Archivo de imágenes de Hubble
Disco de desechos planetarios que rodea la estrella enana amarilla HD 107146
This is a false-color view of a planetary debris disk encircling the star HD 107146, a yellow dwarf star very similar to our Sun, though it is much younger (between 30 and 250 million years old, compared to the almost 5 billion years age of the Sun). The star is 88 light-years aw...
- Fecha
- Jan 1, 2004
- Misión
- Hubble Space Telescope
- ID de archivo
- hubblesite-images-2004-33-1612-image
This is a false-color view of a planetary debris disk encircling the star HD 107146, a yellow dwarf star very similar to our Sun, though it is much younger (between 30 and 250 million years old, compared to the almost 5 billion years age of the Sun). The star is 88 light-years away from Earth. This is the only disk to have been imaged around a star so much like our own. The slight difference in brightness on one side of the disk is due to the fact that small dust particles scatter more light when they are between Earth and the star, rather than behind the star. This suggests that the bright side is closer to us. The disk is redder than the star whose light it reflects, indicating that it contains grains one two-thousandth of a millimeter in size (about 100 times smaller than household dust).
Our Sun is believed to have a ring of dust around it, lying just beyond the orbit of Neptune, although it is ten times narrower than the one around HD 107146. Our solar system also has between 1,000 and 10,000 times less dust. The size of the ring, its the thickness, and the amount of dust make it unlikely that HD 107146 will ever evolve into a system like our own. This is interesting, as it shows that the planetary systems around the same kind of stars may have very different evolutionary paths.
Credits
NASA, ESA, D.R. Ardila (JHU), D.A. Golimowski (JHU), J.E. Krist (STScI/JPL), M. Clampin (NASA/GSFC), J.P. Williams (UH/IfA), J.P. Blakeslee (JHU), H.C. Ford (JHU), G.F. Hartig (STScI), G.D. Illingworth (UCO-Lick) and the ACS Science TeamDetalles de la imagen
| About The Object | |
|---|---|
| Object Name | HD 107146 |
| Object Description | Spectral Type "G2V" Star with Debris Disk |
| R.A. Position | 20h 45m 9.53s |
| Dec. Position | -31° 20' 27.19" |
| Constellation | Coma Berenices |
| Distance | Approximately 88 light-years (27 parsecs) |
| About The Data | |
| Data Description | This image was created from HST data from the following proposal: - H.C. Ford (JHU), J. Krist (STScI), and M. Clampin (GSFC). Members of the science team include: J.E. Krist (STScI/JPL); D.R. Ardila (JHU); D.A. Golimowski (JHU); M. Clampin (NASA/Goddard); H.C. Ford (JHU); G.D. Illingworth (UCO-Lick); G.F. Hartig (STScI) and the ACS Science Team. |
| Instrument | HST>ACS/HRC |
| Exposure Dates | June 5 - July 20, 2004, Exposure Time: 1.3 hours |
| Filters | F606W (V) and F814W (I) |
Descargas
Fuente
La imagen y el material de referencia se acreditan al archivo oficial de la misión enlazado a continuación.
Ver en NASA.gov