Results 71 to 80 of about 61,724 (212)

On the Origins of Starburst and Post-Starburst Galaxies in Nearby Clusters

, 1998
HST WFPC2 images in B (F450W) and I (F814W) have been obtained for three starburst (SB) and two post-starburst (PSB) galaxies in the Coma cluster, and for three such galaxies in the cluster DC2048-52.
Barger A. J., Belloni P., Biviano A., Bower R. G., Bower R. G., Briel U. G., Couch W. J., Dressler A., Haynes M. P., James A. Rose, Kauffmann G., Kristi Dendy, Lobo C., MacLaren I., Moss C., Nelson Caldwell, Pickles A. J., Richardson W. H., Soucail G., Watt M. P., White S. D. M.   +20 more
core   +1 more source

Simulations of normal spiral galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2003
Accepted for publication in: Monthly Notices of the Royal Astron. Soc. The astro-ph copy has a few figures with degraded resolution. A copy with high quality graphics (4281 kb) can be downloaded from the kapteyn institute weg page at http://www.astro.rug.nl (Goto preprints and preprints 2003)
openaire   +2 more sources

Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight

Experimental Physiology, EarlyView.
Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley   +1 more source

Extended Thermal X-ray Emission from the Spiral-Dominant Group of Galaxies HCG 57

, 2002
We observed a group of galaxies, HCG 57, with ASCA. Regardless that their member galaxies are dominated by spiral galaxies, we detected extended thermal X-ray emission that is attributed to hot gas with a temperature of $1.04\pm0.10$ keV.
Fukazawa, Yasushi, Kawano, Naomi, Ohto, Akimitsu   +2 more
core   +1 more source

Scheffrahnitermes ubuntu (Isoptera: Apicotermitinae), Description of a New Termite Using a Collaborative Approach to Address the Wallacean Shortfall

New Zealand Journal of Zoology, Volume 53, Issue 2, June 2026.
The study of Neotropical Apicotermitinae remains challenging due to the large number of undescribed taxa (Linnean shortfall) as well as the scarcity of distributional data (Wallacean shortfall). Despite recent efforts to reduce the first one, the second remains an even more significant challenge.
Camila C. Mellado, Giordano G. Messina, Antonio Carvalho, Danilo E. Oliveira, Rayssa Almeida‐Azevedo, Renato Almeida de Azevedo, Hélida F. Cunha, Emanuelly F. Lucena, Joice P. Constantini, Olga P. Pinzón‐Florián, Tiago F. Carrijo   +10 more
wiley   +1 more source

A simple model of spiral galaxies from geometric optics

AIP Advances
We propose a simple model of spiral galaxies based on the interference of gravitational waves. The interference is deduced from geometric optics analysis of the refractive index profiles that mimic the behavior of gravitational potentials −1/r and r2. We
Bogdan Szafraniec, James N. Blake
doaj   +1 more source

The Study of Nebular Emission on Nearby Spiral Galaxies in the IFU Era

Advances in Astronomy, 2013
A new generation of wide-field emission-line surveys based on integral field units (IFU) is allowing us to obtain spatially resolved information of the gas-phase emission in nearby late-type galaxies, based on large samples of HII regions and full two ...
Fernando Fabián Rosales-Ortega
doaj   +1 more source

Local Benchmarks for the Evolution of Major-Merger Galaxies -- Spitzer Observations of a K-Band Selected Sample [PDF]

, 2010
We present Spitzer observations for a sample of close major-merger galaxy pairs (KPAIR sample) selected from 2MASS/SDSS-DR3 cross-matches. The goals are to study the star formation activity in these galaxies and to set a local bench mark for the cosmic ...
Abazajian, Abraham, Appleton, Barnes, Barton, Barton, Bell, Bell, Berrier, Bridge, Brinchmann, Buat, Bundy, Bushouse, C. Kevin Xu, Calzetti, Carlberg, Conselice, Conselice, Dale, Dale, De Vaucouleurs, Domingue, Domingue, Donovan Domingue, Driver, Duc, Ellison, Fazio, Flores, Gao, Glazebrook, Grützbauch, Hao, Hattori, Hopkins, Jarrett, Jason Surace, Jiasheng Huang, Jogee, Joseph, Joseph M. Mazzarella, Kampczyk, Karachentsev, Karachentseva, Kartaltepe, Khochfar, Kochanek, Krist, Lacey, Lavery, Le Flóch, Lilly, Lin, Lin, Lotz, Madau, Maia, Maller, Marchesini, Melbourne, Mihos, Moshir, Nanyao Lu, Park, Park, Patton, Patton, Rieke, Roc Cutri, Schiminovich, Shupe, Smith, Surace, Toomre, Wei-Hsin Sun, Woods, Woods, Wu, Xu, Xu, Yi-Wen Cheng, Yu Gao, Yun, Zheng   +84 more
core   +2 more sources

The Curious Case of CysE: Diversity and Distribution of Serine Acetyltransferases in Bacteria

Proteins: Structure, Function, and Bioinformatics, Volume 94, Issue 5, Page 1092-1103, May 2026.
ABSTRACT Serine acetyltransferase (CysE) is a member of the left‐handed β‐helix family of acetyltransferases that catalyze the rate limiting step in de novo cysteine biosynthesis. There are two isoforms of CysE that differ in length, with the shorter isoform lacking approximately 76 amino acids at the N‐terminus of the protein from the serine ...
Keely E. A. Oldham, Adele K. Williamson, Emily K. Grout, Joanna L. Hicks   +3 more
wiley   +1 more source

H i Gas and Star Formation in Major Galaxy Pairs from the FAST All Sky H i Survey (FASHI)

The Astrophysical Journal
Atomic hydrogen (H i ) plays a fundamental role in fueling star formation in galaxies. However, the behavior of H i gas in interacting systems, particularly galaxy pairs, remains elusive.
Shulan Yan, Qingzheng Yu, Taotao Fang, Chuan He, Andrew Ma, Junfeng Wang, C.Kevin Xu, Ming Zhu, Weishan Zhu   +8 more
doaj   +1 more source