NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-07-23 T17:17:41 PDT
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For refcode 2013ApJ...763..136B:
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Copyright by American Astronomical Society. Reproduced by permission
2013ApJ...763..136B Characterization of a Sample of Intermediate-type Active Galactic Nuclei. II. Host Bulge Properties and Black Hole Mass Estimates Benitez, Erika; Mendez-Abreu, Jairo; Fuentes-Carrera, Isaura; Cruz-Gonzalez, Irene; Martinez, Benoni; Lopez-Martin, Luis; Jimenez-Bailon, Elena; Chavushyan, Vahram; Leon-Tavares, Jonathan Abstract. We present a study of the host bulge properties and their relations with the black hole mass for a sample of 10 intermediate-type active galactic nuclei (AGNs). Our sample consists mainly of early-type spirals, four of them hosting a bar. For 70^+10^_--17_% of the galaxies, we have been able to determine the type of the bulge, and find that these objects probably harbor a pseudobulge or a combination of classical bulge/pseudobulge, suggesting that pseudobulges might be frequent in intermediate-type AGNs. In our sample, 50% +/- 14% of the objects show double-peaked emission lines. Therefore, narrow double-peaked emission lines seem to be frequent in galaxies harboring a pseudobulge or a combination of classical bulge/pseudobulge. Depending on the bulge type, we estimated the black hole mass using the corresponding M_BH_-sigma* relation and found them within a range of 5.69 +/- 0.21 < log M ^sigma^*_BH_ < 8.09 +/- 0.24. Comparing these M ^sigma^*_BH_ values with masses derived from the FWHM of Hbeta and the continuum luminosity at 5100 A from their SDSS-DR7 spectra (M_BH_), we find that 8 out of 10 (80^+7^_--17_%) galaxies have black hole masses that are compatible within a factor of 3. This result would support that M_BH_ and M ^sigma^*_BH_ are the same for intermediate-type AGNs, as has been found for type 1 AGNs. However, when the type of the bulge is taken into account, only three out of the seven (43^+18^_--15_%) objects of the sample have their M ^sigma^*_BH_ and M_BH_ compatible within 3sigma errors. We also find that estimations based on the M_BH_-sigma* relation for pseudobulges are not compatible in 50% +/- 20% of the objects. Key words: galaxies: active, galaxies: bulges, galaxies: photometry, galaxies: Seyfert
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