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

HD 112351


내용

사진

사진 업로드

DSS Images   Other Images


관련 글

The Presence of Diffuse Interstellar Bands in the Spectra of Cool Stars
Data from the Kitt Peak National Observatory (KPNO) coudé feedtelescope were used to analyze the strength of three well-known diffuseinterstellar bands (DIBs; 5780, 5797, and 6614 Å). Ten mid-A,mid-F, and mid-G stars with moderate reddening (EB-V=0.2-1.2)were observed, along with one reddened B0 dwarf for comparison.Synthetic spectra were calculated to remove the interference of stellarfeatures. We report the detection of all three DIBs in A, F, and Gstars. We also find the correlation of DIB strengths with E(B-V), in oursight lines, to be consistent with previous results from Herbig (1993),demonstrating that DIB strength is not dependent on the spectral type ofthe target star.

Effective temperature scale and bolometric corrections from 2MASS photometry
We present a method to determine effective temperatures, angularsemi-diameters and bolometric corrections for population I and II FGKtype stars based on V and 2MASS IR photometry. Accurate calibration isaccomplished by using a sample of solar analogues, whose averagetemperature is assumed to be equal to the solar effective temperature of5777 K. By taking into account all possible sources of error we estimateassociated uncertainties to better than 1% in effective temperature andin the range 1.0-2.5% in angular semi-diameter for unreddened stars.Comparison of our new temperatures with other determinations extractedfrom the literature indicates, in general, remarkably good agreement.These results suggest that the effective temperaure scale of FGK starsis currently established with an accuracy better than 0.5%-1%. Theapplication of the method to a sample of 10 999 dwarfs in the Hipparcoscatalogue allows us to define temperature and bolometric correction (Kband) calibrations as a function of (V-K), [m/H] and log g. Bolometriccorrections in the V and K bands as a function of T_eff, [m/H] and log gare also given. We provide effective temperatures, angularsemi-diameters, radii and bolometric corrections in the V and K bandsfor the 10 999 FGK stars in our sample with the correspondinguncertainties.

The Tokyo PMC catalog 90-93: Catalog of positions of 6649 stars observed in 1990 through 1993 with Tokyo photoelectric meridian circle
The sixth annual catalog of the Tokyo Photoelectric Meridian Circle(PMC) is presented for 6649 stars which were observed at least two timesin January 1990 through March 1993. The mean positions of the starsobserved are given in the catalog at the corresponding mean epochs ofobservations of individual stars. The coordinates of the catalog arebased on the FK5 system, and referred to the equinox and equator ofJ2000.0. The mean local deviations of the observed positions from theFK5 catalog positions are constructed for the basic FK5 stars to comparewith those of the Tokyo PMC Catalog 89 and preliminary Hipparcos resultsof H30.

새 글 등록


관련 링크

  • - 링크가 없습니다. -
새 링크 등록


다음 그룹에 속해있음:


관측 및 측정 데이터

별자리:용자리
적경:12h55m04.79s
적위:+64°11'49.6"
가시등급:8.735
거리:188.324 파섹
적경상의 고유운동:-38.5
적위상의 고유운동:16
B-T magnitude:9.097
V-T magnitude:8.765

천체목록:
일반명   (Edit)
HD 1989HD 112351
TYCHO-2 2000TYC 4165-734-1
USNO-A2.0USNO-A2 1500-05615491
HIPHIP 63042

→ VizieR에서 더 많은 목록을 가져옵니다.