Results 51 to 60 of about 83,866 (252)

The Arecibo Galaxy Environment Survey VIII : Discovery of an Isolated Dwarf Galaxy in the Local Volume [PDF]

, 2014
The Arecibo Galaxy Environment Survey (AGES) has detected a nearby HI source at a heliocentric velocity of +363 km/s . The object was detected through its neutral hydrogen emission and has an obvious possible optical counterpart in Sloan Digital Sky ...
Herbst, H., Minchin, R. F., Smith, R., Taylor, R.   +3 more
core   +1 more source

A framework for empirical galaxy phenomenology: the scatter in galaxy ages and stellar metallicities [PDF]

Monthly Notices of the Royal Astronomical Society, 2015
We develop a theoretical framework that extracts a deeper understanding of galaxy formation from empirically-derived relations among galaxy properties by extending the main-sequence integration method for computing galaxy star formation histories. We properly account for scatter in the stellar mass-star formation rate relation and the evolving fraction
Muñoz, Joseph A., Peeples, Molly S.
openaire   +2 more sources

The Geography of Success: A Spatial Analysis of Export Intensity in the Italian Wine Industry

Agribusiness, EarlyView.
ABSTRACT This paper investigates the paradox of how Italy's fragmented, SME‐dominated wine industry achieves global export success. Moving beyond purely firm‐centric explanations, we test whether export intensity is spatially dependent, clustering geographically in regional ecosystems.
Nicolas Depetris Chauvin, Jonas Di Vita
wiley   +1 more source

Simulating Galaxy Evolution

, 1998
The forwards approach to galaxy formation and evolution is extremely powerful but leaves several questions unanswered. Foremost among these is the origin of disks.
Bouwens, Rychard J., Silk, Joseph
core   +1 more source

Study of star formation in NGC 1084 [PDF]

, 2007
We present UBVRI broad band, H$\alpha$ narrow band photometry of the star forming complexes in the infra-red bright galaxy NGC 1084. Results of medium resolution spectroscopy of some of the brighter complexes are also discussed.
Afanasiev, Allard, Allen, Aller, Bastian, Blair, Bradley, Burstein, Calzetti, Calzetti, Charlot, Charlot, Condon, D. K. Sahu, De Vaucouleurs, Devereux, Diaz, Dopita, Dopita, Dopita, Elmegreen, Eskridge, Fathi, Fridman, Gonzalez Delgado, Greenawalt, Haynes, Hibbard, Ho, Hodge, Hunter, Izotov, James, Kassin, Kennicutt, Kennicutt, Kennicutt, Kennicutt, Kewley, Knapen, Kobulnicky, Kong, Koribalski, Kurucz, Landolt, Leitherer, Leitherer, Mayya, Mazzuca, McCall, McGaugh, Miller, Moiseev, Moorwood, Pagel, Popescu, Rand, Ravindranath, Reverte, Rozas, S. Ramya, Sarzi, Schlegel, Schweizer, Scoville, Shields, Shields, Sugai, T. P. Prabhu, Van den Bergh, Veilleux, Waller, Weistrop, Whitmore, Young, Young, Zaritsky   +76 more
core   +1 more source

The Ages of Dwarf Elliptical Galaxies [PDF]

The Astronomical Journal, 2004
We present narrowband photometry of 91 dwarf elliptical galaxies in the Coma and Fornax Clusters taken with the Stromgren (uvby) filter system. Dividing the sample by dwarf morphology into nucleated (dEN) and nonnucleated (dE) dwarfs reveals two distinct populations of early-type systems based on integrated colors.
Karl Rakos, James Schombert
openaire   +1 more source

Humanized immune system animal models and their recent applications

Animal Models and Experimental Medicine, EarlyView.
In this review, we provide an updated and comprehensive overview of the current state of humanized immune system animal model research. We discuss the variety of techniques used to produce humanized mice with their respective strengths and weaknesses, and evaluate the advantages and limitations of these models, including issues with incomplete immune ...
Nicolas Skuli, Rudra B. Amin, A’ishah Bakayoko, Marisa Kruidenier, Sahara Aqui, Sarah J. Skuli, Terence P. Gade   +6 more
wiley   +1 more source

Are High-Σ1 Massive Blue Spiral Galaxies Rejuvenated Systems?

The Astrophysical Journal
Quiescent galaxies generally possess denser cores than star-forming galaxies with similar mass. As a measurement of the core density, the central stellar mass surface density within a radius of 1 kpc (Σ _1 ) was thus suggested to be closely related to ...
Cai-Na Hao, Xiaoyang Xia, Yong Shi, Rui Guo, Yanmei Chen, Shuai Feng, Junqiang Ge, Qiusheng Gu   +7 more
doaj   +1 more source

Evidence of an interaction from resolved stellar populations: The curious case of NGC1313

, 2012
The galaxy NGC1313 has attracted the attention of various studies due to the peculiar morphology observed in optical bands, although it is classified as a barred, late-type galaxy with no apparent close-by companions. However, the velocity field suggests
Barnes, Blackman, de Vaucouleurs, Dohm-Palmer, E. Silva-Villa, Gallart, Hoopes, Jarrett, Koekemoer, Kuchinski, Larsen, Larsen, Marcelin, Marcelin, Marigo, Mollá, Méndez, Peters, Ryder, S. S. Larsen, Sandage, Schlegel, Schweizer, Silva-Villa, Silva-Villa, Sirianni, Tosi, Walsh   +27 more
core   +1 more source

The age of the Galaxy's thick disk [PDF]

Proceedings of the International Astronomical Union, 2008
AbstractWe discuss the age of the stellar disks in the solar neighborhood. After reviewing the various methods for age dating, we discuss current estimates of the ages of both the thin- and the thick disks. We present preliminary results for kinematically-selected stars that belong to the thin- as well as the thick disk.
Feltzing, S., Bensby, T.
openaire   +2 more sources