Alpha CVn (HIP 63125)
COR CAROLI
Sep: 19.2", Companion: mag 5.5
Range: 2.84 - 2.98, Period: 5.5d, Type: ACV
물리적 특성
위치 & 식별자
가시성
사용자 설정에서 관측지를 설정하세요 가시성 데이터를 확인할 수 있습니다.
광도 곡선
다중 항성계
접안렌즈 시야
Sep: 19.2″ · PA: 229° · 위=북, 왼쪽=동
분해됨 · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 3.1″
크기 비교
항성의 진화
분광 분류
헤르츠스프룽-러셀 도표
흑체 복사 스펙트럼
항성 흡수 스펙트럼
스펙트럼 유형을 기반으로 한 시뮬레이션 흡수 스펙트럼. 선 위에 마우스를 올려 원소를 식별하세요.
항성 참고사항
서베이 이미지
서베이 이미지 로드 중…
Alpha CVn (HIP 63125) 소개
설명
Cor Caroli is a chemically peculiar star of spectral type A0pSiEuHg at magnitude 2.90, the brightest star in Canes Venatici (the Hunting Dogs). Located about 110 light-years from Earth, it is the prototype of the Alpha2 Canum Venaticorum class of magnetic variable stars, with starspots of concentrated silicon, europium, and mercury. It is a wide double with a fainter companion visible in small telescopes.
관측 팁
Cor Caroli lies below the handle of the Big Dipper, about 7 degrees south of Alkaid. A small telescope reveals the companion (magnitude 5.5) about 19 arcseconds away. It is the starting point for finding the Whirlpool Galaxy (M51) and other Canes Venatici deep-sky objects. Best observed March through July.
역사
The name Cor Caroli means 'the Heart of Charles,' named by Edmund Halley in honor of King Charles I of England (some sources say Charles II). It is one of the few bright stars named after a modern historical figure rather than derived from Arabic or classical sources.
재미있는 사실
Cor Caroli defines an entire class of chemically peculiar variable stars. Its strong magnetic field concentrates rare elements into spots on its surface, causing small brightness variations as it rotates — a stellar version of sunspots, but driven by magnetic chemistry.