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회원가입
서지반출
Spectroscopy of Early-Type Host Galaxies of Type Ia Supernovae
[STEP1]서지반출 형식 선택
파일형식
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서지도구
SNS
기타
[STEP2]서지반출 정보 선택
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취소
  • Spectroscopy of Early-Type Host Galaxies of Type Ia Supernovae
  • Spectroscopy of Early-Type Host Galaxies of Type Ia Supernovae
저자명
강이정,임동욱,김영로,정철,이영욱,Kang. Yijung,Lim. Dongwook,Kim. Young-Lo,Chung. Chul,Lee. Young-Wook
간행물명
천문학회보
권/호정보
2013년|38권 1호|pp.29-29 (1 pages)
발행정보
한국천문학회
파일정보
정기간행물|ENG|
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기타
이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
서지반출

기타언어초록

The presence of dark energy, suggested from Type Ia supernovae (SNe) cosmology, is the most pronounced astronomical discovery made during the past decade. The basic assumption of this discovery is that the look-back time evolution of SNe luminosity would be negligible after light-curve correction. Several recent works, however, show that there are some differences in Hubble residual among host galaxies having different morphology and mass, indicating that SNe luminosity might be affected by population age. In order to investigate this more directly, we are continuing the YONSEI (YOnsei Nearby Supernovae Evolution Investigation) project, where we are obtaining low-resolution spectra of some 60 nearby early-type host galaxies. The early-type galaxies are preferred because the mean population ages and metallicities can be estimated from the absorption lines, and they are less affected by dust extinction. In this talk, we will report our progress in determining the ages and metallicities of host galaxies to investigate their correlation with the Hubble residual.