Results 31 to 40 of about 8,365,552 (275)

Galaxy morphology classification: are stellar circularities enough? [PDF]

open access: yesSerbian Astronomical Journal
We present a preliminary study exploring whether the stellar orbital circularity of simulated galaxies, available from precomputed catalogs in the IllustrisTNG project, can be used as a proxy for a broad morphological classification. We focus on
Baucalo Katarina, Mitrašinović Ana
doaj   +1 more source

Old and Young Bulges in Late‐Type Disk Galaxies [PDF]

open access: yesThe Astrophysical Journal, 2007
ApJ in press; paper with high resolution figures available at http://www.exp-astro.phys.ethz.ch/carollo/carollo1_2006.pdf; B, I, and H surface brightness profiles published in electronic tabular ...
Carollo, C. M.   +4 more
openaire   +2 more sources

Star-forming early-type galaxies and quiescent late-type galaxies in the local Universe [PDF]

open access: yes, 2022
Aims. The general consensus is that late-type galaxies undergo intense star-formation, activity while early-type galaxies are mostly inactive. We question this general rule and investigate the existence of star-forming early-type and quiescent late-type ...
BIANCHI, Simone   +23 more
core   +1 more source

Stellar halo constraints on simulated late-type galaxies [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2004
How do late-type spiral galaxies form within the context of a cold dark matter cosmology? We contrast N-body, smoothed particle hydrodynamical simulations of galaxy formation that employ two different supernova feedback mechanisms. Observed mass and metallicity distributions of the stellar haloes of the Milky Way and M31 provide constraints on these ...
Brook, Chris B.   +3 more
openaire   +3 more sources

The Classification of Galaxy Morphology in the H Band of the COSMOS-DASH Field: A Combination-based Machine-learning Clustering Model

open access: yesThe Astrophysical Journal Supplement Series, 2023
By applying our previously developed two-step scheme for galaxy morphology classification, we present a catalog of galaxy morphology for H -band-selected massive galaxies in the COSMOS-DASH field, which includes 17,292 galaxies with stellar mass M _ ...
Yao Dai   +8 more
doaj   +1 more source

Galaxy Dynamics from Edge-On Late-type Galaxies

open access: yes, 1999
We present first results of a program to study the dynamics of undisturbed bulgeless, low surface density disk galaxies in order to probe the underlying structure of dark matter halos. High resolution H-alpha rotation curves are combined with optical and infrared imaging to place strong limits on the halo profiles.
Dalcanton, J. J., Bernstein, R. A.
openaire   +2 more sources

Understanding the Fundamental Plane and the Tully Fisher Relation

open access: yesFrontiers in Astronomy and Space Sciences, 2020
The relation between early type galaxy size, surface brightness and velocity dispersion, “the fundamental plane,” has long been understood as resulting from equilibrium in their largely pressure supported stellar dynamics.
Jeremy Mould
doaj   +1 more source

Magnetic fields in galaxies - I. Radio discs in local late-type galaxies [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2010
10 pages, 8 figures; MNRAS in ...
Shabala, Stanislav   +2 more
openaire   +2 more sources

12CO ( 1-0 ) Molecular in Central Region of Markarian Galaxiesstatistic study [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة, 2009
From 2.6mm line of 12CO ( 1-0 ) molecular we utilize from data of 72 spceimens of Markarian galaxies have IR luminosity (Lfir ~ 1010L ) and inclination < i > between( 0o – 74.4o ) to investigation starformation activity from study of Hydrogen molecular (
AKRAM M. ALi
doaj   +1 more source

Surrogate‐Optimized Flow‐Guided Miniature Condenser for Rapid Exhaled Glucose Detection

open access: yesAdvanced Materials Technologies, EarlyView.
A surrogate‐optimized miniature condenser guides humid exhaled flow toward cold surfaces to accelerate exhaled breath condensate collection. By improving vapor access within a compact footprint, the design increases sample yield. This enables post‐collection enrichment and rapid colorimetric glucose detection from dilute exhaled biomarkers within a 5 ...
Yiming Thomas Lu   +6 more
wiley   +1 more source

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