DWARF GALAXY SPOTTED BEHIND GLOBULAR STAR CLUSTER
This is a Hubble Space Telescope image of a concentration of stars within the globular cluster NGC 6752. Hidden among the stars is an image of a background galaxy that is much farther away. The diminutive galaxy, named by its discoverers as Bedin 1, measures only around 3,000 light-years at its greatest extent — a fraction of the size of the Milky Way. Not only is it tiny, but it is also incredibly faint. These properties led astronomers to classify it as a dwarf spheroidal galaxy that is as old as the universe.
Credits
NASA, ESA, and L. Bedin (Astronomical Observatory of Padua, Italy)| About The Object | |
|---|---|
| Object Name | Bedin 1 in NGC 6752 |
| Object Description | Dwarf galaxy located behind foreground globular cluster |
| R.A. Position | 19:10:45.41 |
| Dec. Position | -59:55:04.32 |
| Constellation | Pavo |
| Distance | The object lies about 28 million light-years away from Earth. |
| Dimensions | Image is about 1 arcmin across (about 9,000 light-years). |
| About The Data | |
| Data Description | Hubble data for this release were obtained from HST proposal (L. Bedin) |
| Instrument | ACS/WFC |
| Exposure Dates | September 9-13, 2018 |
| Filters | F606W, F814W |
| About The Image | |
| Color Info | These images are a composite of separate exposures acquired by the ACS instrument on the Hubble Space Telescope. Several filters were used to sample narrow wavelength ranges. The color results from assigning different hues (colors) to each monochromatic (grayscale) image associated with an individual filter. In this case, the assigned colors are: Cyan: F606W Orange: F814W |
| Compass Image |  |
| About The Object | |
|---|---|
| Object Name | A name or catalog number that astronomers use to identify an astronomical object. |
| Object Description | The type of astronomical object. |
| R.A. Position | Right ascension – analogous to longitude – is one component of an object's position. |
| Dec. Position | Declination – analogous to latitude – is one component of an object's position. |
| Constellation | One of 88 recognized regions of the celestial sphere in which the object appears. |
| Distance | The physical distance from Earth to the astronomical object. Distances within our solar system are usually measured in Astronomical Units (AU). Distances between stars are usually measured in light-years. Interstellar distances can also be measured in parsecs. |
| Dimensions | The physical size of the object or the apparent angle it subtends on the sky. |
| About The Data | |
| Data Description |
|
| Instrument | The science instrument used to produce the data. |
| Exposure Dates | The date(s) that the telescope made its observations and the total exposure time. |
| Filters | The camera filters that were used in the science observations. |
| About The Image | |
| Image Credit | The primary individuals and institutions responsible for the content. |
| Publication Date | The date and time the release content became public. |
| Color Info | A brief description of the methods used to convert telescope data into the color image being presented. |
| Orientation | The rotation of the image on the sky with respect to the north pole of the celestial sphere. |
