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The Sloan Digital Sky Survey Reverberation Mapping Project: Composite Lags at
Jennifer I-Hsiu Li, Yue Shen, Keith Horne +13
We present composite broad-line region (BLR) reverberation-mapping lag measurements for \halpha, \hbeta, \HeII\, and \MgII\ for a sample of 144, quasars…
Star formation in a high-pressure environment: An SMA view of the Galactic centre dust ridge
D. L. Walker, S. N. Longmore, Q. Zhang +14
The star formation rate in the Central Molecular Zone (CMZ) is an order of magnitude lower than predicted according to star formation relations that have been calibrated in the dis…
The Sloan Digital Sky Survey Reverberation Mapping Project: H and H Reverberation Measurements From First-year Spectroscopy and Photometry
C. J. Grier, J. R. Trump, Yue Shen +39
We present reverberation mapping results from the first year of combined spectroscopic and photometric observations of the Sloan Digital Sky Survey Reverberation Mapping Project. W…
An Optimal Strategy for Accurate Bulge-to-disk Decomposition of Disk Galaxies
Hua Gao, Luis C. Ho
The development of two-dimensional (2D) bulge-to-disk decomposition techniques has shown their advantages over traditional one-dimensional (1D) techniques, especially for galaxies…
Stellar Photometric Structures of the Host Galaxies of Nearby Type 1 Active Galactic Nuclei
Minjin Kim, Luis C. Ho, Chien Y. Peng +2
We present detailed image analysis of rest-frame optical images of 235 low-redshift ( 0.35) type 1 active galactic nuclei (AGNs) observed with the Hubble Space Telescope. T…
A Magellan M2FS Spectroscopic Survey of Galaxies at 5.5<z<6.8: Program Overview and a Sample of the Brightest Lyman-alpha Emitters
Linhua Jiang, Yue Shen, Fuyan Bian +16
We present a spectroscopic survey of high-redshift, luminous galaxies over four square degrees on the sky, aiming to build a large and homogeneous sample of Ly emitters (LAEs) a…
ALMA Observations of Circumnuclear Disks in Early Type Galaxies: 12CO(2-1) and Continuum Properties
Benjamin D. Boizelle, Aaron J. Barth, Jeremy Darling +4
We present results from an Atacama Large Millimeter/submillimeter Array (ALMA) Cycle 2 program to map CO(2-1) emission in nearby early-type galaxies (ETGs) that host circumnuclear…
Black Hole Growth in Disk Galaxies Mediated by the Secular Evolution of Short Bars
Min Du, Victor P. Debattista, Juntai Shen +2
The growth of black holes (BHs) in disk galaxies lacking classical bulges, which implies an absence of significant mergers, appears to be driven by secular processes. Short bars of…
Ionized Gas Kinematics around an Ultra-luminous X-ray Source in NGC 5252 : Additional Evidence for an Off-nuclear AGN
Minjin Kim, Luis C. Ho, Myungshin Im
The Seyfert 2 galaxy NGC 5252 contains a recently identified ultra-luminous X-ray (ULX) source that has been suggested to be a possible candidate off-nuclear low-mass active galact…
The Carnegie-Irvine Galaxy Survey. V. Statistical study of bars and buckled bars
Zhao-Yu Li, Luis C. Ho, Aaron J. Barth
Simulations have shown that bars are subject to a vertical buckling instability that transforms thin bars into boxy or peanut-shaped structures, but the physical conditions necessa…
VLBA 24 and 43 GHz observations of massive binary black hole candidate PKS 1155+251
Xiaolong Yang, Xiang Liu, Jun Yang +5
PKS 1155+251 is a radio-loud quasar source at z=0.203. Observations using very long baseline interferometry (VLBI) at ~2, 5, 8 and 15 GHz show that the structure of the radio sourc…
PHL 6625: A Minor Merger-Associated QSO Behind NGC 247
Lian Tao, Hua Feng, Yue Shen +5
PHL 6625 is a luminous quasi-stellar object (QSO) at z = 0.3954 located behind the nearby galaxy NGC 247 (z = 0.0005). Hubble Space Telescope (HST) observations revealed an arc str…
The mineralogy of newly formed dust in active galactic nuclei
Sundar Srinivasan, Franciska Kemper, Yeyan Zhou +8
The tori around active galactic nuclei (AGN) are potential formation sites for large amounts of dust, and they may help resolve the so-called dust budget crisis at high redshift. W…
Chandra Survey of Nearby Galaxies: A Significant Population of Candidate Central Black Holes in Late-type Galaxies
Rui She, Luis C. Ho, Hua Feng
Based on the Chandra data archive as of March 2016, we have identified 314 candidate active galactic nuclei in 719 galaxies located closer than 50 Mpc, among them late-type (Hubble…
Improved method to determine the integrated properties of nuclear rings: NGC 1512
Chao Ma, Richard de Grijs, Luis C. Ho
The integrated properties of nuclear rings are correlated with their host galaxy's secular evolution and its dynamics, as well as with the formation and evolution of the ring's sta…
Simultaneous detection and analysis of optical and ultraviolet broad emission lines in quasars at z~2.2
Susanna Bisogni, Sperello di Serego Alighieri, Paolo Goldoni +4
We studied the spectra of six quasars obtained with the X-shooter spectrograph at the Very Large Telescope. The redshift of these sources and X-shooter's spectral cove…
Unveiling slim accretion disc in AGN through X-ray and Infrared observations
Núria Castelló-Mor, Shai Kaspi, Hagai Netzer +7
In this work, which is a continuation of Castelló-Mor et al. (2016), we present new X-ray and infrared (IR) data for a sample of active galactic nuclei (AGN) covering a wide range…