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相关论文: From gas to stars: MUSEings on the internal evolut…

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Integral field unit (IFU) spectroscopic observations of resolved galaxies provide an optimal experimental setting for determination of stellar population properties, in particular - age, metallicity and $\alpha$-enhancement, which are key…

Molecular outflows from high-mass young stellar objects provide an excellent way to study the star formation process, and investigate if they are scaled-up versions of their low-mass counterparts. We selected the nearby massive star forming…

太阳与恒星天体物理 · 物理学 2015-05-14 S. Leurini , C. Codella , L. A. Zapata , A. Belloche , T. Stanke , F. Wyrowski , P. Schilke , K. M. Menten , R. Guesten

We present illustrative models for the UV to millimeter emission of starburst galaxies which are treated as an ensemble of optically thick giant molecular clouds (GMCs) centrally illuminated by recently formed stars. The models follow the…

天体物理学 · 物理学 2009-10-31 A. Efstathiou , M. Rowan-Robinson , R. Siebenmorgen

A member of the Local Group, IC 1613 is a gas rich irregular dwarf galaxy that appears to have formed stars continuously over the last 10 Gyr and is relatively independent of external influences from other galaxies. This paper aims to study…

星系天体物理 · 物理学 2014-12-24 L. F. Sibbons , S. G. Ryan , M. Irwin , R. Napiwotzki

We took spatially resolved slit FORS2 spectra of 19 cluster galaxies at z=1.4, and 8 additional field galaxies at 1<z<1.2 using the ESO Very Large Telescope. The targets were selected from previous spectroscopic and photometric campaigns.…

星系天体物理 · 物理学 2017-09-27 J. M. Pérez-Martínez , B. Ziegler , M. Verdugo , A. Böhm , M. Tanaka

Over the past decade increasingly robust estimates of the dense molecular gas content in galaxy populations between redshift 0 and the peak of cosmic galaxy/star formation from redshift 1-3 have become available. This rapid progress has…

星系天体物理 · 物理学 2020-11-11 Linda J. Tacconi , Reinhard Genzel , Amiel Sternberg

(Abridged) We present the results of a new search for variable stars in the Local Group (LG) isolated dwarf galaxy IC1613, based on 24 orbits of F475W and F814W photometry from the ACS camera onboard the HST. We detected 259 candidate…

Dwarf galaxies have been extensively studied in the Local Group, in nearby groups, and selected clusters, giving us a robust picture of their global stellar and dynamical properties in particular locations in the Universe. Intense study of…

Using 10 sightlines observed with the Hubble Space Telescope/Cosmic Origins Spectrograph, we study the circumgalactic medium (CGM) and outflows of IC1613, which is a low-mass ($M_*\sim10^8~M_\odot$), dwarf irregular galaxy on the outskirts…

星系天体物理 · 物理学 2021-01-06 Yong Zheng , Andrew Emerick , Mary E. Putman , Jessica K. Werk , Evan N. Kirby , Joshua E. G. Peek

Context: Determining the parameters of massive stars is crucial to understand many processes in galaxies and the Universe, since these objects are important sources of ionization, chemical enrichment and momentum. 10m class telescopes…

太阳与恒星天体物理 · 物理学 2015-05-13 M. Garcia , A. Herrero , B. Vicente , N. Castro , L. J. Corral , A. Rosenberg , M. Monelli , .

Ionized gas and stellar kinematical parameters have been measured along the major axis of 20 nearby disc galaxies. We discuss the properties of each sample galaxy distinguishing between those characterized by regular or peculiar kinematics.…

We present a systematic study of the multi-phase interstellar gas in the Inner Galaxy using HST/STIS absorption spectroscopy of 16 massive stars located at spectroscopic distances between 1.3 and 10 kpc in the region $-30^\circ\lesssim l…

Studying the evolution of dwarf galaxies can provide insights into the characteristics of systems that can act as building blocks of massive galaxies. This paper discusses the history of star formation and gas flows (inflow and outflow) of…

星系天体物理 · 物理学 2020-01-08 Nao Fukagawa

We present projected rotational velocity values for 97 Galactic, 55 SMC, and 106 LMC O-B type stars from archival FUSE observations. The evolved and unevolved samples from each environment are compared through the Kolmogorov-Smirnov test to…

太阳与恒星天体物理 · 物理学 2009-07-22 Laura R. Penny , Douglas R. Gies

We present a comparison of the observed, spatially integrated stellar and ionized gas velocity dispersions of $\sim1000$ massive ($\log M_{\star}/M_{\odot}\gtrsim\,10.3$) galaxies in the Large Early Galaxy Astrophysics Census (LEGA-C)…

We present DEIMOS multi-object spectroscopy (MOS) of 22 star-forming dwarf galaxies located in four gas-rich groups, including six newly-discovered dwarfs. Two of the galaxies are strong tidal dwarf galaxy (TDG) candidates based on our…

We present a kinematic study of young stars in Messier 16 (M16) using the Gaia Data Release 3 and high-resolution spectra. A total of 345 stars are selected as genuine members using the published lists of X-ray, infrared sources, and…

太阳与恒星天体物理 · 物理学 2025-08-13 Beomdu Lim , Hyeong-Sik Yun , Hyun-Jeong Kim , Yuna Lee , Jae-Rim Koo , Jongsuk Hong , Heeyoung Oh

Mass loss in massive stars is crucial to understanding how these stars evolve and explode. Despite increasing evidence indicating its importance, episodic mass loss remains poorly understood. Here we report the results of an optical…

We have used UVES on VLT-UT2 to take spectra of 15 individual red giant stars in the centers of four nearby dwarf spheroidal galaxies: Sculptor, Fornax, Carina and Leo I. We measure the abundance variations of numerous elements in these low…

天体物理学 · 物理学 2011-08-23 Eline Tolstoy , K. A. Venn , M. Shetrone , F. Primas , V. Hill , A. Kaufer , T. Szeifert

We present the results of ionized gas turbulent motions study in several nearby dwarf galaxies using a scanning Fabry-Perot interferometer with the 6-m telescope of the SAO RAS. Combining the `intensity-velocity dispersion' diagrams…

宇宙学与河外天体物理 · 物理学 2015-06-04 Alexei Moiseev , Tatiana Lozinskaya