Dust Properties of Two New Cavity Structures Nearby Asymptotic Giant Branch Stars: The IRAS Survey

Abstract

We studied the dust properties of two cavity structures (namely FIC21+54 and FIC16-56) nearby Asymptotic Giant Branch stars using Infrared Astronomical Satellite (IRAS) maps. Dust color temperature, Planck function, dust mass, and visual extinction with their distribution within the region of interest were examined. The temperature of dust was found to lie in the range of 22.24 ± 0.81 K to 23.27 ± 0.21 K, and 25.12 ± 0.43 K to 26.17 ± 0.62 K, and the mass of dust was obtained within the range of 4.21 × 1026 kg to 3.6 × 1027 kg, and 2.1 × 1027 kg to 3.31 × 1028 kg, for FIC21+54 and FIC16-56, respectively. Some unusual behaviors on the distribution of dust temperature indicated the effect of nearby sources within the studied structures. Moreover, we observed the trend of dust particles along the major and minor diameters, and plots represented that the particles were oscillating with a sinusoidal pattern in both cavities. The negative slope between 25 µm and 60 µm in far-infrared spectral distribution was encountered for both structures, which portrayed less number density of particles in 60 µm band; interaction between AGB wind and the ambient interstellar medium could be the possible reason behind this. These findings support the prior results for two new cavity structures nearby AGB stars within the galactic plane -10° < b < +10°.

Study of dust properties nearby pulsar J0302+2252 using Iris, Akari and wise surveys

“…studied far infrared (60 µm and 100 µm) IRAS loop at -5 o Galactic latitude around pulsar J1627-5547 by taking different dust properties like Dust Color Temperature, Dust Mass, and Inclination angle and they conclude that the results are agreed with Gaussian similar works are also done by Chaudhary et al (2022). Several research has been performed exploring the properties of interstellar dust using the infrared data in the region near the Pulsars [10,11] , White Dwarfs [12,13] , AGB Star [14,15] , Supernova Remnants [16] , FIR loops [17,18] , FIR Cavities [19] , etc., using the data from IRAS, IRIS, and AKARI. In this work, we have studied the multiwavelength variation of dust color temperature together with dust mass near the pulsar J0302+2252 using IRIS, AKARI, and WISE surveys.…”

Properties of dust in the North - East part of Perseus Cloud within the open cluster IC 348 using data from IRIS and AKARI

“…In past, many research has been performed exploring the properties of interstellar dust using the infrared data in the region near the Pulsars [8,9], White Dwarfs [10,11], AGB Star [12,13], Supernova Remnants [14,15], FIR loops [16][17][18][, FIR Cavities [18,19], Isolated Nebula [20], etc., using the data from IRAS, IRIS and AKARI. In this work, we have used the data from IRIS and AKARI to explore the properties of dust within the molecular cloud.…”