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144 papers · 1 filter
SCUSS u-Band Emission as a Star-Formation-Rate Indicator
Zhimin Zhou, Xu Zhou, Hong Wu +14
We present and analyze the possibility of using optical -band luminosities to estimate star-formation rates (SFRs) of galaxies based on the data from the South Galactic Ca…
Transient X-ray Sources in the Magellanic-type Galaxy NGC 4449
V. Jithesh, Zhongxiang Wang
We report the identification of seven transient X-ray sources in the nearby Magellanic-type galaxy NGC 4449 using the archival multi-epoch X-ray observations conducted with {\it Ch…
A systematic observational study of radio properties of H2O megamaser Seyfert-2 galaxies
Z. W. Liu, J. S. Zhang, C. Henkel +5
A systematic study is performed on radio properties of HO megamaser host Seyfert 2 galaxies, through multi-band radio continuum observations (at 11cm, 6.0 cm, 3.6 cm, 2.0 cm…
A Hard-to-Soft State Transition of Aquila X-1 Observed with Suzaku
Ko Ono, Kazuo Makishima, Soki Sakurai +3
The recurrent soft X-ray transient Aquila X-1 was observed with Suzaku for a gross duration of 79.9 ks, on 2011 October 21 when the object was in a rising phase of an outburst. Dur…
Silicate Dust in Active Galactic Nuclei
Yanxia Xie, Aigen Li, Lei Hao
The unification theory of active galactic nuclei (AGNs) hypothesizes that all AGNs are surrounded by an anisotropic dust torus and are essentially the same objects but viewed from…
Carbon monoxide in an extremely metal-poor galaxy
Yong Shi, Junzhi Wang, Zhi-Yu Zhang +4
Extremely metal-poor galaxies with metallicity below 10% of the solar value in the local universe are the best analogues to investigating the interstellar medium at a quasi-primiti…