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作 者:M.A.Chacón R.Delgado-Serrano B.Cervantes Sodi
机构地区:[1]Dirección Nacional de Ciencias Espaciales,Universidad Tecnológica de Panamá,Panamá [2]Instituto de Radioastronomía y Astrofísica,Universidad Nacional Autónoma de México,México
出 处:《Research in Astronomy and Astrophysics》2024年第11期143-152,共10页天文和天体物理学研究(英文版)
基 金: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)。
摘 要: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 0.0207 and 0.030,using r and z-band images.Overall,the bar fraction was 26%in the r-band and 19%in the z-band.Fo distinct morphological groups,barred spiral galaxies had fractions of 33%in the r-band and 22%in the z-band while barred lenticular galaxies had 25%in the r-band and 12%in the z-band.We observed that the bar fraction in spiral galaxies increases for stellar masses log(M*/M_(⊙))>10.5 and for galaxies with red colors(u-r)>2.0Additionally,most barred galaxies have a bulge-to-total ratio B/T≤0.2.Our results indicate that the bar fraction i more dependent on internal morphology than on the galaxy environment.
关 键 词:GALAXY evolution GALAXIES general GALAXIES luminosity function mass function GALAXY DISK
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