【摘 要】
:
We present the fundamental parameters of ten open star clusters,nominated from Kronberger et al.who presented some newly discovered stellar groups on the basis
【机 构】
:
National Research Institute of Astronomy & Geophysics,Faculty of Science
论文部分内容阅读
We present the fundamental parameters of ten open star clusters,nominated from Kronberger et al.who presented some newly discovered stellar groups on the basis of the Two Micron All Sky Survey photometry and Digitized Sky Survey visual images.Star counts and photometric parameters (radius,membership,distance,color excess,age,luminosity function,mass function,total mass,and dynamical relaxation time) have been determined for these ten clusters for the first time.In order to calibrate our procedures,the main parameters (distance,age,and color excess) have been reestimated for another five clusters,which are also studied by Kronberger et al.
其他文献
An environmentally benign biodegradable chelant,polyepoxysuccinic acid (PESA),was used to separate heavy metals from sewage sludge from the Shanghai Taopu Waste
报道了反应离子刻蚀转移图形过程中对Amonil光刻胶的刻蚀参数优化的结果.利用软膜紫外光固化纳米压印技术,首先制备了线宽/间距均为200 nm的纳米光栅结构.然后采用反应离子刻
The author introduces the w-function defined on the considered spacelike graph M.Under the growth conditions w =o(log z) and w =o(r),two Bernstein type theorems
A mild,efficient and eco-friendly process for the electrophilic nitration is described using N2O5 as a green nitrating agent in the presence of rare earth metal
A simple and efficient protocol for the deprotection of dithioacetal,1,3-dithianes and 1,3-dithiolanes has been developed using H2O2-SOCl2 reagent system.In add
Equations governing the vibrations and buckling of multilayered orthotropic graphene sheets can be expressed as a system of n partial differential equations whe
Prednisolone succinate-glucosamine (PSG) conjugate,a prodrug for prednisolone,was synthesized and confirmed by NMR and MS spectrum.The stabilities of the prodru
An ethylene diamine tetra acetic acid (EDTA) precursor-based chemical method is reported for preparing single-phase nickel ferrite (NiFe 2 O 4 ) nanopowder. The
Domain switching around electrically permeable and impermeable cracks in ferroelectric single crystals subjected to a mechanical load is investigated by using a
The reduction of diphenylacetylene with lithium naphthalenide produced two kinds of intermediates,1 or 2,depending on the ratio of diphenylacetylene to lithium