SKY-MAP.ORG

To Survive in the Universe

질문및답변

HD 109400

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관련 글
관련 링크
그룹

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관련 글

Prediction of spectral classification from photometric observations - Application of the UVBY beta photometry and the MK spectra classification. II - General case Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1980A&A....85...93M&db_key=AST
Prediction of spectral classification from photometric observations-application to the UVBY beta photometry and the MK spectral classification. I - Prediction assuming a luminosity class An algorithm based on multiple stepwise and isotonic regressions isdeveloped for the prediction of spectral classification from photometricdata. The prediction assumes a luminosity class with reference touvbybeta photometry and the MK spectral classification. The precisionattained is about 90 percent and 80 percent probability of being withinone spectral subtype respectively for luminosity groups I and V and forluminosity groups III and IV. A list of stars for which discrepanciesappear between photometry and spectral classification is given.
Detection of errors in spectral classification by cluster analysis Cluster analysis methods are applied to the photometric catalogue ofuvby-beta measurements by Hauck and Lindemann (1973) and point out 249stars the spectral type of which should be reconsidered or thephotometric indices of which should be redetermined.
Spectral types and UBV photometry of G-K giants at the north galactic pole Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1973AJ.....78...37S&db_key=AST
Interstellar reddening near the north galactic pole Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1972PASP...84..497F&db_key=AST
The space distribution of late type stars in a North galactic pole region. Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1962AJ.....67...37U&db_key=AST

관련 링크

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새 링크 등록

다음 그룹에 속해있음:

관측 및 측정 데이터

별자리:	사냥개자리
적경:	12^h34^m03.41^s
적위:	+46Â°44'51.7"
가시등급:	7.299
거리:	317.46 파섹
적경상의 고유운동:	-54.1
적위상의 고유운동:	-32.1
B-T magnitude:	8.648
V-T magnitude:	7.411

천체목록:

일반명	(Edit)
HD 1989	HD 109400
TYCHO-2 2000	TYC 3456-1291-1
USNO-A2.0	USNO-A2 1350-08132981
HIP	HIP 61334

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