Los astrónomos utilizaron el telescopio espacial James Webb para mirar hacia el centro de M82, donde se lanza un viento galáctico como resultado de la formación rápida de estrellas y las supernovas posteriores. Estudiar el viento galáctico puede ofrecer información sobre cómo la pérdida de gas da forma al crecimiento futuro de la galaxia.
Esta imagen del instrumento Nircam (cámara de infrarrojo cercano) de Webb muestra el viento galáctico de M82 a través de la emisión de moléculas químicas hollín conocidas como hidrocarburos aromáticos policíclicos (PAH). Los HAP son granos de polvo muy pequeños que sobreviven a temperaturas más frías, pero se destruyen en condiciones de calor. La estructura de la emisión se asemeja a la de gas caliente e ionizado, lo que sugiere que los HAP pueden reponerse por la ionización continua del gas molecular.
En esta imagen, la luz a 3.35 micras es de color rojo, 2.50 micras es verde y 1.64 micras es azul (filtros F335M, F250M y F164N, respectivamente).
créditos
Imagen
Nasa, ESA, CSA, STSCI, Alberto Bolatto (Umd)
| About The Object | |
|---|---|
| Object Name | M82, NGC 3034 |
| Object Description | Starburst Galaxy |
| R.A. Position | 09:55:52.0 |
| Dec. Position | 69:40:48.99 |
| Constellation | Ursa Major |
| Distance | 12 million light-years (3.7 Megaparsecs) |
| About The Data | |
| Data Description | This image was created with Webb data from proposal: (M. Marin). Image processing: Alyssa Pagan (STScI). |
| Instrument | JWST>NIRCam |
| Exposure Dates | 5 Janurary 2024 |
| Filters | JWST> F164N, F250W, F335M |
| About The Image | |
| Color Info | This image is a composite of separate exposures acquired by the James Webb Space Telescope using the NIRCam instrument. Several filters were used to sample varying 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: F164N, Green: F250W, Red: F335M |
| 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. |
