Sorpresa dentro de una nube
Esta imagen muestra una región de la Vía Láctea que se encuentra dentro de la constelación de Escorpio, cerca del plano central de la galaxia. La región alberga una densa nube de polvo y gas asociada a la nube molecularIRAS 16562-3959, claramente visible como una mancha anaranjada que destaca de entre la rica colección de estrellas del centro de la imagen.
Este tipo de nubes son el caldo de cultivo para nuevas estrellas. En el centro de esta nube, más allá del velo que forman polvo y gas, sólo se aprecia el objeto luminoso conocido como G345.4938+01.4677. Se trata de una estrella muy joven que se está formando a medida que la nube colapsa por los efectos de la gravedad.
La joven estrella es muy brillante y pesada (es unas 15 veces más masiva que el Sol) y ha sido fruto de un trabajo de investigación con ALMA (Atacama Large Millimeter/submillimeter Array). El equipo de astrónomos hizo descubrimientos sorprendentes dentro de G345.4938 + 01.4677: hay un gran disco de gas y polvo alrededor de las estrellas en formación, así como un flujo de material que fluye hacia el exterior.
Las teorías predicen que ni una corriente de este tipo, ni el disco en sí mismo, deberían existir alrededor de estrellas como G345.4938 + 01.4677, ya que se piensa que el material ha sido expulsado lejos del objeto debido a la fuerte radiación que emiten estas nuevas estrellas masivas.
Esta imagen fue realizada utilizando el telescopio VISTA (Visible and Infrared Survey Telescope for Astronomy), que forma parte del Observatorio Paranal de ESO, en el desierto de Atacama, en Chile. Es el telescopio de rastreo más grande del mundo, con un espejo principal que mide cuatro metros de ancho. La imagen a color forma parte del sondeo VVV, uno de los seis grandes sondeos públicos que se dedican a mapear el cielo austral.
La estrella brillante de la parte inferior izquierda de la imagen es conocida como HD 153220.
Crédito:ESO/VVV Team/A. Guzmán
Sobre la imagen
| Identificador: | potw1448a |
| Idioma: | es-cl |
| Tipo: | Observación |
| Fecha de publicación: | 1 de Diciembre de 2014 a las 10:00 |
| Tamaño: | 2640 x 2637 px |
Sobre el objeto
| Nombre: | IRAS 16562-3959 |
| Tipo: | Milky Way : Nebula : Appearance : Dark : Molecular Cloud |
| Constellation: | Scorpius |
Fondo de pantalla
Coordenadas
| Position (RA): | 16 59 41.76 |
| Position (Dec): | -40° 3' 42.70" |
| Field of view: | 14.99 x 14.98 arcminutes |
| Orientación: | El norte está a 38.1° a la derecha de la vertical |
Colores y filtros
| Banda | Telescopio |
|---|---|
| Infrarrojo J | Visible and Infrared Survey Telescope for Astronomy VIRCAM |
| Infrarrojo H | Visible and Infrared Survey Telescope for Astronomy VIRCAM |
| Infrarrojo Ks | Visible and Infrared Survey Telescope for Astronomy VIRCAM |
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