A
スペクトル分類

A
Effective temperature
7,500–10,000 K
太陽半径
1.4–1.8 R☉
太陽質量
1.4–2.1 M☉

A型主系列星（Aがたしゅけいれっせい）は、スペクトル型がA、光度階級がVの、水素を燃やして燃える主系列星である。スペクトル中の強い水素の吸収線によって区別される。太陽の1.4倍から2.1倍の質量を持ち、表面温度は7600Kから10000Kの間である。 主系列星全体のうち、A型主系列星が占める割合は0.5%に過ぎないと考えられている。アルタイル、シリウスA、ベガ等がこの型に分類される。

Uses material from the Wikipedia article "A型主系列星", which is released under the Creative Commons BY-SA 3.0.
天体 距離ウィキ
11 Virginis恒星, Infra-Red source, High proper-motion Star, UV-emission sourceA144[x]
50 Cassiopeiae恒星, Infra-Red source, UV-emission sourceA157[x]
Acamar恒星, Double or multiple star, Star in double systemA161[x]
Alderamin恒星, Double or multiple star, Infra-Red source, High proper-motion Star, UV-emission source, Variable StarA49[x]
Algorab恒星, Double or multiple star, Infra-Red source, High proper-motion Star, UV-emission source, Variable StarA87[x]
Alhena恒星, Double or multiple star, Star in double system, Infra-Red source, 連星, UV-emission source, X-ray sourceA109[x]
Alioth恒星, Double or multiple star, Variable Star of alpha2 CVn type, Infra-Red source, UV-emission source, Variable StarA82[x]
Alpha Circini恒星, Double or multiple star, Variable Star of alpha2 CVn type, Infra-Red source, High proper-motion Star, UV-emission source, Variable StarA54[x]
Alpha Cygni恒星, Double or multiple star, Emission-line Star, Infra-Red source, Pulsating variable Star, 超巨星, UV-emission source, Variable StarA1412[x]
Alpha Pictoris恒星, Infra-Red source, High proper-motion Star, UV-emission source, X-ray sourceA96[x]
Altair恒星, Double or multiple star, Variable Star of delta Sct type, Infra-Red source, High proper-motion Star, UV-emission source, Variable Star, X-ray sourceA17[x]
Ascella恒星, Double or multiple star, Infra-Red source, UV-emission sourceA88[x]
Beta Horologii恒星, Infra-Red source, UV-emission sourceA294[x]
Beta Pavonis恒星, Infra-Red source, UV-emission sourceA135[x]
Beta Pictoris恒星, Infra-Red source, sub-millimetric source, UV-emission sourceA64[x]
Canopus恒星, Infra-Red source, UV-emission source, X-ray sourceA309[x]
Castor恒星, Double or multiple star, Infra-Red source, High proper-motion Star, UV-emission source, Variable Star, X-ray sourceA51[x]
CD-39 6137恒星, 銀河, Infra-Red source, 惑星状星雲, Radio-sourceA2100[x]
Chertan恒星, Infra-Red source, UV-emission source, Variable StarA165[x]
Cor Caroli恒星, Double or multiple star, Variable Star of alpha2 CVn type, Blue object, Infra-Red source, 特異星, High proper-motion Star, Variable Star, X-ray sourceA115[x]
Denebola恒星, Double or multiple star, Variable Star of delta Sct type, Infra-Red source, High proper-motion Star, UV-emission source, Variable StarA36[x]
Epsilon Gruis恒星, Infra-Red source, 連星, UV-emission source, X-ray sourceA129[x]
Eta Telescopii恒星, Double or multiple star, Infra-Red source, UV-emission sourceA157[x]
Fomalhaut恒星, Double or multiple star, Infra-Red source, High proper-motion Star, sub-millimetric source, UV-emission source, Variable StarA25[x]
Gamma Centauri恒星, Double or multiple star, Infra-Red source, High proper-motion Star, UV-emission sourceA131[x]
Gorgonea Secunda恒星, Infra-Red source, High proper-motion Star, UV-emission sourceA309[x]
GY Andromedae恒星, Variable Star of alpha2 CVn type, Infra-Red source, 連星, UV-emission source, Variable StarA523[x]
Heze恒星, Double or multiple star, Infra-Red source, High proper-motion Star, UV-emission sourceA74[x]
Kaffaljidhma恒星, Double or multiple star, Infra-Red source, UV-emission source, X-ray sourceA80[x]
Lalande 28607恒星, Infra-Red source, High proper-motion Star, UV-emission source, Variable StarA190[x]
Megrez恒星, Double or multiple star, Infra-Red source, UV-emission source, Variable StarA81[x]
Miaplacidus恒星, Infra-Red source, High proper-motion Star, UV-emission sourceA113[x]
Rasalhague恒星, Double or multiple star, Infra-Red source, High proper-motion Star, UV-emission source, Variable Star, X-ray sourceA47[x]
Sabik恒星, Double or multiple star, Infra-Red source, UV-emission sourceA88[x]
Sarin恒星, Double or multiple star, Infra-Red source, High proper-motion Star, UV-emission source, Variable StarA75[x]
Seginus恒星, Double or multiple star, Variable Star of delta Sct type, Infra-Red source, High proper-motion Star, UV-emission source, Variable StarA87[x]
Sirius恒星, Double or multiple star, Infra-Red source, High proper-motion Star, UV-emission source, Variable StarA9[x]
Tania Borealis恒星, Infra-Red source, High proper-motion Star, UV-emission sourceA138[x]
Upsilon Carinae恒星, Double or multiple starA1437[x]
Vega恒星, Double or multiple star, Variable Star of delta Sct type, Infra-Red source, High proper-motion Star, sub-millimetric source, UV-emission source, Variable Star, X-ray sourceA25[x]
Yildun恒星, Double or multiple star, Infra-Red source, UV-emission sourceA172[x]
Zeta Aquilae恒星, Double or multiple star, Infra-Red source, UV-emission sourceA83[x]
Zosma恒星, Double or multiple star, Infra-Red source, High proper-motion Star, UV-emission source, Variable StarA59[x]
10 Comae Berenices恒星, Star in Cluster, Infra-Red source, UV-emission sourceA351
10 Hydrae恒星, Infra-Red source, UV-emission sourceA210
10 Serpentis恒星, Infra-Red source, UV-emission sourceA130
101 Aquarii恒星, Double or multiple star, Infra-Red source, UV-emission sourceA294
101 Herculis恒星, Infra-Red source, UV-emission sourceA329
108 Herculis恒星, Infra-Red source, 連星, UV-emission sourceA183
109 Virginis恒星, Infra-Red source, UV-emission source, Variable Star, X-ray sourceA134
11 Bootis恒星, Infra-Red source, UV-emission sourceA296
11 Orionis恒星, Variable Star of alpha2 CVn type, Infra-Red source, UV-emission source, Variable StarA365
11 Tauri恒星, Infra-Red source, 連星, UV-emission sourceA478
110 Tauri恒星, Infra-Red source, UV-emission sourceA407
111 Herculis恒星, Double or multiple star, Infra-Red source, UV-emission sourceA94
12 Sextantis恒星, Infra-Red source, UV-emission source, Variable StarA195
13 Delphini恒星, Double or multiple star, Infra-Red source, UV-emission source, Variable StarA429
14 Camelopardalis恒星, Infra-Red source, UV-emission sourceA259
14 Pegasi恒星, Infra-Red source, 連星, UV-emission sourceA275
14 Piscium恒星, Infra-Red source, UV-emission sourceA212
15 Andromedae恒星, Variable Star of delta Sct type, Infra-Red source, UV-emission source, Variable StarA262
16 Camelopardalis恒星, Double or multiple star, Infra-Red source, UV-emission sourceA337
16 Lyrae恒星, Double or multiple star, Infra-Red source, UV-emission source, Variable StarA123
17 Capricorni恒星, Infra-Red source, UV-emission sourceA264
18 Orionis恒星, Infra-Red source, UV-emission sourceA443
18 Vulpeculae恒星, Star in Cluster, Variable Star of delta Sct type, Infra-Red source, 連星, UV-emission sourceA423
19 Geminorum恒星, Infra-Red sourceA440
2 Lyncis恒星, 連星, Infra-Red source, UV-emission source, Variable StarA157
21 Leonis Minoris恒星, Variable Star of delta Sct type, Infra-Red source, UV-emission source, Variable StarA92
21 Piscium恒星, Infra-Red source, UV-emission sourceA304
21 Vulpeculae恒星, Variable Star of delta Sct type, Infra-Red source, UV-emission source, Variable StarA297
24 Canum Venaticorum恒星, Infra-Red source, High proper-motion Star, UV-emission source, Variable StarA181
26 Arietis恒星, Variable Star of delta Sct type, Infra-Red source, UV-emission source, Variable StarA216
27 Virginis恒星, Double or multiple star, Variable Star of delta Sct type, Infra-Red source, UV-emission source, Variable StarA205
28 Andromedae恒星, Double or multiple star, Variable Star of delta Sct type, Infra-Red source, UV-emission source, Variable StarA205
28 Cephei恒星, Double or multiple star, Infra-Red source, UV-emission source, X-ray sourceA206
2MASS J03290575+3116396銀河, Infra-Red source, Radio-source, X-ray source, 若い星状天体A1217
30 Comae Berenices恒星, Double or multiple star, Infra-Red source, UV-emission sourceA303
30 Draconis恒星, Double or multiple star, Infra-Red source, High proper-motion Star, UV-emission source, X-ray sourceA217
31 Cassiopeiae恒星, Double or multiple star, Infra-Red source, UV-emission sourceA277
31 Piscium恒星, Infra-Red source, UV-emission sourceA401
33 Bootis恒星, Infra-Red source, UV-emission source, X-ray sourceA186
35 Cassiopeiae恒星, Double or multiple star, Infra-Red source, UV-emission source, Variable StarA255
36 Cygni恒星, Infra-Red source, UV-emission sourceA203
38 Arietis恒星, Variable Star of delta Sct type, Infra-Red source, High proper-motion Star, UV-emission source, Variable StarA119
38 Lyncis恒星, Double or multiple star, Infra-Red source, UV-emission source, X-ray sourceA124
4 Camelopardalis恒星, Double or multiple star, Infra-Red source, High proper-motion Star, UV-emission sourceA172
4 Cephei恒星, Star in Cluster, Infra-Red source, UV-emission sourceA140
4 Eridani恒星, Infra-Red source, UV-emission sourceA156
4 Sagittarii恒星, Infra-Red source, UV-emission sourceA416
4 Serpentis恒星, Infra-Red source, UV-emission sourceA151
40 Cygni恒星, Infra-Red source, UV-emission sourceA265
40 Leonis Minoris恒星, Double or multiple star, Infra-Red source, UV-emission sourceA149
41 Tauri恒星, Variable Star of alpha2 CVn type, Infra-Red source, 連星, UV-emission source, Variable StarA420
41 Virginis恒星, Infra-Red source, UV-emission sourceA199
45 Capricorni恒星, Double or multiple star, Infra-Red source, UV-emission sourceA173
45 Orionis恒星, Double or multiple star, Star in Cluster, Star in Nebula, Infra-Red sourceA360
47 Andromedae恒星, Infra-Red source, 連星, UV-emission sourceA208
48 Cassiopeiae恒星, Double or multiple star, Infra-Red source, 連星, UV-emission source, Variable Star, X-ray sourceA114
48 Ceti恒星, Double or multiple star, Infra-Red source, UV-emission sourceA233