M. Usatov

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Notes & Essays

Detection of Population III Stars

October 21, 2015October 21, 2016

It is suggested that two distinct Population III classes may have existed: population III.1 and population III.2. The former, consisting […]

Notes & Essays

Planetary Energy Balance, Kevin–Helmholtz Contraction

October 21, 2015October 21, 2016

I would like to discuss Jupiter’s energy balance, in particular the excess heat radiated by it to space and the […]

Notes & Essays

Galaxy Photometry

October 21, 2015October 21, 2016

The aims of this project are as following: Reduce multi-band (BVR) CCD data of the M 51, M 63, M […]

Notes & Essays

Dynamical Mass Measurement of the Coma Cluster (Abell 1656)

October 21, 2015October 21, 2016

Following (Zwicky 1937) we start with the virial theorem that relates the average kinetic energy ⟨K⟩ to the average gravitational potential […]

Notes & Essays

Difficulties Involved in Observing Star and Planet Formation

October 21, 2015October 21, 2016

It is known that star formation occurs in regions where dense molecular clouds undergo gravitational collapse. While observations of cold […]

Notes & Essays

What is a Galaxy?

October 21, 2015October 21, 2016

Galaxies are enormous conglomerations of stars and interstellar material. The qualifying morphological properties of these objects, however, remain flexible due […]

Notes & Essays

Basics of Calculus

October 9, 2015October 21, 2016

This is a one-page note on the basics of calculus. Introduction to the study of change, Differential Calculus, Integral Calculus, Fundamental Theorem of […]

Notes & Essays

Isochron Dating Method for Dummies (Like Me)

October 9, 2015October 21, 2016

Discussion of radiometric dating method after article by Young (2007). Click on the title image to open this note in […]

Research

DStation 0.5

October 8, 2015April 10, 2017

DStation is a BSD licensed cross-platform software implementing various image deconvolution methods described in J. S. Lim, “Two-dimensional signal and […]

Notes & Essays

On the White Dwarf Mass Limit and S. Chandrasekhar

October 21, 2014October 21, 2016

Subrahmanyan Chandrasekhar (1910–1995) was born into a Brahmin family in Lahore, then India. At the age as early as 21, […]

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