＜p＞BP Piscium was initially thought to be a young star, but astronomers later concluded that it actually fitted a small group of old stars, the FK Com-type stars.＜br /＞ BP Piscium also is thought to have eaten a large planet or a small companion star.＜br /＞ In this article it is argued that BP Piscium is in fact a white dwarf that has not yet thrown off its outer gas layers as a planetary nebula, and that this is also true for the other FK Com-type stars.＜/p＞画面が切り替わりますので、しばらくお待ち下さい。 ※ご購入は、楽天kobo商品ページからお願いします。※切り替わらない場合は、こちら をクリックして下さい。 ※このページからは注文できません。