TY - JOUR
T1 - Characterization of a sample of intermediate-type active galactic nuclei. II. Host bulge properties and black hole mass estimates
AU - Benítez, Erika
AU - Méndez-Abreu, Jairo
AU - Fuentes-Carrera, Isaura
AU - Cruz-González, Irene
AU - Martínez, Benoni
AU - López-Martin, Luis
AU - Jiménez-Bailón, Elena
AU - Chavushyan, Vahram
AU - León-Tavares, Jonathan
PY - 2013/2/1
Y1 - 2013/2/1
N2 - 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-σ* relation and found them within a range of 5.69 ± 0.21 < log M σ*BH < 8.09 ± 0.24. Comparing these M σ*BH values with masses derived from the FWHM of Hβ and the continuum luminosity at 5100 Å 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 σ*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 σ* BH and M BH compatible within 3σ errors. We also find that estimations based on the M BH-σ* relation for pseudobulges are not compatible in 50% ± 20% of the objects.
AB - 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-σ* relation and found them within a range of 5.69 ± 0.21 < log M σ*BH < 8.09 ± 0.24. Comparing these M σ*BH values with masses derived from the FWHM of Hβ and the continuum luminosity at 5100 Å 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 σ*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 σ* BH and M BH compatible within 3σ errors. We also find that estimations based on the M BH-σ* relation for pseudobulges are not compatible in 50% ± 20% of the objects.
KW - galaxies: Seyfert
KW - galaxies: active
KW - galaxies: bulges
KW - galaxies: photometry
UR - http://www.scopus.com/inward/record.url?scp=84872729858&partnerID=8YFLogxK
U2 - 10.1088/0004-637X/763/2/136
DO - 10.1088/0004-637X/763/2/136
M3 - Artículo
SN - 0004-637X
VL - 763
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 2
M1 - 136
ER -