Investigating AGN black hole masses and the M-BH-sigma(e) relation for low surface brightness galaxies

	Investigating AGN black hole masses and the M-BH-sigma(e) relation for low surface brightness galaxies
	Subramanian, S.1; Ramya, S.2; Das, M.1; George, K.1; Sivarani, T.1; Prabhu, T. P.1
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2016-01-21
卷号	455 期号:3 页码:3148-3168
关键词	galaxies: active galaxies: bulges galaxies: general galaxies: nuclei
英文摘要	We present an analysis of the optical nuclear spectra from the active galactic nuclei (AGN) in a sample of low surface brightness (LSB) galaxies. Using data from the Sloan Digital Sky Survey (SDSS), we derived the virial black hole (BH) masses of 24 galaxies from their broad H alpha parameters. We find that our estimates of nuclear BH masses lie in the range 10(5)-10(7) M-circle dot, with a median mass of 5.62 x 10(6) M-circle dot. The bulge stellar velocity dispersion sigma(e) was determined from the underlying stellar spectra. We compared our results with the existing BH mass-velocity dispersion (M-BH-sigma(e)) correlations and found that the majority of our sample lie in the low BH mass regime and below the M-BH-sigma(e) correlation. We analysed the effects of any systematic bias in the M-BH estimates, the effects of galaxy orientation in the measurement of sigma(e) and the increase of sigma(e) due to the presence of bars and found that these effects are insufficient to explain the observed offset in M-BH-sigma(e) correlation. Thus, the LSB galaxies tend to have low-mass BHs which probably are not in co-evolution with the host galaxy bulges. A detailed study of the nature of the bulges and the role of dark matter in the growth of the BHs is needed to further understand the BH-bulge co-evolution in these poorly evolved and dark matter dominated systems.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	ACTIVE GALACTIC NUCLEI ; DIGITAL SKY SURVEY ; NARROW-LINE REGION ; STAR-FORMING GALAXIES ; DARK-MATTER HALOES ; X-RAY-EMISSION ; HOST GALAXIES ; DISK GALAXIES ; VELOCITY DISPERSION ; LOCAL UNIVERSE
收录类别	SCI
语种	英语
WOS记录号	WOS:000368008200067
内容类型	期刊论文
源URL	[http://119.78.226.72/handle/331011/28538]
专题	上海天文台_星系宇宙学重点实验室
作者单位	1.Indian Inst Astrophys, Bangalore 560034, Karnataka, India 2.Shanghai Astron Observ, Shanghai 200030, Peoples R China
推荐引用方式 GB/T 7714	Subramanian, S.,Ramya, S.,Das, M.,et al. Investigating AGN black hole masses and the M-BH-sigma(e) relation for low surface brightness galaxies[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2016,455(3):3148-3168.
APA	Subramanian, S.,Ramya, S.,Das, M.,George, K.,Sivarani, T.,&Prabhu, T. P..(2016).Investigating AGN black hole masses and the M-BH-sigma(e) relation for low surface brightness galaxies.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,455(3),3148-3168.
MLA	Subramanian, S.,et al."Investigating AGN black hole masses and the M-BH-sigma(e) relation for low surface brightness galaxies".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 455.3(2016):3148-3168.