output
20032026
most citedThe LOFAR Two-metre Sky Survey - II. First data release

586 citations

Showing 2021Show all

9 papers · 1 filter

astro-ph.EP2021★ 14 cited

Planetary core formation via multi-species pebble accretion

Geoffrey Andama, Nelson Ndugu, Simon Katrini Anguma +1

In the general classical picture of pebble-based core growth, planetary cores grow by accretion of single pebble species. The growing planet may reach the so-called pebble isolatio…

astro-ph.SR2021★ 12 cited

Study of Chemically Peculiar Stars-I : High-resolution Spectroscopy and K2 Photometry of Am Stars in the Region of M44

Santosh Joshi, Otto Trust, E. Semenko +30

We present a study based on the high-resolution spectroscopy and K2 space photometry of five chemically peculiar stars in the region of the open cluster M44. The analysis of the hi…

astro-ph.EP2021★ 12 cited

The SOPHIE search for northern extrasolar planets. XVIII: Six new cold Jupiters, including one of the most eccentric exoplanet orbits

O. D. S. Demangeon, S. Dalal, G. Hébrard +28

Context. Due to their low transit probability, the long-period planets are, as a population, only partially probed by transit surveys. Radial velocity surveys thus have a key role…

astro-ph.SR2021★ 4 cited

The Flare-Activity of 2MASSJ16111534-1757214 in the Upper Scorpius association

E. W. Guenther, D. Woeckel, P. Chaturvedi +3

Flares are known to play an important role for the evolution of the atmospheres of young planets. In order to understand the evolution of planets, it is thus important to study the…

astro-ph.SR2021★ 16 cited

Rotation and spots in normal A and Am/Fm stars

Otto Trust, Edward Jurua, Peter De Cat +1

Frequency analysis of long-term ultra-precise photometry can lead to precise values of rotation frequencies of rotating stars with ``hump and spike'' features in their periodograms…

astro-ph.SR2021★ 11 cited

HERMES spectroscopy of normal A and Am stars

Otto Trust, Edward Jurua, Peter De Cat +2

The nominal Kepler mission provided very high-precision photometric data. Using these data, interesting phenomena such as spots, and ``hump and spike'' features were observed in th…

gr-qc2021★ 17 cited

Cosmological perturbations in f(G) gravity

Albert Munyeshyaka, Joseph Ntahompagaze, Tom Mutabazi

We explore cosmological perturbations in a modified Gauss-Bonnet f(G) gravity, using a 1+3 covariant formalism. In such a formalism, we define gradient variables to get perturbed l…

astro-ph.GA2021★ 6 cited

The Distance and Peculiar Velocity of the Norma cluster (ACO 3627) using the Near-Infrared and -band Fundamental Plane Relations

Tom Mutabazi

We report distance measurements for the Norma cluster based on the near-infrared - and -band Fundamental Plane (FP) relations. Our simultaneous and -band photometr…

physics.ed-ph2021★ 1 cited

Inclusive education and research through African Network of Women in Astronomy and STEM for GIRLS in Ethiopia initiatives

Mirjana Pović, Vanessa McBride, Priscilla Muheki +11

The African Network of Women in Astronomy and STEM for GIRLS in Ethiopia initiatives have been established with aim to strengthen the participation of girls and women in astronomy…