Infrared high spatial resolution study of the PN hen 2-113

E. Lagadec; O. Chesneau; M. Matsuura; O. De Marco; J. A. De Freitas Pacheco; A. A. Zijlstra; A. Acker; G. C. Clayton

doi:10.1063/1.2146276

Infrared high spatial resolution study of the PN hen 2-113

E. Lagadec^*, O. Chesneau, M. Matsuura, O. De Marco, J. A. De Freitas Pacheco, A. A. Zijlstra, A. Acker, G. C. Clayton

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution

Abstract

We report infrared observations of the planetary nebula Hen 2-113 obtained with VLT/NACO, VLTI/MIDI, VLT/ISAAC and TIMMI at the ESO 3.6m. Hen 2-113 exhibits a clear ring-like structure superimposed to a more diffuse environment visible in the L′ (3.8 μm), M′ (4.78 μm) and 8.7 μm bands. No clear core at 8.7 μm and no fringes through the N band could be detected for this object with MIDI. A qualitative interpretation of the object structure is proposed using a diabolo-like geometrical model. Our ISAAC and TIMMI observations indicate that the PAHs are mostly concentrated towards the lobes of the diabolo and the bipolar lobes of the nebula. In L′ band, a void 0.3″ in diameter was discovered with NACO around the central source. The L′ and M′ fluxes from the central source were derived from NACO data indicating an important infrared excess with respect to the expected stellar emission based on stellar models and short wavelength data. The observed flux from this source in the L′ and M′ is about 300 and 800 times higher, respectively, than those expected from a model including only the central star. Moreover, the central object appears resolved in L′ band with measured FWHM about 155 mas. This infrared excess can be explained by emission from a cocoon of hot dust (T∼900K) with a total mass ∼ 10^-9M _⊙.

Original language	English
Title of host publication	Planetary nebulae as astronomical tools
Subtitle of host publication	international conference on planetary nebulae as astronomical tools
Editors	Ryszard Szczebra, Grażyna Stasińska, Sławomir K. Górny
Place of Publication	Melville, NY
Publisher	American Institute of Physics
Pages	210
Number of pages	1
Volume	804
Edition	Issue 1
ISBN (Print)	0735402949, 9780735402942
DOIs	https://doi.org/10.1063/1.2146276
Publication status	Published - 28 Nov 2005
Externally published	Yes
Event	International Conference on Planetary Nebulae as Astronomical Tools - Gdansk, Poland Duration: 28 Jun 2005 → 2 Jul 2005

Other

Other	International Conference on Planetary Nebulae as Astronomical Tools
Country	Poland
City	Gdansk
Period	28/06/05 → 2/07/05

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10.1063/1.2146276

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Lagadec, E., Chesneau, O., Matsuura, M., De Marco, O., De Freitas Pacheco, J. A., Zijlstra, A. A., ... Clayton, G. C. (2005). Infrared high spatial resolution study of the PN hen 2-113. In R. Szczebra, G. Stasińska, & S. K. Górny (Eds.), Planetary nebulae as astronomical tools: international conference on planetary nebulae as astronomical tools (Issue 1 ed., Vol. 804, pp. 210). Melville, NY: American Institute of Physics. https://doi.org/10.1063/1.2146276

Lagadec, E. ; Chesneau, O. ; Matsuura, M. ; De Marco, O. ; De Freitas Pacheco, J. A. ; Zijlstra, A. A. ; Acker, A. ; Clayton, G. C. / Infrared high spatial resolution study of the PN hen 2-113. Planetary nebulae as astronomical tools: international conference on planetary nebulae as astronomical tools. editor / Ryszard Szczebra ; Grażyna Stasińska ; Sławomir K. Górny. Vol. 804 Issue 1. ed. Melville, NY : American Institute of Physics, 2005. pp. 210

@inproceedings{8e573e6ac38c443a834ff9e7b7419f6c,

title = "Infrared high spatial resolution study of the PN hen 2-113",

abstract = "We report infrared observations of the planetary nebula Hen 2-113 obtained with VLT/NACO, VLTI/MIDI, VLT/ISAAC and TIMMI at the ESO 3.6m. Hen 2-113 exhibits a clear ring-like structure superimposed to a more diffuse environment visible in the L′ (3.8 μm), M′ (4.78 μm) and 8.7 μm bands. No clear core at 8.7 μm and no fringes through the N band could be detected for this object with MIDI. A qualitative interpretation of the object structure is proposed using a diabolo-like geometrical model. Our ISAAC and TIMMI observations indicate that the PAHs are mostly concentrated towards the lobes of the diabolo and the bipolar lobes of the nebula. In L′ band, a void 0.3″ in diameter was discovered with NACO around the central source. The L′ and M′ fluxes from the central source were derived from NACO data indicating an important infrared excess with respect to the expected stellar emission based on stellar models and short wavelength data. The observed flux from this source in the L′ and M′ is about 300 and 800 times higher, respectively, than those expected from a model including only the central star. Moreover, the central object appears resolved in L′ band with measured FWHM about 155 mas. This infrared excess can be explained by emission from a cocoon of hot dust (T∼900K) with a total mass ∼ 10-9M ⊙.",

author = "E. Lagadec and O. Chesneau and M. Matsuura and {De Marco}, O. and {De Freitas Pacheco}, {J. A.} and Zijlstra, {A. A.} and A. Acker and Clayton, {G. C.}",

year = "2005",

month = "11",

day = "28",

doi = "10.1063/1.2146276",

language = "English",

isbn = "0735402949",

volume = "804",

pages = "210",

editor = "Ryszard Szczebra and Grażyna Stasińska and G{\'o}rny, {Sławomir K.}",

booktitle = "Planetary nebulae as astronomical tools",

publisher = "American Institute of Physics",

address = "United States",

edition = "Issue 1",

}

Lagadec, E, Chesneau, O, Matsuura, M, De Marco, O, De Freitas Pacheco, JA, Zijlstra, AA, Acker, A & Clayton, GC 2005, Infrared high spatial resolution study of the PN hen 2-113. in R Szczebra, G Stasińska & SK Górny (eds), Planetary nebulae as astronomical tools: international conference on planetary nebulae as astronomical tools. Issue 1 edn, vol. 804, American Institute of Physics, Melville, NY, pp. 210, International Conference on Planetary Nebulae as Astronomical Tools, Gdansk, Poland, 28/06/05. https://doi.org/10.1063/1.2146276

Infrared high spatial resolution study of the PN hen 2-113. / Lagadec, E.; Chesneau, O.; Matsuura, M.; De Marco, O.; De Freitas Pacheco, J. A.; Zijlstra, A. A.; Acker, A.; Clayton, G. C.

Planetary nebulae as astronomical tools: international conference on planetary nebulae as astronomical tools. ed. / Ryszard Szczebra; Grażyna Stasińska; Sławomir K. Górny. Vol. 804 Issue 1. ed. Melville, NY : American Institute of Physics, 2005. p. 210.

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution

TY - GEN

T1 - Infrared high spatial resolution study of the PN hen 2-113

AU - Lagadec, E.

AU - Chesneau, O.

AU - Matsuura, M.

AU - De Marco, O.

AU - De Freitas Pacheco, J. A.

AU - Zijlstra, A. A.

AU - Acker, A.

AU - Clayton, G. C.

PY - 2005/11/28

Y1 - 2005/11/28

N2 - We report infrared observations of the planetary nebula Hen 2-113 obtained with VLT/NACO, VLTI/MIDI, VLT/ISAAC and TIMMI at the ESO 3.6m. Hen 2-113 exhibits a clear ring-like structure superimposed to a more diffuse environment visible in the L′ (3.8 μm), M′ (4.78 μm) and 8.7 μm bands. No clear core at 8.7 μm and no fringes through the N band could be detected for this object with MIDI. A qualitative interpretation of the object structure is proposed using a diabolo-like geometrical model. Our ISAAC and TIMMI observations indicate that the PAHs are mostly concentrated towards the lobes of the diabolo and the bipolar lobes of the nebula. In L′ band, a void 0.3″ in diameter was discovered with NACO around the central source. The L′ and M′ fluxes from the central source were derived from NACO data indicating an important infrared excess with respect to the expected stellar emission based on stellar models and short wavelength data. The observed flux from this source in the L′ and M′ is about 300 and 800 times higher, respectively, than those expected from a model including only the central star. Moreover, the central object appears resolved in L′ band with measured FWHM about 155 mas. This infrared excess can be explained by emission from a cocoon of hot dust (T∼900K) with a total mass ∼ 10-9M ⊙.

AB - We report infrared observations of the planetary nebula Hen 2-113 obtained with VLT/NACO, VLTI/MIDI, VLT/ISAAC and TIMMI at the ESO 3.6m. Hen 2-113 exhibits a clear ring-like structure superimposed to a more diffuse environment visible in the L′ (3.8 μm), M′ (4.78 μm) and 8.7 μm bands. No clear core at 8.7 μm and no fringes through the N band could be detected for this object with MIDI. A qualitative interpretation of the object structure is proposed using a diabolo-like geometrical model. Our ISAAC and TIMMI observations indicate that the PAHs are mostly concentrated towards the lobes of the diabolo and the bipolar lobes of the nebula. In L′ band, a void 0.3″ in diameter was discovered with NACO around the central source. The L′ and M′ fluxes from the central source were derived from NACO data indicating an important infrared excess with respect to the expected stellar emission based on stellar models and short wavelength data. The observed flux from this source in the L′ and M′ is about 300 and 800 times higher, respectively, than those expected from a model including only the central star. Moreover, the central object appears resolved in L′ band with measured FWHM about 155 mas. This infrared excess can be explained by emission from a cocoon of hot dust (T∼900K) with a total mass ∼ 10-9M ⊙.

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U2 - 10.1063/1.2146276

DO - 10.1063/1.2146276

M3 - Conference proceeding contribution

SN - 0735402949

SN - 9780735402942

VL - 804

SP - 210

BT - Planetary nebulae as astronomical tools

A2 - Szczebra, Ryszard

A2 - Stasińska, Grażyna

A2 - Górny, Sławomir K.

PB - American Institute of Physics

CY - Melville, NY

ER -

Lagadec E, Chesneau O, Matsuura M, De Marco O, De Freitas Pacheco JA, Zijlstra AA et al. Infrared high spatial resolution study of the PN hen 2-113. In Szczebra R, Stasińska G, Górny SK, editors, Planetary nebulae as astronomical tools: international conference on planetary nebulae as astronomical tools. Issue 1 ed. Vol. 804. Melville, NY: American Institute of Physics. 2005. p. 210 https://doi.org/10.1063/1.2146276