113 citations · 133 across the 5 of their papers we have counts for
6 papers
Effect of Be Disk Evolution on Global One-Armed Oscillations
Finny Oktariani, Atsuo T. Okazaki, Chatief Kunjaya +1
We study the effect of density distribution evolution on the global one-armed oscillation modes in low viscosity disks around isolated and binary Be stars. Observations show that s…
Statistical Improvement in Detection Level of Gravitational Microlensing Events from their Light Curves
Ichsan Ibrahim, Hakim L. Malasan, Chatief Kunjaya +3
In Astronomy, the brightness of a source is typically expressed in terms of magnitude. Conventionally, the magnitude is defined by the logarithm of the received flux. This relation…
Observation of ER UMa Stars
Taichi Kato, Daisaku Nogami, Hajime Baba +3
ER UMa stars are a recently recognized small subgroup of SU UMa-type dwarf novae, which are characterized by the extremely high outburst frequency and short (19--48 d) supercycles.…
Can Self Organized Critical Accretion Disks Generate a Log-normal Emission Variability in AGN?
Chatief Kunjaya, Putra Mahasena, Kiki Vierdayanti +1
Active Galactic Nuclei (AGN), such as Seyfert galaxies, quasars, etc., show light variations in all wavelength bands, with various amplitude and in many time scales. The variations…
On Nova Scorpii 2007 N.1 (V1280 Sco)
Hanindyo Kuncarayakti, Desima Kristyowati, Chatief Kunjaya
We present the results of our photometric and spectroscopic observations of Nova Sco 2007 N.1 (V1280 Sco). The photometric data was represented by a single data point in the light…
Variable Star Network: World Center for Transient Object Astronomy and Variable Stars
T. Kato, M. Uemura, R. Ishioka +4
Variable Star Network (VSNET, http://www.kusastro.kyoto-u.ac.jp/vsnet/) is a global professional-amateur network of researchers in variable stars and related objects, particularly…