Hubble/Webb de lado a lado de Dimorphos eyecta

Hubble/Webb de lado a lado de Dimorphos eyecta

Por primera vez, el telescopio espacial James Webb de la NASA y el telescopio espacial Hubble han tomado observaciones simultáneas del mismo objetivo. 

Estas imágenes, Hubble a la izquierda y Webb a la derecha, muestran observaciones del sistema Didimos-Dimorphos varias horas después de la prueba de redirección de asteroides dobles de la NASA (DART) impactó intencionalmente el asteroide Moonlet. Fue la primera prueba del mundo de la técnica de impacto cinético utilizando una nave espacial para desviar un asteroide modificando su órbita. 

Tanto Webb como Hubble observaron el asteroide antes y después de que tuvo lugar la colisión. 

Los científicos utilizarán las observaciones combinadas de Hubble y Webb para obtener conocimiento sobre la naturaleza de la superficie de los dimorfos, cuánto material fue expulsado por la colisión, cuán rápido se expulsó y la distribución de los tamaños de partículas en la nube de polvo en expansión. para observar la eyección de los dimorfos aún más. Los datos espectroscópicos proporcionarán a los investigadores información sobre la composición del asteroide. Hubble monitoreará a Dimorphos diez más veces durante las próximas tres semanas para monitorear cómo la nube de eyectas se expande y se desvanece con el tiempo.

Las observaciones de Hubble se llevaron a cabo en un filtro, WFC3/UVIS F350LP (asignado el color azul) mientras se observó Webb a F070W (0.7 microns asignado el color Red).

n -Circam se creó a F070W (0.7 Microns, asignado el color Red).

n -Circam se creó a F070W (0.7 Microns, asignado el color Red de color).

créditos

Science

Nasa, ESA, CSA, Jian-Yang Li (psi), Cristina Thomas (Northern Arizona University), ian wong (nasa-gsfc)

Joseph Depasquale (STSCI), Alyssa Pagan (STSCI)

About The Object
Object Name Dimorphos
Object Description Double Asteroid Redirection Test (DART) on asteroid Dimorphos
About The Data
Data Description This image was created from HST data from proposal (J. Li) and JWST data from proposal: (C. Thomas).
Instrument HST>WFC3/UVIS JWST>NIRCam
Exposure Dates 26-27 Sept 2022
Filters HST>F350LP JWST>F070W
About The Image
Color Info The images are single exposures acquired by the WFC3 instrument on the Hubble Space Telescope and the by the NIRCam instrument on the James Webb Space Telescope. The color results from assigning a blue hue to a monochromatic (grayscale) hubble image and a red hue to a monochromatic (grayscale) Webb image.  Blue: HST>F350LP Red: JWST>F070W
Compass Image Image is two columns, the column on the left is a photo with a black background and a bright blue spot at the center, labeled as Hubble. There is a bright haze around the dot, which is the Didymos-Dimorphos system, along with 5 diffraction spikes extending outward. The photo on the right is a black background with a bright red spot toward the middle of the image. The spot, which is the asteroid the Didymos-Dimorphos system after impact from DART, has 8 diffraction spikes extending out from its center. Also surrounding the asteroid is a haze of bright light with wispy tendrils extending outwards.
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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