SIMBAD references

2014ApJ...783..135A - Astrophys. J., 783, 135 (2014/March-2)

Star formation bimodality in early-type galaxies.

AMBLARD A., RIGUCCINI L., TEMI P., IM S., FANELLI M. and SERRA P.

Abstract (from CDS):

We compute the properties of a sample of 221 local, early-type galaxies with a spectral energy distribution (SED) modeling software, CIGALEMC. Concentrating on the star-forming (SF) activity and dust contents, we derive parameters such as the specific star formation rate (sSFR), the dust luminosity, dust mass, and temperature. In our sample, 52% is composed of elliptical (E) galaxies and 48% of lenticular (S0) galaxies. We find a larger proportion of S0 galaxies among galaxies with a large sSFR and large specific dust emission. The stronger activity of S0 galaxies is confirmed by larger dust masses. We investigate the relative proportion of active galactic nuclei (AGNs) and SF galaxies in our sample using spectroscopic Sloan Digital Sky Survey data and near-infrared selection techniques, and find a larger proportion of AGN-dominated galaxies in the S0 sample than the E one. This could corroborate a scenario where blue galaxies evolve into red ellipticals by passing through an S0 AGN active period while quenching its star formation. Finally, we find a good agreement comparing our estimates with color indicators.

Abstract Copyright:

Journal keyword(s): galaxies: elliptical and lenticular, cD - galaxies: ISM - infrared: galaxies - infrared: ISM

VizieR on-line data: <Available at CDS (J/ApJ/783/135): table1.dat table2.dat table3.dat table4.dat table6.dat>

Status at CDS:  

Simbad objects: 224

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2020.05.26-23:31:29

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