NGC 772 – Spiral Galaxy in Aries is classified as a Spiral Galaxy (SAb) according to the Hubble and de Vaucouleurs morphological classification. ngc 772 – Spiral Galaxy in Aries is classified as a Spiral Galaxy (SAb) according to the Hubble and de Vaucouleurs morphological classification. Two supernovae (SN 2003hl and SN 2003iq) have been observed in NGC 772, both of type II. NGC 770 appears to be an elliptical galaxy located at about the same distance as NGC 772 and is a companion to the larger spiral system.
NGC 770 appears to be an elliptical galaxy located at about the same distance as NGC 772 and is a companion of the larger spiral system. NGC 772 with its interacting elliptical dwarf partner NGC 770, which is almost directly above NGC 772. NGC 772 – Spiral Galaxy in Aries is classified as a spiral galaxy (SAb) according to the Hubble and de Vaucouleurs morphological classification. NGC 772 – Spiral Galaxy in the Constellation Aries NGC 772 and the elliptical dwarf galaxy NGC 770, also known as Arp 78, are a physically close pair of galaxies in the constellation Aries.
Who discovered NGC 772?
Halton Arp lists NGC 772 as Arp 78 in his Atlas of Peculiar Galaxies, where it is described as a spiral galaxy with a small companion of high surface brightness. The galaxy is about 200,000 light-years across and is surrounded by several satellite galaxies – including the elliptical dwarf galaxy NGC 770 – whose tidal forces on the larger galaxy probably caused the formation of a single, elongated outer spiral arm that is much more developed than the other arms. NGC 772 is about 200,000 light-years across and twice the size of the Milky Way. It is surrounded by several satellite galaxies – including the elliptical dwarf galaxy NGC 770 – whose tidal forces on the larger galaxy probably caused the formation of a single elongated outer spiral arm that is much more evolved than the other arms. Halton Arp listed NGC 772 along with NGC 770 in his Atlas of Peculiar Galaxies as Arp 78, where it is described as a spiral galaxy with a small companion of high surface brightness.
What is so special about the galaxy NGC 1052-DF2?
The mystery surrounding the galaxy NGC 1052-DF2 deepens with each new revelation astronomers make with the Hubble Space Telescope. AURA’s Space Telescope Science Institute in Baltimore, Maryland, manages Hubble’s science operations. NGC 1052-DF2 is an ultra-diffuse galaxy (UDG) in the constellation Cetus, identified in a wide-field survey of the NGC 1052 group with the Dragonfly Telephoto Array. This suggests that a significant part of NGC 1052-DF2 could be made up of dark matter, like all the other galaxies.
The proximity of the massive galaxy NGC 1052 and the particular radial velocity of DF2 (293 km s-1 at a distance of 20 Mpc) would support this hypothesis.
What kind of galaxy is NGC 1052?
The ghostly object catalogued as NGC 1052-DF2 has neither a prominent central region nor spiral arms or a disk, typical features of a spiral galaxy. It is located at a projected distance of 285 (165 kpc) from NGC 1052 itself, a factor of two further than NGC1052-DF2, and 26′ (150 kpc) from the spiral galaxy NGC 1042 (which almost certainly also belongs to this group; see van Dokkum et al. We have chosen to retain NGC 1052-DF2 because the galaxy has become known by this name in the recent literature. We find several distinct tidal features associated with NGC 1052, including clear evidence of interaction with NGC 1047.
