CCD surface photometry of galaxies with dynamical data. II - UBR photometry of 39 elliptical galaxies

Peletier, Reynier F.; Davies, Roger L.; Illingworth, G. D.; Davis, L. E.; Cawson, M. G. M.

doi:10.1086/115582

Cited by 418 publications

(561 citation statements)

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“…The g − i colors seem to be bluer since g i 1.3 1.1   -mag, while the u − i are redder up to 1 mag. This effect can be explained as a gradient in metallicity (see, e.g., Peletier et al 1990). …”

Section: Color Profiles and Color Mapmentioning

confidence: 99%

THE FORNAX DEEP SURVEY WITH VST. I. THE EXTENDED AND DIFFUSE STELLAR HALO OF NGC 1399 OUT TO 192 kpc

Iodice

Capaccioli

Grado

et al. 2016

ApJ

174

342

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We have started a new, deep multi-imaging survey of the Fornax cluster, dubbed the Fornax Deep Survey (FDS), at the VLT Survey Telescope (VST). In this paper we present the deep photometry inside two square degrees around the bright galaxy NGC1399 in the core of the cluster. We found that the core of the Fornax cluster is characterized by a very extended and diffuse envelope surrounding the luminous galaxy NGC1399: we map the surface brightness out to 33 arcmin (∼192 kpc) from the galaxy center and down to μ g ∼31 mag arcsec −2 in the g band. The deep photometry allows us to detect a faint stellar bridge in the intracluster region on the west side of NGC1399 and toward NGC1387. By analyzing the integrated colors of this feature, we argue that it could be due to the ongoing interaction between the two galaxies, where the outer envelope of NGC1387 on its east side is stripped away. By fitting the light profile, we found that there exists a physical break radius in the total light distribution at R=10 arcmin (∼58 kpc) that sets the transition region between the bright central galaxy and the outer exponential halo, and that the stellar halo contributes 60% of the total light of the galaxy (Section 3.5). We discuss the main implications of this work on the build-up of the stellar halo at the center of the Fornax cluster. By comparing with the numerical simulations of the stellar halo formation for the most massive bright cluster galaxies (i.e., M M 13 log 14, we find that the observed stellar halo mass fraction is consistent with a halo formed through the multiple accretion of progenitors with stellar mass in the range 10 8 -10 11 M e . This might suggest that the halo of NGC1399 has also gone through a major merging event. The absence of a significant number of luminous stellar streams and tidal tails out to 192 kpc suggests that the epoch of this strong interaction goes back to an early formation epoch. Therefore, different from the Virgo cluster, the extended stellar halo around NGC1399 is characterized by a more diffuse and well-mixed component, including the intracluster light.

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Section: Color Profiles and Color Mapmentioning

confidence: 99%

THE FORNAX DEEP SURVEY WITH VST. I. THE EXTENDED AND DIFFUSE STELLAR HALO OF NGC 1399 OUT TO 192 kpc

Iodice

Capaccioli

Grado

et al. 2016

ApJ

174

342

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show abstract

“…For galaxies that are not distorted by interactions, C 4 is the most meaningful moment, indicating the disky/boxy shapes of the isophotes (see Fig. 1 from Peletier et al 1990 for an example of these different shapes).…”

Section: Appendix D: the C 4 Boxyness/diskyness Parametermentioning

confidence: 99%

Formation and evolution of dwarf early-type galaxies in the Virgo cluster

Toloba

Boselli

Cenarro

et al. 2011

A&A

130

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We present new medium resolution kinematic data for a sample of 21 dwarf early-type galaxies (dEs) mainly in the Virgo cluster, obtained with the WHT and INT telescopes at the Roque de los Muchachos Observatory (La Palma, Spain). These data are used to study the origin of the dwarf elliptical galaxy population inhabiting clusters. We confirm that dEs are not dark matter dominated galaxies, at least not up to the half-light radius. We also find that the observed galaxies in the outer parts of the cluster are mostly rotationally supported systems with disky morphological shapes. Rotationally supported dEs have rotation curves similar to those of star-forming galaxies of similar luminosity and follow the Tully-Fisher relation. This is expected if dE galaxies are the descendants of low-luminosity star-forming systems that have recently entered the cluster environment and lost their gas due to a ram-pressure stripping event, quenching their star formation activity and transforming into quiescent systems, but conserving their angular momentum.

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“…They first argued that the variable, κ 1 , attains different values for different wavelengths via the dependence on the effective radius, r e , which implies different masses for different wavelengths, contrary to what is expected. A second problem comes from the observation, that lowest luminosity ellipticals do not show detectable color gradients (Peletier et al, 1990) suggesting there could be a dependence of color gradients on luminosity (and hence on mass). Accordingly, both κ 1 and κ 3 show a dependence on wavelength.…”

Section: The κ-Spacementioning

confidence: 99%

Toward understanding the origin of the fundamental plane for early-type galaxies

D’Onofrio

Valentinuzzi

Secco

et al. 2006

New Astronomy Reviews

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We present a panoramic review of several observational and theoretical aspects of the modern astrophysical research about the origin of the Fundamental Plane (FP) relation for Early-Type Galaxies (ETGs). The discussion is focused on the problem of the tilt and the tightness of the FP, and on the attempts to derive the luminosity evolution of ETGs with redshift. Finally, a number of observed features in the FP are interpreted from the standpoint of a new theoretical approach based on the two-component tensor virial theorem.

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CCD surface photometry of galaxies with dynamical data. II - UBR photometry of 39 elliptical galaxies

Cited by 418 publications

References 1 publication

THE FORNAX DEEP SURVEY WITH VST. I. THE EXTENDED AND DIFFUSE STELLAR HALO OF NGC 1399 OUT TO 192 kpc

THE FORNAX DEEP SURVEY WITH VST. I. THE EXTENDED AND DIFFUSE STELLAR HALO OF NGC 1399 OUT TO 192 kpc

Formation and evolution of dwarf early-type galaxies in the Virgo cluster

Toward understanding the origin of the fundamental plane for early-type galaxies

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