UGC 695
| Galaxie UGC 695 | |
|---|---|
 (c) Credit: ESA/Hubble & NASA, J. Dalcanton, Dark Energy Survey/DOE/FNAL/DECam/CTIO/NOIRLab/NSF/AURA, CC BY 4.0 | |
| Aufnahme mithilfe des Hubble-Weltraumteleskops | |
| AladinLite | |
| Sternbild | Walfisch |
| Position Äquinoktium: J2000.0, Epoche: J2000.0 | |
| Rektaszension | 01h 07m 46,4s [1] |
| Deklination | +01° 03′ 49″ [1] |
| Erscheinungsbild | |
| Morphologischer Typ | Sdm[2] |
| Helligkeit (B-Band) | 14,91 mag[1] |
| Winkelausdehnung | 1,1′ × 0,9′ |
| Physikalische Daten | |
| Rotverschiebung | 0.002152 ± 0.000006[1] |
| Radialgeschwindigkeit | (645 ± 2) km/s[1] |
| Hubbledistanz H0 = 73 km/(s • Mpc) | (32 ± 2) · 106 Lj (9,85 ± 0,69) Mpc [1] |
| Geschichte | |
| Katalogbezeichnungen | |
| UGC 695 • PGC 4013 • CGCG 385-002 • MCG +00-04-003 • | |
UGC 695 ist eine leuchtschwache Spiralgalaxie im Sternbild Cetus. Sie ist rund 32 Millionen Lichtjahre von der Milchstraße entfernt. Diese Art von Galaxien sind so lichtschwach, dass ihre Helligkeit geringer ist als die Hintergrundhelligkeit der Erdatmosphäre, was ihre Beobachtung erschwert, welche das Ergebnis der relativ geringen Anzahl von Sternen und Staubwolken ist. Des Weiteren sind die Sterne über ein relativ großes Gebiet verteilt.
Weblinks
Einzelnachweise
Auf dieser Seite verwendete Medien
Potw1936a.jpg
(c) Credit: ESA/Hubble & NASA, J. Dalcanton, Dark Energy Survey/DOE/FNAL/DECam/CTIO/NOIRLab/NSF/AURA, CC BY 4.0
This image, taken with the NASA/ESA Hubble Space Telescope, focuses on an object named UGC 695, which is located 30 million light-years away within the constellation Cetus (The Sea Monster), also known as The Whale. UGC 695 is a low-surface-brightness (LSB) galaxy. These galaxies are so faint that their brightness is less than the background brightness of Earth’s atmosphere, which makes them tricky to observe. This low brightness is the result of the relatively small number of stars within them — most of the baryonic matter in these galaxies exists in the form of huge clouds of gas and dust. The stars are also distributed over a relatively large area.LSB galaxies, like dwarf galaxies, have a high fraction of dark matter relative to the number of stars they contain. Astronomers still debate about how LSB galaxies formed in the first place.
(c) Credit: ESA/Hubble & NASA, J. Dalcanton, Dark Energy Survey/DOE/FNAL/DECam/CTIO/NOIRLab/NSF/AURA, CC BY 4.0
This image, taken with the NASA/ESA Hubble Space Telescope, focuses on an object named UGC 695, which is located 30 million light-years away within the constellation Cetus (The Sea Monster), also known as The Whale. UGC 695 is a low-surface-brightness (LSB) galaxy. These galaxies are so faint that their brightness is less than the background brightness of Earth’s atmosphere, which makes them tricky to observe. This low brightness is the result of the relatively small number of stars within them — most of the baryonic matter in these galaxies exists in the form of huge clouds of gas and dust. The stars are also distributed over a relatively large area.LSB galaxies, like dwarf galaxies, have a high fraction of dark matter relative to the number of stars they contain. Astronomers still debate about how LSB galaxies formed in the first place.
Coordinates Position (RA): 1 7 46.45 Position (Dec): 1° 3' 49.46" Field of view: 2.06 x 1.32 arcminutes Orientation: North is 123.6° right of vertical
Colours & filters Band Wavelength Telescope Optical B 438 nm Hubble Space Telescope WFC3 Optical V 555 nm Hubble Space Telescope WFC3 Optical I 814 nm Hubble Space Telescope WFC3.