On the maximum amplitude of harmonics of an asteroid lightcurve

Harris, A. W.; Pravec, Petr; Galád, Adrián; Skiff, B.A.; Warner, B. D.; Világi, J.; Gajdoš, Š.; Carbognani, A.; Hornoch, Kamil; Kušnirák, Peter; Cooney jr., W. R.; Gross, J.; Terrell, D.; Higgins, D.; Bowell, E.; Koehn, B.W.

doi:https://dx.doi.org/10.1016/j.icarus.2014.03.004

Počet záznamů: 1

On the maximum amplitude of harmonics of an asteroid lightcurve

1.

SYSNO ASEP	0429291
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	On the maximum amplitude of harmonics of an asteroid lightcurve
Tvůrce(i)	Harris, A. W. (US) Pravec, Petr (ASU-R)_{RID, ORCID} Galád, Adrián (ASU-R)_RID Skiff, B.A. (US) Warner, B. D. (US) Világi, J. (SK) Gajdoš, Š. (SK) Carbognani, A. (IT) Hornoch, Kamil (ASU-R)_ORCID Kušnirák, Peter (ASU-R) Cooney jr., W. R. (US) Gross, J. (US) Terrell, D. (US) Higgins, D. (AU) Bowell, E. (US) Koehn, B.W. (US)
Zdroj.dok.	Icarus. - : Elsevier - ISSN 0019-1035 Roč. 235, June (2014), s. 55-59
Poč.str.	5 s.
Forma vydání	Tištěná - P
Jazyk dok.	eng - angličtina
Země vyd.	US - Spojené státy americké
Klíč. slova	asteroids ; asteroids rotation ; photometry
Vědní obor RIV	BN - Astronomie a nebeská mechanika, astrofyzika
CEP	GAP209/12/0229 GA ČR - Grantová agentura ČR
Institucionální podpora	ASU-R - RVO:67985815
UT WOS	000335291600005
DOI	10.1016/j.icarus.2014.03.004
Anotace	Most asteroid lightcurves are dominated by the second harmonic of the rotation period, caused by elongated shape. However, if the shape is not very elongate, other harmonics may dominate, leading to ambiguity of which is the true rotation period. We argue from geometry that at low phase angle, harmonics other than the second with amplitude exceeding resp. 0.4 magnitude are nearly impossible, so lightcurves with larger amplitude than that suggest a unique period dominated by the second harmonic, unless the spin is complex, non-principal axis rotation. On the other hand, lightcurves with amplitude less than 0.2–0.3 magnitudes can be dominated by other harmonics, especially the 4th and 6th, so the period may be ambiguous unless odd harmonics can be found to identify the true rotation period. We present examples of each, low and high amplitude ambiguities.
Pracoviště	Astronomický ústav
Kontakt	Radka Svašková, bibl@asu.cas.cz, Tel.: 323 620 326
Rok sběru	2015

Počet záznamů: 1