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
25 papers · 1 filter
The true nature of Swift J0746.3-1608: a possible Intermediate Polar showing accretion state changes
F. Bernardini, D. de Martino, K. Mukai +1
Optical and X-ray observations suggested that the 9.38 h binary, SWIFT J0746.3- 1608 could be a Cataclysmic Variable of the magnetic or nova-like type, or a low mass X-ray binary.…
The double blue straggler sequence in NGC 2173: a field contamination artefact?
Chengyuan Li, Licai Deng, Richard de Grijs +2
Li et al. (2018) (hereafter L18) detected two apparently distinct populations of blue straggler stars (BSSs) in the young globular cluster NGC 2173, a similar feature as observed i…
The VMC Survey - XXXIII. The tip of the red giant branch in the Magellanic Clouds
M. A. T. Groenewegen, M. -R. L. Cioni, L. Girardi +6
In this paper JK_s data from the VISTA Magellanic Cloud (VMC) survey are used to investigate the tip of the red giant branch (TRGB) as a distance indicator. A linear fit to recent…
Roles of photospheric motions and flux emergence in the major solar eruption on 2017 September 6
Rui Wang, Ying D. Liu, J. Todd Hoeksema +2
We study the magnetic field evolution in the active region (AR) 12673 that produced the largest solar flare in the past decade on 2017 September 6. Fast flux emergence is one of th…
Mixed H/He bursts in SAX J1748.9-2021 during the spectral change of its 2015 outburst
Zhaosheng Li, V. De Falco, M. Falanga +6
SAX J1748.9-2021 is a transiently accreting X-ray millisecond pulsar. It is also known as an X-ray burster source discovered by Beppo-SAX. We analysed the persistent emission and t…
Evidence for the photoionization absorption edge in a photospheric radius expansion X-ray burst from GRS 1747312 in Terzan 6
Zhaosheng Li, Valery F. Suleimanov, Juri Poutanen +4
Thermonuclear X-ray bursts on the surface of neutron stars (NSs) can enrich photosphere with metals, which may imprint the photoionization edges on the burst spectra. We report her…
The VMC Survey - XXXII. Pre-main sequence populations in the Large Magellanic Cloud
Viktor Zivkov, Joana M. Oliveira, Monika G. Petr-Gotzens +11
Detailed studies of intermediate/low mass pre-main sequence (PMS) stars outside the Galaxy have so far been conducted only for small targeted regions harbouring known star formatio…
Structure and kinematics of Type II Cepheids in the Galactic bulge based on near-infrared VVV data
V. F. Braga, A. Bhardwaj, R. Contreras Ramos +5
Type II Cepheids (T2Cs) are radially pulsating variables that trace old stellar populations and provide distance estimates through their period-luminosity (PL) relation. We trace t…
Radio, Hard X-Ray, and Gamma-Ray Emissions Associated with a Far-Side Solar Event
V. V. Grechnev, V. I. Kiselev, L. K. Kashapova +9
The SOL2014-09-01 far-side solar eruptive event produced hard electromagnetic and radio emissions observed with detectors at near-Earth vantage points. Especially challenging was a…
Blue straggler stars beyond the Milky Way. III. Detection of evolved blue straggler candidates in Large Magellanic Cloud clusters
Chengyuan Li, Licai Deng, Kenji Bekki +3
We analyze {\sl Hubble Space Telescope} observations of nine Large Magellanic Cloud star clusters with ages of 1--2 Gyr to search for evolved counterparts of blue straggler stars.…
Wide-field Infrared Survey Explorer (WISE) Catalog of Periodic Variable Stars
Xiaodian Chen, Shu Wang, Licai Deng +2
We have compiled the first all-sky mid-infrared variable-star catalog based on Wide-field Infrared Survey Explorer (WISE) five-year survey data. Requiring more than 100 detections…
Blue straggler stars beyond the Milky Way. II. A binary origin for blue straggler stars in Magellanic Cloud clusters
Weijia Sun, Chengyuan Li, Richard de Grijs +1
We have analyzed populations of blue straggler stars (BSSs) in 24 Magellanic Cloud star clusters using multi-passband Hubble Space Telescope images. We compiled a homogeneous BSS d…
Nuclear starburst activity induced by elongated bulges in spiral galaxies
Eunbin Kim, Sungsoo S. Kim, Yun-Young Choi +4
We study the effects of bulge elongation on the star formation activity in the centers of spiral galaxies using the data from the Sloan Digital Sky Survey Data Release 7. We constr…
The MALATANG Survey: the L_gas-L_IR correlation on sub-kiloparsec scale in six nearby star-forming galaxies as traced by HCN J=4-3 and HCO^+ J=4-3
Qing-Hua Tan, Yu Gao, Zhi-Yu Zhang +43
We present HCN J=4-3 and HCO^+ J=4-3 maps of six nearby star-forming galaxies, NGC 253, NGC 1068, IC 342, M82, M83, and NGC 6946, obtained with the James Clerk Maxwell Telescope as…
The VMC survey XXX. Stellar proper motions in the central parts of the Small Magellanic Cloud
F. Niederhofer, M. -R. L. Cioni, S. Rubele +11
We present the first spatially resolved map of stellar proper motions within the central (3.1 2.4 kpc) regions of the Small Magellanic Cloud (SMC). The data used for…
The VMC survey - XXXI. The spatially resolved star formation history of the main body of the Small Magellanic Cloud
Stefano Rubele, Giada Pastorelli, Leo Girardi +16
We recover the spatially resolved star formation history across the entire main body and Wing of the Small Magellanic Cloud (SMC), using fourteen deep tile images from the VISTA su…
An extremely low mid-infrared extinction law toward the Galactic Center and 4% distance precision to 55 classical Cepheids
Xiaodian Chen, Shu Wang, Licai Deng +1
Distances and extinction values are usually degenerate. To refine the distance to the general Galactic Center region, a carefully determined extinction law (taking into account the…
Impact of distance determinations on Galactic structure. I. Young and intermediate-age tracers
Noriyuki Matsunaga, Giuseppe Bono, Xiaodian Chen +3
Here we discuss impacts of distance determinations on the Galactic disk traced by relatively young objects. The Galactic disk, about 40 kpc in diameter, is a cross-road of studies…
Optical-Mid-Infrared Period-Luminosity Relations for W UMa-type Contact Binaries Based on Gaia DR 1: 8% Distance Accuracy
Xiaodian Chen, Licai Deng, Richard de Grijs +2
W Ursa Majoris (W UMa)-type contact binary systems (CBs) are useful statistical distance indicators because of their large numbers. Here, we establish (orbital) period-luminosity r…
New insights into the formation of the blue main sequence in NGC 1850
Yujiao Yang, Chengyuan Li, Licai Deng +2
Recent discoveries of bimodal main sequences (MSs) associated with young clusters (with ages Gyr) in the Magellanic Clouds have drawn a lot of attention. One of the pr…
The VMC Survey. XXIX. Turbulence-Controlled Hierarchical Star Formation in the Small Magellanic Cloud
Ning-Chen Sun, Richard de Grijs, Maria-Rosa L. Cioni +10
In this paper we report a clustering analysis of upper main-sequence stars in the Small Magellanic Cloud, using data from the VMC survey (the VISTA near-infrared YJKs survey of the…
New estimation of non-thermal electron energetics in the giant solar flare on 28 October 2003 based on Mars Odyssey observations
B. A. Nizamov, I. V. Zimovets, D. V. Golovin +5
A new estimation of the total number and energy of the non-thermal electrons produced in the giant () solar flare on 2003 October 28 is presented based on the analysis…
Connections between star cluster populations and their host galaxy nuclear rings
Chao Ma, Richard de Grijs, Luis C. Ho
Nuclear rings are excellent laboratories for probing diverse phenomena such as the formation and evolution of young massive star clusters (YMCs), nuclear starbursts, as well as the…
An unexpected detection of bifurcated blue straggler sequences in the young globular cluster NGC 2173
Chengyuan Li, Licai Deng, Richard de Grijs +2
Bifurcated patterns of blue straggler stars in their color--magnitude diagrams have atracted significant attention. This type of special (but rare) pattern of two distinct blue str…