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相关论文: The Radio Ammonia Mid-Plane Survey (RAMPS) Pilot S…

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We describe the HI component of the Southern Galactic Plane Survey (SGPS). The SGPS is a large-scale project to image at arcminute resolution the HI spectral line and 21 cm continuum emission in parts of the plane of the Milky Way. The…

天体物理学 · 物理学 2009-11-10 N. M. McClure-Griffiths , J. M. Dickey , B. M. Gaensler , A. J. Green , M. Haverkorn , S. Strasser

The ALHAMBRA (Advance Large Homogeneous Area Medium Band Redshift Astronomical) survey has observed 8 different regions of the sky, including sections of the COSMOS, DEEP2, ELAIS, GOODS-N, SDSS and Groth fields using a new photometric…

The C-Band All-Sky Survey (C-BASS) has observed the Galaxy at 4.76GHz with an angular resolution of $0.73^\circ$ full-width half-maximum, and detected Galactic synchrotron emission with high signal-to-noise ratio over the entire northern…

We present the Submillimeter Array observation of the CO J=2-1 transition towards the northern galaxy, ARP 302N, of the early merging system, ARP 302. Our high angular resolution observation reveals the extended spatial distribution of the…

天体物理学 · 物理学 2009-11-13 Yiping Ao , Dinh-V-Trung , Jeremy Lim , Ji Yang , Satoki Matsushita

We present new radio-frequency interferometric maps of emission from the 14NH3, 15NH3, and 14NH2D isotopologues of ammonia, and the 12CH3OH and 13CH3OH isotopologues of methanol toward Sgr B2(N). With a resolution of ~3'' (0.1 pc), we are…

星系天体物理 · 物理学 2018-12-26 E. A. C. Mills , J. Corby , A. R. Clements , N. Butterfield , P. Jones , M. Cunningham , J. Ott

We report the detection of the ground state rotational emission of ammonia, ortho-NH$_3$ $(J_K=1_0\rightarrow0_0)$ in a gravitationally lensed, intrinsically hyperluminous, star-bursting galaxy at $z=2.6$. The integrated line profile is…

星系天体物理 · 物理学 2022-10-05 M. J. Doherty , J. E. Geach , R. J. Ivison , K. M. Menten , A. M. Jacob , J. Forbrich , S. Dye

Measurements of redshifted 21-cm emission of neutral hydrogen at <30 MHz have the potential to probe the cosmic "dark ages," a period of the universe's history that remains unobserved to date. Observations at these frequencies are…

We present the first results from our Red Optical Planet Survey (ROPS) to search for low mass planets orbiting late type dwarfs (M5.5V - M9V) in their habitable zones (HZ). Our observations, with the red arm of the MIKE spectrograph (0.5 -…

地球与行星天体物理 · 物理学 2015-06-04 J. R. Barnes , J. S. Jenkins , H. R. A. Jones , P. Rojo , P. Arriagada , A. Jordan , D. Minniti , M. Tuomi , S. V. Jeffers , D. Pinfield

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

The Andromeda galaxy (M31) is our closest neighbouring spiral galaxy, making it an ideal target for studying the physics of the interstellar medium in a galaxy very similar to our own. Using new observations of M31 at 4.76GHz by the C-Band…

The most popular method of the broad-line region size estimation in active galactic nuclei (AGN) is the reverberation mapping based on measuring the time delay between the continuum flux and the flux in the emission lines. In our work, we…

天体物理仪器与方法 · 物理学 2020-01-29 Eugene Malygin , Roman Uklein , Elena Shablovinskaya , Aleksander Perepelitsyn , Aleksandra Grokhovskaya

The on-going PALFA survey is searching the Galactic plane (|b| < 5 deg., 32 < l < 77 deg. and 168 < l < 214 deg.) for radio pulsars at 1.4 GHz using ALFA, the 7-beam receiver installed at the Arecibo Observatory. By the end of August 2012,…

With the 100-m telescope at Effelsberg, 19 ammonia (NH3) maser lines have been detected toward the prominent massive star forming region W51-IRS2. Eleven of these inversion lines, the (J,K) = (6,2), (5,3), (7,4), (8,5), (7,6), (7,7), (9,7),…

星系天体物理 · 物理学 2015-06-12 C. Henkel , T. L. Wilson , H. Asiri , R. Mauersberger

We have mapped the total sky brightness at 1465 MHz in two adjacent 60-degree declination bands with the portable 5.5-m parabolic reflector of the Galactic Emission Mapping (GEM) project, an on-going international collaboration to survey…

天体物理学 · 物理学 2007-05-23 C. Tello , T. Villela , G. F. Smoot , S. Torres , M. Bersanelli

Based on measurements with the Effelsberg 100-m telescope, a multi-line study of molecular species is presented toward the gravitational lens system PKS1830-211. Obtaining average radial velocities and performing Large Velocity Gradient…

宇宙学与河外天体物理 · 物理学 2015-05-13 C. Henkel , K. M. Menten , M. T. Murphy , N. Jethava , V. V. Flambaum , J. A. Braatz , S. Muller , J. Ott , R. Q. Mao

Methanol masers at 6.7 GHz are known to be tracers of high-mass star formation in our Galaxy. In this paper, we study the large scale physical conditions in the star forming clumps/cores associated with 6.7 GHz methanol masers using…

太阳与恒星天体物理 · 物理学 2015-06-05 J. D. Pandian , F. Wyrowski , K. M. Menten

New high-resolution far-infrared (FIR) observations of both ortho- and para-NH3 transitions toward IRC+10216 were obtained with Herschel, with the goal of determining the ammonia abundance and constraining the distribution of NH3 in the…

We present the first aperture synthesis unbiased spectral line survey toward an extragalactic object. The survey covered the 40 GHz frequency range between 202 and 242 GHz of the 1.3 mm atmospheric window. We find that 80% of the observed…

宇宙学与河外天体物理 · 物理学 2015-05-20 S. Martin , M. Krips , J. Martin-Pintado , S. Aalto , J. -H. Zhao , A. B. Peck , G. R. Petitpas , R. Monje , T. R. Greve , T. An

The mid-infrared (mid-IR) spectral region holds great promise for new laser-based sensing technologies, based on measuring strong mid-IR molecular absorption features. Practical applications have been limited to date, however, by current…

仪器与探测器 · 物理学 2019-04-01 R. I. Woodward , M. R. Majewski , D. D. Hudson , S. D. Jackson