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HD 44369


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Cepheids and nonvariable supergiants
Photometric parameters for Cepheids in a previous paper are adapted foruse with nonvariable supergiants of similar temperature. The closecorrelation between the abundance and luminosity parameters forclassical, short-period Cepheids (SPC) confirms the nearlydispersionless luminosity temperature relation for these variables. Theassumptions that (1) the C-type variables are transiting the Cepheidtemperature for the first time, (2) the classical SPC are mostlytransiting for the second time, and (3) the long-period Cepheids (LPC)are a mixture of stars transiting for the first to third or fourth timesare found to be consistent with the various correlations of temperatureand luminosity parameters. The nonvariable supergiants with photometricparameters similar to those for the Cepheids are found to haveluminosities consistent with their spectroscopic luminosity class. Few,if any, nonvariable supergiants have temperatures and luminositiessimilar to the LPC.

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观测天体数据

星座:御夫座
右阿森松:06h23m07.69s
赤纬:+36°04'51.9"
视星:9.616
右阿森松适当运动:-0.8
赤纬适当运动:-5.8
B-T magnitude:9.866
V-T magnitude:9.637

目录:
适当名称   (Edit)
HD 1989HD 44369
TYCHO-2 2000TYC 2433-997-1
USNO-A2.0USNO-A2 1200-04704999
HIPHIP 30359

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