Dosya:NGC1705 - HST - Potw2205a.jpg

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English: Hubble Revisits a Galactic Oddball

The dwarf galaxy NGC 1705 is featured in this image from the NASA/ESA Hubble Space Telescope. This diminutive galaxy lies in the southern constellation Pictor, and is approximately 17 million light-years from Earth. NGC 1705 is a cosmic oddball — it is small, irregularly shaped, and has recently undergone a spate of star formation known as a starburst.

Despite these eccentricities, NGC 1705 and other dwarf irregular galaxies like it can provide valuable insights into the overall evolution of galaxies. Dwarf irregular galaxies tend to contain few elements other than hydrogen or helium, and are considered to be similar to the earliest galaxies that populated the Universe.

The data shown in this image come from a series of observations designed to unveil the interplay between stars, star clusters, and ionised gas in nearby star-forming galaxies. By observing a specific wavelength of light known as H-alpha with Hubble’s Wide Field Camera 3, astronomers aimed to discover thousands of emission nebulae — regions created when hot, young stars bathe the clouds of gas surrounding them in ultraviolet light, causing them to glow.

This is not the first time that NGC 1705 has been imaged by Hubble — astronomers peered into the heart of the galaxy in 1999 using Hubble’s workhorse camera at the time, the Wide Field Planetary Camera 2. This instrument was replaced with the Wide Field Camera 3 during the fifth and final Space Shuttle mission to Hubble in 2009, and the newer instrument has provided a richer and far more detailed portrait of NGC 1705 than the 1999 observation.

Credit:

ESA/Hubble & NASA, R. Chandar

Coordinates
Position (RA):  	4 54 13.95
Position (Dec): 	-53° 21' 40.35"
Field of view:  	2.59 x 1.45 arcminutes
Orientation:    	North is 47.0° left of vertical

Colours & filters Band	Wavelength	Telescope
Ultraviolet UV  	275 nm	Hubble Space Telescope WFC3
Optical B       	438 nm	Hubble Space Telescope WFC3
Optical U        	336 nm	Hubble Space Telescope WFC3
Optical Strömgren y	547 nm	Hubble Space Telescope WFC3
Optical V       	555 nm	Hubble Space Telescope WFC3
Optical I       	814 nm	Hubble Space Telescope WFC3
Optical H-alpha + N II	657 nm	Hubble Space Telescope WFC3

.

Tarih

31 January 2022, 06:00 (released)

Kaynak

https://esahubble.org/images/potw2205a/

Yazar

Credit:

ESA/Hubble & NASA, R. Chandar

İzin
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atıf

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Atıf:

Credit: ESA/Hubble & NASA, R. Chandar

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güncel	16.56, 31 Ocak 2022		3.919 × 2.192 (3,79 MB)	Fabian RRRR	== {{int:filedesc}} == {{Information \|description={{en\|1=''Hubble Revisits a Galactic Oddball The dwarf galaxy NGC 1705 is featured in this image from the NASA/ESA Hubble Space Telescope. This diminutive galaxy lies in the southern constellation Pictor, and is approximately 17 million light-years from Earth. NGC 1705 is a cosmic oddball — it is small, irregularly shaped, and has recently undergone a spate of star formation known as a starburst. Despite these eccentricities, NGC 1705 and o...

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NGC 1705

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Bu dosyada, muhtemelen fotoğraf makinesi ya da tarayıcı tarafından eklenmiş ek bilgiler mevcuttur. Eğer dosyada sonradan değişiklik yapıldıysa, bazı bilgiler yeni değişikliğe göre eski kalmış olabilir.

Kaynak	ESA/Hubble
Katkı/Sağlayıcı	ESA/Hubble & NASA, R. Chandar
Kısa başlık	Hubble Revisits a Galactic Oddball
Resim başlığı	The dwarf galaxy NGC 1705 is featured in this image from the NASA/ESA Hubble Space Telescope. This diminutive galaxy lies in the southern constellation Pictor, and is approximately 17 million light-years from Earth. NGC 1705 is a cosmic oddball— it is small, irregularly shaped, and has recently undergone a spate of star formation known as a starburst. Despite these eccentricities, NGC 1705 and other dwarf irregular galaxies like it can provide valuable insights into the overall evolution of galaxies. Dwarf irregular galaxies tend to contain few elements other than hydrogen or helium, and are considered to be similar to the earliest galaxies that populated the Universe. The data shown in this image come from a series of observations designed to unveil the interplay between stars, star clusters, and ionised gas in nearby star-forming galaxies. By observing a specific wavelength of light known as H-alpha with Hubble’s Wide Field Camera 3, astronomers aimed to discover thousands of emission nebulae — regions created when hot, young stars bathe the clouds of gas surrounding them in ultraviolet light, causing them to glow. This is not the first time that NGC 1705 has been imaged by Hubble — astronomers peered into the heart of the galaxy in 1999 using Hubble’s workhorse camera at the time, the Wide Field Planetary Camera 2. This instrument was replaced with the Wide Field Camera 3 during the fifth and final Space Shuttle mission to Hubble in 2009, and the newer instrument has provided a richer and far more detailed portrait of NGC 1705 than the 1999 observation.
Kullanım şartları	Creative Commons Attribution 4.0 International License
Verinin ilk yaratılma zamanı	06.00, 31 Ocak 2022
Kullanılan yazılım	Adobe Photoshop 23.0 (Windows)
Dosya değişiklik tarihi ve zamanı	13.28, 18 Ocak 2022
Dijitalleştirme zamanı	13.05, 5 Ocak 2022
Üst veri son değişim tarihi	06.28, 18 Ocak 2022
Özgün belgenin benzersiz kimliği	xmp.did:3ef2d620-2b46-774f-8246-e6bfc9474291
Anahtar kelimeler	NGC 1705
İletişim bilgileri	https://esahubble.org ESA Office, Space Telescope Science Institute, 3700 San Martin Dr Baltimore, MD, 21218 United States
IIM sürümü	4

Dosya:NGC1705 - HST - Potw2205a.jpg

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