دورية أكاديمية
Dust from Comet 209P/LINEAR during its 2014 Return: Parent Body of a New Meteor Shower, the May Camelopardalids
| العنوان: | Dust from Comet 209P/LINEAR during its 2014 Return: Parent Body of a New Meteor Shower, the May Camelopardalids |
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| المؤلفون: | Ishiguro, Masateru, Kuroda, Daisuke, Hanayama, Hidekazu, Takahashi, Jun, Hasegawa, Sunao, Sarugaku, Yuki, Watanabe, Makoto, Imai, Masataka, Goda, Shuhei, Akitaya, Hiroshi, Takagi, Yuhei, Morihana, Kumiko, Honda, Satoshi, Arai, Akira, Sekiguchi, Kazuhiro, Oasa, Yumiko, Saito, Yoshihiko, Morokuma, Tomoki, Murata, Katsuhiro, Nogami, Daisaku, Nagayama, Takahiro, Yanagisawa, Kenshi, Yoshida, Michitoshi, Ohta, Kouji, Kawai, Nobuyuki, Miyaji, Takeshi, Fukushima, Hideo, Watanabe, Jun-Ichi, Opitom, Cyrielle, Jehin, Emmanuel, Gillon, Michaël, Vaubaillon, Jeremie J. |
| المصدر: | Astrophysical Journal. Letters, 798, L34 (2015-01-01) |
| بيانات النشر: | Institute of Physics Publishing, 2015. |
| سنة النشر: | 2015 |
| مصطلحات موضوعية: | comets: individual: 209P/LINEAR, interplanetary medium, Physical, chemical, mathematical & earth Sciences, Space science, astronomy & astrophysics, Physique, chimie, mathématiques & sciences de la terre, Aérospatiale, astronomie & astrophysique |
| الوصف: | We report a new observation of the Jupiter family comet 209P/LINEAR during its 2014 return. The comet is recognized as a dust source of a new meteor shower, the May Camelopardalids. 209P/LINEAR was apparently inactive at a heliocentric distance rh = 1.6 AU and showed weak activity at rh <= 1.4 AU. We found an active region of <0.001% of the entire nuclear surface during the comet's dormant phase. An edge-on image suggests that particles up to 1 cm in size (with an uncertainty of factor 3-5) were ejected following a differential power-law size distribution with index q = –3.25 ± 0.10. We derived a mass-loss rate of 2-10 kg s–1 during the active phase and a total mass of ≈5 × 107 kg during the 2014 return. The ejection terminal velocity of millimeter- to centimeter-sized particles was 1-4 m s–1, which is comparable to the escape velocity from the nucleus (1.4 m s–1). These results imply that such large meteoric particles marginally escaped from the highly dormant comet nucleus via the gas drag force only within a few months of the perihelion passage. |
| نوع الوثيقة: | journal article http://purl.org/coar/resource_type/c_6501Test article |
| اللغة: | English |
| العلاقة: | http://adsabs.harvard.edu/abs/2015ApJ...798L..34ITest; urn:issn:2041-8205; urn:issn:2041-8213 |
| DOI: | 10.1088/2041-8205/798/2/L34 |
| الوصول الحر: | https://orbi.uliege.be/handle/2268/176448Test |
| حقوق: | open access http://purl.org/coar/access_right/c_abf2Test info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsorb.176448 |
| قاعدة البيانات: | ORBi |
| DOI: | 10.1088/2041-8205/798/2/L34 |
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