logo
   

VVV Latest News

VISTA Science Verification Data available

VISTA Science Verification (SV) observations were carried out on 15 nights between October 15 - November 02, 2009. ESO provides the details of the two approved VISTA Science Verification programs, including: information on the phase2, the actually executed observation and the data obtained. Follow this link to ESO for more details and... READMORE

Tuesday, 26 January 2010

Science verification and dry run data

After the recent ESO hand over of the VISTA telescope to ESO, the science verification data has been released. Two of our team members had provided us with some data test and analysis. READMORE

Wednesday, 16 December 2009

ESO-VISTA Press Realease

A new telescope — VISTA (the Visible and Infrared Survey Telescope for Astronomy) — has just started work at ESO’s Paranal Observatory and has made its first release of pictures. VISTA is a survey telescope working at infrared wavelengths and is the world’s largest telescope dedicated to mapping the sky.... READMORE

Tuesday, 15 December 2009

Status report for VVV team

Some news had been published for the VVV team members. Please login to check on the status report of the VISTA telescope and public survey programs. READMORE

Monday, 14 September 2009

100%
-
+
4
Show options
ESO-VISTA Press Realease PDF Print E-mail
Written by Administrator   
Tuesday, 15 December 2009 00:00

A new telescope — VISTA (the Visible and Infrared Survey Telescope for Astronomy) — has just started work at ESO’s Paranal Observatory and has made its first release of pictures. VISTA is a survey telescope working at infrared wavelengths and is the world’s largest telescope dedicated to mapping the sky. Its large mirror, wide field of view and very sensitive detectors will reveal a completely new view of the southern sky. Spectacular new images of the Flame Nebula, the centre of our Milky Way galaxy and the Fornax Galaxy Cluster show that it is working extremely well.

The Complete Press Release 

ESO VISTA Flame Nebula 

Last Updated on Thursday, 28 January 2010 15:59
 
VISTA Variables in the Via Lactea: An International/ESO/VISTA public survey PDF Print E-mail
Written by Administrator   
Tuesday, 09 December 2008 22:47
What is the structure of the inner Galactic bulge? How did the Milky Way form?

Thanks to the VISTA 4 meter telescope and its superb near-infrared camera, the VIRCAM, new observations can be done to help the astronomers to further answer these kind of questions.

Even when the Milky Way can be observed by the naked eye from dark places at night, because of our position on the Galaxy we can actually only see our nearest neighborhood: dust, gas, and the other stars block the light from other places of our galaxy and we can't observe far into the bulge. At least in the "visual" part of the spectrum of the light.

VISTA, the Visible and Infrared Survey Telescope for Astronomy, it is optimized to detect the near-infrared wavelengths of the light of the stars, which can travel further through the dust. This fact, along with its privileged site on the Southern Hemisphere, will allow us to map the Bulge with improved detail and perspective.

Previously, all-sky 2 dimensional maps in near-infrared wavelengths have been done with one epoch data. Otherwise, multi-epochs observations have been carried out for specific small field of view targets on the bulge an disk. The VVV public survey will perform multi-epoch and wide FOV observations of the Galaxy's bulge and part of the disk, providing the astronomical public community with a high resolution 3-D (or 4-D if you include the time dimension) map of the bulge.

 

Español 

¿Cuál es la estructura del interior del bulbo de la Galaxia?  ¿Cómo se formó la Vía Láctea?

Gracias al telescopio de 4 metros VISTA y su impresionante cámara para el infrarrojo cercano, VIRCAM, se podrán realizar nuevas observaciones que ayuden a los astrónomos a responder de modo más detallado este tipo de preguntas.

A pesar de que la Vía Láctea puede ser vista a ojo desnudo durante la noche desde lugares oscuros, nuestra posición dentro de la Galaxia hace que sólo podamos ver realmente nuestro vecindario más cercano: el polvo, el gas y las otras estrellas nos ocultan la luz que proviene de otras regiones lejanas de nuestra galaxia, limitando fundamentalmente nuestra visión en dirección al núcleo galáctico. Este escenario es el que acontece en la región  "visible" del espectro de la luz.

VISTA, el telescopio para Surveys visuales e infrarrojos, está optimizado para la observación de la luz de las estrellas en las longitudes de onda del infrarrojo cercano. La luz  infrarroja puede atravesar con mayor facilidad las profundidades galácticas porque es atenuada por el polvo galáctico en mucha menor medida que la luz visible. Este fenómeno, junto con la ubicación del telescopio en un sitio privilegiado del hemisferio sur, nos permitirá construir un mapa del Bulbo y parte del Plano Galáctico con detalles y perspectiva no logrados anteriormente.

Los mapas anteriores en 2 dimensiones en el infrarrojo cercano se han hecho con datos tomados en una sola época de observación. Cuando se han realizado estudios con datos de varias épocas, estos han sido de áreas especificas del Núcleo o el disco Galácticos con campos de visión pequeños. El programa público VVV obtendrá observaciones infrarrojas en varias épocas, que incluirán un enorme área del cielo que  incluye al Bulbo, Centro y parte del Disco Galáctico, ofreciendo a la comunidad científica un mapa en 3 dimensiones (o 4, si se considera la dimensión temporal) de buena parte de la Vía Láctea.

Last Updated on Tuesday, 06 October 2009 11:13
 
VVV Top 10 Immediate Science Goals PDF Print E-mail
Written by Administrator   
Thursday, 29 January 2009 15:02
  1. To find RR Lyrae in the bulge, wich will allow us to obtain a 3D picture of the bulge.
  2. To identify variables belonging to known clusters.
  3. To search for new star clusters.
  4. To map star forming regions along the plane.
  5. To find eclipsing binaries and planetary transits.
  6. To search for microlensing events.
  7. To study rare variable sources.
  8. To monitor the variability around the Galactic Center.
  9. To find variable stars in the Sgr dSph galaxy.
  10. To identify background QSOs and high proper motion objects.
Last Updated on Tuesday, 06 October 2009 11:23
 
VVV Numbers PDF Print E-mail
Written by Administrator   
Thursday, 29 January 2009 15:11

A total of 1920 observation hours will be used at VISTA, within a 5 year time lapse.

109 point sources will be monitored, in a 520 sqr. degrees area: arround 2600 times the angular area of the moon!

A catalogue of 106 variable sources is expected to be published.

The depth of the observations on the 5 IR bands will be:

  • 21.6 magnitudes at Z
  • 20.9 at Y
  • 20.6 at J
  • 19.0 at H
  • 20.0 at Ks