2016MNRAS.462..867G

Query : 2016MNRAS.462..867G

2016MNRAS.462..867G - Mon. Not. R. Astron. Soc., 462, 867-875 (2016/October-2)

Composite circumstellar dust grains.

GUPTA R., VAIDYA D.B. and DUTTA R.

Abstract (from CDS):

We calculate the absorption efficiencies of composite silicate grains with inclusions of graphite and silicon carbide in the spectral range 5-25 µm. We study the variation in absorption profiles with volume fractions of inclusions. In particular we study the variation in the wavelength of peak absorption at 10 and 18 µm. We also study the variation of the absorption of porous silicate grains. We use the absorption efficiencies to calculate the infrared flux at various dust temperatures and compare with the observed infrared emission flux from the circumstellar dust around some M-type and asymptotic giant branch stars obtained from IRAS and a few stars from Spitzer satellite. We interpret the observed data in terms of the circumstellar dust grain sizes, shape, composition and dust temperature.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): circumstellar matter - circumstellar matter

Simbad objects: 19

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Number of rows : 19
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 V* UU For OH* 02 37 23.0624900808 -26 58 42.321061128   11.64 10.13 12.51 8.45 M9 61 0
2 * bet Pic PM* 05 47 17.0876901 -51 03 59.441135 4.13 4.03 3.86 3.74 3.58 A6V 2087 1
3 IRC +40156 OH* 06 33 15.7602909600 +40 42 50.988602196           M8 76 0
4 V* RX Pup Sy* 08 14 12.3039748200 -41 42 29.080069056   12.39 9.00     M5.5 211 1
5 V* LP Hya Mi* 09 25 51.1873788696 -24 00 37.758101076     14.5 11.39 7.98 M9 42 0
6 IRAS 10359-5955 AB* 10 37 48.1148846664 -60 11 35.465193996           M6 14 0
7 IRAS 11525-5057 AB* 11 55 02.7902214936 -51 14 39.981994578   15.470 14.017 13.352   O-rich 14 0
8 V* WX Ser Mi* 15 27 47.0420881992 +19 33 51.671456100       9.36   M8.5 215 0
9 OH 337.9+00.3 OH* 16 37 41.5071750210 -46 40 40.885094837       13.064   O-rich 31 0
10 IRC +10322 Mi* 17 14 19.3800359328 +08 56 02.846599620           M9-10 81 0
11 Hen 3-1475 PN 17 45 14.1819342984 -17 56 46.778166204       12.733   B7e 201 0
12 V* V2211 Oph Mi* 17 51 09.9501110976 -08 01 21.329631156     17     M9 55 0
13 * alf Lyr dS* 18 36 56.33635 +38 47 01.2802 0.03 0.03 0.03 0.07 0.10 A0V 2787 1
14 RAFGL 5552 Mi* 19 03 02.4112435488 -39 42 55.361778480       13.01 9.58 O-rich 14 1
15 IRAS 19240+3615 Mi* 19 25 50.7158822784 +36 21 31.438749240         12.243 O-rich 20 0
16 IRC +10420 pA* 19 26 48.0979492536 +11 21 16.758531216   13.98 11.66     F8Ia+e 492 0
17 V* V351 Pav Mi* 20 53 33.6347725272 -71 51 26.466976800       15.476   M8 31 0
18 RAFGL 5592 Mi* 21 10 07.5030597960 -38 31 04.095589800       13.62   M9 41 0
19 * alf PsA PM* 22 57 39.04625 -29 37 20.0533 1.31 1.25 1.16 1.11 1.09 A4V 1303 3

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