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We present two newly-discovered, compact elliptical (cE) galaxies, which exhibit clear evidence of tidal steams, found in a search of SDSS DR7. The structural parameters of the cEs are derived using GALFIT and give effective radii < 400 pc.…

Astrophysics of Galaxies · Physics 2015-05-20 Avon Huxor , Steve Phillipps , James Price , Rob Harniman

We present a structural analysis of 138 compact elliptical galaxies (cEs) in the redshift range of $z < 0.05$ using the Sloan Digital Sky Survey (SDSS) DR12 data. We perform single- and double-component S\'ersic model fitting to their SDSS…

Astrophysics of Galaxies · Physics 2025-06-18 Jinwon Yi , Soo-Chang Rey , Suk Kim , Youngdae Lee

We present two newly-discovered compact elliptical (cE) galaxies, exhibiting clear evidence of tidal steams, and found during a search of SDSS DR7 for cE candidates. The structural parameters of the cEs are derived using GALFIT, giving…

Astrophysics of Galaxies · Physics 2015-05-27 Avon Huxor , Steve Phillipps , James Price , Rob Harniman

We report the discovery of a rare compact early-type galaxy, SDSS J085431.18+173730.5 (hereafter cE\_AGN). It has an half light radius of R$_{e}$ = 490 pc and a brightness of M$_{r}$ = $-$18.08 mag. Optical spectroscopy available from the…

Astrophysics of Galaxies · Physics 2016-04-06 Sanjaya Paudel , Michael Hilker , Change Hee Ree , Minjin Kim

We present the discovery of rare active galactic nuclei (AGNs) in nearby (z < 0.05) compact elliptical galaxies (cEs) located in isolated environments. Using spectroscopic data from the Sloan Digital Sky Survey (SDSS) Data Release 12, four…

Astrophysics of Galaxies · Physics 2021-08-18 Soo-Chang Rey , Kyuseok Oh , Suk Kim

In order to investigate the formation mechanisms of the rare compact elliptical galaxies (cE) we have compiled a sample of 25 cEs with good SDSS spectra, covering a range of stellar masses, sizes and environments. They have been visually…

Astrophysics of Galaxies · Physics 2017-11-15 Anna Ferre-Mateu , Duncan A. Forbes , Aaron J. Romanowsky , Joachim Janz , Christoper Dixon

We present a photometric analysis of four galaxies classified as compact elliptical (cE) galaxies in the FS90 Antlia Group catalogue. Only 6 members of this rare type of galaxies are known until now. Using data in various photometric…

Astrophysics · Physics 2009-11-13 Analia V. Smith Castelli , Favio R. Faifer , Tom Richtler , Lilia P. Bassino

We present the stellar populations of 138 compact elliptical galaxies (cEs) in the redshift range of $z < 0.05$ using the Sloan Digital Sky Survey (SDSS) DR12. Our cEs are divided into those with [cE(w)] and without [cE(w/o)] a bright…

Astrophysics of Galaxies · Physics 2020-11-11 Suk Kim , Hyunjin Jeong , Soo-Chang Rey , Youngdae Lee , Jaehyun Lee , Seok-Joo Joo , Hak-Sub Kim

We present the first 3D observations of a diffuse elliptical galaxy (dE). The good quality data (S/N up to 40) reveal the kinematical signature of an embedded stellar disc, reminiscent of what is commonly observed in elliptical galaxies,…

Astrophysics · Physics 2008-11-26 Igor Chilingarian , Philippe Prugniel , Olga Sil'chenko , Victor Afanasiev

We present spatially-resolved two-dimensional maps and radial trends of the stellar populations and kinematics for a sample of six compact elliptical galaxies (cE) using spectroscopy from the Keck Cosmic Web Imager (KCWI). We recover their…

We present the discovery of an isolated compact group of galaxies that is extremely dense (median projected galaxy separation: 6.9 kpc), has a very low velocity dispersion ($\sigma_{\rm 2D}$ = 67 km s$^{-1}$), and where all observed members…

Astrophysics · Physics 2009-10-31 R. Weinberger , S. Temporin , F. Kerber

Based on data from the ongoing OGLE Galaxy Variability Survey (OGLE GVS) we have verified observed properties of stars detected by the near-infrared VVV survey in a direction near the Galactic plane at longitude l~-27 deg and recently…

Ellipticals in very low density environments are extremely rare but hold important clues about galaxy formation and evolution. In this paper we continue our study of isolated elliptical galaxies, presenting results on the radial stellar…

Astrophysics · Physics 2009-11-11 George Hau , Duncan Forbes

We report the discovery from Hubble Space Telescope ACS images of an extended globular cluster, denoted by Scl-dE1 GC1, in the Sculptor Group dwarf Elliptical galaxy Scl-dE1 (Sc22). The distance of the dE is determined as 4.3 +/- 0.25 Mpc…

Astrophysics of Galaxies · Physics 2009-11-13 G. S. Da Costa , E. K. Grebel , H. Jerjen , M. Rejkuba , M. E. Sharina

As part of the SPLASH survey of the Andromeda galaxy (M31) and its neighbors, we have obtained Keck/DEIMOS spectra of the compact elliptical (cE) satellite M32. This is the first resolved-star kinematical study of any cE galaxy. In contrast…

We report the discovery of an isolated compact galaxy triplet SDSS J084843.45+164417.3, which is first detected by the LAMOST spectral survey and then confirmed by the spectroscopic observation of the BFOSC of the 2.16 meter telescope. It…

Astrophysics of Galaxies · Physics 2016-05-25 Shuai Feng , Zheng-Yi Shao , Shi-Yin Shen , Maria Argudo-Fernández , Hong Wu , Man-I Lam , Ming Yang , Fang-Ting Yuan

Compact elliptical galaxies form a rare class of stellar system (~30 presently known) characterized by high stellar densities and small sizes and often harboring metal-rich stars. They were thought to form through tidal stripping of massive…

Astrophysics of Galaxies · Physics 2015-04-28 Igor Chilingarian , Ivan Zolotukhin

Compact elliptical (cE) galaxies remain an elusively difficult galaxy class to study. Recent observations have suggested that isolated and host-associated cEs have different formation pathways, while simulation studies have also shown…

Astrophysics of Galaxies · Physics 2023-08-15 Simon Deeley , Michael Drinkwater , Sarah Sweet , Kenji Bekki , Warrick Couch , Duncan Forbes

The relation between the size and luminosity for both bright and faint early-type galaxies has been repeatedly discussed as a crucial proxy for understanding evolutionary scenarios, as galaxies grow and lose their stellar mass in different…

Astrophysics of Galaxies · Physics 2015-06-19 Sanjaya Paudel , Thorsten Lisker , K. S. A. Hansson , Avon P. Huxor

Using well-defined selection criteria applied to the LEDA galaxy catalogue we have constructed a sample of elliptical galaxies that can be taken to lie in the field. Such criteria can easily be applied to theoretical simulations for direct…

Astrophysics · Physics 2009-11-10 Rodney M. Smith , Vicent J. Martinez , Matthew J. Graham
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