Nova Persei

Nova Persei

also designated  GK Persei 

      bright nova that attained an absolute magnitude of −9.2. Spectroscopic observations of the nova, which appeared in 1901, provided important information about interstellar gas. The shell thrown off by the exploding star was unusually asymmetrical, and a bright nebulosity near the star appeared to be expanding incredibly fast, at practically the speed of light. This apparent speed is thought to have been an effect of reflection within a preexisting dark nebula around the star. From this phenomenon, sometimes called a light echo, it was possible to calculate the distance of the nova from Earth, about 650 light-years.

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  • Nova Persei — Nova No va (n[=o] v[.a]), n.; pl. L. {Novae} (n[=o] v[=e]), E. {Novas} (n[=o] v[.a]z). [L., fem. sing. of novus new.] (Astron.) A star which suddenly increases in brightness thousands of times, then fades back to near its original intensity. It… …   The Collaborative International Dictionary of English

  • Nova Persei — GK Persei (auch Nova Persei) war eine helle Nova, die 1901 im Sternbild Perseus aufleuchtete und eine Helligkeit von 0,2 mag erreichte. Der Namensteil „GK“ folgt den Regeln zur Benennung veränderlicher Sterne und besagt, dass GK Persei der 193te… …   Deutsch Wikipedia

  • Nova Persei 1901 — GK Persei GK Persei (ou Nova Persei 1901) était une nova qui survint en 1901 dans la constellation de Persée. Elle atteignit une luminosité maximale de 0.2 mag. Elle fut découverte par Thomas David Anderson. Coordonnées Ascension droite :… …   Wikipédia en Français

  • Nova — No va (n[=o] v[.a]), n.; pl. L. {Novae} (n[=o] v[=e]), E. {Novas} (n[=o] v[.a]z). [L., fem. sing. of novus new.] (Astron.) A star which suddenly increases in brightness thousands of times, then fades back to near its original intensity. It may… …   The Collaborative International Dictionary of English

  • Nova Andromedae — Nova No va (n[=o] v[.a]), n.; pl. L. {Novae} (n[=o] v[=e]), E. {Novas} (n[=o] v[.a]z). [L., fem. sing. of novus new.] (Astron.) A star which suddenly increases in brightness thousands of times, then fades back to near its original intensity. It… …   The Collaborative International Dictionary of English

  • Nova Aurigae — Nova No va (n[=o] v[.a]), n.; pl. L. {Novae} (n[=o] v[=e]), E. {Novas} (n[=o] v[.a]z). [L., fem. sing. of novus new.] (Astron.) A star which suddenly increases in brightness thousands of times, then fades back to near its original intensity. It… …   The Collaborative International Dictionary of English

  • Nova Coronae Borealis — Nova No va (n[=o] v[.a]), n.; pl. L. {Novae} (n[=o] v[=e]), E. {Novas} (n[=o] v[.a]z). [L., fem. sing. of novus new.] (Astron.) A star which suddenly increases in brightness thousands of times, then fades back to near its original intensity. It… …   The Collaborative International Dictionary of English

  • Nova Cygni — Nova No va (n[=o] v[.a]), n.; pl. L. {Novae} (n[=o] v[=e]), E. {Novas} (n[=o] v[.a]z). [L., fem. sing. of novus new.] (Astron.) A star which suddenly increases in brightness thousands of times, then fades back to near its original intensity. It… …   The Collaborative International Dictionary of English

  • Nova Aurigae 1892 — T Aurigae T Aurigae (ou Nova Aurigae 1892) était une nova qui devint brillante en 1892, dans la constellation du Cocher. Elle atteignit une luminosité de 3.8 mag qui diminua ensuite durant 100 jours pour se stabiliser à environ 3 mag. De nos… …   Wikipédia en Français

  • Nova récurrente — Nova Pour les articles homonymes, voir Nova (homonymie). Nova pendant et après explosion En astronomie, une nova est une étoile qui devient très brutalement extrêmement brillante, avec une …   Wikipédia en Français

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