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Results for your query: docsPerPage=100;f182-subject=GalaxyThu, 01 Jan 1970 12:00:00 GMTHST Center of M31.
http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/M31-center-HST/M31-center-HST.dc.xml
This Hubble Space Telescope image centers on the 100-million-solar-mass black hole at the hub of our neighboring spiral galaxy M31, the Andromeda Galaxy. It is one of the few galaxies outside of the Milky Way that is visible to the naked eye. This is the sharpest visible-light image ever made of the nucleus of an external galaxy.http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/M31-center-HST/M31-center-HST.dc.xmlThu, 01 Jan 1970 12:00:00 GMTCosmic Origins Spectrograph Average Spectrum of 22 AGNs (Active Galactic Nuclei).
http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/apj430279f6_hr/apj430279f6_hr.dc.xml
The spectra were shifted to appear as if they were not redshifted before being averaged. All the objects have spectra that look like quasi-stellar objects, but some are of low enough luminosity that the host galaxy is visible and has a name. The main features of the spectrum are as follows: a purple/blue line drawn through the spectrum is the "continuum," mostly due to the AGN, a continuous glow caused by a very hot gas in a strong magnetic field; a red line represents the fitted spectrum of emission lines, thought to arise in a disk that surrounds the central black hole of the AGN. (These are most clear at the right end.) The ions that are seen in emission are labelled: N V, C IV, He II etc. The Roman numeral is the charge of the ion plus one: N V is four-times ionized oxygen, meaning that four electrons have been stripped off the atom. The ion has a net charge of positive four. The black line traces the actual data. Below about 950 Å, neutral hydrogen absorption lines from the intergalactic medium exist in ...http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/apj430279f6_hr/apj430279f6_hr.dc.xmlThu, 01 Jan 1970 12:00:00 GMTM100 Galactic Nucleus.
http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/m100after/m100after.dc.xml
This image was taken with Hubble's Wide Field and Planetary Camera 2, installed to correct Hubble's optics. The difference in clarity is dramatic and represents the realization of the anticipated quality of images from a space-based, optical telescope.http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/m100after/m100after.dc.xmlThu, 01 Jan 1970 12:00:00 GMTM100 Galactic Nucleus.
http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/m100before/m100before.dc.xml
This image was taken before the optics was fixed and demonstrates that the optical error generates images that are not much better than images taken with ground-based telescopes and were much less clear than expected. The picture is from the Wide Field and Planetary Camera 1.http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/m100before/m100before.dc.xmlThu, 01 Jan 1970 12:00:00 GMTM31 from Einstein.
http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/m31einstein/m31einstein.dc.xml
This picture taken by the Einstein Observatory points to the galactic center of M31 - the Andromeda Galaxy - the nearest spiral galaxy to our Milky Way galaxy. Using more than 150 observations carried out over 13 years by the Chandra X-ray Observatory, researchers in 2013 identified 26 black hole candidates, the largest number to date, in the Andromeda Galaxy.http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/m31einstein/m31einstein.dc.xmlThu, 01 Jan 1970 12:00:00 GMTMultiwavelength Milky Way.
http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/mwmw_8x10/mwmw_8x10.dc.xml
Imagine that you are looking up at the night sky and can see the arms of the Milky Way Galaxy bisecting the sky. The image of the sky labelled optical in this graphic is what you would see with your eyes. Now, observe the images of the same view of the Milky Way, but in through the lens of a telescope that sees in a different wavelength than our eyes. The amount and type of information, or data, available in each waveband varies as illustrated in this graphic. You can see why it is so important that we look at the universe through eyes that see wavebands other than optical light.http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/mwmw_8x10/mwmw_8x10.dc.xmlThu, 01 Jan 1970 12:00:00 GMTFirst high-resolution details in gamma-ray burst host galaxy.
http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/grb980425/grb980425.dc.xml
The ESO 184-G82 galaxy has loose spiral arms with many bright regions where stars are forming. The inset shows an expanded view of one of the star-forming regions. The arrow shows the location the 1998 supernova explosion. This supernova was also a gamma ray source, showing supernova are the origin of some GRB's.http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/grb980425/grb980425.dc.xmlMon, 12 Jun 2000 12:00:00 GMT