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
Görüntü Türleri
Duvarkağıtları
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
Bant | Dalgaboyu | Teleskop |
---|---|---|
Kırmızı ötesi J | 1.25 μm | Visible and Infrared Survey Telescope for Astronomy VIRCAM |
Kırmızı ötesi H | 1.65 μm | Visible and Infrared Survey Telescope for Astronomy VIRCAM |
Kırmızı ötesi Ks | 2.15 μm | Visible and Infrared Survey Telescope for Astronomy VIRCAM |