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Collection:
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NASA Spitzer Space Telescope Collection
Collection
NASA Spitzer Space Telescope Collection
Collection
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Title:
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Luminous Blue Variable: Destined To Be a Supernova?
Title
Luminous Blue Variable: Destined To Be a Supernova?
Title
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Description:
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A Luminous Blue Variable star (inset) in our galaxy, named HD168625, surrounded by a bipolar nebula that is similar to the one around SN1987A. SN1987A was a supernova that exploded in 1987 in the Large Magellanic Cloud, and was the nearest supernova in about 400 years.
The diagram explains the bipolar nebula around HD168625, which has a geometry that makes it a near twin of the famous nebula around SN1987A. Rings near the equator are sometimes seen around stars that shed mass from their surfaces, but the larger rings above the poles are very rare. Tipped toward Earth and illuminated by the star, the rings look like ellipses in images taken with NASA's Spitzer Space Telescope.
The image was taken in 2004 by the Infrared Array Camera (IRAC) on NASA's Spitzer Space Telescope at wavelengths between 3.6 and 8 microns. The massive star at the center, which lies within the constellation Sagittarius, is about 7,200 light-years from Earth.
Description
A Luminous Blue Variable star (inset) in our galaxy, named HD168625, surrounded by a bipolar nebula that is similar to the one around SN1987A. SN1987A was a supernova that exploded in 1987 in the Large Magellanic Cloud, and was the nearest supernova in about 400 years.
The diagram explains the bipolar nebula around HD168625, which has a geometry that makes it a near twin of the famous nebula around SN1987A. Rings near the equator are sometimes seen around stars that shed mass from their surfaces, but the larger rings above the poles are very rare. Tipped toward Earth and illuminated by the star, the rings look like ellipses in images taken with NASA's Spitzer Space Telescope.
The image was taken in 2004 by the Infrared Array Camera (IRAC) on NASA's Spitzer Space Telescope at wavelengths between 3.6 and 8 microns. The massive star at the center, which lies within the constellation Sagittarius, is about 7,200 light-years from Earth.
Description
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Release Date:
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2007/01/09
Release_Date
2007/01/09
Release Date
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Release Credit:
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NASA/JPL-Caltech/N. Smith (UC Berkeley)
Release_Credit
NASA/JPL-Caltech/N. Smith (UC Berkeley)
Release Credit
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Image Credit:
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NASA/JPL-Caltech/N. Smith (UC Berkeley)
Image_Credit
NASA/JPL-Caltech/N. Smith (UC Berkeley)
Image Credit
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Object name:
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HD168625
Object_name
HD168625
Object name
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Object type:
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nebula around Luminous Blue Variable star
Object_type
nebula around Luminous Blue Variable star
Object type
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Position (J2000):
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*RA: *18h21m19.55s *Dec: *-16d22m26.10s
Position_(J2000)
*RA: *18h21m19.55s *Dec: *-16d22m26.10s
Position (J2000)
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Distance:
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2.2 kpc
Distance
2.2 kpc
Distance
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Constellation:
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Sagittarius
Constellation
Sagittarius
Constellation
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Wavelength:
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3.6 (blue), 4.5 (green), 8.0 (red) microns
Wavelength
3.6 (blue), 4.5 (green), 8.0 (red) microns
Wavelength
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Image scale:
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3.6 x 3.6 arcmin
Image_scale
3.6 x 3.6 arcmin
Image scale
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Instrument:
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IRAC
Instrument
IRAC
Instrument
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Exposure Date:
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5-6 Oct. 2004
Exposure_Date
5-6 Oct. 2004
Exposure Date
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Exposure Time:
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2.4 seconds per exposure
Exposure_Time
2.4 seconds per exposure
Exposure Time
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Orientation:
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North is 61.9 deg CW from up
Orientation
North is 61.9 deg CW from up
Orientation
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Magnitude:
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8.4 (V)
Magnitude
8.4 (V)
Magnitude
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note:
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*IRAC image of HD168625* Screen-Resolution (450x450): JPEG [ http://ipac.jpl.nas…sig07-003a_small.jpg ] High-Resolution (720x720): JPEG | Mac TIFF | PC TIFF Credit: NASA/JPL-Caltech/N. Smith (UC Berkeley)
note
*IRAC image of HD168625* Screen-Resolution (450x450): JPEG [ http://ipac.jpl.nas…sig07-003a_small.jpg ] High-Resolution (720x720): JPEG | Mac TIFF | PC TIFF Credit: NASA/JPL-Caltech/N. Smith (UC Berkeley) note
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note:
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*Diagram without image of HD168625* Screen-Resolution (450x315): JPEG [ http://ipac.jpl.nas…sig07-003b_small.jpg ] High-Resolution (2642x1852): JPEG | Mac TIFF | PC TIFF Credit: NASA/JPL-Caltech/T. Pyle (SSC)
note
*Diagram without image of HD168625* Screen-Resolution (450x315): JPEG [ http://ipac.jpl.nas…sig07-003b_small.jpg ] High-Resolution (2642x1852): JPEG | Mac TIFF | PC TIFF Credit: NASA/JPL-Caltech/T. Pyle (SSC) note
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facet_what:
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Spitzer Space Telescope
facet_what
Spitzer Space Telescope
facet_what
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facet_what:
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Earth
facet_what
Earth
facet_what
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facet_what:
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Sagittarius
facet_what
Sagittarius
facet_what
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facet_what:
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supernova
facet_what
supernova
facet_what
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facet_what:
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Infrared Array Camera (IRAC)
facet_what
Infrared Array Camera (IRAC)
facet_what
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facet_where:
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Large Magellanic Cloud
facet_where
Large Magellanic Cloud
facet_where
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facet_where:
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Jet Propulsion Laboratory (JPL)
facet_where
Jet Propulsion Laboratory (JPL)
facet_where
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facet_where:
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Washington, D.C.
facet_where
Washington, D.C.
facet_where
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facet_where:
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Stennis Space Center (SSC)
facet_where
Stennis Space Center (SSC)
facet_where
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facet_when:
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1987
facet_when
1987
facet_when
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facet_when:
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2004
facet_when
2004
facet_when
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facet_when_year:
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2004
facet_when_year
2004
facet_when_year
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facet_when_year:
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1987
facet_when_year
1987
facet_when_year
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Image #:
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sig07-003
Image_#
sig07-003
Image #
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original url:
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original_url
original url
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UID:
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SPD-SPITZ-sig07-003
UID
SPD-SPITZ-sig07-003
UID
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