期刊
ASTRONOMY & ASTROPHYSICS
卷 575, 期 -, 页码 -出版社
EDP SCIENCES S A
DOI: 10.1051/0004-6361/201425261
关键词
galaxies: active; galaxies: Seyfert; galaxies: individual: HE 1029-1831
资金
- Deutsche Forschungsgemeinschaft (DFG) [SFB 956]
- European Research Council [267399-Momentum]
- European Union [312789]
Circumnuclear star formation and active galactic nucleus (AGN) feedback is believed to play a critical role in galaxy evolution. The low-luminosity quasi-stellar object (LLQSO) sample that contains 99 of the closest AGN with redshift z <= 0.06 fills the gap between the local AGN population and high-redshift QSOs that is essential to understand the AGN evolution with redshift. In this paper, we present the results of the near-infrared H-and K-integral field spectroscopy of the inner kiloparsecs of the LLQSO HE 1029-1831 with SINFONI. Line maps show that ionized hydrogen gas is located in spiral arms within the stellar bar and in a circumnuclear ring. Line fluxes and diagnostic line ratios indicate recent or ongoing star formation in the circumnuclear region and the presence of young and intermediate-age stellar populations in the bulge. In particular, we find traces of an intense starburst in the circumnuclear region that has begun around 100 Myr ago but has declined to a fraction of the maximum intensity now. We estimate the dynamical bulge mass and find that the galaxy follows published M-BH-M-bulge relations. However, bulge-disk decomposition of the K-band image with BUDDA reveals that HE 1029-1831 does not follow the M-BH-L-bulge relations of inactive galaxies. We conclude that the deviation from M-BH-L-bulge relations of inactive galaxies in this source is instead caused by young stellar populations and not by an undermassive black hole.
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