Tycho G

Tycho G

Starbox begin
name=Tycho G
Starbox image


caption=Tycho G ("g") as seen by Hubble. "NASA image".
Starbox observe
epoch=J2000
constell=Cassiopeia
ra=RA|00|25|19.9 [http://hubblesite.org/pubinfo/pdf/2004/34/pdf.pdf] The progenitor of Tycho Brahe’s 1572 supernova]
dec=DEC|64|08|18.2
appmag_v=17
Starbox character
class=G2 IV
b-v=0.60
u-b=
variable=
Starbox astrometry
radial_v=
prop_mo_ra=−2.60
prop_mo_dec=−6.11 [±1.34]
p_error=
absmag_v=
Starbox detail
age=
metal=about 100% Sun
mass=about 1
radius= 2 [±1]
rotation=
luminosity=about 1
temperature=5750
Starbox catalog
names=
Starbox reference
Simbad=
ARICNS =

Tycho G is the surviving binary companion star of the SN 1572 supernova event.

The star is located about 7500 light-years away in the constellation Cassiopeia. It is a subgiant, similar to our Sun in luminosity and color but more evolved.

Tycho G is still close to the center of the supernova remnant and had triggered once the explosion of its binary companion white dwarf star by contributing mass to it.

Evidence for Companion Thesis

* Tycho G' is traveling at a rate of 136 km/s, which is more than four times faster than the mean velocity of other stars in its stellar neighbourhood.

* Tycho G's metallicity is about 3 times higher than the mean metallicity of other stars in its stellar neighbourhood.

Origin of the Name

The supernova SN 1572 is often called "Tycho's supernova", named after Tycho Brahe who observed the "new star" in 1573.

The postfix "G" originates from the candidate companion stars considered, labelled Tycho A to Tycho V.

ee also

* List of supernova remnants

Reference

External links

* [http://www.mpa-garching.mpg.de/mpa/research/current_research/hl2005-3/hl2005-3-en-print.html Discovery of the binary companion of Tycho Brahe's supernova]
* http://jumk.de/astronomie/special-stars/tycho-g.shtml
* http://www.skyandtelescope.com/news/3309696.html?page=1&c=y


Wikimedia Foundation. 2010.

Игры ⚽ Поможем решить контрольную работу

Look at other dictionaries:

  • Tycho — may refer to:*Tycho Brahe (1546–1601), Tyge Ottesen Brahe, Danish nobleman and astronomer *Tycho (crater), on the Moon *Tycho Brahe (crater), on Mars *The Tycho 1 Catalogue or Tycho 2 Catalogue of stars *Tycho Celchu, a character in the fictional …   Wikipedia

  • Tycho — m Latinized form of the name of St Tychon (d. c.450), bishop of Amathus in Cyprus, who worked to suppress the last remnants of the cult of Aphrodite on the island. The Greek name Tychōn means ‘hitting the mark’, and was chosen for the sake of its …   First names dictionary

  • Tycho — Nahaufnahme des Kraters Tycho Eigenschaften Breitengrad 43,3° S Längengrad 11,2° W Durchmesser 85 km …   Deutsch Wikipedia

  • Tycho — Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom. Tycho est le prénom de Tycho Brahe astronome danois qui a donné son nom à : Tycho (cratère), un cratère lunaire, Les Épaves de Tycho, une nouvelle et …   Wikipédia en Français

  • Tycho — /tuy koh/, n. a prominent crater in the third quadrant of the face of the moon, about 56 miles (90 km) in diameter. * * * ▪ lunar crater  conspicuous impact crater lying at the centre of the most extensive system of bright rays on the near side… …   Universalium

  • Tycho — griechischer Ursprung, Bedeutung: Schicksal, Glück. Namensträger: Tycho Brahe, dänischer Astronom …   Deutsch namen

  • Tycho — n. large important crater on the face of the moon; Danish family name; Brahe Tycho (1546 1601) Danish astronomer …   English contemporary dictionary

  • Tycho — /ˈtaɪkoʊ/ (say tuykoh) noun a crater in the south eastern quadrant of the moon. {named after Tycho Brahe} …  

  • Tycho-Brahé — Tycho Brahe Pour les articles homonymes, voir Brahé. Tycho Brahe Portrait de Tycho Brahe Naissance …   Wikipédia en Français

  • Tycho Brahé — Tycho Brahe Pour les articles homonymes, voir Brahé. Tycho Brahe Portrait de Tycho Brahe Naissance …   Wikipédia en Français

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”