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HD 222996


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관련 글

The late A-type stars - Refined MK classification, confrontation with Stromgren photometry, and the effects of rotation
The MK spectral classification for late A-type stars is refined and theeffects of rotation of spectral classification and uvby(beta) photometryfor these stars are examined. It is found that, for A3 stars, the4417/4481 A wavelength ratio produces results that are inconsistent withthe Stark broadening of the H lines. It is suggested that this ratio isnot useful as a luminosity criterion at any spectral type.Self-consistent sequences of narrow- and broadline standards areestablished. The results of the refined classification system arecompared with Stromgren photometry, showing a set of low-v sin i A-typestars with anomalously large delta(c1) indices for theirluminosity types. It is proposed that these stars are rapid rotatorsseen at fairly low inclination angles.

A finding list of early-type stars near the south galactic pole.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1971AJ.....76..338S&db_key=AST

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관측 및 측정 데이터

별자리:조각가자리
적경:23h45m52.73s
적위:-32°55'37.8"
가시등급:8.183
거리:325.733 파섹
적경상의 고유운동:3.9
적위상의 고유운동:2.8
B-T magnitude:8.405
V-T magnitude:8.202

천체목록:
일반명   (Edit)
HD 1989HD 222996
TYCHO-2 2000TYC 7518-630-1
USNO-A2.0USNO-A2 0525-44354850
HIPHIP 117204

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