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相关论文: Star Formation Activity in the Galactic HII Comple…

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To investigate the process of star formation triggered by the expansion of an HII region, we present a multi-wavelength analysis of the Galactic HII region RCW 120 and its surroundings. The collect and collapse model predicts that the layer…

We present the results from Chandra X-ray observations, and near- and mid-infrared analysis, using VISTA/VVV and Spitzer/GLIMPSE catalogs, of the high-mass star-forming region IRAS 16562-3959, which contains a candidate for a high mass…

星系天体物理 · 物理学 2018-06-19 Virginie A. Montes , Peter Hofner , Lidia M. Oskinova , Hendrik Linz

The formation of massive stars and their arrival on the zero-age main-sequence occurs hidden behind dense clouds of gas and dust. In the giant Hii region NGC 3603, the radiation of a young cluster of OB stars has dispersed dust and gas in…

太阳与恒星天体物理 · 物理学 2015-10-14 C. A. Hummel , T. Stanke , R. Galvan-Madrid , B. S. Koribalski

The main objective of this paper is to study the possibility of triggered star formation on the border of the HII region S233, which is formed by a B-star. Using high-resolution spectra we determine the spectral class of the ionizing star…

太阳与恒星天体物理 · 物理学 2016-05-31 D. A. Ladeyschikov , A. M. Sobolev , S. Yu. Parfenov , S. A. Alexeeva , J. H. Bieging

We present data from mid-infrared Keck Telescope imaging of 18 radio-selected ultra-compact HII region candidates at diffraction-limited resolution. The goal of these observations is to determine the sizes, luminosities, and morphologies of…

天体物理学 · 物理学 2008-11-26 Uriel Giveon , Matthew J. Richter , Robert H. Becker , Richard L. White

The L1551 molecular cloud contains two small clusters of Class 0 and I protostars, as well as a halo of more evolved Class II and III YSOs, indicating a current and at least one past burst of star formation. We present here new, sensitive…

天体物理学 · 物理学 2009-11-13 Gerald H. Moriarty-Schieven , Doug Johnstone , John Bally , Tim Jenness

NGC 6357 is an active star-forming region located in the Sagittarius arm displaying several star clusters, which makes it a very interesting target to investigate star formation and early cluster evolution. We explore NGC 6357 with the…

太阳与恒星天体物理 · 物理学 2015-06-19 E. F. Lima , E. Bica , C. Bonatto , R. K. Saito

Star forming dwarf galaxies in the local volume are diverse and are ideal test beds to understand details of star formation in a variety of environments. Here, we present a deep FUV imaging study of a nearby dwarf irregular galaxy IC 2574…

星系天体物理 · 物理学 2020-01-08 Chayan Mondal , Annapurni Subramaniam , Koshy George

As nearby neighbors to the Milky Way, the Large and Small Magellanic Clouds (LMC and SMC) provide a unique opportunity to study star formation in the context of their galactic ecosystems. Thousands of young stellar objects (YSOs) have been…

星系天体物理 · 物理学 2019-01-16 Megan Reiter , Omnarayani Nayak , Margaret Meixner , Olivia Jones

We present a near-infrared spectroscopic and imaging analysis of the star-forming region IRAS 16475-4609, based on TripleSpec/SOAR spectroscopy and NEWFIRM/CTIO imaging, complemented by archival radio and sub-millimeter data. Our…

星系天体物理 · 物理学 2025-06-11 Felipe Navarete , Sean D. Points , Augusto Damineli

It is often assumed that the strong gravitational field of a super-massive black hole disrupts an adjacent molecular cloud preventing classical star formation in the deep potential well of the black hole. Yet, young stars have been observed…

星系天体物理 · 物理学 2016-08-10 B. Jalali , F. I. Pelupessy , A. Eckart , S. Portegies Zwart , N. Sabha , A. Borkar , J. Moultaka , K. Mužić , L. Moser

We present radio and infrared observations indicating on-going star formation activity inside the $\sim2-5$ pc circumnuclear ring at the Galactic center. Collectively these measurements suggest a continued disk-based mode of on-going star…

We study the stellar population of galaxies with active star formation, determining ages of the stellar components by means of spectral population synthesis of their absorption spectra. The data consist of optical spectra of 185 nearby ($z…

天体物理学 · 物理学 2009-10-31 D. Raimann , E. Bica , T. Storchi-Bergmann , J. Melnick , H. Schmitt

HST ACS/HRC images in UV (F250W), V (F555W), and I (F814W) resolve three isolated OB associations that lie up to 30 kpc from the stellar disk of the S0 galaxy NGC 1533. Previous narrow-band Halpha imaging and optical spectroscopy showed…

天体物理学 · 物理学 2009-11-13 J. K. Werk , M. E. Putman , G. R. Meurer , M. S. Oey , E. V. Ryan-Weber , R. C. Kennicutt , K. C. Freeman

We present a multiwavelength study of the H II region Sh 2-301 (S301) using deep optical data, near-infrared data, radio continuum data and other archival data at longer wavelengths. A cluster of young stellar objects (YSOs) is identified…

We present a Herschel far-infrared study towards the rich massive star- forming complex G305, utilising PACS 70, 160 {\mu}m and SPIRE 250, 350, and 500 {\mu}m observations from the Hi-GAL survey of the Galactic plane. The focus of this…

The intermediate- to high-mass star-forming region IRAS 20343+4129 is an excellent laboratory to study the influence of high- and intermediate-mass young stellar objects on nearby starless dense cores, and investigate for possible…

星系天体物理 · 物理学 2015-06-04 F. Fontani , Aina Palau , G. Busquet , A. Isella , R. Estalella , A. Sanchez-Monge , P. Caselli , Q. Zhang

We present sensitive NIR (J, H and K) imaging observations toward four luminous massive star forming regions in the Norma Spiral Arm: G324.201+0.119, G328.307+0.432, G329.337+0.147 and G330.949-0.174. We identify three clusters of young…

太阳与恒星天体物理 · 物理学 2014-11-20 L. Chavarria , D. Mardones , G. Garay , A. Escala , L. Bronfman , S. Lizano

Aiming at studying the physical properties of Galactic IR bubbles and to explore their impact in triggering massive star formation, we perform a multiwavelength analysis of the bubble HII region Sh2-39 (N5) and its environs. To analyze the…

星系天体物理 · 物理学 2017-09-27 N. U. Duronea , C. E. Cappa , L. Bronfman , J. Borissova , M. Gromadzki

With an unprecedented astrometric and photometric data precision, Gaia EDR3 gives us, for the first time, the opportunity to systematically detect and map in the optical bands, the low mass populations of the star forming regions (SFRs) in…

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