Disco circunstelar alrededor de HR 4796A (Hubble)
·
NASA/ESA/CSA/STScI
Uno de los objetivos que Webb estudiará es el conocido anillo gigante de polvo y planetesimales que orbita a una joven estrella llamada HR 4796a. Esta foto del telescopio espacial Hubble muestra una vasta y compleja estructura de polvo, de aproximadamente 150 mil millones de millas de ancho, envolviendo la joven Star HR 4796a. (La luz de HR 4796A y su compañero binario, HR 4796b, se han bloqueado para revelar la estructura de polvo mucho más tenue). Un anillo interno brillante y estrecho de polvo que rodea la estrella puede haber sido acorralado por la extracción gravitacional de un planeta gigante no sege. (Universidad de Arizona)
Image Details
| About The Object | |
|---|---|
| Object Name | HR 4796A |
| Object Description | Dusty disk surrounding young star HR 4796A |
| R.A. Position | 12:36:01.03 |
| Dec. Position | -39:52:10.23 |
| Constellation | Centaurus |
| Distance | 237 light-years |
| Dimensions | Image is about 23 arc seconds across (about 0.03 light-years) |
| About The Data | |
| Data Description | The HST observations include those from program (G. Schneider) |
| Instrument | STIS/CCD |
| Exposure Dates | January - July 2015 |
| About The Image | |
| Color Info | These images are a composite of separate exposures acquired by the STIS/CCD instrument on the Hubble Space Telescope. The color results from assigning the color blue to a monochromatic (grayscale) 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. |