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IR Compendium: M87


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Table of Contents


Basic Information


M87 is probably the most well studied active galaxy. Spectroscopy in the mid infrared can be used to trace the narrow line region via measurements of high excitation lines such as those of Si, Ne, Mg, Fe and O. In the mid IR images, observers can see the prominent jet originating from the galaxy. Because M87 is an active galaxy, its spectra from 6 to 12 microns lacks any evidence of the PAH features seen in galaxies with cool dust.

Infrared Fluxes

Wavelength (microns) Flux (Janskys) Reference
1.235 3.27 Jarrett et al, 2003, AJ, 125, 525.
1.662 3.81 Jarrett et al, 2003, AJ, 125, 525.
2.159 3.17 Jarrett et al, 2003, AJ, 125, 525.
10 3.00e-2 Rieke et al, 1978, ApJ, 220, 37.
10.5 6.00e-2 Rieke et al, 1972, ApJ, 176, 95.
12 2.19e-1 Golombek et al, 1988, AJ, 95, 26.
25 1.87e-1 Golombek et al, 1988, AJ, 95, 26.
60 5.46e-1 Golombek et al, 1988, AJ, 95, 26.
100 5.59e-1 Golombek et al, 1988, AJ, 95, 26.

Spectral Energy Distributions



This SED was created using the sensitivity and saturation values available in November 2004. The black dots are the object surface brightness calculated by assuming the fluxes listed above are uniformly distributed throughout the beam sizes quoted in the reference papers. The green and red lines are the respective sensitivity and saturation limits for each instrument. The sensitivity values used are for a 5 sigma detection of an extended source with a 500 second exposure.

Infrared images

Search NED for additional data on this object

DSS R band (Search the DSS)

2MASS K band (Search the 2MASS LArge Galaxy Atlas)

ISO-CAM 6.7 microns (Search the ISO archive)

5 degree IRAS 12 micron image centered on M87 ( Retrieve IRAS images using OASIS)

ISO-CAM 12 microns (Search the ISO archive)

5 degree IRAS 100 micron image centered on M87 ( Retrieve IRAS images using OASIS)

Infrared Spectra

click image for full 2 to 12 micron spectra with ISO-PHT (Search the ISO archive)

Spitzer Observations

Further reading


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This file was last modified on Tue Oct 3 15:56:22 2006.

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