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

HD 145917


내용

사진

사진 업로드

DSS Images   Other Images


관련 글

UBV(RI)C photometric monitoring of Orion population stars in the Southern Hemisphere
UBV(RI)C photometry on a sample of southern T Tauri stars, selected fromthe Herbig and Bell (1988) catalog, is reported and four new candidates(AS 205, Wa Oph/2, Wa Oph/3, and Wa CrA/2) for rotational modulation aresingled out from the sample. The color trend for the stars showingvariability is considered. Typically, colors become redder when the staris fainter, complying with the general behavior observed in T Tauristars. This can be interpreted as due to the (variable) presence ofsurface inhomogeneities (either dark or bright) or, in some cases, itcould also be consistent with the hypothesis of variable circumstellarextinction. Estimates of gross spot properties (e.g., temperature andfilling factor) are derived for the four stars showing possibleperiodicity, from the amplitudes of the variations observed at differentwavelengths, by use of a simple blackbody model.

새 글 등록


관련 링크

  • - 링크가 없습니다. -
새 링크 등록


다음 그룹에 속해있음:


관측 및 측정 데이터

별자리:전갈자리
적경:16h14m13.32s
적위:-18°50'12.5"
가시등급:8.666
거리:108.342 파섹
적경상의 고유운동:75.5
적위상의 고유운동:-123.6
B-T magnitude:9.496
V-T magnitude:8.735

천체목록:
일반명   (Edit)
HD 1989HD 145917
TYCHO-2 2000TYC 6209-1330-1
USNO-A2.0USNO-A2 0675-15400690
HIPHIP 79580

→ VizieR에서 더 많은 목록을 가져옵니다.