A Dead Star’s Shroud

Noirlab_iotw2215a_1024

noirlab_iotw2215a April 13th, 2022

Credit: KPNO/NOIRLab/NSF/AURAImage processing: T.A. Rector (University of Alaska Anchorage/NSF’s NOIRLab), M. Zamani (NSF’s NOIRLab) & D. de Martin (NSF’s NOIRLab)

This image, which looks a little like an enormous bubble in space, features a planetary nebula known as EGB 6. It was imaged by the Nicholas U. Mayall 4-meter Telescope at Kitt Peak National Observatory (KPNO), a Program of NSF’s NOIRLab. Planetary nebulae, notoriously, have nothing to do with planets. They form during the dying millennia of intermediate-mass stars, stars with masses between one and eight times the mass of the Sun. “Dying millennia” might sound like a very long time, but compared to the overall lifespan of a star, planetary nebulae are extremely short-lived. Towards the end of their life cycle, intermediate-mass stars enter the red giant phase, during which fusion reactions temporarily reignite in a dying star’s core. Layers of gas, shed or ejected during the red giant phase, absorb vast amounts of energy and create the gorgeous phenomena known as planetary nebulae. The dying millenia only last about 20,000 years, a mere blink of an eye when you consider that intermediate-mass stars shine steadily for between 30 million to 10 billion years (depending on their mass) before they die.

Provider: NOIRLab

Image Source: https://noirlab.edu/public/images/iotw2215a/

Curator: NSF's NOIRLab, Tucson, AZ, USA

Image Use Policy: Creative Commons Attribution 4.0 International License

Image Details

Image Type
Observation
Object Name
EGB 6
Noirlab_iotw2215a_128
 

Position Details

Position (ICRS)
RA = 9h 53m 1.9s
DEC = 13° 44’ 10.9”
Orientation
North is 90.1° CCW
Field of View
30.5 x 30.0 arcminutes
Constellation
Leo

Color Mapping

  Telescope Spectral Band Wavelength
Cyan KPNO-4m (Mosaic I) Optical (O III) 499.0 nm
Orange KPNO-4m (Mosaic I) Optical (H-alpha) 656.0 nm
Spectrum_base
Cyan
Orange
Noirlab_iotw2215a_1280
×
ID
iotw2215a
Subject Category
Subject Name
EGB 6
Credits
KPNO/NOIRLab/NSF/AURAImage processing: T.A. Rector (University of Alaska Anchorage/NSF’s NOIRLab), M. Zamani (NSF’s NOIRLab) & D. de Martin (NSF’s NOIRLab)
Release Date
2022-04-13T12:00:00
Lightyears
Redshift
Reference Url
https://noirlab.edu/public/images/iotw2215a/
Type
Observation
Image Quality
Distance Notes
Facility
Nicholas U. Mayall 4-meter Telescope, Nicholas U. Mayall 4-meter Telescope
Instrument
Mosaic I, Mosaic I
Color Assignment
Cyan, Orange
Band
Optical, Optical
Bandpass
O III, H-alpha
Central Wavelength
499, 656
Start Time
Integration Time
Dataset ID
None, None
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
148.258124467, 13.7363710744
Reference Dimension
7321.0, 7209.0
Reference Pixel
3660.5, 3604.5
Scale
-6.94009122354e-05, 6.94009122354e-05
Rotation
90.060000000000244
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
Creator (Curator)
NSF's NOIRLab
URL
https://noirlab.edu
Name
Email
Telephone
Address
950 North Cherry Ave.
City
Tucson
State/Province
AZ
Postal Code
85719
Country
USA
Rights
Creative Commons Attribution 4.0 International License
Publisher
NSF's NOIRLab
Publisher ID
noirlab
Resource ID
iotw2215a
Metadata Date
2022-03-05T00:09:42+01:00
Metadata Version
1.1
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Detailed color mapping information coming soon...

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There is no distance meta data in this image.