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To understand how the evolution of grain size distribution in galaxies affects observed dust properties, we apply a post-processing dust evolution model to galaxy merger trees from the IllustrisTNG cosmological hydrodynamical simulation.…

星系天体物理 · 物理学 2022-04-20 Chiung-Yin Chang , Yu-Hsiu Huang , Hiroyuki Hirashita , Andrew P. Cooper

In this paper we present models for SSPs of intermediate and old ages where dust enshrouded AGB stars are introduced. To this aim, particular care is devoted to follow the evolution of the AGB stars throughout the quiet and thermally…

天体物理学 · 物理学 2009-11-10 Lorenzo Piovan , Rosaria Tantalo , Cesare Chiosi

To investigate the nature of starbursts' dust, we constructed a model of the stars and dust in starburst galaxies and applied it to 30 observed starburst spectral energy distributions (SEDs). The starburst model was constructed by combining…

天体物理学 · 物理学 2008-11-26 K. D. Gordon , D. Calzetti , A. N. Witt

There is evidence that some red supergiants (RSGs) experience short lived phases of extreme mass loss, producing copious amounts of dust. These episodic outburst phases help to strip the hydrogen envelope of evolved massive stars,…

太阳与恒星天体物理 · 物理学 2023-01-18 S. de Wit , A. Z. Bonanos , F. Tramper , M. Yang , G. Maravelias , K. Boutsia , N. Britavskiy , E. Zapartas

Dust is expected to form on a year timescale in core-collapse supernova (SN) ejecta. Its existence is revealed through an infrared brightening, an optical dimming, or a blue-red emission-line profile asymmetry. To investigate how the dust…

太阳与恒星天体物理 · 物理学 2025-06-25 Luc Dessart , D. John Hillier , Arkaprabha Sarangi

We present models of spherically symmetric recurrent nova shells interacting with circumstellar material in a symbiotic system composed of a red giant expelling a wind, and a white dwarf accreting from this material. Recurrent nova…

太阳与恒星天体物理 · 物理学 2015-06-11 Kevin Moore , Lars Bildsten

We present 65 extremely dust-obscured galaxies from the UltraVISTA DR3 survey of the COSMOS field at $1<z<4$. In contrast to other studies of dusty galaxies, we select our sample based on dust attenuation measured by UV-MIR spectral energy…

星系天体物理 · 物理学 2022-12-07 Nicholas S. Martis , Danilo M. Marchesini , Adam Muzzin , Chris J. Willot , Marcin Sawicki

We use the Wide-field Infrared Survey Explorer (WISE) and the Sloan Digital Sky Survey (SDSS) to confirm a connection between dust-obscured active galactic nuclei (AGNs) and galaxy merging. Using a new, volume-limited (z <= 0.08) catalog of…

In order to determine the composition of the dust in the circumstellar envelopes of oxygen-rich asymptotic giant branch (AGB) stars we have computed a grid of modust radiative-transfer models for a range of dust compositions, mass-loss…

太阳与恒星天体物理 · 物理学 2015-06-18 O. C. Jones , F. Kemper , S. Srinivasan , I. McDonald , G. C. Sloan , A. A. Zijlstra

The mass-loss process from evolved stars is a key ingredient for our understanding of many fields of astrophysics, including stellar evolution and the chemical enrichment of the interstellar medium via stellar yields. One the main unsolved…

Using the CIGALE software, we present the preliminary results of a multiwavelength analysis of eighteen low-redshift isolated galaxies with active nuclei (isolated AGNs). This sample was formed by cross-matching the 2MIG isolated AGNs…

星系天体物理 · 物理学 2025-11-26 O. Kompaniiets

We discovered a hyperluminous dust-obscured galaxy with mysterious blue-excess emission (BlueDOG) in rest-frame UV of its spectral energy distribution (SED) from a multi-wavelength survey in the AKARI Deep Field - South (ADF-S). We present…

星系天体物理 · 物理学 2025-08-28 Seongjae Kim , Woong-Seob Jeong , Minjin Kim , Hyunsung D. Jun , Yujin Yang , Takao Nakagawa

The discovery with the {\it Herschel Space Observatory} of bright far infrared and submm emission from the ejecta of the core collapse supernova SN\,1987A has been interpreted as indicating the presence of some 0.4--0.7\,M$_\odot$ of dust.…

太阳与恒星天体物理 · 物理学 2015-06-23 R. Wesson , M. J. Barlow , M. Matsuura , B. Ercolano

We have detected the 10 um silicate feature and the 11.3 um crystalline forsterite feature in absorption in 21 oxygen-rich AGB stars in the Galactic Bulge. The depths of the 10 um feature indicate highly-obscured circumstellar environments.…

太阳与恒星天体物理 · 物理学 2025-01-27 Steven R. Goldman , Jacco Th. van Loon , Olivia C. Jones , Joris A. D. L. Blommaert , Martin A. T. Groenewegen

The detected variety in chemistry and circumstellar shell morphology of the limited sample of Galactic post-AGB stars is so large that there is no consensus yet on how the different objects are linked by evolutionary channels. The…

太阳与恒星天体物理 · 物理学 2015-05-27 E. van Aarle , H. Van Winckel , T. Lloyd Evans , T. Ueta , P. R. Wood , A. G. Ginsburg

The small grain sizes produced by Type II supernova (SN II) models in young, metal-poor galaxies make the appearance of their infrared (IR) spectral energy distribution (SED) quite different from that of nearby, older galaxies. To study…

天体物理学 · 物理学 2009-11-07 Tsutomu T. Takeuchi , Hiroyuki Hirashita , Takako T. Ishii , Leslie K. Hunt , Andrea Ferrara

Based on the monitoring of the Dusty S-cluster Object (DSO/G2) during its closest approach to the Galactic Center supermassive black hole in 2014 and 2015 with ESO VLT/SINFONI, we further explore the model of a young, accreting star to…

星系天体物理 · 物理学 2016-01-07 Michal Zajacek , Andreas Eckart , Florian Peissker , Grischa D. Karssen , Vladimir Karas

The source OGLE-BLG-DN-0064 (hereafter OGLE64) was classified as a potential dwarf nova based on its regular outburst activity revealed by the OGLE optical survey. In this paper, we investigate the X-ray and optical emissions from the…

高能天体物理现象 · 物理学 2025-04-08 A. B. Sibgatullin , V. I. Dodon , I. I. Galiullin , A. I. Kolbin , V. V. Shimansky , A. S. Vinokurov

We combine new dust continuum observations of the edge-on spiral galaxy NGC 4565 in all Herschel/SPIRE (250, 350, 500 micron) wavebands, obtained as part of the Herschel Reference Survey, and a large set of ancillary data (Spitzer, SDSS,…

This study explored the GALEX ultraviolet (UV) properties of optical red sequence galaxies in 4 rich Abell clusters at z \leq 0.1. In particular, we tried to find a hint of merger-induced recent star formation (RSF) in red sequence…

星系天体物理 · 物理学 2016-08-17 Yun-Kyeong Sheen , Sukyoung K. Yi , Chang H. Ree , Yara Jaffé , Ricardo Demarco , Ezequiel Treister