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

HD 180002


내용

사진

사진 업로드

DSS Images   Other Images


관련 글

Southern subdwarf photometry
UBV photometry and normalized UV excesses are reported for 176 southernmetal-poor stars selected from the objective-prism survey of Bidelmanand MacConnell (1973) as well as 49 other metal-deficient starsidentified in other surveys. Photometry is also presented for 32 otherstars lying near the 225 program stars (although not explicitlyidentified as such in the text, the program stars are apparentlysubdwarfs and subdwarf candidates). Previously determined spectral typesand degrees of line weakening are given for the 225 stars, andmetallicities are estimated on the basis of the degrees of lineweakening. It is noted that 33 F and G stars with extreme meannormalized UV excesses of approximately 0.22 mag have a mean Fe/H valueof -1.4 and probably represent halo subdwarfs, while 82 F and G starswith moderate UV excesses are mostly old disk stars.

새 글 등록


관련 링크

  • - 링크가 없습니다. -
새 링크 등록


다음 그룹에 속해있음:


관측 및 측정 데이터

별자리:망원경자리
적경:19h16m56.21s
적위:-45°53'43.7"
가시등급:9.807
적경상의 고유운동:12.3
적위상의 고유운동:-32.3
B-T magnitude:10.302
V-T magnitude:9.848

천체목록:
일반명   (Edit)
HD 1989HD 180002
TYCHO-2 2000TYC 8375-1386-1
USNO-A2.0USNO-A2 0375-37475430
HIPHIP 94762

→ VizieR에서 더 많은 목록을 가져옵니다.