NGC 2787
Encyclopedia
NGC 2787 is a barred lenticular galaxy
approximately 24 million light-year
s away in the constellation
Ursa Major
. In 1999, the Hubble Space Telescope
took a look at NGC 2787.
(LINER), a type of region that is characterized by spectral line
emission from weakly ion
ized atoms. LINERs are very common within lenticular galaxies, approximately one-fifth of nearby lenticular galaxies contain LINERs.
Barred lenticular galaxy
A barred lenticular galaxy is a lenticular version of a barred spiral galaxy. They have the Hubble type of SB0....
approximately 24 million light-year
Light-year
A light-year, also light year or lightyear is a unit of length, equal to just under 10 trillion kilometres...
s away in the constellation
Constellation
In modern astronomy, a constellation is an internationally defined area of the celestial sphere. These areas are grouped around asterisms, patterns formed by prominent stars within apparent proximity to one another on Earth's night sky....
Ursa Major
Ursa Major
Ursa Major , also known as the Great Bear, is a constellation visible throughout the year in most of the northern hemisphere. It can best be seen in April...
. In 1999, the Hubble Space Telescope
Hubble Space Telescope
The Hubble Space Telescope is a space telescope that was carried into orbit by a Space Shuttle in 1990 and remains in operation. A 2.4 meter aperture telescope in low Earth orbit, Hubble's four main instruments observe in the near ultraviolet, visible, and near infrared...
took a look at NGC 2787.
LINER emission
NGC 2787 contains a low-ionization nuclear emission-line regionLow-ionization nuclear emission-line region
A low-ionization nuclear emission-line region is a type of galactic nucleus that is defined by its spectral line emission. The spectra typically include line emission from weakly ionized or neutral atoms, such as O, O+, N+, and S+. Conversely, the spectral line emission from strongly ionized...
(LINER), a type of region that is characterized by spectral line
Spectral line
A spectral line is a dark or bright line in an otherwise uniform and continuous spectrum, resulting from a deficiency or excess of photons in a narrow frequency range, compared with the nearby frequencies.- Types of line spectra :...
emission from weakly ion
Ion
An ion is an atom or molecule in which the total number of electrons is not equal to the total number of protons, giving it a net positive or negative electrical charge. The name was given by physicist Michael Faraday for the substances that allow a current to pass between electrodes in a...
ized atoms. LINERs are very common within lenticular galaxies, approximately one-fifth of nearby lenticular galaxies contain LINERs.