The Structure of Chariklo's Rings from Stellar Occultations

D. Bérard, B. Sicardy, J. I.B. Camargo, J. Desmars, F. Braga-Ribas, J. L. Ortiz, R. Duffard, N. Morales, E. Meza, R. Leiva, G. Benedetti-Rossi, R. Vieira-Martins, A. R.Gomes Jnior, M. Assafin, F. Colas, J. L. Dauvergne, P. Kervella, J. Lecacheux, L. Maquet, F. VachierS. Renner, B. Monard, A. A. Sickafoose, H. Breytenbach, A. Genade, W. Beisker, K. L. Bath, H. J. Bode, M. Backes, V. D. Ivanov, E. Jehin, M. Gillon, J. Manfroid, J. Pollock, G. Tancredi, S. Roland, R. Salvo, L. Vanzi, D. Herald, D. Gault, S. Kerr, H. Pavlov, K. M. Hill, J. Bradshaw, M. A. Barry, A. Cool, B. Lade, A. Cole, J. Broughton, J. Newman, R. Horvat, D. Maybour, D. Giles, L. Davis, R. A. Paton, B. Loader, A. Pennell, P. D. Jaquiery, S. Brillant, F. Selman, C. Dumas, C. Herrera, G. Carraro, L. Monaco, A. Maury, A. Peyrot, J. P. Teng-Chuen-Yu, A. Richichi, P. Irawati, C. De Witt, P. Schoenau, R. Prager, C. Colazo, R. Melia, J. Spagnotto, A. Blain, S. Alonso, A. Román, P. Santos-Sanz, J. L. Rizos, J. L. Maestre, D. Dunham

Resultado de la investigación: Article

7 Citas (Scopus)

Resumen

Two narrow and dense rings (called C1R and C2R) were discovered around the Centaur object (10199) Chariklod uring a stellar occultation observed on 2013 June 3. Following this discovery, we planned observations of several occultations by Chariklos system in order to better characterize the physical properties of the ring and main body. Here, we use 12 successful occulations by Chariklo observed between 2014 and 2016. They provide ring profiles (physical width, opacity, edge structure) and constraints on the radii and pole position. Our new observations are currently consistent with the circular ring solution and pole position, to within the ±3.3 km formal uncertainty for the ring radii derived by Braga-Ribas et al. The six resolved C1R profiles reveal significant width variations from ∼5 to 7.5 km. The width of the fainter ring C2R is less constrained, and may vary between 0.1 and 1 km. The inner and outer edges of C1R are consistent with infinitely sharp boundaries, with typical upper limits of one kilometer for the transition zone between the ring and empty space. No constraint on the sharpness of C2Rs edges is available. A 1s upper limit of ∼20 m is derived for the equivalent width of narrow (physical width <4 km) rings up to distances of 12,000 km, counted in the ring plane.

Idioma originalEnglish
Número de artículo144
PublicaciónAstronomical Journal
Volumen154
N.º4
DOI
EstadoPublished - 1 oct 2017

Huella dactilar

stellar occultation
transition zone
physical property
rings
poles
radii
sharpness
occultation
profiles
opacity
physical properties

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Citar esto

Bérard, D., Sicardy, B., Camargo, J. I. B., Desmars, J., Braga-Ribas, F., Ortiz, J. L., ... Dunham, D. (2017). The Structure of Chariklo's Rings from Stellar Occultations. Astronomical Journal, 154(4), [144]. https://doi.org/10.3847/1538-3881/aa830d
Bérard, D. ; Sicardy, B. ; Camargo, J. I.B. ; Desmars, J. ; Braga-Ribas, F. ; Ortiz, J. L. ; Duffard, R. ; Morales, N. ; Meza, E. ; Leiva, R. ; Benedetti-Rossi, G. ; Vieira-Martins, R. ; Jnior, A. R.Gomes ; Assafin, M. ; Colas, F. ; Dauvergne, J. L. ; Kervella, P. ; Lecacheux, J. ; Maquet, L. ; Vachier, F. ; Renner, S. ; Monard, B. ; Sickafoose, A. A. ; Breytenbach, H. ; Genade, A. ; Beisker, W. ; Bath, K. L. ; Bode, H. J. ; Backes, M. ; Ivanov, V. D. ; Jehin, E. ; Gillon, M. ; Manfroid, J. ; Pollock, J. ; Tancredi, G. ; Roland, S. ; Salvo, R. ; Vanzi, L. ; Herald, D. ; Gault, D. ; Kerr, S. ; Pavlov, H. ; Hill, K. M. ; Bradshaw, J. ; Barry, M. A. ; Cool, A. ; Lade, B. ; Cole, A. ; Broughton, J. ; Newman, J. ; Horvat, R. ; Maybour, D. ; Giles, D. ; Davis, L. ; Paton, R. A. ; Loader, B. ; Pennell, A. ; Jaquiery, P. D. ; Brillant, S. ; Selman, F. ; Dumas, C. ; Herrera, C. ; Carraro, G. ; Monaco, L. ; Maury, A. ; Peyrot, A. ; Teng-Chuen-Yu, J. P. ; Richichi, A. ; Irawati, P. ; Witt, C. De ; Schoenau, P. ; Prager, R. ; Colazo, C. ; Melia, R. ; Spagnotto, J. ; Blain, A. ; Alonso, S. ; Román, A. ; Santos-Sanz, P. ; Rizos, J. L. ; Maestre, J. L. ; Dunham, D. / The Structure of Chariklo's Rings from Stellar Occultations. En: Astronomical Journal. 2017 ; Vol. 154, N.º 4.
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abstract = "Two narrow and dense rings (called C1R and C2R) were discovered around the Centaur object (10199) Chariklod uring a stellar occultation observed on 2013 June 3. Following this discovery, we planned observations of several occultations by Chariklos system in order to better characterize the physical properties of the ring and main body. Here, we use 12 successful occulations by Chariklo observed between 2014 and 2016. They provide ring profiles (physical width, opacity, edge structure) and constraints on the radii and pole position. Our new observations are currently consistent with the circular ring solution and pole position, to within the ±3.3 km formal uncertainty for the ring radii derived by Braga-Ribas et al. The six resolved C1R profiles reveal significant width variations from ∼5 to 7.5 km. The width of the fainter ring C2R is less constrained, and may vary between 0.1 and 1 km. The inner and outer edges of C1R are consistent with infinitely sharp boundaries, with typical upper limits of one kilometer for the transition zone between the ring and empty space. No constraint on the sharpness of C2Rs edges is available. A 1s upper limit of ∼20 m is derived for the equivalent width of narrow (physical width <4 km) rings up to distances of 12,000 km, counted in the ring plane.",
keywords = "ephemeredes, minor planets, asteroids: individual (Chariklo), occultations, planets and satellites: rings",
author = "D. B{\'e}rard and B. Sicardy and Camargo, {J. I.B.} and J. Desmars and F. Braga-Ribas and Ortiz, {J. L.} and R. Duffard and N. Morales and E. Meza and R. Leiva and G. Benedetti-Rossi and R. Vieira-Martins and Jnior, {A. R.Gomes} and M. Assafin and F. Colas and Dauvergne, {J. L.} and P. Kervella and J. Lecacheux and L. Maquet and F. Vachier and S. Renner and B. Monard and Sickafoose, {A. A.} and H. Breytenbach and A. Genade and W. Beisker and Bath, {K. L.} and Bode, {H. J.} and M. Backes and Ivanov, {V. D.} and E. Jehin and M. Gillon and J. Manfroid and J. Pollock and G. Tancredi and S. Roland and R. Salvo and L. Vanzi and D. Herald and D. Gault and S. Kerr and H. Pavlov and Hill, {K. M.} and J. Bradshaw and Barry, {M. A.} and A. Cool and B. Lade and A. Cole and J. Broughton and J. Newman and R. Horvat and D. Maybour and D. Giles and L. Davis and Paton, {R. A.} and B. Loader and A. Pennell and Jaquiery, {P. D.} and S. Brillant and F. Selman and C. Dumas and C. Herrera and G. Carraro and L. Monaco and A. Maury and A. Peyrot and Teng-Chuen-Yu, {J. P.} and A. Richichi and P. Irawati and Witt, {C. De} and P. Schoenau and R. Prager and C. Colazo and R. Melia and J. Spagnotto and A. Blain and S. Alonso and A. Rom{\'a}n and P. Santos-Sanz and Rizos, {J. L.} and Maestre, {J. L.} and D. Dunham",
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Bérard, D, Sicardy, B, Camargo, JIB, Desmars, J, Braga-Ribas, F, Ortiz, JL, Duffard, R, Morales, N, Meza, E, Leiva, R, Benedetti-Rossi, G, Vieira-Martins, R, Jnior, ARG, Assafin, M, Colas, F, Dauvergne, JL, Kervella, P, Lecacheux, J, Maquet, L, Vachier, F, Renner, S, Monard, B, Sickafoose, AA, Breytenbach, H, Genade, A, Beisker, W, Bath, KL, Bode, HJ, Backes, M, Ivanov, VD, Jehin, E, Gillon, M, Manfroid, J, Pollock, J, Tancredi, G, Roland, S, Salvo, R, Vanzi, L, Herald, D, Gault, D, Kerr, S, Pavlov, H, Hill, KM, Bradshaw, J, Barry, MA, Cool, A, Lade, B, Cole, A, Broughton, J, Newman, J, Horvat, R, Maybour, D, Giles, D, Davis, L, Paton, RA, Loader, B, Pennell, A, Jaquiery, PD, Brillant, S, Selman, F, Dumas, C, Herrera, C, Carraro, G, Monaco, L, Maury, A, Peyrot, A, Teng-Chuen-Yu, JP, Richichi, A, Irawati, P, Witt, CD, Schoenau, P, Prager, R, Colazo, C, Melia, R, Spagnotto, J, Blain, A, Alonso, S, Román, A, Santos-Sanz, P, Rizos, JL, Maestre, JL & Dunham, D 2017, 'The Structure of Chariklo's Rings from Stellar Occultations', Astronomical Journal, vol. 154, n.º 4, 144. https://doi.org/10.3847/1538-3881/aa830d

The Structure of Chariklo's Rings from Stellar Occultations. / Bérard, D.; Sicardy, B.; Camargo, J. I.B.; Desmars, J.; Braga-Ribas, F.; Ortiz, J. L.; Duffard, R.; Morales, N.; Meza, E.; Leiva, R.; Benedetti-Rossi, G.; Vieira-Martins, R.; Jnior, A. R.Gomes; Assafin, M.; Colas, F.; Dauvergne, J. L.; Kervella, P.; Lecacheux, J.; Maquet, L.; Vachier, F.; Renner, S.; Monard, B.; Sickafoose, A. A.; Breytenbach, H.; Genade, A.; Beisker, W.; Bath, K. L.; Bode, H. J.; Backes, M.; Ivanov, V. D.; Jehin, E.; Gillon, M.; Manfroid, J.; Pollock, J.; Tancredi, G.; Roland, S.; Salvo, R.; Vanzi, L.; Herald, D.; Gault, D.; Kerr, S.; Pavlov, H.; Hill, K. M.; Bradshaw, J.; Barry, M. A.; Cool, A.; Lade, B.; Cole, A.; Broughton, J.; Newman, J.; Horvat, R.; Maybour, D.; Giles, D.; Davis, L.; Paton, R. A.; Loader, B.; Pennell, A.; Jaquiery, P. D.; Brillant, S.; Selman, F.; Dumas, C.; Herrera, C.; Carraro, G.; Monaco, L.; Maury, A.; Peyrot, A.; Teng-Chuen-Yu, J. P.; Richichi, A.; Irawati, P.; Witt, C. De; Schoenau, P.; Prager, R.; Colazo, C.; Melia, R.; Spagnotto, J.; Blain, A.; Alonso, S.; Román, A.; Santos-Sanz, P.; Rizos, J. L.; Maestre, J. L.; Dunham, D.

En: Astronomical Journal, Vol. 154, N.º 4, 144, 01.10.2017.

Resultado de la investigación: Article

TY - JOUR

T1 - The Structure of Chariklo's Rings from Stellar Occultations

AU - Bérard, D.

AU - Sicardy, B.

AU - Camargo, J. I.B.

AU - Desmars, J.

AU - Braga-Ribas, F.

AU - Ortiz, J. L.

AU - Duffard, R.

AU - Morales, N.

AU - Meza, E.

AU - Leiva, R.

AU - Benedetti-Rossi, G.

AU - Vieira-Martins, R.

AU - Jnior, A. R.Gomes

AU - Assafin, M.

AU - Colas, F.

AU - Dauvergne, J. L.

AU - Kervella, P.

AU - Lecacheux, J.

AU - Maquet, L.

AU - Vachier, F.

AU - Renner, S.

AU - Monard, B.

AU - Sickafoose, A. A.

AU - Breytenbach, H.

AU - Genade, A.

AU - Beisker, W.

AU - Bath, K. L.

AU - Bode, H. J.

AU - Backes, M.

AU - Ivanov, V. D.

AU - Jehin, E.

AU - Gillon, M.

AU - Manfroid, J.

AU - Pollock, J.

AU - Tancredi, G.

AU - Roland, S.

AU - Salvo, R.

AU - Vanzi, L.

AU - Herald, D.

AU - Gault, D.

AU - Kerr, S.

AU - Pavlov, H.

AU - Hill, K. M.

AU - Bradshaw, J.

AU - Barry, M. A.

AU - Cool, A.

AU - Lade, B.

AU - Cole, A.

AU - Broughton, J.

AU - Newman, J.

AU - Horvat, R.

AU - Maybour, D.

AU - Giles, D.

AU - Davis, L.

AU - Paton, R. A.

AU - Loader, B.

AU - Pennell, A.

AU - Jaquiery, P. D.

AU - Brillant, S.

AU - Selman, F.

AU - Dumas, C.

AU - Herrera, C.

AU - Carraro, G.

AU - Monaco, L.

AU - Maury, A.

AU - Peyrot, A.

AU - Teng-Chuen-Yu, J. P.

AU - Richichi, A.

AU - Irawati, P.

AU - Witt, C. De

AU - Schoenau, P.

AU - Prager, R.

AU - Colazo, C.

AU - Melia, R.

AU - Spagnotto, J.

AU - Blain, A.

AU - Alonso, S.

AU - Román, A.

AU - Santos-Sanz, P.

AU - Rizos, J. L.

AU - Maestre, J. L.

AU - Dunham, D.

PY - 2017/10/1

Y1 - 2017/10/1

N2 - Two narrow and dense rings (called C1R and C2R) were discovered around the Centaur object (10199) Chariklod uring a stellar occultation observed on 2013 June 3. Following this discovery, we planned observations of several occultations by Chariklos system in order to better characterize the physical properties of the ring and main body. Here, we use 12 successful occulations by Chariklo observed between 2014 and 2016. They provide ring profiles (physical width, opacity, edge structure) and constraints on the radii and pole position. Our new observations are currently consistent with the circular ring solution and pole position, to within the ±3.3 km formal uncertainty for the ring radii derived by Braga-Ribas et al. The six resolved C1R profiles reveal significant width variations from ∼5 to 7.5 km. The width of the fainter ring C2R is less constrained, and may vary between 0.1 and 1 km. The inner and outer edges of C1R are consistent with infinitely sharp boundaries, with typical upper limits of one kilometer for the transition zone between the ring and empty space. No constraint on the sharpness of C2Rs edges is available. A 1s upper limit of ∼20 m is derived for the equivalent width of narrow (physical width <4 km) rings up to distances of 12,000 km, counted in the ring plane.

AB - Two narrow and dense rings (called C1R and C2R) were discovered around the Centaur object (10199) Chariklod uring a stellar occultation observed on 2013 June 3. Following this discovery, we planned observations of several occultations by Chariklos system in order to better characterize the physical properties of the ring and main body. Here, we use 12 successful occulations by Chariklo observed between 2014 and 2016. They provide ring profiles (physical width, opacity, edge structure) and constraints on the radii and pole position. Our new observations are currently consistent with the circular ring solution and pole position, to within the ±3.3 km formal uncertainty for the ring radii derived by Braga-Ribas et al. The six resolved C1R profiles reveal significant width variations from ∼5 to 7.5 km. The width of the fainter ring C2R is less constrained, and may vary between 0.1 and 1 km. The inner and outer edges of C1R are consistent with infinitely sharp boundaries, with typical upper limits of one kilometer for the transition zone between the ring and empty space. No constraint on the sharpness of C2Rs edges is available. A 1s upper limit of ∼20 m is derived for the equivalent width of narrow (physical width <4 km) rings up to distances of 12,000 km, counted in the ring plane.

KW - ephemeredes

KW - minor planets, asteroids: individual (Chariklo)

KW - occultations

KW - planets and satellites: rings

UR - http://www.scopus.com/inward/record.url?scp=85031126278&partnerID=8YFLogxK

U2 - 10.3847/1538-3881/aa830d

DO - 10.3847/1538-3881/aa830d

M3 - Article

AN - SCOPUS:85031126278

VL - 154

JO - Astronomical Journal

JF - Astronomical Journal

SN - 0004-6256

IS - 4

M1 - 144

ER -

Bérard D, Sicardy B, Camargo JIB, Desmars J, Braga-Ribas F, Ortiz JL y otros. The Structure of Chariklo's Rings from Stellar Occultations. Astronomical Journal. 2017 oct 1;154(4). 144. https://doi.org/10.3847/1538-3881/aa830d