Hubble image archive
The Helix Nebula: a Gaseous Envelope Expelled By a Dying Star
This composite image is a view of the colorful Helix Nebula taken with the Advanced Camera for Surveys aboard NASA's Hubble Space Telescope and the Mosaic II Camera on the 4-meter telescope at Cerro Tololo Inter-American Observatory in Chile. The object is so large that both tele...
- Date
- Jan 1, 2004
- Mission
- Hubble Space Telescope
- Archive ID
- hubblesite-images-2004-32-1608-image
This composite image is a view of the colorful Helix Nebula taken with the Advanced Camera for Surveys aboard NASA's Hubble Space Telescope and the Mosaic II Camera on the 4-meter telescope at Cerro Tololo Inter-American Observatory in Chile. The object is so large that both telescopes were needed to capture a complete view. The Helix is a planetary nebula, the glowing gaseous envelope expelled by a dying, sun-like star. The Helix resembles a simple doughnut as seen from Earth. But looks can be deceiving. New evidence suggests that the Helix consists of two gaseous disks nearly perpendicular to each other.
One possible scenario for the Helix's complex structure is that the dying star has a companion star. One disk may be perpendicular to the dying star's spin axis, while the other may lie in the orbital plane of the two stars. The Helix, located 690 light-years away, is one of the closest planetary nebulas to Earth.
The Hubble images were taken on November 19, 2002; the Cerro Tololo images on Sept. 17-18, 2003.
Credits
NASA, ESA, C.R. O'Dell (Vanderbilt University), M. Meixner and P. McCullough (STScI)Image Details
| About The Object | |
|---|---|
| Object Name | Helix Nebula, NGC 7293 |
| Object Description | Planetary Nebula |
| R.A. Position | 22h 29m 48.19s |
| Dec. Position | -20° 49' 25.99" |
| Constellation | Aquarius |
| Distance | About 690 light-years (213 parsecs) |
| Dimensions | The image is roughly 287 arcminutes (5.6 light-years or 1.7 parsecs) across. |
| About The Data | |
| Data Description | The HST data are from proposal . Processed images may be obtained from the Helix MAST web site. The Hubble Helix Team includes: M. Meixner, H.E. Bond, G. Chapman (STScI), Y.-H. Chu (U. Illinois, Urbana-Champaign), P. Cox (Institut d'Astrophysique Spatiale, France), W. Crothers, L.M. Frattare, R.Gilliland (STScI), M. Guerrero R. Gruendl (U. Illinois, Urbana-Champaign), F. Hamilton, (STScI), R.Hook (STScI/ESO), P. Huggins (New York Univ.), I. Jordan, C.D. Keyes, A. Koekemoer (STScI), K.Kwitter (Williams College), Z.G. Levay, P.R. McCullough, M. Mutchler, K. Noll (STScI), C.R. O'Dell (Vanderbilt University), N. Panagia, M. Reinhart, M. Robberto, K. Sahu, D. Soderblom, L. Stanghellini, C. Tyler, J. Valenti, A. Welty, R. Williams (STScI). The CTIO data were taken by C.R. O'Dell (Vanderbilt University) and L.M. Frattare (STScI). The science team includes C.R. O'Dell (Vanderbilt University), P.R. McCullough and M. Meixner (STScI). |
| Instrument | HST>ACS and CTIO>Mosaic II |
| Exposure Dates | November 19, 2002, Exposure Time: 4.5 hours (ACS); September 17-18, 2003, Exposure Time: 10 minutes (Mosaic II) |
| Filters | ACS: F502N ([O III]) and F658N (H-alpha) Mosaic II: c6009 (H-alpha) and kc6014 ([O III]) |
| About The Image | |
| Color Info | Blue: F502N ([O III]) Green: c6009 (H-alpha) and kc6014 ([O III]) Red: F658N (H-alpha) |
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Image and source material are credited to the official mission archive linked below.
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