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相关论文: Ammonia observations towards the Aquila Rift cloud…

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We present a map of the major part of the central molecular zone (CMZ) of simultaneous observations in the NH3 (J,K) = (1,1) and (2,2) lines using the Kagoshima 6-m telescope. The mapped area is -1.000 < l < 1.625 deg, -0.375 < b < +0.250…

The inner 300-500 pc of the Milky Way has some of the most extreme gas conditions in our Galaxy. Physical properties of the Central Molecular Zone (CMZ), including temperature, density, thermal pressure, and turbulent pressure, are key…

星系天体物理 · 物理学 2023-03-21 Tierra M. Candelaria , E. A. C Mills , David S. Meier , Juergen Ott , Natalie Butterfield

We report serendipitous detections of line emission with the Atacama Large Millimeter/submillimeter Array (ALMA) in band 3, 6, and 7 in the central parsec down to within 1" around Sgr A* at an up to now highest resolution (<0.5") view of…

To constrain theoretical models of high-mass star formation, observational signatures of mass accretion in O-type forming stars are desirable. Using the JVLA, we have mapped the hot and dense molecular gas in the hot core NGC7538 IRS1, with…

太阳与恒星天体物理 · 物理学 2015-01-14 Ciriaco Goddi , Qizhou Zhang , Luca Moscadelli

Soft X-ray intensity at 0.89 keV along the North Polar Spur is shown to follow the extinction law due to the interstellar gas in the Aquila Rift by analyzing the ROSAT archival data, which proves that the NPS is located behind the rift. The…

星系天体物理 · 物理学 2015-06-23 Yoshiaki Sofue

The ammonia (J,K) = (1,1), (2,2), (3,3), and (4,4) transitions at 23.7 -- 24.1 GHz region were searched for in a nearby galaxy Maffei 2 to study relation between molecular abundances and physical conditions in galaxies. The (1,1), (2,2),…

天体物理学 · 物理学 2015-06-24 Shuro Takano , Naomasa Nakai , Kentarou Kawaguchi , Toshiaki Takano

We present Karl G Jansky Very Large Array molecular line observations of the nearby starburst galaxy NGC 253, from SWAN: "Survey of Water and Ammonia in Nearby galaxies". SWAN is a molecular line survey at centimeter wavelengths designed to…

星系天体物理 · 物理学 2017-06-28 Mark Gorski , Jürgen Ott , Richard Rand , David S. Meier , Emmanuel Momjian , Eva Schinnerer

We present new Herschel-derived images of warm dust in the Andromeda Galaxy, M31, with unprecedented spatial resolution (~ 30 pc), column density accuracy, and constraints on the three-dimensional distributions of dust temperature and dust…

星系天体物理 · 物理学 2018-08-08 K. A. Marsh , A. P. Whitworth , M. W. L. Smith , O. Lomax , S. A. Eales

Most stars form in clusters and groups rather than in isolation. We present $\lesssim 5^{\prime\prime}$ angular resolution ($\sim 2000$ au, or 0.01 pc) Very Large Array NH$_3$ (1,1), (2,2), and (3,3) and 1.3 cm continuum emission…

星系天体物理 · 物理学 2024-04-12 Rachel K. Friesen , Emma Jarvis

The surroundings of Luminous Blue Variable (LBV) stars are excellent laboratories to study the effects of their high UV radiation, powerful winds, and strong ejection events onto the surrounding gas and dust. The LBV G79.29+0.46 powered two…

星系天体物理 · 物理学 2014-05-08 J. R. Rizzo , A. Palau , F. M. Jimenez-Esteban , C. Henkel

We present spatially resolved ($0.1'' - 1.0''$) radio maps of Neptune taken from the Very Large Array and Atacama Large Submillimeter/Millimeter Array between $2015-2017$. Combined, these observations probe from just below the main methane…

地球与行星天体物理 · 物理学 2021-04-15 Joshua Tollefson , Imke de Pater , Edward M. Molter , Robert J. Sault , Bryan J. Butler , Statia Luszcz-Cook , David DeBoer

We present the results of our ALMA $\lesssim$0.5 kpc-resolution dense molecular line (HCN and HCO$^{+}$ J=2-1, J=3-2, and J=4-3) observations of 12 nearby (ultra)luminous infrared galaxies ([U]LIRGs). After matching beam sizes of all…

星系天体物理 · 物理学 2023-07-31 Masatoshi Imanishi , Shunsuke Baba , Kouichiro Nakanishi , Takuma Izumi

W51-IRS2 is known to be one of the most prolific sources of interstellar ammonia (NH$_3$) maser lines. So far, however, many of these inversion lines have rarely been studied. Here we report spectrally resolved line profiles for the…

星系天体物理 · 物理学 2025-08-20 E. Alkhuja , C. Henkel , Y. T. Yan , B. Winkel , Y. Gong , G. Wu , T. L. Wilson , A. Wootten , A. Malawi

The temperature is a central parameter affecting the chemical and physical properties of dense cores of interstellar clouds and their evolution to star formation. The chemistry and the dust properties are temperature dependent and the…

星系天体物理 · 物理学 2015-06-03 M. Juvela , J. Harju , N. Ysard , T. Lunttila

We present Herschel SPIRE-FTS intermediate-sampled mapping observations of the central ~8 kpc (~150") of M51, with a spatial resolution of 40". We detect 4 12CO transitions (J=4-3 to J=7-6) and the CI 3P2-3P1 and 3P1-3P0 transitions. We…

We report ALMA continuum and molecular line observations at 0.1 pc resolution toward the super star cluster (SSC) candidate H72.97-69.39 in the N79 region of the LMC. The continuum emission has a sharp peak around the SSC candidate but is…

We present an overview of the first data release (DR1) and first-look science from the Green Bank Ammonia Survey (GAS). GAS is a Large Program at the Green Bank Telescope to map all Gould Belt star-forming regions with $A_V \gtrsim 7$ mag…

We present NH3(1,1) and NH3(2,2) observations of MBM 12, the closest known molecular cloud (65 pc distance), aimed to find evidence for on-going star formation processes. No local temperature (with a T_rot upper limit of 12 K) nor linewidth…

天体物理学 · 物理学 2009-10-31 Jose F. Gomez , Joaquin Trapero , Sergio Pascual , Nimesh Patel , Carmen Morales , Jose M. Torrelles

We present the results from NH$_{3}$ mapping observations towards 34 regions identified by the Red MSX Source (RMS) survey. We have used the Australia Telescope Compact Array to map ammonia (1,1) and (2,2) inversion emission spectra at a…

星系天体物理 · 物理学 2018-11-28 S. J. Billington , J. S. Urquhart , C. Figura , D. J. Eden , T. J. T. Moore