Spectroscopic Observations of the 2011 Draconids Meteor Shower

Rudawska, Regina; Zender, Joe; Jenniskens, Peter; Vaubaillon, Jérémie; Koten, Pavel; Margonis, Anastasios; Tóth, Juraj; McAuliffe, Jonathan; Koschny, D.

doi:10.1007/s11038-014-9436-8

Cited by 14 publications

(8 citation statements)

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“…The present work represents the widest spectral study of midsized meteoroids and also includes a large sample of orbital and structural properties, enabling a more complex view of the analyzed meteoroid population. The presented results complement previous works focused on fainter meteors corresponding to approximately mm-sized bodies (Borovička 2001;Borovička et al 2005;Rudawska et al 2014;Jenniskens et al 2014), and bright fireballs often caused by meteoroids of over one meter in diameter that potentially break up and give rise to meteorites (Ceplecha et al 1993;Trigo-Rodriguez et al 2003;Madiedo et al 2013). We aim to define the spectral properties of mm-dm sized meteoroids and reveal the differences compared to mm-sized bodies studied by Borovička et al (2005) and Vojáček et al (2015).…”

Section: Introductionsupporting

confidence: 83%

“…Within wider surveys, these studies were mainly focused on fainter meteors (Borovička et al 2005;Vojáček et al 2015Vojáček et al , 2019. Other spectral analyses focused on individual meteor showers (Borovička 2010;Rudawska et al 2014;Madiedo Tables 5 and 6 are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/ et al 2014a; Matlovič et al 2017) or on linking specific spectral features with ablation properties (Bloxam & Campbell-Brown 2017;Vojáček et al 2019).…”

Section: Introductionmentioning

confidence: 99%

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Spectral and orbital survey of medium-sized meteoroids

Matlovič

Tóth

Rudawska

et al. 2019

A&A

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Aims. We investigate the spectra, material properties, and orbital distribution of millimeter-to decimeter-sized meteoroids. Our study aims to distinguish the characteristics of populations of differently sized meteoroids and reveal the heterogeneity of identified meteoroid streams. We verify the surprisingly large ratio of pure iron meteoroids on asteroidal orbits detected among mm-sized bodies. Methods. Emission spectra and multi-station meteor trajectories were collected within the AMOS network observations. The sample is based on 202 meteors of -1 to -14 magnitude, corresponding to meteoroids of mm to dm sizes. Meteoroid composition is studied by spectral classification based on relative intensity ratios of Na, Mg, and Fe and corresponding monochromatic light curves. Heliocentric orbits, trajectory parameters, and material strengths inferred from empirical K B and P E parameters were determined for 146 meteoroids.Results. An overall increase of Na content compared to the population of mm-sized meteoroids was detected, reflecting weaker effects of space weathering processes on larger meteoroids. The preservation of volatiles in larger meteoroids is directly observed. We report a very low ratio of pure iron meteoroids and the discovery of a new spectral group of Fe-rich meteors. The majority of meteoroids on asteroidal orbits were found to be chondritic. Thermal processes causing Na depletion and physical processes resulting in Na-rich spectra are described and linked to characteristically increased material strengths. Numerous major and minor shower meteors were identified in our sample, revealing various degrees of heterogeneity within Halley-type, ecliptical, and sungrazing meteoroid streams. Our results imply a scattered composition of the fragments of comet 2P/Encke and 109P/Swift-Tuttle. The largest disparities were detected within α-Capricornids of the inactive comet 169P/NEAT and δ-Aquarids of the sungrazing 96P/Machholz. We also find a spectral similarity between κ-Cygnids and Taurids, which could imply a similar composition of the parent objects of the two streams.A&A proofs: manuscript no. AA_2019_36093_p Fig. 1: Slovak part of the global AMOS network. Observations of the AMOS-Spec and AMOS stations by the Astronomical and Geophysical Observatory in Modra (AGO), Arborétum Tesárske Mlyňany (ARBO), Kysucké Nové Mesto (KNM), and Važec (VAZ) were used in this work. Red, green, and blue labels designate operating standard AMOS cameras, spectral stations, and planned stations.low-resolution meteor spectra , the rough composition (chondritic, achondritic, metallic) can be identified. We attempt to verify this hypothesis and try to look for additional information about the meteoroid nature and structure that can be revealed from determined orbital and atmospheric parameters.One of the most surprising results of the study by Borovička et al. (2005) was the large number of the detected pure-iron meteoroids, suggesting that iron meteoroids prevail among mmsized meteoroids on asteroidal orbits. These results are...

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Section: Introductionsupporting

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Spectral and orbital survey of medium-sized meteoroids

Matlovič

Tóth

Rudawska

et al. 2019

A&A

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“…Our paper is similar to recent similar studies of the relationship between various meteoroid streams and their parent bodies, i.e., cometary (Hajdukova et al 2015;Ishiguro et al 2015;Kornoš et al 2015;Rudawska et al 2016;Abedin et al 2015Abedin et al , 2017Abedin et al , 2018Babadzhanov et al 2017;Jenniskens et al 2017;Šegon et al 2017) and lately also asteroidal (Babadzhanov et al 2015a,b;Jopek 2015;Jopek & Williams 2015;Rudawska & Vaubaillon 2015;Olech et al 2016;Wiegert et al 2017;Dumitru et al 2018;Sergienko et al 2018a,b;Ye 2018;Guennoun et al 2019;Ryabova et al 2019). Some authors have attempted to work out or improve a method of prediction of particular shower, often on the basis of known parent body (Koten & Vaubaillon 2015;Ryabova 2016;Sugar et al 2017;Vaubaillon 2017;Ryabova & Rendtel 2018a,b).…”

Section: Introductionsupporting

confidence: 90%

Modeling of the meteoroid stream of comet C/1975 T2 and λ-Ursae Majorids

Hajduková

Neslušan

2019

A&A

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Aims. We study the meteoroid stream of the long-period comet C/1975 T2 (Suzuki-Saigusa-Mori). This comet was suggested as the parent body of the established λ-Ursae Majorid meteor shower, No. 524. Methods. We modeled 32 parts of a theoretical meteoroid stream of the parent comet considered. Each of our models is characterized with a single value of the evolutionary time and a single value of the strength of Poynting-Robertson effect. The evolutionary time ranges from 10 000 to 80 000 yr. It is the period during which the evolution of the stream part is followed. In each model, the dynamical evolution of 10 000 test particles was then followed, via a numerical integration, from the time of the modeling up to the present. At the end of the integration, we analyzed the mean orbital characteristics of particles in the orbits that approach the Earth’s orbit, which thus enabled us to predict a shower related to the parent comet. The predicted shower was subsequently compared with its observed counterparts. We separated the latter from the databases of real meteors. As well, we attempted to identify the predicted shower to a shower recorded in the International Astronomical Union Meteor Data Center (IAU MDC) list of all showers. Results. Almost all modeled parts of the stream of comet C/1975 T2 are identified with the corresponding real shower in three video-meteor databases. No real counterpart is found in the IAU MDC photographic or radio-meteor data. In the IAU MDC list of showers and in our current study, this shower is identified with the established λ-Ursae Majorid shower, No. 524. Hence, our modeling confirms the results of previous authors. At the same time we exclude an existence of other meteor shower associated with C/1975 T2.

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“…As briefly discussed in previous section, observations of meteor emission spectra can provide information on meteoroid composition. Generally, these studies are either focused on detailed analyses of exceptional fireballs and can provide relative element abundances [8,9,104], focus on characterization of meteoroid streams [105,106] and their parent bodies, or utilize larger datasets of low-resolution spectra to study variations of meteoroid composition from different orbital sources in the solar system [10,52,54,107]. Meteor spectra studies have revealed that the depletion of volatiles in meteoroids is mainly caused by solar radiation in close proximity of the Sun and partially by cosmic-ray irradiation in the Oort cloud [10].…”

Section: Meteor Observations and Meteoroid Population Studiesmentioning

confidence: 99%

Meteors: Light from Comets and Asteroids

Matlovič,

Tóth

2020

Preprint

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In studies of the oldest solar system bodies -comets and asteroids -it is their fragments -meteoroids -that provide the most accessible planetary material for detailed laboratory analysis in the form of dust particles or meteorites. Some asteroids and comets were visited by spacecrafts and returned interplanetary samples to Earth, while missions Hayabusa 2 and OSIRIX-REx visiting asteroids Ryugu and Bennu are ongoing. However, the lack of representative samples of comets and asteroids opens the space to gain more knowledge from direct observations of meteoroids. At collision with the Earth's atmosphere, meteoroids produce light phenomena known as meteors. Different methods can be used to observe meteors, allowing us to study small interplanetary fragments, which would otherwise remain undetected. Numerous impressive meteor showers, storms and meteorite impacts have occurred throughout the recorded history and can now be predicted and analyzed in much more detail. By understanding the dynamics, composition and physical properties of meteoroids, we are able to study the formation history and dynamical evolution of the solar system. This work presents an introduction to meteor astronomy, its fundamental processes and examples of current research topics.

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Spectroscopic Observations of the 2011 Draconids Meteor Shower

Cited by 14 publications

References 11 publications

Spectral and orbital survey of medium-sized meteoroids

Spectral and orbital survey of medium-sized meteoroids

Modeling of the meteoroid stream of comet C/1975 T2 and λ-Ursae Majorids

Meteors: Light from Comets and Asteroids

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