NGC 7213 is a lenticular galaxy located in the constellation Grus. It is located at a distance of circa 70 million light-years from Earth, which, given its apparent dimensions, means that NGC 7213 is about 75,000 light-years across. [1] It was discovered by …

2004年12月1日 · We examine the XMM X-ray spectrum of the LINER-AGN NGC 7213, which is best fit with a power law, K-alpha emission lines from Fe I, Fe XXV and Fe XXVI and a soft X-ray collisionally ionised thermal...

2005年1月11日 · We present an XMM-Newton observation of the Seyfert–LINER (low-ionization nuclear emission-line region) galaxy NGC 7213. The RGS soft X-ray spectrum is well fitted with a power law plus soft X-ray collisionally ionized thermal plasma (kT = 0.18 +0.03−0.01 keV).

NGC 7213 is a Seyfert 1 Galaxy located in the constellation of Grus in the southern hemisphere. NGC 7213's distance from Earth is 71,754,403.09 light years. NGC 7213 is called NGC 7213 in the New General Catalogue (NGC).

NGC 7213 - A key to the nature of liners? New optical spectra of the nearby S0 galaxy NGC 7213 are analyzed. The observations are described and a brief overview of the spectrum is given. The subtraction of the stellar component is presented, and the measurement of various emission lines is discussed in detail.

NGC 7213 is a Spiral Galaxy in the Grus constellation. NGC 7213 is situated south of the celestial equator and, as such, it is more easily visible from the southern hemisphere. Given its visual magnitude of 12.08, NGC 7213 is visible with the help of a telescope having an aperture of 8 inches (200mm) or more.

The Seyfert characteristics of NGC 7213 are reviewed, and its shock features are reconciled with photoionization models. The arguments may apply to classical Liners as well. Finally, theoretical models are explored that can help explain the relationships discovered among the emission lines.

2004年12月1日 · We examine the XMM X-ray spectrum of the low-ionisation nuclear emission-line region (LINER)-AGN NGC 7213, which is best fit with a power law, Kα emission lines from Fe i, Fe xxv and Fe xxvi and a soft X-ray collisionally ionised thermal plasma with kT = 0.18+0.03−0.01 keV.

NGC 7213 lies within the HEAO-A2 x-ray error box for H 2208-47. M. M. Phillips, Cerro Tololo Interamerican Observatory, reports that spectrophotometric observations with the SIT-vidicon spectrometer on the 400-cm telescope show the nucleus of NGC 7213 to have an emission-line spectrum characteristic of a type I Seyfert galaxy.

Abstract: We present the X-ray spectral results from the longest X-ray Multi-mirror Mission–Newton observation, 133 ks, of the low-luminosity active galactic nucleus NGC 7213. The hardness-ratio analysis of the X-ray light curves discloses a rather constant X-ray spectral shape, at least for the observed exposure time, enabling us to perform ...