Kevin R. Wagner, J. Leisenring, G. Cugno, Camryn Mullin, Ruobing Dong, S. Wolff, Tom Greene, Doug Johnstone, Michael R. Meyer, C. Beichman, Martha Boyer, Scott Horner, K. Hodapp, Doug Kelly, Don McCarthy, Thomas L. Roellig, G. Rieke, Marcia J. Rieke, M. Sitko, J. Stansberry, Erick Young
{"title":"JWST/NIRCam 对年轻恒星天体的成像。I. 对围绕 MWC 758 的螺旋盘外部行星的约束","authors":"Kevin R. Wagner, J. Leisenring, G. Cugno, Camryn Mullin, Ruobing Dong, S. Wolff, Tom Greene, Doug Johnstone, Michael R. Meyer, C. Beichman, Martha Boyer, Scott Horner, K. Hodapp, Doug Kelly, Don McCarthy, Thomas L. Roellig, G. Rieke, Marcia J. Rieke, M. Sitko, J. Stansberry, Erick Young","doi":"10.3847/1538-3881/ad11d5","DOIUrl":null,"url":null,"abstract":"\n MWC 758 is a young star hosting a spiral protoplanetary disk. The spirals are likely companion-driven, and two previously identified candidate companions have been identified—one at the end the Southern spiral arm at ∼0.″6, and one interior to the gap at ∼0.″1. With JWST/NIRCam, we provide new images of the disk and constraints on planets exterior to ∼1″. We detect the two-armed spiral disk, a known background star, and a spatially resolved background galaxy, but no clear companions. The candidates that have been reported are at separations that are not probed by our data with sensitivity sufficient to detect them−nevertheless, these observations place new limits on companions down to ∼2 M\n Jup at ∼150 au and ∼0.5 M\n Jup at ≳600 au. Owing to the unprecedented sensitivity of JWST and youth of the target, these are among the deepest mass-detection limits yet obtained through direct imaging observations, and provide new insights into the system’s dynamical nature.","PeriodicalId":424210,"journal":{"name":"The Astronomical Journal","volume":"49 9","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"JWST/NIRCam Imaging of Young Stellar Objects. I. Constraints on Planets Exterior to the Spiral Disk Around MWC 758\",\"authors\":\"Kevin R. Wagner, J. Leisenring, G. Cugno, Camryn Mullin, Ruobing Dong, S. Wolff, Tom Greene, Doug Johnstone, Michael R. Meyer, C. Beichman, Martha Boyer, Scott Horner, K. Hodapp, Doug Kelly, Don McCarthy, Thomas L. Roellig, G. Rieke, Marcia J. Rieke, M. Sitko, J. Stansberry, Erick Young\",\"doi\":\"10.3847/1538-3881/ad11d5\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"\\n MWC 758 is a young star hosting a spiral protoplanetary disk. The spirals are likely companion-driven, and two previously identified candidate companions have been identified—one at the end the Southern spiral arm at ∼0.″6, and one interior to the gap at ∼0.″1. With JWST/NIRCam, we provide new images of the disk and constraints on planets exterior to ∼1″. We detect the two-armed spiral disk, a known background star, and a spatially resolved background galaxy, but no clear companions. The candidates that have been reported are at separations that are not probed by our data with sensitivity sufficient to detect them−nevertheless, these observations place new limits on companions down to ∼2 M\\n Jup at ∼150 au and ∼0.5 M\\n Jup at ≳600 au. Owing to the unprecedented sensitivity of JWST and youth of the target, these are among the deepest mass-detection limits yet obtained through direct imaging observations, and provide new insights into the system’s dynamical nature.\",\"PeriodicalId\":424210,\"journal\":{\"name\":\"The Astronomical Journal\",\"volume\":\"49 9\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-01-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"The Astronomical Journal\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.3847/1538-3881/ad11d5\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"The Astronomical Journal","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3847/1538-3881/ad11d5","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
MWC 758 是一颗承载着螺旋状原行星盘的年轻恒星。螺旋很可能是由伴星驱动的，之前已经确定了两个候选伴星--一个位于南旋臂末端的 ∼0.″6处，另一个位于缺口内部的 ∼0.″1处。利用JWST/NIRCam，我们提供了新的圆盘图像，并对位于∼1″外部的行星进行了约束。我们探测到了双臂螺旋盘、一颗已知背景恒星和一个空间解析背景星系，但没有发现明显的伴星。尽管如此，我们的观测结果还是对伴星做出了新的限制，即在∼150 au处的∼2 M Jup和在∼600 au处的∼0.5 M Jup。由于 JWST 史无前例的灵敏度和目标的年轻化，这些都是迄今为止通过直接成像观测获得的最深的质量探测极限，并为了解该系统的动力学性质提供了新的视角。
JWST/NIRCam Imaging of Young Stellar Objects. I. Constraints on Planets Exterior to the Spiral Disk Around MWC 758
MWC 758 is a young star hosting a spiral protoplanetary disk. The spirals are likely companion-driven, and two previously identified candidate companions have been identified—one at the end the Southern spiral arm at ∼0.″6, and one interior to the gap at ∼0.″1. With JWST/NIRCam, we provide new images of the disk and constraints on planets exterior to ∼1″. We detect the two-armed spiral disk, a known background star, and a spatially resolved background galaxy, but no clear companions. The candidates that have been reported are at separations that are not probed by our data with sensitivity sufficient to detect them−nevertheless, these observations place new limits on companions down to ∼2 M
Jup at ∼150 au and ∼0.5 M
Jup at ≳600 au. Owing to the unprecedented sensitivity of JWST and youth of the target, these are among the deepest mass-detection limits yet obtained through direct imaging observations, and provide new insights into the system’s dynamical nature.
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