Sharpless 157 (WR 157)

Noirlab_noao-wr157_1024

noirlab_noao-wr157 June 30th, 2020

Credit: T.A. Rector (University of Alaska Anchorage) and H. Schweiker (WIYN and NOIRLab/NSF/AURA)

This image of Supernova 2002ic was taken at the Swope 1-meter telescope at Las Campanas Observatory in Chile on January 7, 2003. The supernova is the bright point of light in the center, at the intersection of two background galaxies. The host galaxy of the supernova is extremely faint and is not visible. A strong signal of hydrogen was detected in ground-based spectroscopic observations of the supernova, leading a team of astronomers in Chile and the U.S. to conclude that the source of this Type Ia supernova consisted of a white dwarf that suddenly exploded after gaining hydrogen gas blown off by its gravitational partner, a common asymptotic giant branch (AGB) star three to seven times as massive as the Sun. This is the first unambiguous detection of the progenitor of a Type Ia supernova. Four spectroscopic observations of SN2002ic were made using the Baade 6.5-meter and 2.5-meter Dupont telescopes at Las Campanas between November 2002 and January 2003.

Provider: NOIRLab

Image Source: https://noirlab.edu/public/images/noao-wr157/

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

Image Use Policy: Creative Commons Attribution 4.0 International License

Image Details

Image Type
Observation
Object Name
WR 157
Noirlab_noao-wr157_128
 

Position Details

Position (ICRS)
RA = 23h 16m 53.2s
DEC = 60° 42’ 56.0”
Orientation
North is 90.1° CCW
Field of View
31.1 x 19.9 arcminutes
Constellation
Cassiopeia

Color Mapping

  Telescope Spectral Band Wavelength
Green KPNO-4m (Mosaic I) Optical (Sll) 672.0 nm
Red KPNO-4m (Mosaic I) Optical (Ha) 656.0 nm
Blue KPNO-4m (Mosaic I) Optical (Olll) 499.0 nm
Spectrum_base
Green
Red
Blue
Noirlab_noao-wr157_1280
×
ID
noao-wr157
Subject Category
Subject Name
WR 157
Credits
T.A. Rector (University of Alaska Anchorage) and H. Schweiker (WIYN and NOIRLab/NSF/AURA)
Release Date
2020-06-30T21:53:16
Lightyears
Redshift
Reference Url
https://noirlab.edu/public/images/noao-wr157/
Type
Observation
Image Quality
Distance Notes
Facility
Nicholas U. Mayall 4-meter Telescope, Nicholas U. Mayall 4-meter Telescope, Nicholas U. Mayall 4-meter Telescope
Instrument
Mosaic I, Mosaic I, Mosaic I
Color Assignment
Green, Red, Blue
Band
Optical, Optical, Optical
Bandpass
Sll, Ha, Olll
Central Wavelength
672, 656, 499
Start Time
Integration Time
Dataset ID
None, None, None
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
349.221753173, 60.7155533989
Reference Dimension
7133.0, 4570.0
Reference Pixel
281.662622452, 913.85186768
Scale
-7.26925142076e-05, 7.26819664178e-05
Rotation
90.128138693542
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
noao-wr157
Metadata Date
2021-07-24T16:40:38.316619
Metadata Version
1.1
×

 

Detailed color mapping information coming soon...

×

There is no distance meta data in this image.