Results 71 to 80 of about 646 (166)
The impact of selection criteria on the properties of green valley galaxies
Astronomy & AstrophysicsContext. The bi-modality in the distribution of galaxies usually obtained from colour-colour or colour-stellar mass (absolute magnitude) diagrams has been studied to determine the difference between galaxies in the blue cloud and in the red sequence, as ...
Nyiransengiyumva Beatrice +4 more
doaj +1 more source
Dwarf and Intermediate-mass Galaxies in MaNGA: Evidence for Different Evolutionary Trends
The Astrophysical JournalWe investigate the interplay between morphology, specific star formation rate (sSFR), and local environment using a sample of 7408 galaxies from the fourth-generation Sloan Digital Sky Survey Mapping Nearby Galaxies at Apache Point Observatory survey ...
Chandan Watts +2 more
doaj +1 more source
The Astrophysical JournalThe stellar mass–size relation is a sensitive probe of how environment shapes galaxy structure. We analyse this relation in the local Universe for galaxies in compact groups (CGs), low-mass groups ( M _vir ≤ 10 ^13 M _⊙ ), and high-mass groups, comparing
Gissel P. Montaguth +10 more
doaj +1 more source
Environmental invariance of the galaxy size–mass relation
Astronomy & AstrophysicsContext. The galaxy size-luminosity and size-stellar mass relations are important constraints on the galactic baryon cycle of gas accretion, star formation, and feedback.
Liao Li-Wen, Cooper Andrew P.
doaj +1 more source
The Formation of Stellar Halos in Late-Type Galaxies
, 2015 Near-field observations may provide tight constraints - i.e. "boundary conditions" - on any model of structure formation in the Universe. Detailed observational data have long been available for the Milky Way (e.g. Freeman $\&$ Bland-Hawthorn 2002) and have provided tight constraints on several Galaxy formation models (e.g. Abadi et al. 2003, Bekki
openaire +2 more sources
The Astrophysical JournalAlthough Type Ia supernovae (SNe Ia) are found in all galaxies types, recent local Hubble constant measurements have disfavored using SNe Ia in early-type/quiescent galaxies, aiming instead for better consistency with SNe Ia in star-forming/late-type ...
Max J. B. Newman +12 more
doaj +1 more source
The Astrophysical JournalWe present a comprehensive study of the galaxy size–stellar mass relation (SMR) at low redshift ( z ≤ 0.125), using a large spectroscopic sample from the Sloan Digital Sky Survey Data Release 13 (SDSS DR13).
Mohamed H. Abdullah +3 more
doaj +1 more source
Origins of coplanar counterrotating stellar disk components in late-type galaxies
Astronomy & AstrophysicsContext. Understanding galaxy evolution is key to explaining the structures we observe in the present-day Universe. Counterrotating stellar disks, i.e., co-spatial stellar disks rotating with opposite angular momentum, have been proposed as signatures of
Bugueño M. C. +3 more
doaj +1 more source
The spin of late-type galaxies at redshifts z < 1.2
, 2012 We study the evolution of the galactic spin using data of high redshift galaxies in the fields of the Great Observatories Origins Deep Survey (GOODS). Through simple dynamical considerations we estimate the spin for the disc galaxies in our sample and find that its distribution is consistent with that found for nearby galaxies. Defining a dimensionless
Cervantes-Sodi, Bernardo +4 more
openaire +2 more sources
Identifying lopsidedness in spiral galaxies using a deep convolutional neural network
Astronomy & AstrophysicsContext. About 30% of disk galaxies exhibit lopsidedness in their stellar disk. Although such a large-scale asymmetry in the disk can be primarily considered as a long-lived mode (m = 1), the physical origin of the lopsidedness in the disk continues to ...
Saha Biju +2 more
doaj +1 more source