Abstract: The common practice in luminosity calibration of sample truncation according to relative parallax error λ can lead to bias with indirect methods such as ...
Abstract: In the recent literature there are indications of some confusion regarding the Lutz—Kelker bias: whether or not it exists, and if so, what it is and when it should be corrected. Here we ...
Publications of the Astronomical Society of the Pacific, Vol. 111, No. 763 (September 1999), pp. 1163-1168 (6 pages) ABSTRACT Trigonometric parallaxes of three planetary nebulae (A21, A29, and He 2‐11 ...
A history is given of the discovery between 1914 and 1935 of stars of intermediate luminosity between giants and dwarfs with spectral types between G0 to K3. The Mount Wilson spectroscopists ...
Solve the equation \(5\sin 2x^\circ + 7\cos x^\circ = 0\) for \(0^\circ \le x^\circ \le 360^\circ\) Which gives us solutions of \(90^\circ ,224.4^\circ ,270^\circ ,315.6^\circ\) There are two more ...
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