Characterizing Cold Brown Dwarf Atmospheres and Developing Precision Radial Velocity Technologies

表征冷棕矮星大气并开发精密径向速度技术

• 批准号: 1801978
• 负责人: Emily Martin
• 金额: $ 10万
• 依托单位: Martin Emily C
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-09-01 至 2021-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1801978&HistoricalAwards=false
• 关键词: Characterizing; Cold; Brown; Dwarf; Atmospheres

Emily Martin is awarded an NSF Astronomy and Astrophysics Postdoctoral Fellowship to conduct a program of research and education at the University of California, Santa Cruz. Using high resolution near-infrared spectra, Martin will measure the abundances of molecules in the atmospheres of brown dwarfs --- objects that are intermediate between low-mass stars and giant planets. She will also design a new precision radial velocity spectrograph that will be useful in the search for Earth-like planets around nearby stars. Alongside this research, Martin will conduct a summer workshop to help incoming freshmen succeed in physics classes and encourage them to pursue physics degrees. The proposed scientific program takes a two-pronged approach to advance the understanding of brown dwarf atmospheres. First, Martin will conduct spectroscopic observations of brown dwarf atmospheres and connect these observations to advanced imaging observations and atmospheric models. Second, she will lead the development of a conceptual design for a new, high-resolution near-infrared spectrograph for Lick Observatory. The new spectrograph will have a resolving power of nearly 100,000 at H and K bands (1.5-2.4 microns) and will be capable of working with any telescope with an adaptive optics system. For the education component of her work, Martin will develop a summer workshop for incoming students, in which she will use inquiry-based activities to engage the students, introduce them to local physicists working in a variety of careers, and connect them to peer mentors within the physics department.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

艾米丽马丁被授予美国国家科学基金会天文学和天体物理学博士后奖学金，在圣克鲁斯的加州大学进行研究和教育计划。 利用高分辨率近红外光谱，马丁将测量褐矮星大气中分子的丰度-介于低质量恒星和巨行星之间的天体。 她还将设计一个新的精密径向速度摄谱仪，这将有助于寻找附近恒星周围的类地行星。 除了这项研究，马丁将进行夏季研讨会，以帮助新生在物理课上取得成功，并鼓励他们追求物理学位。拟议中的科学计划采取双管齐下的方法来促进对褐矮星大气层的理解。 首先，马丁将对褐矮星大气进行光谱观测，并将这些观测与先进的成像观测和大气模型联系起来。 其次，她将领导为Lick天文台开发新的高分辨率近红外光谱仪的概念设计。 新的摄谱仪在H和K波段（1.5-2.4微米）的分辨率将接近100，000，并且能够与任何具有自适应光学系统的望远镜一起工作。 对于她工作的教育部分，马丁将为即将入学的学生开发一个夏季研讨会，在研讨会上，她将使用基于探究的活动来吸引学生，向他们介绍在各种职业中工作的当地物理学家，该奖项反映了NSF的法定使命，并被认为是值得通过使用基金会的智力价值和更广泛的影响审查标准。

项目成果

Transmission Spectroscopy of the Earth–Sun System to Inform the Search for Extrasolar Life

地球-太阳系统的透射光谱为寻找太阳系外生命提供信息

• DOI: 10.3847/psj/ac0c85
• 发表时间: 2021
• 期刊: The Planetary Science Journal
• 作者: Mayorga, L. C.;Lustig-Yaeger, J.;May, E. M.;Sotzen, Kristin S.;Gonzalez-Quiles, Junellie;Kilpatrick, Brian M.;Martin, Emily C.;Mandt, Kathleen;Stevenson, K. B.;Izenberg, N. R.
• 通讯作者: Izenberg, N. R.

Prospects for Characterizing the Haziest Sub-Neptune Exoplanets with High-resolution Spectroscopy

用高分辨率光谱表征最模糊的海王星亚系外行星的前景

• DOI: 10.3847/1538-3881/abb46b
• 发表时间: 2020
• 期刊: The Astronomical Journal
• 作者: Hood, Callie E.;Fortney, Jonathan J.;Line, Michael R.;Martin, Emily C.;Morley, Caroline V.;Birkby, Jayne L.;Rustamkulov, Zafar;Lupu, Roxana E.;Freedman, Richard S.
• 通讯作者: Freedman, Richard S.

Preliminary Trigonometric Parallaxes of 184 Late-T and Y Dwarfs and an Analysis of the Field Substellar Mass Function into the “Planetary” Mass Regime

• DOI: 10.3847/1538-4365/aaf6af
• 发表时间: 2018-12
• 期刊: The Astrophysical Journal Supplement Series
• 作者: J. Kirkpatrick;E. Martin;R. Smart;Alfred J. Cayago;C. Beichman;F. Marocco;C. Gelino;J. Faherty-

The Field Substellar Mass Function Based on the Full-sky 20 pc Census of 525 L, T, and Y Dwarfs

• DOI: 10.3847/1538-4365/abd107
• 发表时间: 2020-11
• 期刊: The Astrophysical Journal Supplement Series
• 作者: J. Kirkpatrick;C. Gelino;J. Faherty;A. Meisner;D. Caselden;A. Schneider;F. Marocco;Alfred J. Cayago;R. Smart;P. Eisenhardt;M. Kuchner;E. Wright;M. Cushing;K. Allers;D. B. Gagliuffi;A. Burgasser;J. Gagné;S. Logsdon;E. Martin;J. Ingalls;P. Lowrance;E. Abrahams;C. Aganze;R. Gerasimov;Eileen C. Gonzales;C. Hsu;N. Kamraj;Rocio Kiman;J. Rees;C. Theissen;Kareem Ammar;Nikolaj Stevnbak Andersen;Paul-André Beaulieu;G. Colin;C. Elachi;S. Goodman;Léopold Gramaize;Leslie K. Hamlet;Justin Hong;A. Jonkeren;Mohammed M. Khalil;David W. Martin;William Pendrill;Benjamin Pumphrey;A. Rothermich;Arttu Sainio;A. Stenner;Christopher Tanner;M. Thévenot;N. V. Voloshin;Jim Walla;Zbigniew Wędracki

Characterization and performance of the upgraded NIRSPEC on the W. M. Keck Telescope

W. M. Keck 望远镜升级版 NIRSPEC 的特性和性能

• DOI: 10.1117/12.2563075
• 发表时间: 2020
• 期刊: SPIE Astronomical Telescopes & Instrumentation 2020 Proceedings
• 作者: Lopez, Ronald A.;Hoffman, Erika;Doppmann, Gregory;Fitzgerald, Michael P.;Johnson, Chris;Kassis, Marc;Lanclos, Kyle;Lyke, Jim;Martin, Emily C.;McLean, Ian
• 通讯作者: McLean, Ian