Esta imagen del telescopio espacial Hubble de larga exposición del clúster de galaxia masiva Abell 2744 muestra algunas de las galaxias más débiles y más jóvenes jamás detectadas en el espacio. Abell 2744, ubicado en el escultor de constelación, aparece en el primer plano de esta imagen. Contiene varios cientos de galaxias, ya que parecían hace 3.500 millones de años. La inmensa gravedad en Abell 2744 actúa como una lente gravitacional para deformar el espacio y alegrar y magnificar imágenes de casi 3.000 galaxias de fondo distantes. Las galaxias más distantes aparecen como lo hicieron hace más de 12 mil millones de años, no mucho después del Big Bang.
Una nueva investigación muestra que el telescopio espacial James Webb podría detectar las primeras estrellas y los agujeros negros en el universo, si sean lentes gravitacionales por un clúster como Abell 2744. Se necesitaría una alineación muy precisa de la estrella del clúster y los antecedentes, por lo que se necesitaría Webb para observar un número de clusters repetidos para la mejor oportunidad de éxito.
Cededs. Imagen
NASA, ESA, Jennifer Lotz (Stsci), Matt Mountain (Stsci), Anton M. Koekemoer (Stsci), HFF Team (STSCI)
| About The Object | |
|---|---|
| Object Name | Abell 2744, Pandora's Cluster |
| Object Description | Galaxy Cluster and Gravitational Lens |
| R.A. Position | 00h 14m 19.5s |
| Dec. Position | -30° 23' 19.18" |
| Constellation | Sculptor |
| Distance | Redshift: z=0.308 |
| About The Data | |
| Data Description | Data were obtained as part of the HST proposals (R. Dupke), (S. Rodney), and (J. Lotz). |
| Instrument | HST>ACS/WFC and HST>WFC3/IR |
| Exposure Dates | October 2009; August - November 2013 Exposure Time: 67 hours |
| Filters | ACS/WFC: F435W (B), F606W (V), F814W (I) WFC3/IR: F105W (Y), F125W (J), F140W (JH), F160W (H) |
| About The Image | |
| Color Info | This image is a composite of separate exposures acquired by the ACS and WFC3 instruments on the Hubble Space Telescope. Several filters were used to sample broad 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: Blue: F435W (B) + F606W (V) Green: F814W (I) + F105W (Y) Red: F125W (J) + F140W (JH) + F160W (H) |
| 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. |
