Imposter or the Real Deal?

Esahubble_potw2001a_1024

esahubble_potw2001a January 6th, 2020

Credit: ESA/Hubble & NASA, A. Filippenko

This Picture of the Week, taken by the NASA/ESA Hubble Space Telescope, shows a close-up view of a galaxy named NGC 2770. NGC 2770 is intriguing, as over time it has hosted four different observed supernovae (not visible here). Supernovae form in a few different ways, but always involve a dying star. These stars become unbalanced, lose control, and explode violently, briefly shining as brightly as an entire galaxy before slowly fading away. One of the four supernovae observed within this galaxy, SN 2015bh, is especially interesting. This particular supernova initially had its identity called into question. When it was first discovered in 2015, astronomers classified SN 2015bh as a supernova imposter, believing it to be not an exploding star but simply an unpredictable outburst from a massive star in its final phase of life. Thankfully, astronomers eventually discovered the truth and the object was given its correct classification as a Type II supernova, resulting from the death of a star between eight and 50 times the mass of the Sun.

Provider: Hubble Space Telescope | ESA

Image Source: https://www.spacetelescope.org/images/potw2001a/

Curator: ESA/Hubble, Garching bei München, None, Germany

Image Use Policy: Creative Commons Attribution 4.0 International License

Image Details

Image Type
Observation
Object Name
NGC 2770
Subject - Local Universe
Galaxy > Type > Spiral
Esahubble_potw2001a_128
 

Position Details

Position (ICRS)
RA = 9h 9m 34.4s
DEC = 33° 7’ 19.3”
Orientation
North is 16.1° CW
Field of View
2.6 x 2.5 arcminutes
Constellation
Lynx

Color Mapping

  Telescope Spectral Band Wavelength
Red Hubble (WFC3) Optical (I) 814.0 nm
Green Hubble (WFC3) Optical (r) 625.0 nm
Blue Hubble (WFC3) Optical (V) 555.0 nm
Blue Hubble (WFC3) Optical (B) 438.0 nm
Spectrum_base
Red
Green
Blue
Blue
Esahubble_potw2001a_1280
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ID
potw2001a
Subject Category
C.5.1.1  
Subject Name
NGC 2770
Credits
ESA/Hubble & NASA, A. Filippenko
Release Date
2020-01-06T06:00:00
Lightyears
Redshift
Reference Url
https://www.spacetelescope.org/images/potw2001a/
Type
Observation
Image Quality
Distance Notes
Facility
Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope
Instrument
WFC3, WFC3, WFC3, WFC3
Color Assignment
Red, Green, Blue, Blue
Band
Optical, Optical, Optical, Optical
Bandpass
I, r, V, B
Central Wavelength
814, 625, 555, 438
Start Time
Integration Time
Dataset ID
None, None, None, None
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
137.393240343, 33.1220275066
Reference Dimension
4005.0, 3738.0
Reference Pixel
2002.5, 1869.0
Scale
-1.10208922422e-05, 1.10208922422e-05
Rotation
-16.08
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
Creator (Curator)
ESA/Hubble
URL
http://www.spacetelescope.org
Name
Email
Telephone
Address
Karl-Schwarzschild-Strasse 2
City
Garching bei München
State/Province
None
Postal Code
D-85748
Country
Germany
Rights
Creative Commons Attribution 4.0 International License
Publisher
ESA/Hubble
Publisher ID
esahubble
Resource ID
potw2001a
Metadata Date
2019-11-20T12:14:56+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.