Results 21 to 30 of about 356,387 (135)

The ATLAS(3D) project - XXV. Two-dimensional kinematic analysis of simulated galaxies and the cosmological origin of fast and slow rotators [PDF]

, 2014
We present a detailed two-dimensional stellar dynamical analysis of as ample of 44 cosmological hydrodynamical simulations of individual central galaxies with stellar masses of 2 x 1010Msun ∼≤ Mstar ∼≤ 6x 1011Msun.
Ven, G. v. d., Davis, T., Morganti, R., Johansson, P., McDermid, R., Davis, T. A., Blitz, L., McDermid, R. M., Oser, L., Weijmans, A., Sarzi, Marc, Duc, P. -A., Davies, R., Alatalo, Katherine, Duc, P.A., Davis, Timothy A., Khochfar, S., Bois, M., Bournaud, Frederic, Bayet, E., Serra, P., van de Ven, G., Hirschmann, M., Kuntschner, H., de Zeeuw, P. T., Cappellari, Michele, Duc, P.-A., Bournaud, F., Scott, N., Bureau, M., Davis, T., L., Naab, T., Young, L., Hirschmann, Michaela, Bayet, Estelle, Krajnovi, D., de Zeeuw, P., Davies, R. L., Alatalo, K., McDermid, Richard M., Ven, G. van de, Duc, P.- A., Crocker, A., Krajnovic, D., Emsellem, E., Duc, P., Cappellari, M., Johansson, P. H., Oosterloo, T., Young, Lisa M., Davis, T.,, Naab, Thorsten, Sarzi, M., Young, L. M., de Zeeuw, P.T., Weijmans, A.; id_orcid   +55 more
core   +1 more source

Warped Disk Galaxies: Statistical Properties from DESI Legacy Imaging Surveys DR8

The Astrophysical Journal
Warped structures are often observed in disk galaxies, yet their physical origin is still under investigation. We present a systematic study of warped edge-on disk galaxies based on imaging data from the DESI Legacy Imaging Surveys DR8, with the ...
Yiheng Wang, Han Qu, Jiafeng Lu, Huiyuan Wang, Enci Wang, Xi Kang   +5 more
doaj   +1 more source

Outer Rings in Early-type Galaxies: From Vorontsov-Velyaminov to Present

Open Astronomy, 2014
‘Ringed galaxies’, or disk galaxies with prominent outer ring structures, separated visually from the main galactic bodies, were discovered and intensively studied by B. A. Vorontsov-Vel’yaminov whose 110th anniversary is celebrated this year. We discuss
Silchenko O., Ilyina M., Katkov I.
doaj   +1 more source

Electronics‐Free Visual Monitoring of Dry Eye Disease‐Related Tear Biomarkers Using Smart Scleral Lenses

Advanced Science, EarlyView.
An electronics‐free smart scleral lens passively monitors dry eye disease‐related tear biomarkers through colorimetric sensing of chloride, pH, and ocular surface temperature. Smartphone‐assisted image analysis enables quantitative interpretation, providing a simple, non‐invasive strategy for ocular health monitoring without integrated electronics ...
Ziheng Wang, Sang Mok Park, Dawn Meyer, Seul Ah Lee, Yumin Dai, Tianhao Yu, Taewoong Park, Feiyang Li, Jason Gerard Jedlicka, Tristan Michael Long, Oluwabunmi T. Oladele, Gillian C. Shaw, Shin Ae Park, Pete S. Kollbaum, Young L. Kim, Chi Hwan Lee   +15 more
wiley   +1 more source

Massive Quiescent Disk Galaxies at 0.5 ≤ z ≤ 1 in CANDELS: Color Gradients and Likely Origin

The Astrophysical Journal
A rare population of massive disk-dominated quiescent galaxies has recently drawn much attention, which intrudes the red sequence (RS) population without destroying the underlying stellar disks.
Qifan Cui, Pinsong Zhao, F. S. Liu
doaj   +1 more source

Principal Component‐Based Classification of Blazar Candidates of Uncertain Type in the 4FGL/LAT

Astronomische Nachrichten, EarlyView.
ABSTRACT We adopted principal component analysis (PCA), linear discriminant analysis (LDA), and support vector machines (SVM), to study classification for a sample of 2708 Fermi blazars: 1142 BL Lac objects (BLLs), 759 flat spectrum radio quasars (FSRQs), and 807 blazar candidates of uncertain type (BCUs).
Wen‐Xin Yang, Guo‐Hai Chen, Jing‐Tian Zhu, Hong‐Guang Wang, Denis Bastieri, Xu‐Hong Ye, Jing‐Chao Liang, De‐Xiang Wu, Jiang‐He Yang, Anton A. Strigachev, Rumen S. Bachev, Jun‐Jie Feng, Yi Liu, Jun‐Hui Fan   +13 more
wiley   +1 more source

The nature and origin of disky elliptical galaxies [PDF]

, 2002
The observational trend that disky elliptical galaxies exhibit younger luminosity- weighted ages than boxy ellipticals is investigated. The presence of a possible young stellar disk embedded in these galaxies is explored by comparing kinematics derived ...
McDermid, Richard Morgan
core  

The Thickness of Galaxy Disks from z = 5 to 0 Probed by JWST

The Astrophysical Journal Letters
Although a thick disk is a structure prevalent in local disk galaxies and also present in our home Galaxy, its formation and evolution are still unclear.
Jianhui Lian, Li Luo
doaj   +1 more source

Composite Bulges. III. A Study of Nuclear Star Clusters in Nearby Spiral Galaxies

The Astrophysical Journal, 2023
We present photometric and morphological analyses of nuclear star clusters (NSCs)—very dense, massive star clusters present in the central regions of most galaxies—in a sample of 33 massive disk galaxies within 20 Mpc, part of the “Composite Bulges ...
Aishwarya Ashok, Anil Seth, Peter Erwin, Victor P. Debattista, Adriana de Lorenzo-Cáceres, Dmitri A. Gadotti, Jairo Méndez-Abreu, John E. Beckman, Ralf Bender, Niv Drory, Deanne Fisher, Ulrich Hopp, Matthias Kluge, Tutku Kolcu, Witold Maciejewski, Kianusch Mehrgan, Taniya Parikh, Roberto Saglia, Marja Seidel, Jens Thomas   +19 more
doaj   +1 more source

Influence of Dynamical Friction on the Unstable Manifolds of Lagrange Points in Barred Galaxies

Astronomische Nachrichten, EarlyView.
ABSTRACT Some time ago the idea has been proposed that rings and spirals in barred galaxies are shaped by the unstable manifolds of the Lagrange points sitting near the ends of the bar. The topic of the present article is an investigation of whether the numerical support for this suggestion can be improved by the inclusion of dynamical friction into ...
Christof Jung
wiley   +1 more source