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相关论文: A multi-wavelength study of star formation activit…

200 篇论文

We report on a multi-wavelength (IR to cm) and multi-resolution (1 mas to 20 arcsec) exploration of high-mass star formation regions in the Galactic plane, at longitudes observable from the Southern Hemisphere. Our source sample was…

天体物理学 · 物理学 2007-05-23 V. Minier , M. G. Burton , T. Hill , C. R. Purcell , S. Longmore , A. J. Walsh , F. Herpin

We present new high-sensitivity high-resolution mm-wave observations of the Onsala 1 ultra-compact HII region that bring to light the internal structure of this massive star forming cloud. The 1.2 mm continuum map obtained with the IRAM…

天体物理学 · 物理学 2009-11-10 M. S. N. Kumar , M. Tafalla , R. Bachiller

Infrared Dark Clouds are ideal laboratories to study the initial processes of high-mass star and star cluster formation. We investigated star formation activity of an unexplored filamentary dark cloud (~5.7pc x 1.9pc), which itself is part…

We report the observational findings of the Sh2-112 H{\sc ii} region by using the multiwavelength data analysis ranging from optical to radio wavelengths. This region is powered by a massive O8V-type star BD +45 3216. The surface density…

太阳与恒星天体物理 · 物理学 2020-12-23 Neelam Panwar , Saurabh Sharma , D. K. Ojha , Tapas Baug , L. K. Dewangan , B. C. Bhatt , Rakesh Pandey

We have observed the W75 N massive star forming region in SiO(J=2-1 & J=1-0) at 3" - 5" resolution and in 6 cm, 2 cm, and 7 mm continuum emission at 1.4" - 0.2" resolution. The abundance ratio of [SiO]/[H2] is roughly 5-7 x 10^-11 which is…

天体物理学 · 物理学 2009-11-10 D. S. Shepherd , S. E. Kurtz , L. Testi

We observed the Sh 2-233IR (S233IR) region with better sensitivity in near-infrared than previous studies for this region. By applying statistical subtraction of the back- ground stars, we identified member sources and derived the age and…

太阳与恒星天体物理 · 物理学 2011-07-18 Chi-Hung Yan , Y. C. Minh , Shiang-Yu Wang , Yu-Nang Su , Adam Ginsburg

We are conducting a survey of several regions of high-mass star formation to assess their content and structure. The observations include Spitzer observations, ground-based optical and near-IR imaging surveys, and optical and IR spectra of…

天体物理学 · 物理学 2011-03-10 L. E. Allen , J. L. Hora , S. T. Megeath , L. K. Deutsch , G. G. Fazio , L. Chavarria , R. W. Dell

An investigation in radio and infrared wavelengths of two high-mass star forming regions toward the southern Galactic bubble S10 is presented here. The two regions under study are associated with the broken bubble S10 and Extended Green…

星系天体物理 · 物理学 2016-11-09 Swagat Ranjan Das , Anandmayee Tej , Sarita Vig , Swarna K. Ghosh , Ishwara Chandra C. H.

We present near-infrared integral-field spectroscopic observations targeting H$\alpha$ in eight sub-millimeter galaxies (SMGs) at $z$=1.3-2.5 using VLT/SINFONI, obtaining significant detections for six of them. The star formation rates…

To characterize a bright-rimmed cloud embedded in the HII region Sh2-48 searching for evidence of triggered star formation. We carried out observations towards a region of 2'x2' centered at RA=18h 22m 11.39s, dec.=-14deg 35m 24.81s (J2000)…

星系天体物理 · 物理学 2015-06-16 M. E. Ortega , S. Paron , E. Giacani , M. Rubio , G. Dubner

Massive star-forming regions exhibit a rich chemistry with complex gas distributions, especially on small scales. While surveys have yielded constraints on typical gas conditions, they often have coarse spatial resolution and limited…

NGC 253 hosts the nearest nuclear starburst. Previous observations show a region rich in molecular gas, with dense clouds associated with recent star formation. We used ALMA to image the 350 GHz dust continuum and molecular line emission…

The star-forming region N66, as a host of the majority of OB stars in the Small Magellanic Cloud, provides a unique opportunity to enhance our understanding of the triggers of high-mass star formation. We investigate the properties of the…

We have carried out a multi-wavelength study of the infrared dust bubble N6 to extensively investigate the molecular environs and star-forming activities therein. Mapping observations in 12CO J=1-0 and 13CO J=1-0 performed with the Purple…

太阳与恒星天体物理 · 物理学 2015-06-23 Jing-Hua Yuan , Yuefang Wu , Jin Zeng Li , Hongli Liu

We investigate at a high angular resolution the spatial and kinematic structure of the S255IR high mass star-forming region, which demonstrated recently the first disk-mediated accretion burst in the massive young stellar object. The…

星系天体物理 · 物理学 2020-02-05 Igor I. Zinchenko , Sheng-Yuan Liu , Yu-Nung Su , Kuo-Song Wang , Yuan Wang

Using new continuum and molecular line data from the ALMA Three-millimeter Observations of Massive Star-forming Regions (ATOMS) survey and archival VLA, 4.86 GHz data, we present direct observational evidence of hierarchical triggering…

We present sub-arcsecond observations toward the massive star forming region G75.78+0.34. We used the Very Large Array to study the centimeter continuum and H2O and CH3OH maser emission, and the Owens Valley Radio Observatory and…

We present 2" to 7" resolution 3 mm continuum and CO(J=1-0) line emission and near infrared Ks, H2, and [FeII] images toward the massive star forming region W75 N. The CO emission uncovers a complex morphology of multiple, overlapping…

天体物理学 · 物理学 2009-11-07 D. S. Shepherd , L. Testi , D. P. Stark

S255N is a luminous far-infrared source that contains many indications of active star formation but lacks a prominent near-infrared stellar cluster. We present mid-infrared through radio observations aimed at exploring the evolutionary…

天体物理学 · 物理学 2009-06-23 C. J. Cyganowski , C. L. Brogan , T. R. Hunter

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…