Star on a Hubble diet

ACS HRC image close-up showing the two stars of Pismis 24-1. It was thought to have an incredibly large mass of 200 to 300 solar masses. New NASA/ESA Hubble measurements of the star, have, however, resolved Pismis 24-1 into two separate stars, and, in doing so, have "halved" its mass to around 100 solar masses.

Credit:

NASA, ESA and Jesœs Ma­z Apellÿniz (Instituto de astrof­sica de Andaluc­a, Spain). Acknowledgement: Davide De Martin (ESA/Hubble

)

About the Image

Id:heic0619d
Type:Observation
Release date:11 December 2006, 19:30
Related releases:heic0619
Size:1500 x 1500 px

About the Object

Name:Cl Pismis 24, Pismis 24, Pismis 24-1
Type:Milky Way : Star : Grouping : Cluster
Distance:8000 light years
Constellation:Scorpius
Category:Star Clusters

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Coordinates

Position (RA):17 24 43.49
Position (Dec):-34° 11' 57.03"
Field of view:0.05 x 0.05 arcminutes
Orientation:North is 171.9° left of vertical

Colours & filters

BandWavelengthTelescope
Optical
V
550 nm Hubble Space Telescope
ACS
Optical
Pseudogreen
Hubble Space Telescope
ACS
Optical
R
658 nm Hubble Space Telescope
ACS
Infrared
Z
850 nm Hubble Space Telescope
ACS

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