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

HD 210396


내용

사진

사진 업로드

DSS Images   Other Images


관련 글

Model-independent measurements of bar pattern speeds
The pattern speed is one of the fundamental parameters that determinesthe structure of barred galaxies. This quantity is usually derived fromindirect methods or by employing model assumptions. The number of barpattern speeds derived using the model-independent Tremaine &Weinberg technique is still very limited. We present the results ofmodel-independent measurements of the bar pattern speed in four galaxiesranging in Hubble type from SB0 to SBbc. Three of the four galaxies inour sample are consistent with bars being fast rotators. The lack ofslow bars is consistent with previous observations and suggests thatbarred galaxies do not have centrally concentrated dark matter haloes.This contradicts simulations of cosmological structure formation andobservations of the central mass concentration in nonbarred galaxies.

새 글 등록


관련 링크

  • - 링크가 없습니다. -
새 링크 등록


다음 그룹에 속해있음:


관측 및 측정 데이터

별자리:두루미자리
적경:22h11m03.08s
적위:-40°16'52.1"
가시등급:7.842
거리:211.416 파섹
적경상의 고유운동:-55.5
적위상의 고유운동:-43
B-T magnitude:9.217
V-T magnitude:7.956

천체목록:
일반명   (Edit)
HD 1989HD 210396
TYCHO-2 2000TYC 7998-552-1
USNO-A2.0USNO-A2 0450-40086215
HIPHIP 109510

→ VizieR에서 더 많은 목록을 가져옵니다.