32 citations · 134 across the 15 of their papers we have counts for
15 papers
Identifying the principal mechanism of star formation feedback
Chong Li, Rouyu Li, Keping Qiu +27
Feedback from massive stars regulates the formation of next-generation stars and planets and thus shapes the evolution of galaxies, yet observational evidence capable of determinin…
Surveys of clumps, cores, and condensations in Cygnus X: Temperature and nonthermal velocity dispersion revealed by VLA NH3 observations
Xu Zhang, Keping Qiu, Qizhou Zhang +6
The physical properties, evolution, and fragmentation of massive dense cores (MDCs, 0.1 pc) are fundamental pieces in our understanding of high-mass star formation. We aim t…
Surveys of clumps, cores, and condensations in Cygnus-X:Searching for circumstellar disks
Xing Pan, Keping Qiu, Kai Yang +2
To investigate whether disk-mediated accretion is the primary mechanism in high-mass star formation, we have established a survey of a large sample of massive dense cores within a…
Modeling of the high-velocity jet powered by the massive star MWC 349A
Antonio Martínez-Henares, Izaskun Jiménez-Serra, Jesús Martín-Pintado +6
MWC 349A is a massive star with a well-known circumstellar disk rotating following a Keplerian law, and an ionized wind launched from the disk surface. Recent ALMA observations car…
Detection of a High-velocity Jet from MWC 349A Traced by Hydrogen Recombination Line Emission
Sirina Prasad, Qizhou Zhang, James Moran +5
MWC 349A is one of the rare stars known to have hydrogen radio recombination line (RRL) masers. The bright maser emission makes it possible to study the dynamics of the system at m…
HI Self-absorption toward the Cygnus X North: From Atomic Filament to Molecular Filament
Chong Li, Keping Qiu, Di Li +5
Using the HI self-absorption data from the Five-hundred-meter Aperture Spherical radio Telescope (FAST), we perform a study of the cold atomic gas in the Cygnus-X North region. The…
Surveys of Clumps, Cores, and Condensations in the Cygnus X: II. Radio Properties of the Massive Dense Cores
Yuwei Wang, Keping Qiu, Yue Cao +3
We have carried out a high-sensitivity and high-resolution radio continuum study towards a sample of 47 massive dense cores (MDCs) in the Cygnus X star-forming complex using the Ka…
The DR21(OH) Trident -- Resolving the Massive Ridge into Three Entangled Fibers As the Initial Condition of Cluster Formation
Yue Cao, Keping Qiu, Qizhou Zhang +1
DR21(OH) ridge, the central part of a high-mass star and cluster forming hub-filament system, is resolved spatially and kinematically into three nearly parallel fibers (f1, f2, and…
ALMA observations of NGC 6334S. II. Subsonic and Transonic Narrow Filaments in a High-mass Star Formation Cloud
Shanghuo Li, Patricio Sanhueza, Chang Won Lee +22
We present a study of narrow filaments toward a massive infrared dark cloud, NGC 6334S, using the Atacama Large Millimeter/submillimeter Array (ALMA). Thirteen gas filaments are id…
The discovery of the largest gas filament in our Galaxy, or a new spiral arm?
Chong Li, Keping Qiu, Bo Hu +1
Using the Five-hundred-meter Aperture Spherical radio Telescope (FAST), we detect a giant HI filamentary structure in the sky region of 3077 311$.\!\!^{\…
Core mass function of a single giant molecular cloud complex with ~10^4 cores
Yue Cao, Keping Qiu, Qizhou Zhang +2
Similarity in shape between the initial mass function (IMF) and the core mass functions (CMFs) in star-forming regions prompts the idea that the IMF originates from the CMF through…
Network of Star Formation: Fragmentation controlled by scale-dependent turbulent pressure and accretion onto the massive cores revealed in the Cygnus-X GMC complex
Guang-Xing Li, Yue Cao, Keping Qiu
Molecular clouds have complex density structures produced by processes including turbulence and gravity. We propose a triangulation-based method to dissect the density structure of…
DR 21 South Filament: a Parsec-sized Dense Gas Accretion Flow onto the DR 21 Massive Young Cluster
Bo Hu, Keping Qiu, Yue Cao +8
DR21 south filament (DR21SF) is a unique component of the giant network of filamentary molecular clouds in the north region of Cygnus X complex. Unlike the highly fragmented and st…
An Isothermal Outflow in High-mass Star-forming Region G240.31+0.07
Junhao Liu, Keping Qiu, Friedrich Wyrowski +4
We present Atacama Pathfinder EXperiment (APEX) observations toward the massive star-forming region G240.31+0.07 in the CO J = 3--2, 6--5, and 7--6 lines. We detect a parsec-sized,…
Narrow absorption lines with two observations of Sloan Digital Sky Survey
Zhi-Fu Chen, Qiu-Sheng Gu, Yan-Mei Chen +1
We assemble 3524 quasars from Sloan Digital Sky Survey (SDSS) with repeated observations to search for variations of narrow C IV1548,1551 and Mg II2796,2803 absorption doublets in…