Dynamics of the Elliptical Galaxy NGC 4697 from Integrated Light and PNe

2006 ◽  
pp. 318-323
Author(s):  
Niranjan Sambhus ◽  
Flavio De Lorenzi ◽  
Ortwin Gerhard
Keyword(s):  
Elliptical Galaxy

scholarly journals In‐DepthChandraStudy of the AGN Feedback in Virgo Elliptical Galaxy M84

2008 ◽  
Vol 686 (2) ◽  
pp. 911-917 ◽  
Author(s):  
A. Finoguenov ◽  
M. Ruszkowski ◽  
C. Jones ◽  
M. Brüggen ◽  
A. Vikhlinin ◽  
...  
Keyword(s):  
Elliptical Galaxy

scholarly journals WISDOM project – VII. Molecular gas measurement of the supermassive black hole mass in the elliptical galaxy NGC 7052

2021 ◽  
Vol 503 (4) ◽  
pp. 5984-5996
Author(s):  
Mark D Smith ◽  
Martin Bureau ◽  
Timothy A Davis ◽  
Michele Cappellari ◽  
Lijie Liu ◽  
...  
Keyword(s):  
Black Hole ◽  
Hubble Space Telescope ◽  
Elliptical Galaxy ◽  
Continuum Emission ◽  
Molecular Gas ◽  
Supermassive Black Hole ◽  
Gas Kinematics ◽  
Long Baseline ◽  
Gas Measurement ◽  
Strong Gradient

ABSTRACT Supermassive black hole (SMBH) masses can be measured by resolving the dynamical influences of the SMBHs on tracers of the central potentials. Modern long-baseline interferometers have enabled the use of molecular gas as such a tracer. We present here Atacama Large Millimeter/submillimeter Array observations of the elliptical galaxy NGC 7052 at 0${^{\prime\prime}_{.}}$11 ($37\,$pc) resolution in the 12CO(2-1) line and $1.3\,$ mm continuum emission. This resolution is sufficient to resolve the region in which the potential is dominated by the SMBH. We forward model these observations, using a multi-Gaussian expansion of a Hubble Space Telescope F814W image and a spatially constant mass-to-light ratio to model the stellar mass distribution. We infer an SMBH mass of $2.5\pm 0.3\times 10^{9}\, \mathrm{M_\odot }$ and a stellar I-band mass-to-light ratio of $4.6\pm 0.2\, \mathrm{M_\odot /L_{\odot ,I}}$ (3σ confidence intervals). This SMBH mass is significantly larger than that derived using ionized gas kinematics, which however appears significantly more kinematically disturbed than the molecular gas. We also show that a central molecular gas deficit is likely to be the result of tidal disruption of molecular gas clouds due to the strong gradient in the central gravitational potential.

Dark matter in the elliptical galaxy NGC 1407

1994 ◽  
Author(s):  
Raymond E. White ◽  
Victor Andersen ◽  
Chris Williamson
Keyword(s):  
Dark Matter ◽  
Elliptical Galaxy

scholarly journals A Gas and Dust Rich Giant Elliptical Galaxy

2005 ◽  
Vol 13 ◽  
pp. 872-874
Author(s):  
O. Krause ◽  
U. Lisenfeld ◽  
U. Klaas ◽  
D. Lemke ◽  
M. Haas ◽  
...  
Keyword(s):  
Elliptical Galaxy ◽  
Dust Emission ◽  
Optical Spectra ◽  
Radio Continuum ◽  
Continuum Emission ◽  
Bolometric Luminosity ◽  
Thermal Radio ◽  
Visual Extinction ◽  
Dust Mass ◽  
Ir Emission

AbstractThe bolometric luminosity of LFIR = 2×1012 L⊙ makes ISOSS J 15079+7247 one of the most luminous and unusual galaxies detected by the 170 μm ISOPHOT Serendipity Survey (ISOSS). The detection of CO (1-0) emission identifies a giant elliptical galaxy at redshift z = 0.2136 as the counterpart of the FIR source. The derived high gas mass of 3 × 1010 M⊙ favours the picture that the dust emission is associated with this elliptical galaxy. The ultraluminous IR emission can be explained by a hidden starburst in the center of the elliptical. This is supported by the strength of non-thermal radio continuum emission. The huge dust mass of 5×108 M⊙ corresponds to a visual extinction of AV ~ 1000 mag, being consistent with the non-detection of any signatures of a strong starburst in ISOSS J 15079+7247 in optical spectra.

scholarly journals Abundance ratios and IMF slopes in the dwarf elliptical galaxy NGC 1396 with MUSE

2016 ◽  
Vol 463 (3) ◽  
pp. 2819-2838 ◽  
Author(s):  
J. J. Mentz ◽  
F. La Barbera ◽  
R. F. Peletier ◽  
J. Falcón-Barroso ◽  
T. Lisker ◽  
...  
Keyword(s):  
Elliptical Galaxy

scholarly journals Surface Photometry of Spiral Galaxy NGC 5005 and Elliptical Galaxy NGC 4278

2018 ◽  
Vol 15 (3) ◽  
pp. 314-323
Author(s):  
Baghdad Science Journal
Keyword(s):  
Spiral Galaxy ◽  
Surface Brightness ◽  
Elliptical Galaxy ◽  
Position Angle ◽  
Sloan Digital Sky Survey ◽  
Surface Photometry ◽  
Contour Maps ◽  
Sky Survey ◽  
Flat Field ◽  
The Galaxy

Two galaxies have been chosen, spiral galaxy NGC 5005 and elliptical galaxy NGC 4278 to study their photometric properties by using surface photometric techniques with griz-Filters. Observations are obtained from the Sloan Digital Sky Survey (SDSS). The data reduction of all images have done, like bias and flat field, by SDSS pipeline. The overall structure of the two galaxies (a bulge, a disk), together with isophotal contour maps, surface brightness profiles and a bulge/disk decomposition of the galaxy images were performed, although the disk position angle, ellipticity and inclination of the galaxies have been estimated.

scholarly journals A CENSUS OF BARYONS AND DARK MATTER IN AN ISOLATED, MILKY WAY SIZED ELLIPTICAL GALAXY

2011 ◽  
Vol 729 (1) ◽  
pp. 53 ◽  
Author(s):  
Philip J. Humphrey ◽  
David A. Buote ◽  
Claude R. Canizares ◽  
Andrew C. Fabian ◽  
Jon M. Miller
Keyword(s):  
Dark Matter ◽  
Milky Way ◽  
Elliptical Galaxy

scholarly journals SAURON’s Challenge for the Major Merger Scenario of Elliptical Galaxy Formation

2008 ◽  
Vol 685 (2) ◽  
pp. 897-903 ◽  
Author(s):  
Andreas Burkert ◽  
Thorsten Naab ◽  
Peter H. Johansson ◽  
Roland Jesseit
Keyword(s):  
Galaxy Formation ◽  
Elliptical Galaxy ◽  
Major Merger
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