0.012 Rsol} &small(){(Teixeira et al. 2009)} - 温度 (tmp): -- 01:&bold(){5098 K} &small(){(Johnson & Wright 1983)} -- 02:&bold(){5300 K} &small(){(Morell et al. 1992)} -- 03:&bold(){5300±100 K} &small(){(Soubiran et al. 1998)} -- 04:&bold(){5250 K} &small(){(Thevenis 1998)} -- 05:&bold(){5264±100 K} &small(){(Folco et al. 2004)} -- 06:&bold(){5377 K} &small(){(Folco et al. 2004)} -- 07:&bold(){5550 K} &small(){(Folco et al. 2004, if met=-0.5)} - 重力 (grv): -- 01:&bold(){log g 4.4} &small(){(Morell et al. 1992)} -- 02:&bold(){log g 4.5±0.2} &small(){(Folco et al. 2004)} -- 03:&bold(){log g 4.53} &small(){(Folco et al. 2004)} -- 04:&bold(){log g 4.52 -0.01/+0.02} &small(){(Takeda et al. 2007)} - 重元素比 (met): -- 01:&bold(){[Fe/H] -0.5} &small(){(Morell et al. 1992)} -- 02:&bold(){[Fe/H] -0.5} &small(){(Soubiran et al. 1998)} -- 03:&bold(){[Fe/H] -0.42} &small(){(Thevenin 1998)} -- 04:&bold(){[Fe/H] -0.5} &small(){(Folco et al. 2004)} -- 05:&bold(){[Fe/H] -0.31} &small(){(Folco et al. 2004)} -- 06:&bold(){32%} &small(){(C:met01, Morell et al. 1992)} -- 07:&bold(){38&} &small(){(C:met03, Thevenin 1998)} -- 08:&bold(){49%} &small(){(C:met05, Folco et al. 2004)} - 自転速度 (rtv): -- 01:&bold(){v sin i 0.4 km/s} &small(){(Folco et al. 2004 <)} - 自転周期 (rtp): -- 01:&bold(){34 days} &small(){(Baliunas et al. 1995)} - 彩層の活動 (cha): -- 01:&bold(){log R'_HK -4.958} &small(){(Baliunas et al. 1995)} - 年齢 (age): -- 01:&bold(){9 Gyr} &small(){(Morell et al. 1992)} -- 02:&bold(){4.4-12 Gyr} &small(){(Lachaume et al. 1999)} -- 03:&bold(){10 Gyr} &small(){(Folco et al. 2004)} -- 04:&bold(){~10.4 Gyr} &small(){(Folco et al. 2004, if met=-0.5)} -- 05:&bold(){>12.12 Gyr} &small(){(Takeda et al. 2007)} * 追加データ - E201:見かけの等級J:&bold(){2.149±0.310} &small(){(SIMBAD)} - E202:見かけの等級H:&bold(){1.800±0.234} &small(){(SIMBAD)} - E204:見かけの等級H:&bold(){1.73} &small(){(Folco et al. 2004)} - E203:見かけの等級K:&bold(){1.794±0.274} &small(){(SIMBAD)} - E205:見かけの等級K:&bold(){1.66} &small(){(Folco et al. 2004)} - E206:L_IR/L_star:&bold(){1.2e-5} &small(){(Folco et al. 2004)} - E207:輻射補正:&bold(){-0.17±0.02} &small(){(Casagrande et al. 2006)} - E301:平均密度:&bold(){2.21±0.01 g/cm^3} &small(){(Teixeira et al. 2009)}
* タグ &tags() * 名称 - &bold(){くじら座タウ星} - &bold(){くじら座52番星} - &bold(){tau Ceti} - &bold(){tau Cet} - &bold(){52 Ceti} - &bold(){52 Cet} - &bold(){HIP 8102} - &bold(){HD 10700} - &bold(){HR 509} - &bold(){GJ 71} - &bold(){LHS 146} - &bold(){BD-16 295} * 位置 - 星座 (con): -- 01:&bold(){くじら座} - 座標 (cor): -- 01:&bold(){01h 44m 04.0829s, -15d 56m 14.928s} &small(){(J2000, SIMBAD < ICRS)} - 固有運動 (pm): -- 01:&bold(){-1721.94 mas/yr, 854.17 mas/yr} &small(){(SIMBAD)} - 視線速度 (rv): -- 01:&bold(){-16.4 km/s} &small(){(SIMBAD)} - 年周視差 (plx): -- 01:&bold(){274.18±0.80 mas} &small(){(SIMBAD)} -- 02:&bold(){274.39±0.76 mas} &small(){(RECONS)} -- 03:&bold(){273.96±0.170 mas} &small(){(van Leeuwen 2007)} - 距離 (dis): -- 01:&bold(){3.647±0.010 pc} &small(){(C:plx01, SIMBAD)} -- 02:&bold(){3.644±0.010 pc} &small(){(C:plx02, RECONS)} -- 05:&bold(){3.65±0.01 pc} &small(){(Folco et al. 2004 < Cat-HIP)} -- 06:&bold(){3.6502±0.0023 pc} &small(){(C:plx03, van Leeuwen 2007)} -- 03:&bold(){11.90±0.03 ly} &small(){(C:plx01, SIMBAD)} -- 04:&bold(){11.89±0.03 ly} &small(){(C:plx02, RECONS)} -- 07:&bold(){11.906±0.007 ly} &small(){(C:plx03, van Leeuwen 2007)} * 測光 - スペクトル型 (sp): -- 01:&bold(){G8V} &small(){(SIMBAD)} -- 02:&bold(){G8V} &small(){(Folco et al. 2004)} -- 03:&bold(){G8V} &small(){(Teixeira et al. 2009)} - 見かけの等級 V (v): -- 01:&bold(){3.50} &small(){(SIMBAD)} -- 02:&bold(){3.49} &small(){(Folco et al. 2004)} -- 03:&bold(){3.50±0.01} &small(){(Teixeira et al. 2009)} - 見かけの等級B: -- 01:&bold(){4.22} &small(){(SIMBAD)} - 色指数 (bv): -- 01:&bold(){0.72} &small(){(C:v01+b01, SIMBAD)} -- 02:&bold(){0.72} &small(){(Baliunas et al. 1996)} - 変光星型 (vrt): * 物理的性質 - 絶対等級 (abs): -- 01:&bold(){5.69} &small(){(C:plx01+v01, SIMBAD)} -- 02:&bold(){5.68} &small(){(RECONS)} -- 03:&bold(){5.69±0.01} &small(){(Teixeira et al. 2009)} - 全波長での光度 (lum): -- 01:&bold(){0.506 Lsol} &small(){(C:lum02, Folco et al. 2004)} -- 04:&bold(){0.520±0.30 Lsol} &small(){(C:lum03, Pijpers et al. 2003)} -- 05:&bold(){0.488±0.010 Lsol} &small(){(Teixeira et al. 2009)} -- 03:&bold(){log L/Lsol -0.284 -0.026/+0.024} &small(){(Pijpers et al. 2003)} -- 02:&bold(){log L/Lsol -0.296} &small(){(Folco et al. 2004)} - 可視光での明るさ (br): -- 01:&bold(){0.453 Bsol} &small(){(C:abs01, SIMBAD)} -- 02:&bold(){0.457 Bsol} &small(){(C:abs02, RECONS)} -- 03:&bold(){1 / 2.21 Bsol} &small(){(C:abs01, SIMBAD)} -- 04:&bold(){1 / 2.19 Bsol} &small(){(C:abs02, RECONS)} - 質量 (mas): -- 01:&bold(){0.91 Msol} &small(){(RECONS)} -- 02:&bold(){0.85±0.15 Msol} &small(){(Folco et al. 2004)} -- 03:&bold(){0.83 Msol} &small(){(Folco et al. 2004)} -- 04:&bold(){0.799 -0.012/+0.015 Msol} &small(){(Takeda et al. 2007)} - 半径 (rad): -- 01:&bold(){0.87 Rsol} &small(){(Johnson & Wright 1983)} -- 02:&bold(){0.816±0.013 Rsol} &small(){(Folco et al. 2004)} -- 03:&bold(){0.821 Rsol} &small(){(Folco et al. 2004)} -- 04:&bold(){0.83±0.02 Rsol} &small(){(Takeda et al. 2007)} -- 05:&bold(){0.783±0.012 Rsol} &small(){(Teixeira et al. 2009)} - 温度 (tmp): -- 01:&bold(){5098 K} &small(){(Johnson & Wright 1983)} -- 02:&bold(){5300 K} &small(){(Morell et al. 1992)} -- 03:&bold(){5300±100 K} &small(){(Soubiran et al. 1998)} -- 04:&bold(){5250 K} &small(){(Thevenis 1998)} -- 05:&bold(){5264±100 K} &small(){(Folco et al. 2004)} -- 06:&bold(){5377 K} &small(){(Folco et al. 2004)} -- 07:&bold(){5550 K} &small(){(Folco et al. 2004, if met=-0.5)} -- 00:&bold(){5350 K} &small(){(Luck & Heiter 2006)} - 重力 (grv): -- 01:&bold(){log g 4.4} &small(){(Morell et al. 1992)} -- 02:&bold(){log g 4.5±0.2} &small(){(Folco et al. 2004)} -- 03:&bold(){log g 4.53} &small(){(Folco et al. 2004)} -- 00:&bold(){log g 4.50} &small(){(Luck & Heiter 2006)} -- 04:&bold(){log g 4.52 -0.01/+0.02} &small(){(Takeda et al. 2007)} - 重元素比 (met): -- 00:&bold(){[Fe/H] -0.5} &small(){(Morell et al. 1992)} -- 00:&bold(){[Fe/H] -0.5} &small(){(Soubiran et al. 1998)} -- 00:&bold(){[Fe/H] -0.42} &small(){(Thevenin 1998)} -- 00:&bold(){[Fe/H] -0.5} &small(){(Folco et al. 2004)} -- 00:&bold(){[Fe/H] -0.31} &small(){(Folco et al. 2004)} -- 00:&bold(){[Fe/H] -0.58} &small(){(Luck & Heiter 2006)} - 自転速度 (rtv): -- 01:&bold(){v sin i 0.4 km/s} &small(){(Folco et al. 2004 <)} - 自転周期 (rtp): -- 01:&bold(){34 days} &small(){(Baliunas et al. 1996)} - 彩層の活動 (cha): -- 01:&bold(){log R'_HK -4.958} &small(){(Baliunas et al. 1996)} - 年齢 (age): -- 01:&bold(){9 Gyr} &small(){(Morell et al. 1992)} -- 02:&bold(){4.4-12 Gyr} &small(){(Lachaume et al. 1999)} -- 03:&bold(){10 Gyr} &small(){(Folco et al. 2004)} -- 04:&bold(){~10.4 Gyr} &small(){(Folco et al. 2004, if met=-0.5)} -- 05:&bold(){>12.12 Gyr} &small(){(Takeda et al. 2007)} * 追加情報 - E201:見かけの等級J:&bold(){2.149±0.310} &small(){(SIMBAD)} - E202:見かけの等級H:&bold(){1.800±0.234} &small(){(SIMBAD)} - E204:見かけの等級H:&bold(){1.73} &small(){(Folco et al. 2004)} - E203:見かけの等級K:&bold(){1.794±0.274} &small(){(SIMBAD)} - E205:見かけの等級K:&bold(){1.66} &small(){(Folco et al. 2004)} - E206:L_IR/L_star:&bold(){1.2e-5} &small(){(Folco et al. 2004)} - E207:輻射補正:&bold(){-0.17±0.02} &small(){(Casagrande et al. 2006)} - E301:平均密度:&bold(){2.21±0.01 g/cm^3} &small(){(Teixeira et al. 2009)} - E300:重元素比[Fe/H]:&bold(){-0.58} &small(){(Luck & Heiter 2006)} - E300:重元素比[C/H]:&bold(){-0.49±0.14} &small(){(Luck & Heiter 2006)} - E300:重元素比[O/H]:&bold(){-0.36±0.14} &small(){(Luck & Heiter 2006)} - E300:リチウム:&bold(){-0.11} &small(){(Luck & Heiter 2006)} - E300:微視的乱流:&bold(){0.50 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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