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Aims. The aim is to explore the interstellar medium around the dust bubble N131 and search for signatures of star formation. Methods. We perform a multiwavelength study around the N131 with data taken from large-scale surveys of infrared…

星系天体物理 · 物理学 2013-01-15 Chuan-Peng Zhang , Jun-Jie Wang , Jin-Long Xu

A comprehensive 3-D model of the central 300 pc of the Milky Way, the Central Molecular Zone (CMZ) is of fundamental importance in understanding energy cycles in galactic nuclei, since the 3-D structure influences the location and intensity…

Resolving individual gravitational waves from tens of millions of double white dwarf (DWD) binaries in the Milky Way is a challenge for future space-based gravitational wave detection programs. By using previous data to define the priors…

高能天体物理现象 · 物理学 2023-09-13 Pin Gao , Xi-Long Fan , Zhou-Jian Cao , Xue-Hao Zhang

We report the initial results from a Spitzer GO-1 program to obtain low resolution, mid-infrared spectra of infrared luminous galaxies at z~1-2. This paper presents the spectra of eight sources observed with the Spitzer InfraRed…

天体物理学 · 物理学 2008-11-26 Lin Yan , R. Chary , L. Armus , H. Teplitz , G. Helou , D. Frayer , D. Fadda , J. Surace , P. Choi

We study relatively isolated massive WN-type stars in the Galactic center. The K-band spectra of WR102ka and WR102c are exploited to infer the stellar parameters and to compute synthetic stellar spectra using the Potsdam Wolf-Rayet (PoWR)…

天体物理学 · 物理学 2009-11-13 A. Barniske , L. M. Oskinova , W. -R. Hamann

New surveys with the Spitzer space telescope identify distant star-forming and active galaxies by their strong emission at far-infrared wavelengths, which provides strong constraints on these galaxies' bolometric energy. Using early results…

Kuiper belt objects smaller than a few kilometers are difficult to observe directly. They can be detected when they randomly occult a background star. Close to the ecliptic plane, each star is occulted once every tens of thousands of hours,…

天体物理仪器与方法 · 物理学 2023-10-06 Guy Nir , Eran O. Ofek , Barak Zackay

Cloud detection is an important preprocessing step for the precise application of optical satellite imagery. In this paper, we propose a deep learning based cloud detection method named multi-scale convolutional feature fusion (MSCFF) for…

计算机视觉与模式识别 · 计算机科学 2019-03-06 Zhiwei Li , Huanfeng Shen , Qing Cheng , Yuhao Liu , Shucheng You , Zongyi He

Using the MIPS instrument on the Spitzer telescope, we have searched for infrared excesses around a sample of 82 stars, mostly F, G, and K main-sequence field stars, along with a small number of nearby M stars. These stars were selected for…

天体物理学 · 物理学 2008-11-26 C. Beichman , G. Bryden , K. Stapelfeldt

Data-driven models of stellar spectra are useful tools to study non-stellar information, such as the Diffuse Interstellar Bands (DIBs) caused by intervening interstellar material. Using $\sim 55000$ spectra of $\sim 17000$ red clump stars…

星系天体物理 · 物理学 2024-02-08 Kevin A. McKinnon , Melissa K. Ness , Constance M. Rockosi , Puragra Guhathakurta

Using the new capabilities of the Spitzer Space Telescope and extensive multiwavelength data from the Spitzer Infrared Nearby Galaxies Survey (SINGS), it is now possible to study the infrared properties of star formation in nearby galaxies…

[abridged] We present 52-93 micron spectra obtained with Spitzer in the MIPS-SED mode, of a representative sample of luminous compact far-IR sources in the LMC. These include carbon stars, OH/IR AGB stars, post-AGB objects and PNe,…

The interstellar medium of galaxies is filled with holes, bubbles, and shells, typically interpreted as remnants of stellar evolution. There is growing interest in the study of their properties to investigate stellar and supernova feedback.…

We developed a computer vision-based methodology to achieve precise 3D segmentation and tracking of superbubbles within magnetohydrodynamic simulations of the supernova-driven interstellar medium. Leveraging advanced 3D transformer models,…

星系天体物理 · 物理学 2026-03-31 Jing-Wen Chen , Alex S. Hill , Anna Ordog , Rebecca A. Booth , Mohamed S. Shehata

Circumstellar debris disks are important because of their connection to planetary systems. An efficient way to identify these systems is through their infrared excess. Most studies so far concentrated on early-type or solar-type stars, but…

太阳与恒星天体物理 · 物理学 2015-06-11 Henning Avenhaus , Hans Martin Schmid , Michael R. Meyer

The Milky Way hosts on average a few supernova explosions per century, yet in the past millennium only five supernovae have been identified confidently in the historical record. This deficit of naked-eye supernovae is at least partly due to…

太阳与恒星天体物理 · 物理学 2021-09-08 C. Tanner Murphey , Jacob W. Hogan , Brian D. Fields , Gautham Narayan

We present the reduction of the 24 micron data obtained during the first cosmological survey performed by the Spitzer Space Telescope (First Look Survey, FLS). The survey consists of a shallow observation of 2.5x2 sq deg centered at 17h18m…

How does the submm galaxy population detected by SCUBA fit into galaxy evolution? How do these rare starbursting systems, which contribute significantly to high redshift star-formation, relate to other galaxy populations? Deep radio…

The evolutionary classification of molecular clumps, crucial for understanding star formation, is commonly based on human-assigned categories derived from infrared (IR) emission and well-established morphological criteria. However, due to…