M1 image More About M1 Nice Color Picture . ... M16 image More About M16 HST image . ... M31 image More About M31 Nice Color Picture . ... M42 image ; M43 image More About M42/43 Nice Color CCD Picture . M51 image More About M51 Color Image of M51 M51 Supernova . M57 image More About M57 Nice Color CCD Picture Very Deep M57 Image . ... M81 image More About M81 M81 Supernova Ultraviolet Image of M81 More about Ultraviolet Imaging . M82 image More About M82 M82 False Color M82 True Color . ...

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• The Galaxy Gallery Page 6: Comparative Morphology
• Galaxy Gallery Page IV: The Movies
• Fabry-Perot Images of Spiral Galaxies

STScI-PRC99-10 . ... Astronomers have used the NASA Hubble Space Telescope to produce an infrared "photo essay" of spiral galaxies. By penetrating the dust clouds swirling around the centers of these galaxies, the telescope’s infrared vision is offering fresh views of star birth. These six images, taken with the Near Infrared Camera and Multi-Object Spectrometer, showcase different views of spiral galaxies, from a face-on image of an entire galaxy to a close-up of a core. ... Gallery | ...

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• HST Image of the Whirlpool Galaxy Nucleus
• APOD: July 1, 1998 - NGC 1808: A Nearby Starburst Galaxy
• APOD: June 25, 1996 - A Star Forming Region in the LMC

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• The region around SMM J2135-0102 and the galaxy cluster MACS J2135-010217
• APEX view of the region around the Spiderweb Galaxy
• Wide-field view of the region around the Antennae Galaxies

... 2001 February 16 . Star Forming Region Hubble-X . ... Cataloged as Hubble-X , many skygazers find the appearance of this extragalactic star forming region reminiscent of the most famous stellar nursery in our own galaxy, the Orion Nebula . Hubble-X is intrinsically much brighter than Orion though, and at a distance of 1.6 million light-years it is about 1,000 times farther away. Hubble-X is also about 100 light-years across compared to 10 light-years for the Orion Nebula. ... About APOD | ...

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• APOD: 2009 October 9 - Starburst Galaxy IC 10
• APOD: 2011 February 19 - Spiral Galaxy NGC 2841 Close Up
• APOD: 2005 March 4 - NGC 1427A: Galaxy in Motion

... 13.11.2010 . ... About 100 thousand light-years across, the gorgeous island universe is well known to astronomers as a member of the Leo Triplet of galaxies. In M66, pronounced dust lanes and young, blue star clusters sweep along spiral arms dotted with the tell-tale glow of pink star forming regions. ... Publications with keywords: spiral galaxy - dust - Leo . Publications with words: spiral galaxy - dust - Leo . ... The Whirlpool Galaxy in Infrared Dust . ... Fireworks Galaxy NGC 6946 . ...

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• Spiral Galaxy NGC 2841 Close Up
• XWare > APOD

... January 8, 2007 . ... SENTINEL CORRESPONDENT . Astronomers at UC Santa Cruz have discovered a surprisingly massive halo of bright, old stars around our galactic neighbor Andromeda, pushing the outer limits of the galaxy to 1.5 million light years, and teaching them how spiral galaxies behave. ... Younger stars may be remnants of a galaxy devoured, but older stars could have formed with the birth of the galaxy. ... http://www.santacruzsentinel.com/archive/2007/January/08/local/stories/03local.htm . ...

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• The Incidence of Highly Obscured Star-forming Regions in SINGS Galaxies
• Dust disk around a black hole in galaxy NGC 7052
• Astronomy Magazine, July 1998

... Here some data observed on the 6m telescope with IFP installed in the OLD focal reducer are presented. ... Mkn 3: velocity field . ... NGC 5252: [OIII] image . ... NGC 5252 was observed 23 Feb. 1998 in the [OIII]5007 emission line with CCD TK1024 as detector. ... We observed the ionized gas velocity fields of the spiral galaxies with two purpose. ... Restored velocity field of NGC 157 in the reference frame rotating with the pattern speed overlaid on the Ha image of the galaxy . ... NGC 4100 . ...

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• My publications
• SCORPIO: IFP Gallery

Astronotes Armagh Planetarium's Stellar Blog! ... Stars . ... Starbursts are short-lived events, stars are forming so quickly that the reservoirs of interstellar gas from which stars are coalescing would be used up on a timescale much shorter than the age of the galaxy . ... Strong stellar winds from giant new stars in the starburst region combine with the blasts of supernovae to push a mighty flood of extremely hot gas, a ?superwind? from the galaxy thousands of light years into intergalactic space. ...

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• Ice Worlds at Armagh Planetarium | Astronotes
• Supernova in the Cigar Galaxy | Astronotes
• Kepler-11: a strange and crowded planetary system | Astronotes

... We have mapped the 21-cm absorption in the nuclear region of the starburst galaxy NGC 1808 using the VLA AnB-hybrid array with a resolution of approx. 5.2" (= 275 pc). ... The velocity center of the absorption changes from about +120 km/s relative to the systemic velocity in the NW to -145 km/s in the SE, following the rotation pattern in the outer regions of the galaxy. ... The gravitational mass required to explain this fast rotation in the center of NGC 1808 is a few times 10^9 solar masses. ...

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• The Nuclear Region: HI Absorption Measurements
• QUANTIFYING THE IONIZING FLUX ESCAPING FROM THE ULTRA-LUMINOUS H II REGIONS IN
• The Peculiar Spiral Galaxy NGC 1808

In order to measure the density of the Universe, it is necessary to sample a region that is larger than the scale on which the Universe becomes approximately homogeneous. ... When applied to clusters of galaxies we find a mass to luminosity ratio that implies a density of the Universe that is about 0.3 times the critical density. ... Thus the mass-to-muinosity ratio appears to vary with the size of the region measured, from 3 in the solar neighborhood to 30 in galaxies to 300 in clusters of galaxies. ...

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• HII regions H109-line catalog
• Catalog of Galaxies behind the Milky Way
• Radio survey for new compact HII regions

The image at left shows the nearby Andromeda galaxy. The rectangular box marks the region probed by NASAтАЩs Hubble Space Telescope (a blend of visible and ultraviolet light). ... The bright area near the center of the image is a grouping of stars nestled around the galaxy's black hole. The blue dots sprinkled throughout the image are ultra-blue stars whose population increases around the crowded hub. The square box shows a close-up view of an area around the core. ...

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