Sombrero Galaxy (M104, NGC 4594)
A type Sa spiral galaxy in the constellation
Virgo whose unusually large central bulge, richly
populated with several hundred globular clusters,
and dark prominent dust lanes give it the appearance of a Mexican hat; we
see it from about 6° south of its equatorial plane. Discovered by Pierre
Méchain in 1781, it became the first galaxy
for which a large redshift (equivalent
to a recession velocity of about 1,000 km/s) was found, by Vesto Slipher
in 1912. It is also the first galaxy in which rotation was detected, again
by Slipher. Modern studies have shown the Sombrero to have both a very extended
faint halo and a mildly active nucleus indicative of the presence a central
supermassive black hole.
| M104. Wedelstein Observatory
||9' × 4'
||R.A. 12h 40.0m;
Dec. -11° 37'