... NGC 6822: Barnard s Galaxy . ... 8.02.2013 . ... But small galaxies form stars too, like nearby NGC 6822, also known as Barnard's Galaxy . ... About 7,000 light-years across, the dwarf irregular galaxy is seen to be filled with young blue stars and mottled with the telltale pinkish hydrogen glow of star forming regions in the deep color composite image . ... Publications with keywords: dwarf galaxy . Publications with words: dwarf galaxy . ... Bright Star Regulus near the Leo I Dwarf Galaxy . ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2013 February 8 . NGC 6822: Barnard's Galaxy . ... But small galaxies form stars too, like nearby NGC 6822, also known as Barnard's Galaxy . Beyond the rich starfields in the constellation Sagittarius, NGC 6822 is a mere 1.5 million light-years away, a member of our Local Group of galaxies. ... About APOD | ...

In this gallery are many images of Low Surface Brightness Galaxies which have recently been discovered and analyzed. ... The central surface brightness of this galaxy is 24.28 . Malin 2 This galaxy is another huge disk galaxy with a scale length of 15 kpc and a redshift of 15000 km/a. The high surface brightness knot in one of its spiral arms actually has the same color, luminosity and H-alpha equivalent width as the entire Large Magellanic Cloud . ... Truly it is a Low Surface Brightness Galaxy. ...

Our publications in 1997 year Izotov, Yu. I.; Thuan, T. X.; Lipovetsky, V. A. Dwarf Galaxies: Probes for Galaxy Formation and Evolution, Joint Discussion 2, 21 August 1997, Kyoto, Japan. Izotov, Yuri I.; Thuan, Trinh X.; Lipovetsky, Valentin A. Astrophysical Journal Supplement, 01 1997, v.108, p.1 . ... Pustil'nik, S. A.; Lipovetsky, V. A.; Izotov, Y. I.; Brinks, E.; Thuan, T. X.; Knyazev, A. Y.; Neizvestnyi, S. I.; Ugryumov, A. V. Pis'ma Astron. ... 74, August 1997, p. 536 . ...

... R.S. de Jong, A.C. Seth, D.J. Radburn-Smith, E.F. Bell, T.M. Brown, J.S. Bullock, S. Courteau, J.J. Dalcanton, H.C. Ferguson, P. Goudfrooij, S. Holfeltz, B.W. Holwerda, C. Purcell, J. Sick, D.B. Zucker, 2007, ApJL 667, 49 . ... S.A. Kassin, R.S. de Jong, B.J. Weiner 2005, ApJ 643, 804 . ... I. Near-Infrared and Optical Broadband Surface Photometry of 30 Galaxies . ... Eric F. Bell and Roelof S. de Jong 2001, ApJ 550, 212-229 . ... Roelof S. de Jong 1996, A Suppl. ... Back to Roelof's home page () . ...

home publications > mercury . ... Big Clusters, Tiny Galaxies . ... Astronomers struggle to understand why giant star clusters form in the tiniest of galaxies . ... These clusters are probably young versions of globular clusters, but they are commonly called super star clusters. Seven dwarf galaxies within 16 million light-years have formed super star clusters, with one of these galaxies, NGC 1569, possessing two young clusters. ... Super star clusters have a lot to tell us about star formation. ...

... I. D. Karachentsev, E. I. Kaisina, and D. I. Makarov, Suites of dwarfs around nearby giant galaxies, AJ, 2014, 147, 13 (2014AJ.. ... Table 1. ... I. D. Karachentsev and E. I. Kaisina, Star formation properties in the Local Volume galaxies via H and FUV fluxes, AJ, 2013, 146, 46 (2013AJ.. ... Figure 1. ... List of the nearby galaxies with measured SFR . I. D. Karachentsev, D. I. Makarov, and E. I. Kaisina, Updated Nearby Galaxy Catalog, AJ, 2013, 145, 101 (2013AJ.. ... Catalog of Nearby Galaxies . ...

... Karachentsev I.D., Dolphin A., Tully R.B., Sharina M., Makarova L., Makarov D. , Karachentseva V., Sakai S., Shaya E.J. Advanced Camera for Surveys Imaging of 25 Galaxies in Nearby Groups and in the Field . ... Karachentseva V.E., Melnyk O.V., Vavilova I.B., Makarov D.I. Virial and total masses of galaxy triplets in the Local Supercluster . 2005, Astron. ... Karachentsev I.D., Makarov D.I. "The Galaxy Motion Relative to Nearby Galaxies and the Local Velocity Field" . ...

Large-scale neutral hydrogen distribution and mean velocity field of the Circinus galaxy taken with various arrays of the ATCA. Jones, K.L., Koribalski, B.S. , Elmouttie, M., Haynes R.F. 1999, MNRAS 302, 649 . ... Gas and star formation in the Circinus galaxy . ... The large-scale atomic and molecular gas in the Circinus Galaxy . ... DSS optical image of the Circinus galaxy . ... Left: ESO composite image of the rings and outflow cone of ionized gas in the Circinus galaxy as observed by . ...

... CV & PUBLICATIONS | ... Nicholls, DC, Dopita, MA, Sutherland, RS, Jerjen, H, & Kewley, LJ " Metal-poor Dwarf Galaxies in the SIGRID Galaxy Sample. ... Nicholls DC, Jerjen, H, Dopita MA, & Basurah, H. (2014) " Nebular Metallicities in Two Isolated Local Void Dwarf Galaxies ", Astrophysical Journal 780, 88 * . ... Sweet SM, Drinkwater MJ, Meurer G, Bekki K, Dopita MA, Kilborn V, & Nicholls DC, " CHOIRS H I Galaxy Groups: The Metallicity of Dwarf Galaxies" , (2014) Astrophysical Journal , 782, 35 * . ...

... February 22, 1999 . NGC 1316: After Galaxies Collide . ... WFPC2 , HST , NASA . ... A preliminary inspection indicates that NGC 1316 is an enormous elliptical galaxy that started devouring a smaller spiral galaxy neighbor about 100 million years ago. ... Most elliptical galaxies have more and brighter globular clusters than evident in NGC 1316 . ... One hypothesis therefore holds that these globulars survive from an even earlier galaxy that was subsumed into NGC 1316. ... About APOD > . ...

. My astronomical research interests center on galaxy structure and evolution. Current topics include: . Polar-ring and interacting galaxies (see also new catalogue ) . Galaxy warps: statistics, properties and origin . Spiral galaxies at z~1: radial and vertical structure of stellar disks, statistics of interactions . Surface photometry and kinematics, dynamical modeling . Observational cosmology . Joomla Counter since Sep 1997

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... March . ... Posted on April 7, 2016 | 2 Comments Armstrong and Aldrin were the first two people on the Moon when Apollo 11 landed there in July 1969. ... Continue Reading.. ... No Comments Spring has truly sprung. ... Posted on March 29, 2016 | ... No Comments See you later February, youтАЩve been a wonderful month, but now it is time to welcome March. ... Posted on February 2, 2016 | ... Posted on January 7, 2016 | ...

An image of the grand design of spiral galaxy M100 obtained with NASA's Hubble Space Telescope resolves individual stars within the majestic spiral arms. ... Hubble has the ability to resolve individual stars in other galaxies and measure accurately the light from very faint stars. This makes space telescope invaluable for identifying a rare class of pulsating stars, called Cepheid Variable stars embedded within M100's spiral arms. ... 617) 495-7062 . Fax: (617) 495-7356 . ...

... Animation of the neutral hydrogen data cube from Westerbork. ... VIRGOHI 21 was a dark galaxy candidate discovered in 2005 it was found to contain no starlight down to a very low surface-brightness level, yet its velocity structure implied that it had a mass of 10 10 10 11 solar masses. ... VIRGOHI 21 was first observed in the 21-cm line of neutral hydrogen with the Lovell telescope at Jodrell Bank Observatory and the detection was confirmed using the Arecibo telescope ( Davies et al. ...

Astronomy Discussion Forums . Forums: . Atm ћ Astrophotography ћ Blackholes ћ Blackholes2 ћ CCD ћ Celestron ћ Domes ћ Education . ... Discussion Forums . ... Brightest Northern Hemisphere Galaxy . Forum List | ... Post Message | ... In which constellation would I find the brightest galaxy in the northern hemisphere? ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... Astrophysics Group . ... Galaxy Formation and Evolution . Publications . ... Very extended cold gas, star formation and outflows in the halo of a bright quasar at z > 6? ,б C. Cicone, R. Maiolino, et al. ... Belfiore, R. Maiolino, K. Bundy et al. 2015,б MNRAS in press (arXiv:1410.7781) . ... 2014, MNRASб in press (arXiv:1409.4764) . ... The dependence of the galaxy mass-metallicity relation on environment and the implied metallicity of the IGM?б  , Y. Peng & R. Maiolino 2014, MNRAS 438, 262 . ...

... Home Gallery Astrophotography Deep Sky Images by Joe DiNapoli . ... Deep Sky Images by Joe DiNapoli . ... Deep Sky Gallery by Ed Fox . ... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . Observing Resources for Amateur Astronomers - Part 2: Intermediate Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

... Tonight's Sky . ... News . ... Sky this Month . ... Star Atlas . ... Supernova showered Earth with radioactive debris . ... galaxies . stars . ... Bright new supernova blows up in the Cigar Galaxy (M82) . ... Before and after photos of the galaxy M82 showing the appearance of a brand new 11.7 magnitude supernova. ... The new supernova lies in M82, a starburst galaxy located within the constellation Ursa Major. ... M82 is a bright, striking edge-on spiral galaxy bright enough to see in binoculars. ...

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