Variable stars close to the galactic centre

This image, captured with the VISTA infrared survey telescope, as part of the Variables in the Via Lactea (VVV) ESO public survey, shows the central part of the Milky Way. While normally hidden behind obscuring dust, the infrared capabilities of VISTA allow to study the stars close to the galactic centre.

Within this field of view astronomers detected several ancient stars, of a type known as RR Lyrae. As RR Lyrae stars typically reside in ancient stellar populations over 10 billion years old, this discovery suggests that the bulging centre of the Milky Way likely grew through the merging of primordial star clusters.

Telif:

ESO/VVV Survey/D. Minniti

Görüntü Hakkında

Kimlik:eso1636a
Tür:Gözlem
Yayın tarihi:12 Ekim 2016 12:00
Bağlantılı bültenler:eso1636
Boyut:15591 x 12672 px

Nesne Hakkında

Adı:RR Lyr
Tür:Milky Way : Star : Type : Variable
Constellation:Ophiuchus
Kategori:Stars

Görüntü Türleri

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9,8 MB

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Koordinatlar

Position (RA):17 43 51.55
Position (Dec):-29° 17' 47.78"
Field of view:88.55 x 71.97 arcminutes
Yönelim:Kuzey yönü 58.6° sol derece kadar dik konumdan sapma göstermektedir

Renkler & Filtreler

BantDalgaboyuTeleskop
Kırmızı ötesi
J
1.25 μmVisible and Infrared Survey Telescope for Astronomy
VIRCAM
Kırmızı ötesi
H
1.65 μmVisible and Infrared Survey Telescope for Astronomy
VIRCAM
Kırmızı ötesi
Ks
2.15 μmVisible and Infrared Survey Telescope for Astronomy
VIRCAM

 

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