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Nearby massive star explosion 30 million years ago equaled detonation of 100 million suns
massive star explosion 30 million years ago detonation of 100 million suns
2016/5/6
A giant star that exploded 30 million years ago in a galaxy near Earth had a radius prior to going supernova that was 200 times larger than our sun, according to astrophysicists at Southern Methodist ...
Mixing in star-forming clouds explains why sibling stars look alike（图）
sibling star-forming clouds
2014/9/12
The chemical uniformity of stars in the same cluster is the result of turbulent mixing in the clouds of gas where star formation occurs, according to a study by astrophysicists at the University of Ca...
The Information Of The Milky Way From 2MASS Whole Sky Star Count: The Structure Parameters
Milky Way Star Count:Structure Parameters
2011/10/12
The Ks band differential star count of the Two Micron All Sky Survey (2MASS) is used to derive the global structure parameters of the smooth components of the Milky Way. To avoid complication introduc...
Probing the Microscopic with the Macroscopic: from Properties of Star Cluster Systems to Properties of Cluster-Forming Regions
Macroscopic: Properties Cluster Systems Cluster-Forming Regions
2011/10/11
To understand how systems of star clusters have reached their presently observed properties constitutes a powerful probe into the physics of cluster formation, without needing to resort to high spatia...
Using Star Spots to Measure the Spin-orbit Alignment of Transiting Planets
Using Star Spots Measure Alignment Transiting Planets
2011/10/8
Spectroscopic follow-up of dozens of transiting planets has revealed the degree of alignment between the equators of stars and the orbits of the planets they host. Here we determine a method, applicab...
Herschel/HerMES: The X-ray - Infrared correlation for star-forming galaxies at z~1
X-ray - Infrared correlation star-forming galaxies
2011/9/29
For the first time, we investigate the X-ray/infrared (IR) correlation for star-forming galaxies at z~1, using SPIRE submm data from the recently-launched Herschel Space Observatory and deep X-ray dat...
Feedback Regulated Star Formation: From Star Clusters to Galaxies
Feedback Regulated Star Formation Clusters Galaxies
2011/9/28
This paper summarises results from semi-analytical modelling of star formation in protocluster clumps of different metallicities. In this model, gravitationally bound cores form uniformly in the clump...
On the equivalent effective temperature of massive young star clusters: The case of NGC 595
equivalent effective temperature massive star clusters
2011/9/27
The softness parameter is based on the relative intensity of several optical emission lines emitted by the gas ionized by young massive star clusters and can be used to derive the equivalent effective...
Star formation in the extended gaseous disk of the isolated galaxy CIG 96
extended gaseous disk isolated galaxy CIG 96
2011/9/27
We study the Kennicutt-Schmidt star formation law and efficiency in the gaseous disk of the isolated galaxy CIG 96 (NGC 864), with special emphasis on its unusually large atomic gas (HI) disk (r_HI/r_...
Galaxy Structure and Mode of Star Formation in the SFR-Mass Plane from z ~ 2.5 to z ~ 0.1
Galaxy Structure Star Formation SFR-Mass Plane
2011/9/27
We analyze the dependence of galaxy structure (size and Sersic index) and mode of star formation (\Sigma_SFR and SFR_IR/SFR_UV) on the position of galaxies in the SFR versus Mass diagram. Our sample c...
Dissecting high-mass star-forming regions; tracing back their complex formation history
high-mass star-forming regions tracing complex formation
2011/9/26
We present near-infrared JHKs imaging as well as K-band multi-object spectroscopy of the massive stellar content of W3 Main using LUCI at the LBT. We confirm 13 OB stars by their absorption line spect...
SGRs and AXPs：Evidence for Delayed Amplification of Magnetic Field after Neutron Star Formation?
Anomalous X-ray Pulsars soft gamma-ray repeaters supernova remnants
2009/9/4
We present new analysis of the birth rate of AXPs and SGRS and their associated SNRs. Using Kolmogorov-Smirnov statistics together with parametric fits based on a robust estimator, we find a birth rat...
The mysterious of?p class and the magnetic o-star _1 ori c：confronting observations
magnetic o-star _1 ori c confronting observations
2009/7/10
The mysterious of?p class and the magnetic o-star _1 ori c：confronting observations。
On the PMS Star HBC 498 and Its Associated Nebulous Stars (Research Note)
PMS Star Associated Nebulous Stars HBC 498
2009/6/25
On the PMS Star HBC 498 and Its Associated Nebulous Stars (Research Note)。
Stellar masses of star-forming galaxies at 0.3 < z < 1.2 in the GOYA survey
Stellar masses star-forming galaxies .3 < z < 1.2
2009/6/18
Stellar masses of star-forming galaxies at 0.3 < z < 1.2 in the GOYA survey。