Activity in quasi-Hilda objects: A photometric approach

IF 2.5 2区物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS

Icarus Pub Date : 2025-05-20 DOI:10.1016/j.icarus.2025.116634

E. García-Migani, R. Gil-Hutton, J. Correa-Otto

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引用次数: 0

Abstract

We present the results of a search for quasi-Hilda objects that could be candidates for exhibiting cometary activity. To achieve this, observations of objects from the quasi-Hilda region in the MPCAT-OBS Observation Archive were examined. We then analyzed the observed brightness and compared it with the expected values, looking for discrepancies between the two (

Δ_{m a g}

). These deviations from their expected brightness could be the result of weak cometary-like activity that does not manifest as an observable coma and/or tail. The

Δ_{m a g}

values were analyzed and evaluated for objects in the quasi-Hilda region. We believe that the objects

(30512) 2001 H O_{8}

(18916) 2000 O G_{44}

, and

2017 F U_{158}

are interesting candidates for searching for activity in the quasi-Hilda region. Additionally, some unnumbered objects are also noted as potentially interesting, although they have few observations.

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准希尔达天体的活动：光度法

我们提出了一项搜索准希尔达天体的结果，这些天体可能是展示彗星活动的候选者。为了实现这一目标，我们对MPCAT-OBS观测档案中来自准希尔达区的天体进行了研究。然后，我们分析观测到的亮度，并将其与期望值进行比较，寻找两者之间的差异（Δmag）。这些偏离预期亮度的现象可能是类似彗星的微弱活动的结果，而这种活动并没有表现为可观察到的彗发和/或彗尾。对拟希尔达区对象的Δmag值进行了分析和评价。我们认为（30512）2001HO8, (18916)2000OG44和2017FU158是在准希尔达区域寻找活动的有趣候选者。此外，一些未编号的物体也被认为是潜在的有趣的，尽管它们很少被观察到。

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来源期刊

Icarus 地学天文-天文与天体物理

CiteScore

6.30

自引率

18.80%

发文量

356

审稿时长

2-4 weeks

期刊介绍： Icarus is devoted to the publication of original contributions in the field of Solar System studies. Manuscripts reporting the results of new research - observational, experimental, or theoretical - concerning the astronomy, geology, meteorology, physics, chemistry, biology, and other scientific aspects of our Solar System or extrasolar systems are welcome. The journal generally does not publish papers devoted exclusively to the Sun, the Earth, celestial mechanics, meteoritics, or astrophysics. Icarus does not publish papers that provide "improved" versions of Bode''s law, or other numerical relations, without a sound physical basis. Icarus does not publish meeting announcements or general notices. Reviews, historical papers, and manuscripts describing spacecraft instrumentation may be considered, but only with prior approval of the editor. An entire issue of the journal is occasionally devoted to a single subject, usually arising from a conference on the same topic. The language of publication is English. American or British usage is accepted, but not a mixture of these.