Thermal Properties of 1847 WISE-observed Asteroids

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F22%3A10456626" target="_blank" >RIV/00216208:11320/22:10456626 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=17sEIg28ge" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=17sEIg28ge</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3847/PSJ/ac4d1f" target="_blank" >10.3847/PSJ/ac4d1f</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Thermal Properties of 1847 WISE-observed Asteroids

Popis výsledku v původním jazyce

We present new thermophysical model fits of 1847 asteroids, deriving thermal inertia, diameter, and Bond and visible geometric albedo. We use thermal flux measurements obtained by the Wide -field Infrared Survey Explorer (WISE) during its fully cryogenic phase, when both the 12 pm (W3) and 22 pm (W4) bands were available. We take shape models and spin information from the Database of Asteroid Models from Inversion Techniques (DAMIT) and derive new shape models through lightcurve inversion and combining WISE photometry with existing DAMIT lightcurves. When we limit our sample to the asteroids with the most reliable shape models and thermal flux measurements, we find broadly consistent thermal inertia relations with recent studies. We apply fits to the diameters D (km) and thermal inertia I&apos; (J m(-2) s(-0.5) K-1) normalized to 1 au with a linear relation of the form log[(sic)] = alpha + beta log [D], where we find a = 2.667 +/- 0.059 and beta = -0.467 +/- 0.044 for our sample alone and alpha = 2.509 +/- 0.017 and beta = -0.352 +/- 0.012 when combined with other literature estimates. We find little evidence of any correlation between rotation period and thermal inertia, owing to the small number of slow rotators to consider in our sample. While the large uncertainties on the majority of our derived thermal inertia only allow us to identify broad trends between thermal inertia and other physical parameters, we can expect a significant increase in high-quality thermal flux measurements and asteroid shape models with upcoming infrared and wide -field surveys, enabling even more thermophysical modeling of higher precision in the future.

Název v anglickém jazyce

Thermal Properties of 1847 WISE-observed Asteroids

Popis výsledku anglicky

We present new thermophysical model fits of 1847 asteroids, deriving thermal inertia, diameter, and Bond and visible geometric albedo. We use thermal flux measurements obtained by the Wide -field Infrared Survey Explorer (WISE) during its fully cryogenic phase, when both the 12 pm (W3) and 22 pm (W4) bands were available. We take shape models and spin information from the Database of Asteroid Models from Inversion Techniques (DAMIT) and derive new shape models through lightcurve inversion and combining WISE photometry with existing DAMIT lightcurves. When we limit our sample to the asteroids with the most reliable shape models and thermal flux measurements, we find broadly consistent thermal inertia relations with recent studies. We apply fits to the diameters D (km) and thermal inertia I&apos; (J m(-2) s(-0.5) K-1) normalized to 1 au with a linear relation of the form log[(sic)] = alpha + beta log [D], where we find a = 2.667 +/- 0.059 and beta = -0.467 +/- 0.044 for our sample alone and alpha = 2.509 +/- 0.017 and beta = -0.352 +/- 0.012 when combined with other literature estimates. We find little evidence of any correlation between rotation period and thermal inertia, owing to the small number of slow rotators to consider in our sample. While the large uncertainties on the majority of our derived thermal inertia only allow us to identify broad trends between thermal inertia and other physical parameters, we can expect a significant increase in high-quality thermal flux measurements and asteroid shape models with upcoming infrared and wide -field surveys, enabling even more thermophysical modeling of higher precision in the future.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

The Planetary Science Journal [online]

ISSN

2632-3338

e-ISSN

2632-3338

Svazek periodika

3

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

25

Strana od-do

56

Kód UT WoS článku

000914649100001

EID výsledku v databázi Scopus

2-s2.0-85140057571