Datoteka:The beautiful side of IC 335.jpg
Prijeđi na navigaciju
Prijeđi na pretragu
Veličina ovog prikaza: 719 × 599 piksela. Druge rezolucije: 288 × 240 piksela | 576 × 480 piksela | 921 × 768 piksela | 1.229 × 1.024 piksela | 1.280 × 1.067 piksela.
Izvorna datoteka (1.280 × 1.067 piksela, veličina datoteke/fajla: 140 kB, MIME tip: image/jpeg)
Opis izmjene
| Opis |
English: This new NASA/ESA Hubble Space Telescope image shows the galaxy IC 335 in front of a backdrop of distant galaxies. IC 335 is part of a galaxy group containing three other galaxies, and located in the Fornax Galaxy Cluster 60 million light-years away. As seen in this image, the disc of IC 335 appears edge-on from the vantage point of Earth. This makes it harder for astronomers to classify it, as most of the characteristics of a galaxy’s morphology — the arms of a spiral or the bar across the centre — are only visible on its face. Still, the 45 000 light-year-long galaxy could be classified as an S0 type. These lenticular galaxies are an intermediate state in galaxy morphological classification schemes between true spiral and elliptical galaxies. They have a thin stellar disc and a bulge, like spiral galaxies, but in contrast to typical spiral galaxies they have used up most of the interstellar medium. Only a few new stars can be created out of the material that is left and the star formation rate is very low. Hence, the population of stars in S0 galaxies consists mainly of aging stars, very similar to the star population in elliptical galaxies. As S0 galaxies have only ill-defined spiral arms they are easily mistaken for elliptical galaxies if they are seen inclined face-on or edge-on as IC 335 here. And indeed, despite the morphological differences between S0 and elliptical class galaxies, they share a some common characteristics, like typical sizes and spectral features. Both classes are also early-type galaxies, as they are evolving passively. However, elliptical galaxies may be passively evolving when we observe them, but they had violent interactions with other galaxies in their past. Whereas S0 galaxies are either aging and fading spiral galaxies, which never had any interactions with other galaxies, or they are the aging result of a single merger between two spiral galaxies in the past. The exact nature of these galaxies is still a matter of debate. Links Structure and Formation of S0 and Spheroidal Galaxies Can Early Type Galaxies Evolve from Fading the Disks of Late Types? |
| Datum | |
| Izvor | http://spacetelescope.org/images/potw1451a/ |
| Autor | ESA/Hubble & NASA |
Licenciranje
  |
ESA/Hubble images, videos and web texts are released by the ESA under the Creative Commons Attribution 4.0 International license and may on a non-exclusive basis be reproduced without fee provided they are clearly and visibly credited. Detailed conditions are below; see the ESA copyright statement for full information. For images created by NASA or on the hubblesite.org website, or for ESA/Hubble images on the esahubble.org site before 2009, use the {{PD-Hubble}} tag.
Conditions:
Notes:
|
 |
Ova datoteka je dostupna pod licencom Creative Commons Autorstvo 4.0 Međunarodna.
Pripisivanje: ESA/Hubble
- Slobodno smijete:
- dijeliti – umnožavati, raspodjeljivati i prenositi djelo
- prerađivati – prilagođavati djelo
- Pod sljedećim uslovima:
- pripisivanje – Morate pripisati odgovarajuće autorske zasluge, osigurati link ka licenci i naznačiti jesu li napravljene izmjene. To možete uraditi na bilo koji razumni način, ali ne tako da se sugerira da davalac licence odobrava Vas ili Vašu upotrebu njegovog djela.
Historija datoteke
Kliknite na datum/vrijeme da biste vidjeli tadašnju verziju datoteke.
| Datum/vrijeme | Minijatura | Dimenzije | Korisnik | Komentar | |
|---|---|---|---|---|---|
| aktualna | 14:48, 25 decembar 2014 | | 1.280 × 1.067 (140 kB) | Jmencisom | User created page with UploadWizard |
Upotreba datoteke
Sljedeća stranica koristi ovu datoteku:
Globalna upotreba datoteke
Ovu datoteku upotrebljavaju i sljedeći projekti:
