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相关论文: Extreme giant molecular clouds in the luminous inf…

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We present the highest resolution CO (2-1) observations obtained to date (0.25") of NGC 3256 and use them to determine the detailed properties of the molecular interstellar medium in the central 6 kpc of this merger. Distributions of…

星系天体物理 · 物理学 2020-11-17 Nathan Brunetti , Christine D. Wilson , Kazimierz Sliwa , Eva Schinnerer , Susanne Aalto , Alison B. Peck

We present observations of the central 9 kpc of the Antennae merger (NGC 4038/9) at 55 pc resolution in the CO 2-1 line obtained with the Atacama Large Millimeter/submillimeter Array (ALMA). We use a pixel-based analysis to compare the gas…

In external galaxies, molecular composition may be influenced by extreme environments such as starbursts and galaxy mergers. To study such molecular chemistry, we observed the luminous-infrared galaxy and merger NGC 3256 using the Atacama…

星系天体物理 · 物理学 2018-03-21 Nanase Harada , Kazushi Sakamoto , Sergio Martin , Susanne Aalto , Rebeca Aladro , Kazimierz Sliwa

We present the highest resolution (1") $^{12}$CO(1-0) observations of molecular gas in the dwarf starburst galaxy NGC 625, to date, obtained with ALMA. Molecular gas is distributed in discrete clouds within an area of $0.4$ kpc$^2$ and does…

星系天体物理 · 物理学 2020-05-27 Nia Imara , Ilse De Looze , Christopher M. Faesi , Diane Cormier

We report ALMA and SMA observations of the luminous infrared merger NGC 3256, the most luminous galaxy within z=0.01. Both of the two merger nuclei separated by 5" (0.8 kpc) on the sky have a compact concentration of molecular gas, i.e.,…

星系天体物理 · 物理学 2014-12-08 Kazushi Sakamoto , Susanne Aalto , Francoise Combes , Aaron Evans , Alison Peck

We present a detailed analysis of high-resolution Chandra observations of the merger system NGC3256, the most IR luminous galaxy in the nearby universe. The X-ray data show that several discrete sources embedded in complex diffuse emission…

天体物理学 · 物理学 2009-11-07 P. Lira , M. Ward , A. Zezas , A. Alonso-Herrero , S. Ueno

Molecular gas in the merging starburst galaxy NGC 3256 has been imaged with the Submillimeter Array at a resolution of 1'' x 2'' (170 x 340 pc at 35 Mpc). This is the first interferometric imaging of molecular gas in the most luminous…

天体物理学 · 物理学 2009-11-11 Kazushi Sakamoto , Paul T. P. Ho , Alison B. Peck

We investigated the central mass distribution of the luminous infrared galaxy NGC 3256 at a distance of 35 Mpc by using CO(1-0) observations of the Atacama Large Millimeter and sub-millimeter Array (ALMA) and near-IR data of the Two Micron…

The outer Galaxy presents an optimal setting for investigating molecular clouds and star formation in environments with low metallicity. A total of 72 Galactic edge clouds were surveyed using the CO\,(2--1) line with the IRAM\,30\,m…

We present XMM-Newton EPIC observations of the two nearby starburst merger galaxies NGC 3256 & NGC 3310. The broad-band (0.3-10 keV) integrated X-ray emission from both galaxies shows evidence of multi-phase thermal plasmas plus an…

天体物理学 · 物理学 2009-11-10 L. P. Jenkins , T. P. Roberts , M. J. Ward , A. Zezas

We present new ALMA CO(2--1) observations of two well studied group-centered elliptical galaxies: NGC~4636 and NGC~5846. In addition, we include a revised analysis of Cycle 0 ALMA observations of the central galaxy in the NGC~5044 group…

We present improved methods for segmenting CO emission from galaxies into individual molecular clouds, providing an update to the CPROPS algorithms presented by Rosolowsky & Leroy (2006; arXiv:astro-ph/0601706 ). The new code enables both…

We measure the velocity dispersion, $\sigma$, and surface density, $\Sigma$, of the molecular gas in nearby galaxies from CO spectral line cubes with spatial resolution $45$-$120$ pc, matched to the size of individual giant molecular…

We present Australia Telescope Compact Array (ATCA) observations of a galaxy-sized intergalactic HI cloud (the Vela Cloud) in the NGC 3256 galaxy group. The group contains the prominent merging galaxy NGC 3256, which is surrounded by a…

宇宙学与河外天体物理 · 物理学 2015-05-13 Jayanne English , Baerbel Koribalski , Joss Bland-Hawthorn , Ken Freeman , Claudia McCain

We present observations of CO(3-2) and $^{13}$CO(3-2) emission near the supernebula in the dwarf galaxy NGC 5253, which contains one of the best examples of a potential globular cluster in formation. The 0.3" resolution images reveal an…

星系天体物理 · 物理学 2020-05-15 J. L. Turner , S. M. Consiglio , S. C. Beck , W. M. Goss , P. T. P. Ho , D. S. Meier , S. Silich , J. -H. Zhao

Cloud-scale surveys of molecular gas reveal the link between molecular clouds properties and star formation (SF) across a range of galactic environments. Cloud populations in galaxy disks are considered to be representative of the `normal'…

We present the first high angular resolution study of giant molecular clouds (GMCs) in the nearby spiral galaxy NGC 300, based on observations from the Submillimeter Array (SMA). We target eleven 500 pc-sized regions of active star…

星系天体物理 · 物理学 2016-04-28 Christopher Faesi , Charles Lada , Jan Forbrich

We find in a detailed morphological study (at 15 pc resolution) that the extended massive star formation process, shows: (i) extended triple asymmetrical spiral arms structure (r = 5 kpc); and (ii) the spiral arms emanate from three…

天体物理学 · 物理学 2009-10-31 S. Lipari , R. Diaz , Y. Taniguchi , R. Terlevich , H. Dottori , G. Carranza

We present high-spatial-resolution ($\sim 0\farcs2$, or $\sim$3\,pc) CO(2--1) observations of the nearest young starburst dwarf galaxy, NGC\,5253, taken with the Atacama Large Millimeter/submillimeter Array. We have identified 118 molecular…

星系天体物理 · 物理学 2018-10-10 Rie E. Miura , Daniel Espada , Akihiko Hirota , Kouichiro Nakanishi , George J. Bendo , Hajime Sugai

We report ~2" resolution Atacama Large Millimeter/submillimeter Array observations of the HCN(1-0), HCO+(1-0), CO(1-0), CO(2-1), and CO(3-2) lines towards the nearby merging double-nucleus galaxy NGC 3256. We find that the high density gas…

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