시작하기     To Survive in the Universe    
Inhabited Sky
    News@Sky     천체사진     컬렉션     포럼     Blog New!     질문및답변     출판     로그인  

HD 90228


내용

사진

사진 업로드

DSS Images   Other Images


관련 글

New periodic variables from the Hipparcos epoch photometry
Two selection statistics are used to extract new candidate periodicvariables from the epoch photometry of the Hipparcos catalogue. Theprimary selection criterion is a signal-to-noise ratio. The dependenceof this statistic on the number of observations is calibrated usingabout 30000 randomly permuted Hipparcos data sets. A significance levelof 0.1 per cent is used to extract a first batch of candidate variables.The second criterion requires that the optimal frequency be unaffectedif the data are de-trended by low-order polynomials. We find 2675 newcandidate periodic variables, of which the majority (2082) are from theHipparcos`unsolved' variables. Potential problems with theinterpretation of the data (e.g. aliasing) are discussed.

새 글 등록


관련 링크

  • - 링크가 없습니다. -
새 링크 등록


다음 그룹에 속해있음:


관측 및 측정 데이터

별자리:공기펌프자리
적경:10h24m17.80s
적위:-35°38'50.1"
가시등급:8.349
거리:224.719 파섹
적경상의 고유운동:-9
적위상의 고유운동:6.1
B-T magnitude:8.751
V-T magnitude:8.383

천체목록:
일반명   (Edit)
HD 1989HD 90228
TYCHO-2 2000TYC 7196-361-1
USNO-A2.0USNO-A2 0525-13044084
HIPHIP 50948

→ VizieR에서 더 많은 목록을 가져옵니다.