Near-infrared observations of active asteroid (3200) Phaethon reveal no evidence for hydration

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F20%3A10421665" target="_blank" >RIV/00216208:11320/20:10421665 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=_ZVNeHTJKF" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=_ZVNeHTJKF</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/s41467-020-15637-7" target="_blank" >10.1038/s41467-020-15637-7</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Near-infrared observations of active asteroid (3200) Phaethon reveal no evidence for hydration

Popis výsledku v původním jazyce

Asteroid (3200) Phaethon is an active near-Earth asteroid and the parent body of the Geminid Meteor Shower. Because of its small perihelion distance, Phaethon&apos;s surface reaches temperatures sufficient to destabilize hydrated materials. We conducted rotationally resolved spectroscopic observations of this asteroid, mostly covering the northern hemisphere and the equatorial region, beyond 2.5-mu m to search for evidence of hydration on its surface. Here we show that the observed part of Phaethon does not exhibit the 3-mu m hydrated mineral absorption (within 2 sigma). These observations suggest that Phaethon&apos;s modern activity is not due to volatile sublimation or devolatilization of phyllosilicates on its surface. It is possible that the observed part of Phaethon was originally hydrated and has since lost volatiles from its surface via dehydration, supporting its connection to the Pallas family, or it was formed from anhydrous material. The surface of active asteroid (3200) Phaethon, parent body of the Geminid meteor shower, reaches temperatures sufficient to destabilize hydrated materials. Here, the authors show that the northern hemisphere and the equatorial region of this asteroid reveal no evidence of hydration in the near-infrared spectra.

Název v anglickém jazyce

Near-infrared observations of active asteroid (3200) Phaethon reveal no evidence for hydration

Popis výsledku anglicky

Asteroid (3200) Phaethon is an active near-Earth asteroid and the parent body of the Geminid Meteor Shower. Because of its small perihelion distance, Phaethon&apos;s surface reaches temperatures sufficient to destabilize hydrated materials. We conducted rotationally resolved spectroscopic observations of this asteroid, mostly covering the northern hemisphere and the equatorial region, beyond 2.5-mu m to search for evidence of hydration on its surface. Here we show that the observed part of Phaethon does not exhibit the 3-mu m hydrated mineral absorption (within 2 sigma). These observations suggest that Phaethon&apos;s modern activity is not due to volatile sublimation or devolatilization of phyllosilicates on its surface. It is possible that the observed part of Phaethon was originally hydrated and has since lost volatiles from its surface via dehydration, supporting its connection to the Pallas family, or it was formed from anhydrous material. The surface of active asteroid (3200) Phaethon, parent body of the Geminid meteor shower, reaches temperatures sufficient to destabilize hydrated materials. Here, the authors show that the northern hemisphere and the equatorial region of this asteroid reveal no evidence of hydration in the near-infrared spectra.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/GC18-04514J" target="_blank" >GC18-04514J: Na hraně rozpadu - fyzikální vlastnosti rychle rotujících multikilometrových planetek</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Nature Communications [online]

ISSN

2041-1723

e-ISSN

—

Svazek periodika

11

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

—

Kód UT WoS článku

000531354500001

EID výsledku v databázi Scopus

2-s2.0-85083956215