Search Results - "Block, David L."

ISM properties in hydrodynamic galaxy simulations: turbulence cascades, cloud formation, role of gravity and feedback by Bournaud, Frédéric, Elmegreen, Bruce G., Teyssier, Romain, Block, David L., Puerari, Ivânio

“…We study the properties of interstellar medium (ISM) substructure and turbulence in hydrodynamic [adaptive mesh refinement (AMR)] galaxy simulations with…”
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Pseudobulges in the Disk Galaxies NGC 7690 and NGC 4593 by Kormendy, John, Cornell, Mark E, Block, David L, Knapen, Johan H, Allard, Emma L

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Unique chemistry of a diamond-bearing pebble from the Libyan Desert Glass strewnfield, SW Egypt: Evidence for a shocked comet fragment by Kramers, Jan D., Andreoli, Marco A.G., Atanasova, Maria, Belyanin, Georgy A., Block, David L., Franklyn, Chris, Harris, Chris, Lekgoathi, Mpho, Montross, Charles S., Ntsoane, Tshepo, Pischedda, Vittoria, Segonyane, Patience, Viljoen, K.S. (Fanus), Westraadt, Johan E.

“…We have studied a small, very unusual stone, here named “Hypatia”, found in the area of southwest Egypt where an extreme surface heating event produced the…”
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Variation of Galactic Bar Length with Amplitude and Density as Evidence for Bar Growth over a Hubble Time by Elmegreen, Bruce G, Elmegreen, Debra Meloy, Knapen, Johan H, Buta, Ronald J, Block, David L, Puerari, Ivânio

“…[unk] -band images of 20 barred galaxies show an increase in the peak amplitude of the normalized m = 2 Fourier component with the R sub(25) -normalized radius…”
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Bogus dust screens from well-mixed exponential discs in galaxies by Elmegreen, Bruce G., Block, David L.

“…The V-K colours along the minor axes of spiral galaxies typically change from red to blue with increasing distance, giving the impression that the near side is…”
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Smooth dark spiral arms in the flocculent galaxy NGC2841 by Block, David L, Elmegreen, B. G, Wainscoat, R. J

“…Infrared observations of the prototype flocculent galaxy NGC2841 are examined. They reveal a remarkable system of long, dark spiral arms that arise from…”
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Macromolecules, Very Small Grains, and Large Dust Particles in the Whirlpool Galaxy M51 and Its Companion: A Unified View by Block, David L, Elmegreen, Bruce G, Stockton, Alan, Sauvage, Marc

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Reflection of Bulge Light from a 2 Kiloparsec Segment of Dust Lane in the Galaxy NGC 2841 by Block, David L, Stockton, Alan, Elmegreen, Bruce G, Willis, Jon

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Morphological differences between optical and infrared images of the spiral galaxy NGC309 by Block, David L, Wainscoatt, Richard J

“…Optical and infrared images of the spiral galaxy NGC309 are compared. Optically, NGC309 presents classic multi-arm morphology, but infrared images indicate a…”
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Cosmic Masks Still Dance by Block, David L, Puerari, Ivânio, Frogel, Jay A, Eskridge, Paul B, Stockton, Alan, Fuchs, Burkhard

“…The Hubble classification scheme of galaxies is based on their optical appearance or `masks'. As one goes from early to late type spirals, both barred and…”
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Dust Lanes in Spiral Galaxies by Grosboel, Preben J, Block, David L, Patsis, Panos A

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A family of cometary globules around an infrared source near the Rosette nebula by Block, David L

“…A photographic enhancement technique is used to reveal a family of four "cometary" globules in the southeast quadrant of the Rosette nebula, NGC2237-2246…”
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A TWO-COMPONENT POWER LAW COVERING NEARLY FOUR ORDERS OF MAGNITUDE IN THE POWER SPECTRUM OF SPITZER FAR-INFRARED EMISSION FROM THE LARGE MAGELLANIC CLOUD by BLOCK, David L, PUERARI, Ivânio, ELMEGREEN, Bruce G, BOURNAUD, Frédéric

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ISM properties in hydrodynamic galaxy simulations: turbulence cascades, cloud formation, role of gravity and feedback by Bournaud, Frédéric, Elmegreen, Bruce G., Teyssier, Romain, Block, David L., Puerari, Ivânio

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ISM properties in hydrodynamic galaxy simulations: turbulence cascades, cloud formation, role of gravity and feedback: ISM properties in galaxy simulations by Bournaud, Frédéric, Elmegreen, Bruce G., Teyssier, Romain, Block, David L., Puerari, Ivânio

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Pseudobulges in the Disk Galaxies NGC 7690 and NGC 4593 by Kormendy, J, Cornell, ME, Block, D L, Knapen, J H, Allard, EL

“…We present K sub(s) -band surface photometry of NGC 7690 (Hubble type Sab) and NGC 4593 (SBb). We find that, in both galaxies, a major part of the "bulge" is…”
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Georges Lemaitre and Stiglers Law of Eponymy by Block, David L

“…One of the greatest discoveries of modern times is that of the expanding Universe, almost invariably attributed to Hubble (1929). What is not widely known is…”
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Bogus dust screens from well-mixed exponential discs in galaxies by Elmegreen, Bruce G., Block, David L.

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A new method to estimate local pitch angles in spiral galaxies: Application to spiral arms and feathers in M81 and M51 by Puerari, Ivânio, Elmegreen, Bruce G, Block, David L

“…We examine $8\mu$m IRAC images of the grand design two-arm spiral galaxies M81 and M51 using a new method whereby pitch angles are locally determined as a…”
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The Large Magellanic Cloud: A power spectral analysis of Spitzer images by Puerari, Ivanio, Block, David L, Elmegreen, Bruce G, Bournaud, Frederic

“…We present a power spectral analysis of Spitzer images of the Large Magellanic Cloud. The power spectra of the FIR emission show two different power laws. At…”
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