Archive for the ‘M81’ Category

M81 and its group: New images

July 24, 2008

[M81 composite, CXO/HST/SST/GALEX]

This composite NASA image of the spiral galaxy M81, located about 12 million light years away, includes X-ray data from the Chandra X-ray Observatory (blue), optical data from the Hubble Space Telescope (green), infrared data from the Spitzer Space Telescope (pink) and ultraviolet data from GALEX (purple). The inset shows a close-up of the Chandra image. The object at the center of M81 is considered to be a supermassive black hole that is about 70 million times more massive than the Sun.

Credit: X-ray: NASA/CXC/Wisconsin/D.Pooley & CfA/A.Zezas; Optical: NASA/ESA/CfA/A.Zezas; UV: NASA/JPL-Caltech/CfA/J.Huchra et al.; IR: NASA/JPL-Caltech/CfA

Chandra Press Release, June 18, 2008:

[M81 group, HST]

Nasa’s Hubble Space Telescope, as well as GALEX, were used to obtain deep images from the M81 group, and imaged a number of faint blue blobs, actually large young star clusters. These are aligned along bridges of matter between the galaxies M81, M82 and NGC 3077, and nicknamed Arp¬ís Loop.

Credit: NASA, ESA, and D. de Mello (Catholic University of America/GSFC)

STScI Press Release, January 8, 2008:

[M81 group, VLA]

Radio astronomers using the NRAO’s Very Large Array (VLA) of radi antennae have found a number of faint, hitherto unknown hydrogen clouds
in the M81 group.

NRAO Press Release, January 10, 2008:

SEDS M81 page:


Recent Images and News of Messier Objects

July 15, 2008

M4 (and NGC 6397) from Chandra; April 28, 2008:

M31 and M101 by Galex, February 21, 2008:

M81 from Chandra; June 18, 2008:

M81 group (in particular, Arp’s Loop), from Hubble; January 8, 2008:

M81 group with radio clouds, from NRAO; January 10, 2008:

M82 in X-rays by XMM Newton:

M83 by Galex; April 16, 2008:

M106 by Galex; April 28, 2008:

Various THINGS galaxies, including M51, M63, M74, M81 and several M81 group dwarfs, by NRAO; January 10, 2008:

M81: Hubble photo and Spitzer image

June 13, 2007

[Hubble Space Telescope Image of M81]
Hubble Space Telescope Image of M81

Hubble Photographs Grand Design Spiral Galaxy M81

Hubble Space Telescope has taken the sharpest image to date of spiral galaxy M81, showing details like individual bright stars. This image was created from data obtained with HST’s ACS camera between 2004 and 2006. This is a color composite of images taken in blue, visible and infrared light.

[Multiwavelengths M81, SST/HST/GALEX]

Multiwavelengths M81, composed from above Hubble image, Spitzer infrared, and GALEX UV image.

Hubble Press Release (May 28, 2007):

ESA Press Release (May 28, 2007):

Hubble Heritage Feature (May 28, 2007):

Spitzer Press Release (May 30, 2007):

SEDS M81 page:

M81: GALEX image of M81

May 23, 2007

[GALEX image of M81]

Credit: NASA/JPL-Caltech/J. Huchra (Harvard-Smithsonian CfA)

The Galaxy Evolution Explorer (GALEX) satellite has been used to obtain this spectacular false-color ultra-violet image of spiral galaxy M81, together with its companion Holmberg IX.

GALEX Press Release (May 1, 2007):

M81 and Holmberg IX page at SEDS: