Infrared Detection and Spectroscopy of Embedded Supernovae in Actively Star Forming Galaxies

活跃恒星形成星系中嵌入式超新星的红外探测和光谱学

• 批准号: 0607737
• 负责人: Michael Skrutskie
• 金额: $ 11.22万
• 依托单位: University of Virginia Main Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-09-01 至 2010-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0607737&HistoricalAwards=false
• 关键词: Infrared; Detection; Spectroscopy; Embedded; Supernovae

AWARD NO: AST-0607737PI: Michael SkrutskieINSTITUTION: University of Virginia Main CampusTITLE: Infrared Detection and Spectroscopy of EmbeddedSupernovae in Actively Star Forming GalaxiesABSTRACTMassive stars are the likely energy sources powering starburst and interacting galaxieswhich therefore should be hosts to frequent supernova events. Yet, contrary toexpectations, surveys for supernovae among such galaxies have established rates whichare comparable to supernovae rates observed in more normal and/or isolated galaxies.However, the bulk of these surveys are also conducted at visible wavelengths whereobscuration by dust associated with star formation and competition from nuclear fluxmay result in observers "missing" supernovae. Here a supernova search program will beimplemented in the near infrared (Ks-band, 2.17 m) where the extinction by dust will besignificantly reduced and the supernovae themselves will be brighter. The survey will becarried out at the University of Virginia's Fan Mountain Observatory using the 31-inchtelescope and HAWAII-1 infrared camera (developed through an NSF Major ResearchInstrumentation grant). Fifty program galaxies, 30 with infrared luminosities in excess of 2x 1010LSun and within 32 Mpc, and 20 of the nearest galaxies more luminous than 1 x1010LSun, will be targeted and observed monthly for supernovae. Detected supernovaewill be fed to the PAIRITEL automated 1.3-meter telescope at Mt. Hopkins, AZ forsimultaneous J-, H-, and Ks-band imaging to determine light curves. Brighter supernovaewill also trigger target-of-opportunity spectroscopic observations with the TripleSpecnear-infrared spectrograph at the Apache Point Observatory 3.5-meter telescope. Theinfrared spectra and light curves will allow the classification of the supernovae as afunction of environment, which will in turn allow the progenitor populations to becharacterized. The overall goals are a better estimate of the local supernovae rate andmore extensive observations of spectroscopic signatures diagnostic of envelope structureand interaction with the surrounding medium.This work will support the training of a graduate student who will be responsible for thepost-commissioning science program with TripleSpec using data from the imagingsurvey which the student will also lead. This student will be deeply integrated into thefinal assembly and testing of TripleSpec and its commissioning at the telescope.Undergraduates from the University of Virginia will take part in the acquisition of data atthe Fan Mountain Observatory with hope of cultivating new instrumentalists in additionto astronomical observers.

奖项编号：AST-0607737 PI：Michael SkrutskieInstitution：University of Virginia Main CampusTitle：Infrared Detection and Spectroscopy of EmbeddedSupernovae in Active星星Forming Galaxies摘要大质量恒星可能是星暴和相互作用星系的能量来源，因此应该是频繁的超新星事件的宿主。然而，与预期相反，对此类星系中超新星的调查已经确定了与在更正常和/或孤立星系中观察到的超新星发生率相当的发生率。然而，这些调查大部分也是在可见光波长下进行的，其中与星星形成相关的尘埃的遮蔽以及核通量的竞争可能会导致观察者“错过”超新星。在这里，超新星搜索计划将在近红外（KS波段，2.17米）实施，其中尘埃的消光将显着减少，超新星本身将更加明亮。这项调查将在弗吉尼亚大学的范山天文台进行，使用31英寸望远镜和夏威夷-1红外相机（通过NSF主要研究仪器赠款开发）。50个计划星系，其中30个的红外光度超过2x 1010 LSun，在32 Mpc以内，20个最近的星系比1x 1010 LSun更明亮，将每月观测超新星。探测到的超新星将被送入位于Mt.的PAIRITEL自动1.3米望远镜。霍普金斯，AZ用于同时J-，H-和KS-波段成像，以确定光变曲线。更亮的超新星也将触发Apache Point天文台3.5米望远镜的TripleSpecnear红外光谱仪的机会目标光谱观测。红外光谱和光变曲线将允许超新星作为环境的函数进行分类，这反过来又将允许祖先群体的特征。总体目标是更好地估计当地的超新星率和更广泛的观测光谱特征，诊断信封结构和与周围介质的相互作用.这项工作将支持培训的研究生谁将负责后调试科学计划与TripleSpec使用的数据从成像调查，学生也将领导.这名学生将深入参与TripleSpec的最终组装和测试以及在望远镜上的调试。弗吉尼亚大学的本科生将参与矾山天文台的数据采集，希望培养除了天文观测员之外的新仪器操作员。