Study preferred alignments of angular momentum vector of i – magnitude SDSS galaxies having redshift 0.54 – 0.60

نویسندگان

چکیده

We present a study of the three-dimensional orientation spin vector i – magnitude having higher redshift ranging from 0.54 to 0.60 with respect equilateral co-ordinate system. The main aim this work is know and projection distant galaxies. database taken SDSS 14th data release (DR-14) range contains 239,209 provides two dimensional observed data, we convert it into three-dimension rotation axes galaxy help ‘position angle inclination method’. expected isotropy distribution curves are obtained by removing selection effects performing random simulation generating 107 virtual To check, or anisotropy have carry out four statistical tests: chi-square, auto-correlation coefficient, first-order Fourier series, First-order probability. In study, galaxies in all twenty samples supported strongly Hierarchy model evolution. Also, found be isotropic i01, i02, i03, i16, i17, i18, i19, i20 remaining i04 i15 seen as local anisotropic due merging phenomenon tidal effect. This shows problem coordinate BIBECHANA 19 (2022) 68-74

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ژورنال

عنوان ژورنال: Bibechana

سال: 2022

ISSN: ['2091-0762', '2382-5340']

DOI: https://doi.org/10.3126/bibechana.v19i1-2.46389