Observaciones de Hubble y Webb del disco circunstelar Vega

Observaciones de Hubble y Webb del disco circunstelar Vega

Subtítulo

[izquierda]
Una vista en falso color del Telescopio Espacial Hubble de un disco de polvo de 100 mil millones de millas de ancho alrededor de la estrella de verano Vega. Hubble detecta la luz reflejada del polvo del tamaño de partículas de humo en gran parte en un halo en la periferia del disco. El disco es muy liso, sin evidencia de grandes planetas incrustados. La mancha negra en el centro bloquea el brillo brillante de la joven estrella caliente.

[derecha]
El telescopio espacial James Webb resuelve el brillo del polvo cálido en un halo de disco, a 23 mil millones de millas de distancia. El disco exterior (análogo al Cinturón de Kuiper del sistema solar) se extiende desde 7 mil millones de millas hasta 15 mil millones de millas. El disco interior se extiende desde el borde interior del disco exterior hasta la proximidad de la estrella. Hay una caída notable en el brillo de la superficie del disco interior de aproximadamente 3,7 a 7,2 mil millones de millas. La mancha negra en el centro se debe a la falta de datos de saturación.

Créditos

Imagen

NASA, ESA, CSA, STScI, S. Wolff (Universidad de Arizona), K. Su (Universidad de Arizona), A. Gáspár (Universidad de Arizona)

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Image Details

About The Object
Object Name Vega
Object Description Dusty debris disk
R.A. Position 18:36:56.34
Dec. Position +38:47:01.28
Constellation Lyra
Distance 25 light-years 
About The Data
Data Description The Hubble observations include those from program (S. Wolff) and the Webb observations include those from program  (C. Beichman and A. Gáspár)
Instrument Hubble: STIS; Webb: MIRI
Exposure Dates Hubble: April 2022 - February 2023; Webb: August 2023
Filters Hubble: STIS 50CORON; Webb: MIRI F2550W
About The Image
Color Info These images were acquired by the STIS instrument on the Hubble and MIRI instrument on Webb. The color results from assigning a hue to a monochromatic (grayscale) image, blue for Hubble and orange for Webb.
Compass and Scale Image A two-panel image split down the middle vertically. At the left is the Vega disk as imaged by the Hubble Space Telescope. The disk is perfectly circular, and at the center is a black spot blocking out the bright glow of a star. Closer to the center, the disk is white. Radial striations extend out from the center, giving a ripple effect to the disk like the end of a sausage casing. The outer edge of the circular disk is blue. At the right, the Webb image of the disk is an orange colored, smooth, fuzzy halo. The inner disk is whiter toward the center, and there is darker lane between the inner disk and the more orange outer disk. The disk is also perfectly circular, with a black circle in the center due to lack of data from saturation.
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
Color Info A brief description of the methods used to convert telescope data into the color image being presented.
Compass and Scale Image An astronomical image with a scale that shows how large an object is on the sky, a compass that shows how the object is oriented on the sky, and the filters with which the image was made.

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