Question

Answers The 20 Brichiest Stars as seen from Earth Distance Tempera Absolute Name puses KI Magnitude Sirius 27 10 400 12 Canopus 300 7 400 165 Alpha Centauri 13 5 800 Arcturus 11.0 4 500 Vega + 0.5 Capella Rigel 250.0 - 6.8 14,7 3.5 + 2.7 - 5.5 The 20 Neams Sea Distance per Abate ON Magnitude Ah Centut 131 5 SOO Barand Star 13 2 800 Wolf 359 2.35 2 700 Talude 2185 2.49 3200 Sirius 10 400 Luyten 726-8 2.67 2 700 Ross 154 2.94 2 800 Ross 248 3.16 2 700 Epsilon Eridani 3.30 4 500 Ross 128 3.37 2 800 + 13.5 Luyten 789-6 3.37 2 700 + 149 61 Cygni 3.40 2 800 7.5 Procyon 6800 + 27 Epsilon Indi 3.51 4200 + 7.0 Sigma 2398 3.60 3 000 + 11.1 BD-43044 3.60. 3 200 + 10.3 Tau Ceti 3.64 5 200 + 5.7 CD -36°15693 3.66 3 100 + 9.6 BD +5°1668 3.76 3000 +11.9 CD -39°14192 3.92 3 500 + 8.7 1.0 10 700 5 900 11 800 6 800 3 200 14 000 21 000 8 000 21 000 4 20 150.0 20.0 90.0 5.1 4.1 + 2.2 3.47 16. 0 Procyon Betelgeuse Achemar Beta Centauri Altair Alpha Crucis Aldebaran Spica Antares Pollux Fomalhaut Deneb Beta Crucis - 4.0 - 0.2 - 3.6 - 4.5 + 0.8 80. 0 120.0 12.0 7.0 430. 0 150.0 21 000 3400 4900 9 500 9900 22.000 + 2.0 1 69 - 4.6

Answer 1

1.

Name of Star Distance Temperature Magnitude

Alpha Centauri	1.31	5800	+4.4
Sirius	2.67	10400	+1.4
Procyon	3.47	6800	+2.7

2. All the common stars which are nearest and brightest as seen from the earth have low distances (nearer) and low absolute magnitude ascompared to other stars that are in the list of nearest to the earth. This builds relationship that closer a star is the more brighter it will look , the farther star will look dimmer and the more important is that brighter objects have smaller absolute magnitude than fainter objects, the brightness of the stars are are recognized by the magnitude system , that how bright star appear to the unaided eye. The absolute magnitude is a measure of the star's luminosity ot is the total amount of energy radiated by the star every second.