Description: 吸积是天体在引力作用下吸引其他物质（通常是气体或尘埃）的过程。吸积发生在许多不同的天文场景中，包括（但不限于）：黑洞吸积气体、双星系统中的主星吸积其伴星物质、年轻的恒星吸积其周围物质盘中的气体，以及星系吸积其他星系的恒星。

Related Terms:

• 活动星系核
• Binary Star
• 黑洞
• Protostar
• Accretion Disk
• Cataclysmic Variable

Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher
The translation of this term and its definition is still awaiting approval

The OAE Multilingual Glossary is a project of the IAU Office of Astronomy for Education (OAE) in collaboration with the IAU Office of Astronomy Outreach (OAO). The terms and definitions were chosen, written and reviewed by a collective effort from the OAE, the OAE Centers and Nodes, the OAE National Astronomy Education Coordinators (NAECs) and other volunteers. You can find a full list of credits here. All glossary terms and their definitions are released under a Creative Commons CC BY-4.0 license and should be credited to "IAU OAE".