赎罪
发表于 2025-3-21 17:46:09
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triptans
发表于 2025-3-21 23:52:33
Book 1973ordoba in connection with the celebration of the Centennial of the Cordoba Observatory; the date of foundation is October 24, 1871. He proposed that the Symposium should deal with Spectral Classification and Multicolour Photometry as seven years had elapsed since the Symposium No. 24 in Saltsj6baden
课程
发表于 2025-3-22 01:29:07
The Role of Classification of Slit Spectrogramse future. The problems are so difficult — so many subtle differences between stars that we once thought of as identical are turning up now — that we must use every effective means of attack. The present challenge is to combine these methods most effectively.
Grievance
发表于 2025-3-22 08:07:49
Photometric Investigation of IC 2944xtremely high. Down to visual magnitude 11.5 the cluster seems to contain only O and B stars, the majority of spectral class earlier than B3. The Fabry-Pérot measurements give evidence of high internal gas motion. Evidently the gas is thin, visible only because of the great number of hot stars..Details will be published elsewhere.
champaign
发表于 2025-3-22 09:56:52
The Role of Classification of Slit Spectrogramsrophotometry, or by visual classification of spectrograms. In all cases we are trying to make direct estimates of as many physical properties of the stars as possible, and as nearly as I can judge, no one method has such exclusive advantages that it seems likely to replace all others in the immediat
极大的痛苦
发表于 2025-3-22 14:18:02
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Chameleon
发表于 2025-3-22 19:46:54
Quantitative Spectral Classification in the BCD System for LMC Supergiants the 152 cm ESO reflector at La Silla. The spectrophotometric parameters λ., ., .. and .. were measured and the first results deal with (a) spectral classification and (b) the distance modulus of the LMC.
谎言
发表于 2025-3-23 00:45:42
Photometric Investigation of IC 2944stars also Hβ has been measured. Slit spectra of intermediate dispersion (73 Å mm.) have been made for the 40 brightest stars. Coudé spectra (12 Å mm.) have been obtained for 8 stars. Fabry-Pérot measurements have been made in 5 points within the nebulosity. The number of blue stars is shown to be e
employor
发表于 2025-3-23 01:31:50
Spectral Classification Studies of Cepheids using a Small Telescope with an Image Tube Spectrographresult of a combination of the largest available light gathering power of large telescopes with the improved sensitivity of image intensifiers. We consider here the application of image tube techniques to moderate sized telescopes; concretely, we describe the first program of spectral classification
connoisseur
发表于 2025-3-23 08:53:39
Some Notes on Stars Near K0ut a comparison of the assigned types with ., ., . colors indicated both an intrinsic scatter in the colors for stars of similar spectroscopic appearance and a problem in either the luminosity classifications or the standard colors or both. Several peculiar stars and a luminous supergiant were also