NGC 7457 is an unbarred lenticular galaxy in the constellation Pegasus. NGC 7457 is its New General Catalogue designation. It was discovered by the astronomer William Herschel on 12 September 1784. [4] NGC 7457 is estimated to be about 43 million light-years (13.2 megaparsecs) away from the Sun. [2] There are about 201 globular clusters in the galaxy. [2] The core of NGC 7457 is surprisingly ...

1990年8月29日 · This Hubble Space Telescope view of galaxy NGC 7457, was taken on August 17, 1990 with the Wide Field/Planetary Camera. The picture on the left with high contrast shows the central portion of the galaxy. Predictably, the density of the starry population smoothly increases toward...

In this paper, we present the results of a wide-field imaging study of the globular cluster (GC) system of the field S0 galaxy NGC 7457. To derive the global properties of the GC system, we obtained deep BVR images with the WIYN 3.5 m telescope and Minimosaic Imager and studied the GC population of NGC 7457 to a projected radius of ~30 kpc. Our ground-based data were combined with archival and ...

2011年8月17日 · In this paper, we present the results of a wide-field imaging study of the globular cluster (GC) system of the field S0 galaxy NGC 7457. To derive the global properties of the GC system, we obtained deep BVR images with the WIYN 3.5 m telescope and Minimosaic Imager and studied the GC population of NGC 7457 to a projected radius of ∼30 kpc.

We construct Schwarzschild orbit-based models of NGC 7457, known as a peculiar low-mass lenticular galaxy. Our best-fitting model successfully retrieves most of the unusual kinematics behaviours of this galaxy, in which, the orbital distribution of stars is dominated by warm and hot orbits. The reconstructed surface brightness of the hot component matches fairly well the photometric bulge and ...

2008年6月6日 · The SA0 galaxy NGC 7457, at first glance, looks like a perfect example of a normal lenticular, with a classical de Vaucouleurs bulge and an exponential disk (Kormendy 1977 ). Basic data for this galaxy are listed in Table 1. No dust and very little cold gas have been detected in NGC 7457 (Peletier et al. 1999; Welch & Sage 2003; Sage & Welch ...

< NGC List NGC 7457 NGC 7457 is a lenticular galaxy located in the constellation of Pegasus. The NGC is a catalog of 7,840 nebulae, star clusters, and galaxies. Here are the key stats on NGC 7457:

NGC 7457 is a Elliptical/Spiral Galaxy in the Pegasus constellation. NGC 7457 is situated north of the celestial equator and, as such, it is more easily visible from the northern hemisphere. Given its visual magnitude of 11.87, NGC 7457 is visible with the help of a telescope having an aperture of 8 inches (200mm) or more. The image below is a photograph of NGC 7457 from the Digitized Sky ...

2019年6月28日 · We also suggest a merger-driven process as the most plausible scenario to explain the observed and dynamically modelled properties of the bulge of NGC 7457. We conclude that both the high level of cylindrical rotation and unusually low velocity dispersion reported for the NGC 7457 have most likely external origins.

2011年6月24日 · In this paper we present the results of a wide-field imaging study of the globular cluster (GC) system of the field S0 galaxy NGC 7457. To derive the global properties of the GC system, we obtained deep BVR images with the WIYN 3.5 m telescope and Minimosaic Imager and studied the GC population of NGC 7457 to a projected radius of approximately 30 kpc. Our ground-based data were combined with ...