Results 111 to 120 of about 618,301 (285)

A Simulation of the Dependence of Tidal Interaction on Galaxy Type in Compact Groups [PDF]

IJAA, 2024, 14, 85 - 100
We have investigated the role that different galaxy types have in galaxy-galaxy interactions in compact groups. N-body simulations of 6 galaxies consisting of a differing mixture of galaxy types were run to compare the relative importance of galaxy population demographic on evolution.
arxiv   +1 more source

Recent Star-Forming Activity in Local Elliptical Galaxies [PDF]

2009MNRAS.398.1651H, 2009
The formation and evolution of elliptical galaxies (EGs) is still an open question. In particular, recent observations suggest that elliptical galaxies are not only simple spheroidal systems of old stars. In this paper we analyze a sample of elliptical galaxies selected from the Sloan Digital Sky Survey in order to study the star-forming activity in ...
arxiv   +1 more source

THE COOL INTERSTELLAR MEDIUM IN ELLIPTICAL GALAXIES. II. GAS CONTENT IN THE VOLUME-LIMITED SAMPLE AND RESULTS FROM THE COMBINED ELLIPTICAL AND LENTICULAR SURVEYS [PDF]

, 2010
We report new observations of atomic and molecular gas in a volume-limited sample of elliptical galaxies. Combining the elliptical sample with an earlier and similar lenticular one, we show that cool gas detection rates are very similar among low ...
G. Welch, L. Sage, L. Young
semanticscholar   +1 more source

Volume measurement of microparticles using SEM photogrammetry and 3‐D reconstruction

Meteoritics &Planetary Science, EarlyView.
Abstract In this paper, we introduce a method for volume measurement of microparticles that includes scanning electron microscope photogrammetry with 3‐D model construction. Our results show that our method limits the volume uncertainty to ±10%, which is a significant improvement compared to previous methods (which likely overestimated volume by 100 ...
Y. Zheng, X. Yang, M. Valdes, A. M. Davis, P. R. Heck   +4 more
wiley   +1 more source

The Central Dark Matter Fraction of Massive Early-Type Galaxies

Frontiers in Astronomy and Space Sciences, 2022
Dark matter (DM) is predicted to be the dominant mass component in galaxies. In the central region of early-type galaxies it is expected to account for a large amount of the total mass, although the stellar mass should still represent the majority of the
C. Tortora, N. R. Napolitano, N. R. Napolitano   +2 more
doaj   +1 more source

The chemical evolution of elliptical galaxies with stellar and QSO dust production [PDF]

, 2010
Context. The presence of dust strongly affects the way we see galaxies and also the chemical abundances we measure in gas. It is therefore important to study the chemical evolution of galaxies by taking into account dust evolution. Aims.
A. Pipino, Xi-Long Fan, F. Matteucci, F. Calura, F. Calura, Laura Silva, G. Granato, R. Maiolino   +7 more
semanticscholar   +1 more source

Selection of Biofortified Sweet Potato (Ipomoea batatas L.) Genotypes in Response to Drought Stress

Journal of Agronomy and Crop Science, Volume 211, Issue 3, May 2025.
ABSTRACT The development of orange‐ and purple‐fleshed sweet potato genotypes with high nutritional quality and drought tolerance is paramount in the face of climate changes and exponential human population growth. Therefore, the objective was to select biofortified sweet potato genotypes tolerant to drought. Eight progenies developed by the NEOSC‐UFSC
Antonio Nunes de Andrade, Juliane Maciel Henschel, Damiana Justino Araújo, Daniel da Silva Gomes, Tatiana Dantas da Silva, Vanessa de Azevedo Soares, Estephanni Fernanda Oliveira Dantas, Adriano Salviano Lopes, André Dutra Silva Júnior, André Ricardo Zeist, Diego Silva Batista   +10 more
wiley   +1 more source

Genomic Insights into Post‐Domestication Expansion and Selection of Body Size in Ponies

Advanced Science, Volume 12, Issue 16, April 24, 2025.
The authors’ research delves into the history of ponies by assembling a pony genome and integrating horse genomes. This unveils genetic connections between Asian and European pony breeds. Cis‐regulatory elements of key genes impacting body size are also identified.
Xingzheng Li, Zihao Wang, Min Zhu, Binhu Wang, Shaohua Teng, Jing Yan, Haoyu Wang, Pengxiang Yuan, Shuwei Cao, Xiaolu Qu, Zhen Wang, Kai Zhan, Md. Panir Choudhury, Xintong Yang, Qi Bao, Sang He, Lei Liu, Pengju Zhao, Jicai Jiang, Hai Xiang, Lingzhao Fang, Zhonglin Tang, Yuying Liao, Guoqiang Yi   +23 more
wiley   +1 more source

The Magnetosphere‐Ionosphere‐Ground Responses to the May 2024 Super Solar Storm

Space Weather, Volume 23, Issue 4, April 2025.
Abstract Earth suffered the attack of the strongest geomagnetic storm in the last 20 years (Kp = 9, Dst∼ ${\sim} $ −400 nT) occurred on 11 May 2024. Taking advantage of the LEO multi‐parameter CSES satellite (launched in 2018) with a large inclination angle 97° $97{}^{\circ}$, with the joint observations of NOAA and GOES, we present a comprehensive ...
Zhenxia Zhang, Fang Zhang, Lu Wang, Xinqiao Li, Zeren Zhima, Yongfu Wang, Yanyan Yang, Dehe Yang, Shujie Li, Wei Chu, Na Zhou, Dedong Wang, Dali Zhang, Roberto Battiston, Roberto Iuppa, Xuhui Shen   +15 more
wiley   +1 more source

The Quorum Sensing Regulated sRNA Lrs1 Is Involved in the Adaptation to Low Iron in Pseudomonas aeruginosa

Environmental Microbiology Reports, Volume 17, Issue 2, April 2025.
The quorum sensing regulated sRNA Lrs1 participates in the adaptation of Pseudomonas aeruginosa in low iron by downregulating the siderophore pyochelin, the Quorum Sensing system PQS, and its associated virulence factor phenazines. ABSTRACT Iron is an essential nutrient for microbial growth. The opportunistic pathogen Pseudomonas aeruginosa can survive
Dimitra Panagiotopoulou, Natalia Romo Catalán, Max Wilcox, Nigel Halliday, Paolo Pantalone, James Lazenby, Miguel Cámara, Stephan Heeb   +7 more
wiley   +1 more source