financial support from the Secretaría Nacional de Ciencia,Tecnología e Innovación(SENACYT);the Departamento de Fortalecimiento a los Posgrados Nacionales and the coordination of the program“MOVILIDAD DE INVESTIGACIóN,”for the project“Formación de capacidades investigativas en la línea de Astronomía Extragaláctica 005-2023”;the support of the Programa de Apoyo a Proyectos de Investigación e Innovación Tecnológica(PAPIIT)IN108323 from the Dirección General de Asuntos del Personal Académico(DGAPA-UNAM)。
We analyzed the fractions of barred galaxies in the local Universe using a volume-limited sample of galaxies from the Sloan Digital Sky Survey Data Release 3.We examined 116 field galaxies with redshifts between 0.020...
supported by the National Natural Science Foundation of China(grant Nos.12233002,12041306,12147103,U1938201);by the National SKA Program of China(No.2020SKA0120300);by the National Key R&D Program of China(2021YFA0718500);by the Youth Innovations and Talents Project of Shandong Provincial Colleges and Universities(grant No.201909118)。
A negative correlation was found to exist between the low-energy spectral index and the redshift of gamma-ray bursts(GRBs)by Amati et al.It was later confirmed by Geng&Huang and Gruber et al.,but the correlation was a...
financially supported by the Ministry of Science and High Education of the Russian Federation。
This paper proposes the idea that the observed dependence of stellar activity cycles on rotation rate can be a manifestation of a stronger dependence on the effective temperature. Observational evidence is recalled an...
We study the complexity of the supergranular network through fractal dimension by using the Ca II K digitized data archive obtained from the Kodaikanal Solar Observatory.The data consist of 326 visually selected super...
supported by NSFC (No. 11803095);supported by NSFC (No. 11733010)
The alignment between satellite and central galaxies serves as a proxy for addressing the issue of galaxy formation and evolution, and has been investigated abundantly in observations and theoretical works.Most scenar...
supported by the National Key Basic Research Program of China(No.2015CB857004);the National Natural Science Foundation of China(Grant Nos.11173045,11233005,11325314 and 11320101002)
We investigate the color gradients of galaxies at 0.5 < z < 1.0, using a sample of ~35 000 galaxies with both spectroscopy from the final data release of the VIMOS Public Extragalactic Redshift Survey(VIPERS), and pho...
funded by the National Basic Research Program of China (973 Program,Grants 2012CB957801 and 2014CB744203);the National Natural Science Foundation of China (Grant Nos.41074132,41274193,41474166,41304144,11303017 and 11533005);the National Standard Research Program (Grant 200710123)
To investigate the dependence of large gradual solar energetic particle(SEP) events on the associated flares and coronal mass ejections(CMEs), the correlation coefficients(CCs) between peak intensities of E 〉 1...
jointly funded by the National Basic Research Program of China (973 Program, Grants 2012CB957801 and 2014CB744203);the National Natural Science Foundation of China (Grants 41074132, 41274193, 41474166, 41304144, 11303017 and 11533005);the National Standard Research Program (Grant 200710123)
To investigate the possible solar source of high-energy protons, correlation coefficients between the peak intensities of E ≥ 100 MeV protons, I100, and the peak flux and fluence of solar soft X-ray(SXR) emission, ...
supported at UAH by NSF grants AGS-1135432 and AGS-1622391;NASA grant NNX15AJ93G;at APL by NASA grant NNX13AR20G/115828 (ACE/ULEIS and STEREO/SIT);NASA subcontract SA4889-26309 from the University of California Berkeley;at Caltech by NNX13A66G, NNX11A075G;subcontract 00008864 of NNX15AG09G;by NSF grant AGS-1156004;at SwRI partially by NSF grant AGS-1460118
In large Solar Energetic Particle (SEP) events, ions can be accelerated at coronal mass ejection (CME)-driven shocks to very high energies. The spectra of heavy ions in many large SEP events show features such as ...
Supported by the National Natural Science Foundation of China
We have constructed a catalog containing the best available astrometric, photometric, radial velocity and astrophysical data for mainly F-type and G-type stars (called the Astrometric Catalog associated with Astrophy...