output
20192023
most citedExoClock Project III: 450 new exoplanet ephemerides from ground and space observations

77 citations

12 papers

astro-ph.SR2023★ 11 cited

The Early Light Curve of a Type Ia Supernova 2021hpr in NGC 3147: Progenitor Constraints with the Companion Interaction Model

Gu Lim, Myungshin Im, Gregory S. H. Paek +19

The progenitor system of Type Ia supernovae (SNe Ia) is expected to be a close binary system of a carbon/oxygen white dwarf (WD) and a non-degenerate star or another WD. Here, we p…

astro-ph.EP2022★ 77 cited

ExoClock Project III: 450 new exoplanet ephemerides from ground and space observations

A. Kokori, A. Tsiaras, B. Edwards +214

The ExoClock project has been created with the aim of increasing the efficiency of the Ariel mission. It will achieve this by continuously monitoring and updating the ephemerides o…

astro-ph.EP2022★ 15 cited

Refinement of the convex shape model and tumbling spin state of (99942) Apophis using the 2020-2021 apparition data

H. -J. Lee, M. -J. Kim, A. Marciniak +30

Context. The close approach of the near-Earth asteroid (99942) Apophis to Earth in 2029 will provide a unique opportunity to examine how the physical properties of the asteroid cou…

astro-ph.GA2021

Search of Intermediate Mass Black Holes at Low Redshift with Intra-night Variability

Lael Shin, Jong-Hak Woo, Donghoon Son +4

We present a sample of intermediate-mass black hole (IMBH) candidates based on the detection of a broad H emission line and variability, which are selected from the Sloan Digita…

astro-ph.EP2021★ 56 cited

ExoClock project II: A large-scale integrated study with 180 updated exoplanet ephemerides

A. Kokori, A. Tsiaras, B. Edwards +102

The ExoClock project is an inclusive, integrated, and interactive platform that was developed to monitor the ephemerides of the Ariel targets to increase the mission efficiency. Th…

astro-ph.EP2021★ 9 cited

Photometry and model of near-Earth asteroid 2021 DW1 from one apparition

T. Kwiatkowski, P. Koleńczuk, A. Kryszczyńska +17

On 4 March 2021 at 9 UTC a 30-m in diameter near-Earth asteroid 2021 DW1 passed the Earth at a distance of 570000 km, reaching the maximum brightness of V=14.6 mag. We observed it…

astro-ph.GA2021★ 20 cited

H Reverberation Mapping of the Intermediate-Mass Active Galactic Nucleus in NGC 4395

Hojin Cho, Jong-Hak Woo, Tommaso Treu +24

We present the results of a high-cadence spectroscopic and imaging monitoring campaign of the active galactic nucleus (AGN) of NGC 4395. High signal-to-noise-ratio spectra were obt…

astro-ph.SR2020

Discovery of a young low-mass brown dwarf transiting a fast-rotating F-type star by the Galactic Plane eXoplanet (GPX) survey

P. Benni, A. Y. Burdanov, V. V. Krushinsky +64

We announce the discovery of GPX-1 b, a transiting brown dwarf with a mass of and a radius of , the first sub-stell…

astro-ph.SR2020★ 19 cited

High-resolution spectroscopic monitoring observations of FU Orionis-type object, V960 Mon

Sunkyung Park, Jeong-Eun Lee, Tae-Soo Pyo +9

We present the results of high-resolution (R 30,000) optical and near-infrared spectroscopic monitoring observations of a FU Orionis-type object, V960 Mon, which underwent an…

astro-ph.EP2020★ 36 cited

Original Research By Young Twinkle Students (ORBYTS): Ephemeris Refinement of Transiting Exoplanets

Billy Edwards, Quentin Changeat, Kai Hou Yip +60

We report follow-up observations of transiting exoplanets that have either large uncertainties (>10 minutes) in their transit times or have not been observed for over three years.…

astro-ph.GA2019★ 20 cited

The Seoul National University AGN monitoring project. II. BLR size and black hole mass of two AGNs

Suvendu Rakshit, Jong-Hak Woo, Elena Gallo +20

Active galactic nuclei (AGNs) show a correlation between the size of the broad line region (BLR) and the monochromatic continuum luminosity at 5100 Å, allowing black hole mass esti…

astro-ph.EP2019★ 33 cited

Ephemeris refinement of 21 Hot Jupiter exoplanets with high timing uncertainties

M. Mallonn, C. von Essen, E. Herrero +32

Transit events of extrasolar planets offer a wealth of information for planetary characterization. However, for many known targets, the uncertainty of their predicted transit windo…