626 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Macquarie UniversityAU75 papers
- Peking UniversityCN63 papers
- Chinese Academy of SciencesCN49 papers
- National Astronomical ObservatoriesCN43 papers
- European Southern ObservatoryCL42 papers
- Astronomical Observatory of CapodimonteIT38 papers
- Leibniz Institute for Astrophysics PotsdamDE38 papers
- Keele UniversityGB28 papers
- National Institute for AstrophysicsIT28 papers
- Osservatorio Astronomico di PadovaIT28 papers
- Kavli Institute for Theoretical SciencesCN23 papers
- International Centre for Radio Astronomy ResearchAU21 papers
20 papers · 1 filter
The VMC survey - XXIII. Model fitting of light and radial velocity curves of Small Magellanic Cloud classical Cepheids
Marcella Marconi, Roberto Molinaro, Vincenzo Ripepi +7
We present the results of the chi2 minimization model fitting technique applied to optical and near-infrared photometric and radial velocity data for a sample of 9 fundamental and…
The VMC Survey XXII. Hierarchical Star Formation in the 30 Doradus-N158-N159-N160 Star-Forming Complex
Ning-Chen Sun, Richard de Grijs, Smitha Subramanian +6
We study the hierarchical stellar structures in a 1.5 deg area covering the 30 Doradus-N158-N159-N160 star-forming complex with the VISTA Survey of the Magellanic Clouds.…
The radial distributions of the two main-sequence components in the young massive star cluster NGC 1856
Chengyuan Li, Richard de Grijs, Licai Deng +1
The recent discovery of double main sequences in the young, massive star cluster NGC 1856 has caught significant attention. The observations can be explained by invoking two stella…
Gamma-ray burst progenitors
Andrew Levan, Paul Crowther, Richard de Grijs +3
We review our current understanding of the progenitors of both long and short duration gamma-ray bursts (GRBs). Constraints can be derived from multiple directions, and we use thre…
Young star clusters in circumnuclear starburst rings
Richard de Grijs, Chao Ma, Siyao Jia +2
We analyse the cluster luminosity functions (CLFs) of the youngest star clusters in three galaxies exhibiting prominent circumnuclear starburst rings. We focus specifically on NGC…
Multi-wavelength observations of IGR J17544-2619 from quiescence to outburst
E. Bozzo, V. Bhalerao, P. Pradhan +12
In this paper we report on a long multi-wavelength observational campaign of the supergiant fast X-ray transient prototype IGR J17544-2619. A 150 ks-long observation was carried ou…
Clustering of Local Group distances: publication bias or correlated measurements? IV. The Galactic Center
Richard de Grijs, Giuseppe Bono
Aiming at deriving a statistically well-justified Galactic Center distance, , and reducing any occurrence of publication bias, we compiled the most comprehensive and most comp…
New open cluster Cepheids in the VVV survey tightly constrain near-infrared period--luminosity relations
Xiaodian Chen, Richard de Grijs, Licai Deng
Classical Cepheids are among the most useful Galactic and nearby extragalactic distance tracers because of their well-defined period--luminosity relations (PLRs). Open cluster (OC)…
Contact Binaries as Viable Distance Indicators: New, Competitive (V)JHKs Period-Luminosity Relations
Xiaodian Chen, Richard de Grijs, Licai Deng
Based on the largest catalogs currently available, comprising 6090 contact binaries (CBs) and 2167 open clusters, we determine the near-infrared CB period--luminosity…
Stellar populations in star clusters
Chengyuan Li, Richard de Grijs, Licai Deng
Stellar populations contain the most important information about star clus- ter formation and evolution. Until several decades ago, star clusters were believed to be ideal laborato…
Spatio-temporal dynamics of sources of hard X-ray pulsations in solar flares
S. A. Kuznetsov, I. V. Zimovets, A. S. Morgachev +1
We present systematic analysis of spatio-temporal evolution of sources of hard X-ray (HXR) pulsations in solar flares. We concentrate on disk flares whose impulsive phase are accom…
Observation of quasi-periodic solar radio bursts associated with propagating fast-mode waves
C. R. Goddard, G. Nisticò, V. M. Nakariakov +2
Radio emission observations from the Learmonth and Bruny Island radio spectrographs are analysed to determine the nature of a train of discrete, periodic radio \lq sparks\rq (finit…
Sympathetic Solar Filament Eruptions on 2015 March 15
Rui Wang, Ying D. Liu, Ivan Zimovets +3
The 2015 March 15 coronal mass ejection as one of the two that together drove the largest geomagnetic storm of solar cycle 24 so far was associated with sympathetic filament erupti…
Approximate analytical calculations of photon geodesics in the Schwarzschild metric
Vittorio De Falco, Maurizio Falanga, Luigi Stella
We develop a method for deriving approximate analytical formulae to integrate photon geodesics in a Schwarzschild spacetime. Based on this, we derive the approximate equations for…
Physical parameter study of eight W Ursae Majoris-type contact binaries in NGC 188
Xiaodian Chen, Licai Deng, Richard de Grijs +10
We used the newly commissioned 50 cm Binocular Network (50BiN) telescope at Qinghai Station of Purple Mountain Observatory (Chinese Academy of Sciences) to observe the old open clu…
First Observational Signature of Rotational Deceleration in a Massive, Intermediate-age Star Cluster in the Magellanic Clouds
Xiaohan Wu, Chengyuan Li, Richard de Grijs +1
While the extended main-sequence turn-offs (eMSTOs) found in almost all 1--2 Gyr-old star clusters in the Magellanic Clouds are often explained by postulating extended star-formati…
The tight subgiant branch of the intermediate-age star cluster NGC 411 implies a single-aged stellar population
Chengyuan Li, Richard de Grijs, Nathan Bastian +3
The presence of extended main-sequence turn-off (eMSTO) regions in intermediate-age star clusters in the Large and Small Magellanic Clouds is often interpreted as resulting from ex…
Clumpy wind accretion in supergiant neutron star high mass X-ray binaries
E. Bozzo, L. Oskinova, A. Feldmeier +1
The accretion of the stellar wind material by a compact object represents the main mechanism powering the X-ray emission in classical supergiant high mass X-ray binaries and superg…
The VMC Survey. XIX. Classical Cepheids in the Small Magellanic Cloud
V. Ripepi, M. Marconi, M. I. Moretti +7
The VISTA near infrared Y, J, Ks survey of the Magellanic System (VMC) is collecting deep Ks band time series photometry of pulsating variable stars hosted by the two Magellanic Cl…
Formation of new stellar populations from gas accreted by massive young star clusters
Chengyuan Li, Richard de Grijs, Licai Deng +4
Stars in star clusters are thought to form in a single burst from a common progenitor cloud of molecular gas. However, massive, old globular clusters -- with ages greater than 10 b…