An extensive catalogue of early-type galaxies in the nearby Universe

Abstract

We present a catalogue of 1715 early-type galaxies from the literature, spanning the luminosity range from faint dwarf spheroidal galaxies to giant elliptical galaxies. The aim of this catalogue is to be one of the most comprehensive and publicly available collections of data on early-type galaxies. The emphasis in this catalogue lies on dwarf elliptical galaxies, for which some samples with detailed data have been published recently. For almost all of the early-type galaxies included in it, this catalogue contains data on their locations, distances, redshifts, half-light radii, the masses of their stellar populations and apparent magnitudes in various passbands. Data on metallicity and various colours are available for a majority of the galaxies presented here. The data on magnitudes, colours, metallicities and masses of the stellar populations is supplemented with entries that are based on fits to data from simple stellar population models and existing data from observations. Also, some simple transformations have been applied to the data on magnitudes, colours and metallicities in this catalog, in order to increase the homogeneity of this data. Estimates on the Sérsic profiles, internal velocity dispersions, maximum rotational velocities, dynamical masses and ages are listed for several hundreds of the galaxies in this catalogue. Finally, each quantity listed in this catalogue is accompanied with information on its source, so that users of this catalogue can easily exclude data that they do not consider as reliable enough for their purposes.

A new formulation of the external field effect in MOND and numerical simulations of ultra-diffuse dwarf galaxies – application to NGC 1052-DF2 and NGC 1052-DF4

“…This implies that the effective radius of its population of 10 GCs is r e = 3.1 kpc, the stellar body of the galaxy has r e ≈ 2.2 kpc and its absolute V-band magnitude is M V = −15.4 mag, corresponding to a luminosity L V = 1.1 × 10 8 L . We furthermore assume (like van Dokkum et al 2018b) that the mass-to-light ratio of the stellar population is M * /L V = 2, while spectroscopy suggests a slightly lower value of 1.6 (Dabringhausen & Fellhauer 2016). These values for M * /L V are in any case well consistent with typical dwarf galaxies in this luminosity range (see e.g.…”

Study of central light concentration in nearby galaxies

“…We find that the CIR of ellipticals and classical bulges in the sample also shows an anti-correlation (r = -0.79, p > 99.99 percent) with the half-light radii of the galaxies adopted from the catalogue of ETGs compiled by Dabringhausen & Fellhauer (2016) and is shown in Fig. 2(a).…”

“…Spheroid masses have been adopted from Kormendy & Ho (2013). Stellar ages, total dynamical masses and half-light radii have been taken from Dabringhausen & Fellhauer (2016). The nuclear radio luminosity used in the analysis comes from Nyland et al (2016).…”

“…This catalogue contains R e values estimated for different filters ranging from optical to near IR. Though this might seem to be a source of inhomogeneity, a drastic difference between R e values estimated in g and z bands is not expected (Dabringhausen & Fellhauer 2016) and we use it for statistical purpose alone, putting the observed scatter as an upper limit. Here also, the pseudo bulges show more scatter compared to ellipticals and classical bulges but the merger galaxies seem to be following the correlation.…”

Discovery of a large H i ring around the quiescent galaxy AGC 203001

“…The NUV magnitudes are corrected for Galactic extinction following Wyder et al (2007) with E(B -V) values from the Schlegel et al (1998) dust maps. For ATLAS 3D galaxies the extinction corrected SDSS r-band magnitudes are taken the catalogue of nearby ETGs (Dabringhausen & Fellhauer 2016). The stellar masses for the ATLAS 3D galaxies are also taken from Dabringhausen & Fellhauer (2016).…”