The Globular Cluster System of the Virgo Dwarf Elliptical Galaxy VCC 1087 [PDF]
, 2005 We present an analysis of the globular cluster (GC) system of the nucleated dwarf elliptical galaxy VCC 1087 in the Virgo Cluster based on Keck LRIS spectroscopy and archival Hubble Space Telescope Advanced Camera for Surveys imaging.
M. Beasley +4 more
semanticscholar +1 more source
Galaxy Formation from the Primordial Black Holes
EPJ Web of Conferences, 2017 Supermassive black hole (SMBH) of size MBH = 106-10M⊙ is common in the Universe and it defines the center of the galaxy. A galaxy and the SMBH are generally thought to have co-evolved.
Morikawa Masahiro
doaj +1 more source
Chandra Observation of Diffuse Gas and Low-Mass X-Ray Binaries in the Elliptical Galaxy NGC 4649 (M60) [PDF]
, 2003 We present a Chandra X-ray observation of the X-ray bright E2 elliptical galaxy NGC 4649. In addition to bright diffuse emission, we resolve 165 discrete sources, most of which are presumably low-mass X-ray binaries.
S. Randall, C. Sarazin, J. Irwin
semanticscholar +1 more source
The frequency function of elliptical galaxy intrinsic shapes [PDF]
, 1995 We present fully nonparametric estimates of the frequency function of elliptical galaxy intrinsic shapes under the axisymmetric and triaxial hypotheses.
B. Tremblay, D. Merritt
semanticscholar +1 more source
Causal Discovery in Astrophysics: Unraveling Supermassive Black Hole and Galaxy Coevolution
The Astrophysical JournalCorrelation does not imply causation, but patterns of statistical association between variables can be exploited to infer a causal structure (even with purely observational data) with the burgeoning field of causal discovery.
Zehao Jin +11 more
doaj +1 more source
X-Ray Source Population in the Elliptical Galaxy NGC 720 with Chandra [PDF]
, 2002 With a Chandra ACIS-S3 observation, we detect 42 X-ray point sources in the elliptical galaxy NGC 720, including a possible central source. Most of these sources will be low-mass X-ray binaries, and 12 are located within 2'' of globular cluster ...
T. Jeltema +3 more
semanticscholar +1 more source
Planetary Nebulae and Stellar Kinematics in the Flattened Elliptical Galaxy NGC 1344 [PDF]
, 2005 We present photometric and kinematic information obtained by measuring 197 planetary nebulae (PNs) discovered in the flattened Fornax elliptical galaxy NGC 1344 (also known as NGC 1340) with an on-band, off-band, and grism+on-band filter technique.
A. Teodorescu +6 more
semanticscholar +1 more source
JWST NIRCam Observations of the Globular Cluster Population of RXJ 2129.7+0005
The Astrophysical JournalWe present an analysis of the globular cluster (GC) population in the galaxy cluster RXJ 2129.7+0005 ( z = 0.234) based on JWST NIRCam imaging in three filters: F115W, F150W, and F200W.
Kaitlyn E. Keatley, William E. Harris
doaj +1 more source
Radial Velocities of Globular Clusters in the Giant Elliptical Galaxy NGC 1399 [PDF]
, 1997 We report radial velocity measurements for 18 globular clusters and one dE galaxy in the field of the giant elliptical galaxy NGC 1399, the dominant galaxy of the Fornax Cluster.
D. Minniti +3 more
semanticscholar +1 more source
Galaxy Morphological Classification with Zernike Moments and Machine Learning Approaches
The Astrophysical Journal Supplement SeriesClassifying galaxies is an essential step for studying their structures and dynamics. Using GalaxyZoo2 (GZ2) fractions thresholds, we collect 545 and 11,735 samples in nongalaxy and galaxy classes, respectively.
Hamed Ghaderi +2 more
doaj +1 more source