Monitoring the profile variability of the double-peaked Balmer lines in Arp 102B
نویسندگان
چکیده
منابع مشابه
Baltic Astronomy, vol. 20, 476–480, 2011 SPECTRAL MONITORING OF AGN: PRELIMINARY RESULTS FOR Ark 564 AND Arp 102B
We present preliminary results of the long-term spectral monitoring of two active galactic nuclei with different broad line shapes: Ark 564 and Arp 102B. Ark 564 is a bright nearby narrow-line Syfert 1 (NLS1) galaxy with relatively narrow permitted optical emission lines and a high Fe II/Hβ ratio, while Arp 102B is a nearby broad-line radio galaxy with broad double-peaked Balmer emission lines....
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Using the stellar population synthesis, we model the stellar contribution for a sample of 110 doublepeaked broad-lines AGNs from the Sloan Digital Sky Survey (SDSS). The stellar velocity dispersions (σ∗) are obtained for 52 double-peaked AGNs with obvious stellar absorption features, ranging from 106 to 284 km s . We also use multi-component profiles to fit [O III]λλ4959, 5007 and Hβ emission l...
متن کاملLong-term Profile Variability of Double Peaked Emission Lines in Active Galactic Nuclei
We present up to two decades of spectroscopic monitoring of the double-peaked broad Hα emission lines of seven broad-line radio galaxies. These extremely broad, double-peaked lines are successfully modeled by emission from gas in the outer accretion disk, and their profiles vary on timescales of months to years. This variability is a valuable probe for understanding the structure and dynamics o...
متن کاملArp 102B: variability patterns of the Hα line profile as evidence for gas rotation in the broad-line region
We present results of an optical spectral monitoring campaign of the Seyfert 1 galaxy Arp 102B for a period of about 4 years between 1992 July and 1996 October carried out with a CCD spectrograph at the 2.6-m Shajn Telescope of the Crimean Astrophysical Observatory. Our data set consists of 20 Hα and 1 Hβ region spectra. During the monitoring period, the Hα line and continuum fluxes have shown ...
متن کاملArp 102B: An ADAF and a Torus?
Arp 102B is a nearby radio galaxy which displays the presence of doublepeaked Balmer emission lines. Sub-arcsec Keck mid-infrared imaging and Spitzer spectroscopy reveal a spatially compact mid-infrared source which displays tentative evidence for variability. The Fν ∝ ν spectral energy distribution is suggestive of an advection-dominated accretion flow. The absence of dust features over the 5−...
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ژورنال
عنوان ژورنال: Proceedings of the International Astronomical Union
سال: 2004
ISSN: 1743-9213,1743-9221
DOI: 10.1017/s1743921304001607