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논문 기본정보
The Demographics of galactic bulges in the SDSS database
논문 개요
| 기관명 | NDSL |
|---|---|
| 저널명 | 천문학회보 = The Bulletin of the Korean astronomical society |
| ISSN | 1226-2692, |
| ISBN |
논문저자 및 소속기관 정보
| 저자(한글) | Kim, Keunho,Oh, Sree,Jeong, Hyunjin,Aragon-Salamanca, Alfonso,Smith, Rory,Yi, Sukyoung K. |
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| 저자(영문) | |
| 소속기관 | |
| 소속기관(영문) | |
| 출판인 | |
| 간행물 번호 | |
| 발행연도 | 2016-01-01 |
| 초록 | We present a new database of our two-dimensional bulge-disk decompositions for 14,482 galaxies drawn from SDSS DR12 in order to examine the properties of bulges residing in the local universe (0.005 $B/T_r{ leq}0.3$ ). Bulges exhibit similar scaling relations to those followed by elliptical galaxies, but the bulges in galaxies with lower bulge-to-total ratios clearly show a gradually larger departure in slope from the elliptical galaxy sequence. The scatters around the scaling relations are also larger for the bulges in galaxies with lower bulge-to-total ratios. Both the departure in slopes and larger scatters are likely originated from the presence of young stars. While bulges seem largely similar in optical properties to elliptical galaxies, they do show clear and systematic departures as a function of bulge-to-total ratio. The stellar properties and perhaps associated formation processes of bulges seem much more diverse than those of elliptical galaxies. |
| 원문URL | http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=03553784&target=NART&cn=JAKO201615964635188 |
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