Communiqué de presse, Août 2004:
Spitzer découvre des galaxies lointaines August 2004 Press Release: Spitzer Unveils Distant Galaxies |
Contenu de la page / Page Content |
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1- Communiqué de presse en français. |
2- Images et légendes du communiqué de presse en français. |
3- Text of the Press Release in English. |
4- Images and captions of the PR in English. |
5- Links. |
1- Communiqué de presse |
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Spitzer découvre des galaxies lointaines
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2- Images et légendes du communiqué de presse |
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Cliquer sur les images ou sur leur nom pour visualiser les images en haute résolution (attention à la taille des fichiers) |
Composite couleur du champ Lockman observe en infrarouge par Spitzer. Bleu: IRAC 3.6 microns. Vert: IRAC 4.5 microns. Rouge: IRAC 8.0 microns. Le champ de vue est un carre de 5 minutes d'arc de cote. Credit: University of Kent / University of Arizona / IAS, Orsay (H. Dole) / IRAC Team (J. Huang) LockmanHole_TC_IRAC124.jpg (250 kb) |
Composite couleur du champ Lockman observe en infrarouge par Spitzer. Bleu: IRAC 3.6 microns. Vert: IRAC 8.0 microns. Rouge: MIPS 24 microns. Le champ de vue est un carre de 5 minutes d'arc de cote. Credit: H. Dole (IAS, Orsay and Arizona) / J. Huang (SAO) / IRAC and MIPS teams. LockmanHole_TC_IRAC14_MIPS24.jpg (250 kb) |
Image multi longeurs d'onde du champ Lockman, en visible et infrarouge: B, V, R, 3.6 microns (IRAC/Spitzer), 8.0 microns (IRAC/Spitzer), 24 microns (MIPS/Spitzer). Credit: H. Dole (IAS and Arizona) / MIPS Team (Arizona) / IRAC Team. ERO_6wv.jpg (4.6Mb) |
Image multi longeurs d'onde du champ Lockman, en visible et infrarouge, avec en bas quelques galaxies indiquees. Images: B, V, R, 3.6 microns (IRAC/Spitzer), 8.0 microns (IRAC/Spitzer), 24 microns (MIPS/Spitzer). Cercle vert: galaxies detectees dans le submillimetriques et probablement primordiales. La source du bas est a un redshift de z=3.7. Cercle jaune: exemple de galaxie non detectee dans le domaine visible. Credit: H. Dole (IAS and Arizona) / MIPS Team (Arizona) / IRAC Team. ERO_6wv_2panels.jpg (8.9 Mb) |
Image d'une galaxie distante dans le domaine submillimetrique et infrarouge. A gauche: image SCUBA a 850 microns. A droite: image Spitzer IRAC a 3.6, 4.5 et 8.0 microns. Credit: S. Serjeant (University of Kent) Scuba_Spitzer_Steve.jpg (130 kb) |
Distribution spectrale d'energie de quelques galaxies detectees par Spitzer. La technique de redshift photometrique permet d'obtenir assez precisement le redshift de la galaxie. Les galaxies presentees ici se situent etre z=1.1 et z=2.5 (soit environ 9.5 a 11.5 milliards d'annees-lumiere). Credit: E. Le Floc'h (Arizona) et al. File: elefloch2004_sed_fig2.jpg (80 kb) |
3- Text of the Press Release in English |
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Spitzer Unveils Distant Galaxies
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4- Images and captions of the PR in English |
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Download all the images in a single zip file (14 Mb) Otherwise click on the small images to view the full resolution images. |
Color composite image of the Lockman Hole, made of IRAC 3.6 (blue), 4.5 (green) and 8.0 microns (red). The field of view has a size of 5 arcminutes by 5 arcminutes. Credit: University of Kent / University of Arizona / IAS, Orsay (H. Dole) / IRAC Team (J. Huang) LockmanHole_TC_IRAC124.jpg (250 kb) |
Color composite image of the Lockman field, made of IRAC 3.6 (blue), and 8.0 microns (green), and MIPS 24 microns (red). The field of view has a size of 5 arcminutes by 5 arcminutes. Credit: H. Dole (IAS and Arizona) / J. Huang (SAO) / IRAC and MIPS teams. LockmanHole_TC_IRAC14_MIPS24.jpg (250 kb) |
Multiwavelength image of the Lockman field, in the visible and in the infrared. B, V, R, 3.6 microns (IRAC/Spitzer), 8.0 microns (IRAC/Spitzer), 24 microns (MIPS/Spitzer). Credit: H. Dole (IAS and Arizona) / MIPS Team (Arizona) / IRAC Team. ERO_6wv.jpg (4.6Mb) |
Multiwavelength image of the Lockman field, in the visible and in the infrared, with some sources identifications. B, V, R, 3.6 microns (IRAC/Spitzer), 8.0 microns (IRAC/Spitzer), 24 microns (MIPS/Spitzer). Green Circle: galaxies detected in the submillimeter and likely primordial galaxies. The source in the bottom is at redshift z=3.7. Yellow Circle: example of galaxy not seen in the visible range. ERO_6wv_2panels.jpg (8.9 Mb) |
Submillimeter and infrared image of a distant galaxy. Left: SCUBA at 850 microns. Right: Spitzer IRAC at 3.6, 4.5 and 8.0 microns. Credit: S. Serjeant (University of Kent) Scuba_Spitzer_Steve.jpg (130 kb) |
Spectral Energy Distribution of selected galaxies detected by Spitzer, from redshifts 1.1 to 2.5 (about 9.5 to 11.5 billion light-years). Credit: E. Le Floc'h (Arizona) et al. File: elefloch2004_sed_fig2.jpg (80 kb) |
5- Links |
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MIPS Cosmological Surveys
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Hervé Dole.
Last modified: Fri Aug 13 17:07:10 MST 2004