10 Jun 1999

The newly found massive newborn stars are in one of our satellite galaxies, the Large Magellanic Cloud (LMC), 170 000 light-years away - right on our cosmic backyard. The Hubble image shows a view of a turbulent cauldron of starbirth, unromantically called N159. Fierce stellar winds from the hot newborn massive stars sculpt ridges, arcs and filaments in the vast cloud, which is over 150 light-years across. This is the clearest image ever obtained of this region.

Seen for the first time is the butterfly-shaped or 'Papillon' (French for butterfly) nebula, buried in the centre of the maelstrom of glowing gases and dark dust. The unprecedented details of the structure of the Papillon, itself less than 2 light-years in size (about 1/2000th of a degree in the sky), are seen in the inset.

This bipolar shape might be explained by the outflow of gas from the massive star (over 10 times the mass of our Sun) hidden in the central absorption zone. Such stars are so hot and bright that the pressure created by their sunlight halts the infall of gas and directs it away from the star in two opposite directions. This mechanism is not fully understood, but presumable the outflow is constrained around the star's equator and directed to escape along the star's rotation axis.

This observation is part of a search for young massive stars in the LMC. This buttefly-shaped nebula is considered to be a rare class of compact 'blob' around newborn, massive stars. The red in this true-colour image comes from the emission of hydrogen and the yellow from hotter oxygen gas. The picture was taken on 5 September 1998 with the Wide Field Planetary Camera 2.

(*) The team of European astronomers:

Principal investigator:

Dr. Mohammad Heydari-Malayeri
Observatoire de Paris 61, Avenue de l'Observatoire
F-75014 Paris, France.
phone: +33.1.4051.2076
fax: +33.1.4051.2002
Mohammad.Heydari-Malayeriobspm.fr

Co-investigators:

Dr. Michael R. Rosa
Space Telescope European Coordinating Facility
c/o European Southern Observatory
Karl-Schwarschild-Str. 2
D-85748 Garching bei M|nchen, Germany
phone: +49.89.32006.241
fax +49-89.32006.480
mrosaeso.org

Dr. Hans Zinnecker
Astrophysik Institute-Potsdam University
an d Sternwarte 16
D 14482 Potsdam, Germany
phone: +49.331.749.9347
fax: +49.331.749.9267
hzinneckeraip.de

Dr. Lise Deharveng
Observatoire de Marseille
2 Pl Le Verrier
F 13248 Marseille Cdx 04, France
phone: +33.4.9504.4122
fax: +33.4.9162.1190
deharvengobservatoire.cnrs-mrs.fr

Dr. Vassilis Charmandaris
Observatoire de Paris
61, Avenue de l'Observatoire
F-75014 Paris, France.
phone: +33.1.4051.2137
fax: +33.1.4051.2002
Vassilis.Charmandarisobspm.fr

For more information, please contact:
ESA Public Relations Division
Tel : +33.1.53.69.7155
Fax : +33.1.53.69.7690

Space Telescope Science Institute:
Carol Christian
Tel : +1.410.338.4764
Carolcstsci.edu

Ray Villard
Tel : +1.410.338.4514
VILLARDstsci.edu

Cheryl Gundy
Tel : +1.410.338.4707
GUNDYstsci.edu