Further lunar occultations results from the Trebur Observatory, 2021–24

IF 1.9 4区物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS

New Astronomy Pub Date : 2024-07-27 DOI:10.1016/j.newast.2024.102289

{"title":"Further lunar occultations results from the Trebur Observatory, 2021–24","authors":"","doi":"10.1016/j.newast.2024.102289","DOIUrl":null,"url":null,"abstract":"<div><p>Following up on our initial paper (Richichi and Ohlert, 2021), we report here on 60 lunar occultation events recorded between February 2021 and March 2024 at the Michael Adrian Observatorium. An improved version of the detector was employed for the present work. The program aims mainly at the direct measurement of the angular diameter of late-type stars, and the discovery or confirmation of binary stars with small separations. Among the results, we present first time angular diameter determinations for the late-type M giants IRC +20184 and BL Tau and for the bright carbon star TU Gem. Our diameter result for RX Cnc is the first determination outside the near-IR range. We also discovered or detected directly for the first time companions around SAO 79580, BL Tau again, and SAO 78643. The lunar occultation technique at our facility is capable to reach sources as faint as <span><math><mo>≈</mo></math></span> 10V magnitude with an angular resolution at the milliarcsecond level.</p></div>","PeriodicalId":54727,"journal":{"name":"New Astronomy","volume":null,"pages":null},"PeriodicalIF":1.9000,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1384107624001039/pdfft?md5=87c54c6a624308f0bc6941d3934cc2c9&pid=1-s2.0-S1384107624001039-main.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"New Astronomy","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1384107624001039","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}

引用次数: 0

Abstract

Following up on our initial paper (Richichi and Ohlert, 2021), we report here on 60 lunar occultation events recorded between February 2021 and March 2024 at the Michael Adrian Observatorium. An improved version of the detector was employed for the present work. The program aims mainly at the direct measurement of the angular diameter of late-type stars, and the discovery or confirmation of binary stars with small separations. Among the results, we present first time angular diameter determinations for the late-type M giants IRC +20184 and BL Tau and for the bright carbon star TU Gem. Our diameter result for RX Cnc is the first determination outside the near-IR range. We also discovered or detected directly for the first time companions around SAO 79580, BL Tau again, and SAO 78643. The lunar occultation technique at our facility is capable to reach sources as faint as $\approx$ 10 V magnitude with an angular resolution at the milliarcsecond level.

查看原文本刊更多论文

2021-24 年特雷伯天文台的进一步月掩结果

继我们最初的论文（Richichi 和 Ohlert，2021 年）之后，我们在此报告 2021 年 2 月至 2024 年 3 月期间在迈克尔-阿德里安天文台记录的 60 次月球掩星事件。本次工作使用了改进版探测器。该计划的主要目的是直接测量晚期恒星的角直径，以及发现或确认小间隔双星。在这些成果中，我们首次测定了晚M型巨星IRC +20184和BL Tau以及明亮碳星TU Gem的角直径。我们对 RX Cnc 的直径测定结果是首次在近红外范围之外进行的。我们还首次发现或直接探测到了 SAO 79580、BL Tau 和 SAO 78643 周围的伴星。我们设施的月球掩星技术能够以毫厘秒级的角分辨率观测到≈10 V等的暗源。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

New Astronomy 地学天文-天文与天体物理

CiteScore

4.00

自引率

10.00%

发文量

109

审稿时长

13.6 weeks

期刊介绍： New Astronomy publishes articles in all fields of astronomy and astrophysics, with a particular focus on computational astronomy: mathematical and astronomy techniques and methodology, simulations, modelling and numerical results and computational techniques in instrumentation. New Astronomy includes full length research articles and review articles. The journal covers solar, stellar, galactic and extragalactic astronomy and astrophysics. It reports on original research in all wavelength bands, ranging from radio to gamma-ray.