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We present infrared observations of the ultra-compact H II region W3(OH) made by the FORCAST instrument aboard SOFIA and by Spitzer/IRAC. We contribute new wavelength data to the spectral energy distribution, which constrains the optical…

We investigated the high-mass star formation activity in a subregion of the Sagittarius E star-forming complex, centered at (l,b) = (358.69 deg, 0.03 deg), where infrared and radio sources trace a prominent U-shaped structure that has not…

星系天体物理 · 物理学 2026-04-24 A. Cheema , V. S. Veena , K. M. Menten , T. S. Pillai , S. A. Dzib , A. Brunthaler , S. Khan , R. Dokara , M. R. Rugel , Y. Gong

We present adaptive optics assisted integral field spectroscopy of nine Halpha-selected galaxies at z=0.84--2.23 selected from the HiZELS narrow-band survey. Our observations map the star-formation and kinematics of these representative…

宇宙学与河外天体物理 · 物理学 2012-11-12 Mark Swinbank , Ian Smail , David Sobral , Tom Theuns , Philip Best , Jim Geach

We study the probability distribution function (PDF) of mass surface densities, $\Sigma$, of infrared dark cloud (IRDC) G028.37+00.07 and its surrounding giant molecular cloud. This PDF constrains the physical processes, such as turbulence,…

星系天体物理 · 物理学 2016-09-23 Wanggi Lim , Jonathan C. Tan , Jouni Kainulainen , Bo Ma , Michael J. Butler

A proto-cluster core is the most massive dark matter halo (DMH) in a given proto-cluster. To reveal the galaxy formation in core regions, we search for proto-cluster cores at $z\sim 2$ in $\sim 1.5\, \mathrm{deg}^{2}$ of the COSMOS field.…

星系天体物理 · 物理学 2020-06-24 Makoto Ando , Kazuhiro Shimasaku , Rieko Momose

We provide a library of some 7000 SEDs for starbursts and ultra luminous galaxies (http://www.eso.org/~rsiebenm/sb_models). Its purpose is to quickly obtain estimates of the basic parameters, such as luminosity, size and dust or gas mass…

天体物理学 · 物理学 2007-05-23 Ralf Siebenmorgen , Endrik Kruegel

This work explored the spatial distribution of C$^{17}$O, SiO, HC$_{3}$N and SO$_{2}$ molecules, as well as the energetics of outflows in G358.46$-$0.39 proto-cluster using ALMA band 7 archival data, with the aim of providing an improved…

星系天体物理 · 物理学 2025-11-20 Chukwuebuka J. Ugwua , James O. Chibuezea , Willice Obonyoa , Mavis Seidu

Stellar clusters are regularly used to study the evolution of their host galaxy. Except for a few nearby galaxies, these studies rely on the interpretation of integrated cluster properties, especially integrated photometry observed using…

星系天体物理 · 物理学 2013-12-17 P. Anders , R. Kotulla , R. de Grijs , J. Wicker

We present 1.05 mm ALMA observations of the deeply embedded high-mass protocluster G11.92-0.61, designed to search for low-mass cores within the accretion reservoir of the massive protostars. Our ALMA mosaic, which covers an extent of ~0.7…

星系天体物理 · 物理学 2017-05-10 C. J. Cyganowski , C. L. Brogan , T. R. Hunter , R. Smith , J. M. D. Kruijssen , I. A. Bonnell , Q. Zhang

We constrain the assembly history of galaxies in the projected central 0.5 Mpc of the Coma cluster by performing structural decomposition on 69 massive (M_star >= 10^9 M_sun) galaxies using high-resolution F814W images from the HST Treasury…

Our search for the earliest stages of massive star formation turned up twelve massive pre-protocluster candidates plus a few protoclusters. For this search, we selected 47 FIR-bright IRAS sources in the outer Galaxy. We mapped regions of…

天体物理学 · 物理学 2009-11-11 R. Klein , B. Posselt , K. Schreyer , J. Forbrich , Th. Henning

We have identified 189 candidate $z > 1.3$ protoclusters and clusters in the LSST Deep Drilling Fields. This sample will enable the measurement of the metal enrichment and star formation history of clusters during their early assembly…

The Spitzer-GLIMPSE point source catalog and images have been used to study a sample of 381 massive protostellar candidates. IRAC-Point source photometry was used to analyse colours, magnitudes and spectral indicies of the infrared…

天体物理学 · 物理学 2008-02-15 M. S. N. Kumar , J. M. C. Grave

We have observed the Class I protostellar source Elias 29 with Atacama Large Millimeter/submillimeter Array (ALMA). We have detected CS, SO, $^{34}$SO, SO$_2$, and SiO line emissions in a compact component concentrated near the protostar…

We present a population study of Atacama Large Millimeter/submillimeter Array (ALMA) Cycle 6 observations of the 100 most gravitationally unstable dense cores in Aquila using a simple mass versus size analysis. We identify 66 continuum…

星系天体物理 · 物理学 2026-05-05 Samuel Fielder , Helen Kirk , Michael Dunham , Stella Offner

(Abridged) We present a series of decaying turbulence simulations that represent a cluster-forming clump within a molecular cloud, investigating the role of magnetic fields on the formation of potential star-forming cores. We present an…

天体物理学 · 物理学 2007-11-07 David A. Tilley , Ralph E. Pudritz

Derivation of physical properties of galaxies using spectral energy distribution (SED) fitting is a powerful method, but can suffer from various systematics arising from model assumptions. Previously, such biases were mostly studied in the…

星系天体物理 · 物理学 2022-04-27 Katherine Zine , Samir Salim

The South Pole Telescope has discovered one hundred gravitationally lensed, high-redshift, dusty, star-forming galaxies (DSFGs). We present 0.5" resolution 870um Atacama Large Millimeter/submillimeter Array imaging of a sample of 47 DSFGs…

We present multi-wavelength data on the globally infalling molecular cloud/protostellar cluster BYF 73. These include new far-IR spectral line and continuum data from SOFIA's Far Infrared Field-Imaging Line Spectrometer (FIFI-LS),…

星系天体物理 · 物理学 2018-10-30 Rebecca L. Pitts , Peter J. Barnes , Stuart D. Ryder , Dan Li

We explore the morphological features and star formation activities of [OII] emitters in the COSMOS UltraDeep field at $z \sim 1.5$ using JWST NIRCam data from the COSMOS-Web survey and Subaru Hyper Suprime-Cam. We also report the discovery…

星系天体物理 · 物理学 2024-03-13 Ronaldo Laishram , Tadayuki Kodama , Takahiro Morishita , Andreas Faisst , Yusei Koyama , Naoaki Yamamoto