Results 61 to 70 of about 744 (267)

Evolution of the Local Spiral Structure Revealed by OB-type Stars in Gaia DR3

The Astronomical Journal
The structure and evolution of the spiral arms of the Milky Way have long been an important yet controversial issue. The wide age range of OB-type stars, coupled with the large amount of high-precision astrometric data provided by Gaia DR3, presents us ...
Q. A. Ge, J. J. Li, C. J. Hao, Z. H. Lin, L. G. Hou, D. J. Liu, Y. J. Li, S. B. Bian   +7 more
doaj   +1 more source

The stellar content of low redshift radio galaxies from near-infrared spectroscopy [PDF]

Astronomy & Astrophysics, 2009
10 pages, 7 ...
Hyvonen, T., Kotilainen, J. K., Reunanen, J., Falomo, R.   +3 more
openaire   +2 more sources

Stellar CoRGI in MaNGA: Stellar Counterrotating Galaxies Identified in the MaNGA Survey

The Astrophysical Journal Supplement Series
Stellar counterrotating (CR) galaxies are systems hosting two large-scale stellar components rotating in opposite directions—a main, preexisting galaxy body with an older stellar population and a younger CR stellar disk likely formed from externally ...
Damir Gasymov, Ivan Yu. Katkov, Evgenii V. Rubtsov, Anna S. Saburova, Alexei Yu. Kniazev, Joseph D. Gelfand, Olga K. Sil’chenko, Igor V. Chilingarian, Alexei V. Moiseev, Anastasia V. Kasparova, Anatoly V. Zasov   +10 more
doaj   +1 more source

On the stellar content of the Carina dwarf spheroidal galaxy

, 2010
Accepted on PASP, 12 pages, 6 ...
Bono, Guillaume, Stetson, P.B., Walker, A.R., Monelli, M., Fabrizio, M., Pietrinferni, A., Brocato, E., Buonanno, R., Caputo, F., Cassisi, S., Castellani, M., Cignoni, M., Corsi, C.E., Dall'Ora, M., Degl'Innocenti, S., François, P., Ferraro, I., Iannicola, G., Nonino, M., Moroni, P.G.P., Pulone, L., Smith, H.A., Thévenin, F.   +22 more
openaire   +6 more sources

Akkermansia muciniphila enhances chicken resistance to infectious bronchitis virus by boosting GABA synthesis and suppressing the NF‐κB inflammatory pathway

iMetaOmics, EarlyView.
Infectious bronchitis virus (IBV) represents a major threat to poultry production, with current control strategies offering limited protection. In this study, we demonstrate gut microbiome is a critical determinant of IBV resistance using fecal microbiota transplantation.
Ouyang Peng, Yufang Liu, Xuanci Wang, Yihui Huang, Yiqin Yang, Qixiang Kang, Rui Geng, Guangli Hu, Aiping Lv, Fangyu Hu, Yongbo Xia, Xin Luo, Jiamin Liao, Yihong He, Zhanpeng Kuang, Yunping Du, Yun Zhang, Chunyi Xue, Zongxi Han, Wen‐Jun Li, Lei Dong, Hao Zhang, Yongchang Cao   +22 more
wiley   +1 more source

Probing the History of the Galaxy Assembly of the Counterrotating Disk Galaxy PGC 66551

The Astrophysical Journal
Stellar counterrotation in disk galaxies directly relates to the complex phenomenon of the disk mass assembly believed to be driven by external processes, such as accretion and mergers.
Ivan Yu. Katkov, Damir Gasymov, Alexei Yu. Kniazev, Joseph D. Gelfand, Evgenii V. Rubtsov, Igor V. Chilingarian, Olga K. Sil’chenko   +6 more
doaj   +1 more source

Arbuscular mycorrhizal fungal community abundance, functions, and symbiotic interactions revealed by root metatranscriptomes

iMetaOmics, EarlyView.
Paradigm shift: PCR‐free methods reveal 6–15‐fold higher arbuscular mycorrhizal (AM) fungal abundance than metabarcoding, exposing systematic underestimation across decades of research. Predictive power: AM fungal abundance serves as a community‐level trait that predicts crop yield under drought conditions.
Peilin Chen, John W. Taylor, Cheng Gao
wiley   +1 more source

The stellar content of the nuclear regions of Sc galaxies [PDF]

The Astrophysical Journal, 1976
The stellar content of the nuclear regions of seven nearby Sc galaxies has been determined by means of population syntheses utilizing narrow-band spectrophotometric observations covering the wavelength range 3300Å-10400Å. A linear-programming fitting technique is used in conjunction with simple models of star formation to provide physically consistent ...
openaire   +2 more sources

Blue Supergiants in the Pinwheel Galaxy M101: Comparison with H II Region Chemical Abundances, Spectroscopic Distance, and an Independent Determination of the Hubble Constant

The Astrophysical Journal
We present a quantitative spectroscopic study of 13 blue supergiant stars in the Pinwheel Galaxy M101, based on data obtained with the Low Resolution Imaging Spectrometer available at the Keck I telescope.
Fabio Bresolin, Rolf-Peter Kudritzki, Miguel A. Urbaneja, Eva Sextl, Adam G. Riess   +4 more
doaj   +1 more source

Ginseng polysaccharides prevent mastitis through Lactobacillus murinus‐derived deoxycholic acid and TGR5 signaling

iMetaOmics, EarlyView.
Prebiotic Ginseng polysaccharides (GP) alleviate mastitis through selective enrichment of gut L. murinus, which elevates its anti‐inflammatory metabolite deoxycholic acid (DCA). Circulating DCA engages mammary epithelial TGR5 receptors, triggering the cAMP–PKA pathway to suppress NF‐κB/NLRP3‐mediated inflammation.
Zhijie Zheng, Huiying Liu, Sizhe Chen, Jianhui Gu, Sisi Cai, Xiang Liu, Raphaela I. Lau, Yao Zhang, Sunjae Lee, Xiaoyan Wang, Kewei Fan, Xiaole Yin, Hein Min Tun, Renyou Gan, Haichong Wu, Qi Su   +15 more
wiley   +1 more source