NICMOS Photometry of the Unusual Dwarf Planet Haumea and its Satellites

Abstract

We present here HST NICMOS F110W and F160W observations of Haumea, and its two satellites Hi'iaka and Namaka. From the measured (F110W-F160W) colours of -1.209 +/-0.004, -1.48 +/- 0.06, and -1.4 +/- 0.2 mag for each object, respectively, we infer that the 1.6 imcron water-ice absorption feature depths on Hi'iaka and Namaka are at least as deep as that of Haumea. The light-curve of Haumea is detected in both filters, and we find that the infrared colour is bluer by approximately 2-3% at the phase of the red spot. These observations suggest that the satellites of Haumea were formed from the collision that produced the Haumea collisional family.

arXiv comment7 Pages, 2 Figures, Accepted in Apj Letters

References in corpus (6)

• Photometric Observations Constraining the Size, Shape, and Albedo of 2003 El61, a Rapidly Rotating, Pluto-Sized Object in the Kuiper Belt
• Satellites of the largest Kuiper belt objects
• The Surface of 2003EL61 in the Near Infrared
• High Precision Photometry of Extreme KBO 2003 EL61
• Water Ice on the Satellite of Kuiper Belt Object 2003 EL61
• Detection of Additional Members of the 2003 EL61 Family via Infrared Spectroscopy

Cited by in corpus (18)

• "TNOs are Cool": A survey of the trans-Neptunian region X. Analysis of classical Kuiper belt objects from Herschel and Spitzer observations
• The Compositions of Kuiper Belt Objects
• Orbits and Masses of the Satellites of the Dwarf Planet Haumea = 2003 EL61
• Characterisation of candidate members of (136108) Haumea's family
• The size, density, and formation of the Orcus-Vanth system in the Kuiper belt
• The Creation of Haumea's Collisional Family
• The Mass, Orbit, and Tidal Evolution of the Quaoar-Weywot System
• Quaoar: A Rock in the Kuiper belt
• Medium-sized satellites of large Kuiper belt objects
• A unified model for age-velocity dispersion relations in Local Group galaxies: Disentangling ISM turbulence and latent dynamical heating
• High-contrast observations of 136108 Haumea. A crystalline water-ice multiple system
• "TNOs are Cool": A survey of the trans-Neptunian region XIV. Size/albedo characterization of the Haumea family observed with Herschel and Spitzer
• A Photometric System for Detection of Water and Methane Ices on Kuiper Belt Objects
• The dynamical evolution of dwarf planet (136108) Haumea's collisional family: General properties and implications for the trans-Neptunian belt
• Haumea's thermal emission revisited in the light of the occultation results
• Characterisation of candidate members of (136108) Haumea's family: II. Follow-up observations
• The Peculiar Photometric Properties of 2010 WG9: A Slowly-Rotating Trans-Neptunian Object from the Oort Cloud
• Spectral trends across the rings and inner moons of Uranus and Neptune from JWST NIRCam images