Disco circunstelar alrededor de HR 4796A (Hubble)

Disco circunstelar alrededor de HR 4796A (Hubble)

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)

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
  • Proposal: A description of the observations, their scientific justification, and the links to the data available in the science archive.
  • Science Team: The astronomers who planned the observations and analyzed the data. "PI" refers to the Principal Investigator.
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.

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