Near-infrared spectral monitoring of Pluto's ices II: Recent decline of CO and N2 ice absorptions

被引：14

作者：

Grundy, W. M. ^{[1
]}

Olkin, C. B. ^{[2
]}

Young, L. A. ^{[2
]}

Holler, B. J. ^{[3
]}

机构：

[1] Lowell Observ, Flagstaff, AZ 86001 USA

[2] Southwest Res Inst, Boulder, CO 80302 USA

[3] Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80303 USA

来源：

ICARUS | 2014年 / 235卷

关键词：

Pluto; surface; Ices; IR spectroscopy; Spectroscopy; NITROGEN ICE; SURFACE; METHANE; TRITON; SPECTROGRAPH; TEMPERATURE; EVOLUTION; CHARON; SPEX;

D O I：

10.1016/j.icarus.2014.02.025

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

IRTF/SpeX observations of Pluto's near-infrared reflectance spectrum during 2013 show vibrational absorption features of CO and N-2 ices at 1.58 and 2.15 mu m, respectively, that are weaker than had been observed during the preceding decade. To reconcile declining volatile ice absorptions with a lack of decline in Pluto's atmospheric pressure, we suggest these ices could be getting harder to see because of increasing scattering by small CH4 crystals, rather than because they are disappearing from the observed hemisphere. (C) 2014 Elsevier Inc. All rights reserved.

引用

页码：220 / 224

页数：5

共 19 条

[1] Near-infrared spectral monitoring of Pluto's ices: Spatial distribution and secular evolution
Grundy, W. M.
Olkin, C. B.
Young, L. A.
Buie, M. W.
Young, E. F.
ICARUS, 2013, 223 (02) : 710 - 721
[2] Near-infrared spectral monitoring of Triton with IRTF/SpeX II: Spatial distribution and evolution of ices
Grundy, W. M.
Young, L. A.
Stansberry, J. A.
Buie, M. W.
Olkin, C. B.
Young, E. F.
ICARUS, 2010, 205 (02) : 594 - 604
[3] Near-Infrared Vibrational Frequencies of HCN, HNC, and CN in N2 and Ar Ice Matrices
Fayolle, Edith C.
Johnson, Paul V.
Hodyss, Robert
Zhang, Xu
Sander, Stanley P.
ACS EARTH AND SPACE CHEMISTRY, 2024, 8 (02): : 303 - 309
[4] NEAR-INFRARED BAND STRENGTHS OF MOLECULES DILUTED IN N2 AND H2O ICE MIXTURES RELEVANT TO INTERSTELLAR AND PLANETARY ICES
Richey, C. R.
Gerakines, P. A.
ASTROPHYSICAL JOURNAL, 2012, 759 (01)
[5] Distribution and evolution of CH4, N2, and CO ices on Pluto's surface:: 1995 to 1998
Grundy, WM
Buie, MW
ICARUS, 2001, 153 (02) : 248 - 263
[6] OPTICAL CONSTANTS OF NH3 AND NH3:N2 AMORPHOUS ICES IN THE NEAR-INFRARED AND MID-INFRARED REGIONS
Zanchet, Alexandre
Rodriguez-Lazcano, Yamilet
Galvez, Oscar
Herrero, Victor J.
Escribano, Rafael
Mate, Belen
ASTROPHYSICAL JOURNAL, 2013, 777 (01)
[7] 1I/'Oumuamua as an N2 Ice Fragment of an Exo-Pluto Surface II: Generation of N2 Ice Fragments and the Origin of 'Oumuamua
Desch, S. J.
Jackson, A. P.
JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS, 2021, 126 (05)
[8] Broadband spectroscopy of astrophysical ice analogues II. Optical constants of CO and CO2 ices in the terahertz and infrared ranges
Gavdush, A. A.
Kruczkiewicz, F.
Giuliano, B. M.
Mueller, B.
Komandin, G. A.
Grassi, T.
Theule, P.
Zaytsev, K., I
Ivlev, A., V
Caselli, P.
ASTRONOMY & ASTROPHYSICS, 2022, 667
[9] Near-infrared spectra of laboratory H2O-CH4 ice mixtures S.2005.10.021
Bernstein, MP
Cruikshank, DP
Sandford, SA
ICARUS, 2006, 181 (01) : 302 - 308
[10] Near-infrared laboratory spectra of solid H2O/CO2 and CH3OH/CO2 ice mixtures
Bernstein, MP
Cruikshank, DP
Sandford, SA
ICARUS, 2005, 179 (02) : 527 - 534

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