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相关论文: An Inner Molecular Bar or Disk in NGC 5195

200 篇论文

We present new $^{12}$CO(J=1-0) observations of the barred galaxy NGC 4303 using the Nobeyama 45m telescope (NRO45) and the Combined Array for Research in Millimeter-wave Astronomy (CARMA). The H$\alpha$ images of barred spiral galaxies…

宇宙学与河外天体物理 · 物理学 2010-11-22 Rieko Momose , Sachiko K. Okumura , Jin Koda , Tsuyoshi Sawada

The Sc galaxy NGC 6181 was observed at the 6m telescope of SAO RAS with the scanning Perot-Fabry interferometer in the H-alpha emission line and at the 1m telescope of SAO RAS in BVRI broadband filters with CCD. Subtraction of the mean…

天体物理学 · 物理学 2009-10-28 Olga K. Sil'chenko , Anatoly V. Zasov , Alexandre N. Burenkov , Jacques Boulesteix

We have performed high resolution CO(2-1), CO(1-0), HCN(1-0) and HCO+(1-0) observations of a "low star formation efficiency starburst galaxy" NGC 4527 with the Nobeyama Millimeter Array. The integrated intensity ratios, CO(2-1)/CO(1-0) and…

天体物理学 · 物理学 2007-05-23 T. Shibatsuka , K. Kohno , S. Matsushita , R. Kawabe

We have used the Xco conversion factor, Local Thermal Equilibrium and Large Velocity Gradient approximation to parametrize the cold and warm phase of the interstellar medium from five different low transitions of CO in the central 21"(kpc)…

宇宙学与河外天体物理 · 物理学 2015-05-27 Nuria Piñol-Ferrer , Kambiz Fathi , Andreas Lundgren , Glenn van de Ven

Rotation curves and velocity dispersion profiles are presented for both the stellar and gaseous components along five different position angles (P.A.=5, 50, 95, 125 and 155 degrees) of the nearby barred spiral NGC 6221. The observed…

The NRO/OVRO imaging survey of molecular gas in 20 spiral galaxies is used to test the theoretical predictions on bar-driven gas transport, bar dissolution, and bulge evolution. In most galaxies in the survey we find gas condensations of…

天体物理学 · 物理学 2007-05-23 K. Sakamoto , S. K. Okumura , S. Ishizuki , N. Z. Scoville

We present the first interferometric study of the molecular gas in the metal-poor dwarf starburst galaxy NGC 4214. Our map of the 12CO(1-0) emission, obtained at the OVRO millimeter array, reveals an unexpected structural wealth. We…

天体物理学 · 物理学 2009-10-31 F. Walter , C. Taylor , S. Huettemeister , N. Scoville , V. McIntyre

BIMA CO 1-0 observations are presented of the spiral galaxies NGC 5394 and NGC 5395 that have undergone a recent, grazing encounter. In NGC 5394, 80% of the CO emission detected by BIMA is concentrated in the central 800 pc (FWHM) starburst…

We present millimeter molecular-line complemented by optical observations, along with a reanalysis of archival centimeter HI and continuum data, to infer the global dynamics and determine where dense molecular gas and massive stars…

星系天体物理 · 物理学 2015-06-15 Hsi-An Pan , Jeremy Lim , Satoki Matsushita , Tony Wong , Stuart Ryder

This paper presents the first high-resolution SiO map made in an external galaxy. The nucleus of the nearby barred spiral NGC253 has been observed simultaneously in the v=0, J=2-1 line of SiO and in the J=1-0 line of H13CO+ with the IRAM…

天体物理学 · 物理学 2011-05-23 S. Garcia-Burillo , J. Martin-Pintado , A. Fuente , R. Neri

We have studied stellar and gaseous kinematics as well as stellar population properties in the center of the early-type barred galaxy NGC 4245 by means of integral-field spectroscopy. We have found a chemically distinct compact core, more…

星系天体物理 · 物理学 2010-02-09 O. K. Sil'chenko , I. V. Chilingarian , V. L. Afanasiev

The physical properties of molecular gas can be deduced from the analysis of line intensity ratios, most commonly of the CO isotopomers 12CO and 13CO. Barred galaxies, especially those with central starbursts, provide an excellent…

天体物理学 · 物理学 2007-05-23 S. Huettemeister , S. Aalto

I present a study of the molecular gas and star formation (SF) properties in the inner few kpc of the brightest nearby M82-class starbursts and control non-starbursts, based on high resolution CO (J=1--0) observations, optical and NIR…

天体物理学 · 物理学 2007-05-23 S. Jogee

We present fully sampled ^{12}$CO, ^{13}CO J=2-1, 3-2 maps of the inner $\sim 1'\times 1'$ region of NGC 1068. We combine these measurements with an existing interferometric map of ^{12}CO J=1-0 that includes single dish data and thus…

天体物理学 · 物理学 2009-10-31 Padeli. P. Papadopoulos , E. R. Seaquist

We report the detection of 1 10^7 M_sun of molecular gas in the central region of the S0/E7 galaxy NGC4550, inferred from observations of CO(1-0) emission. Dust is detected in HST WFPC2 images and found to be asymmetrically distributed…

天体物理学 · 物理学 2009-11-06 T. Wiklind , C. Henkel

Galactic winds are essential to regulation of star formation in galaxies. To study the distribution and dynamics of molecular gas in a wind, we imaged the nearby starburst galaxy NGC 1482 in CO ($J=1\rightarrow0$) at a resolution of 1''…

星系天体物理 · 物理学 2020-10-14 Dragan Salak , Naomasa Nakai , Kazuo Sorai , Yusuke Miyamoto

We analyse new integral field spectroscopy of the inner region (central 2.5 kpc) of the spiral galaxy NGC 4321 to study the peculiar kinematics of this region. Fourier analysis of the velocity residuals obtained by subtracting an…

天体物理学 · 物理学 2009-11-13 A. Castillo-Morales , J. Jimenez-Vicente , E. Mediavilla , E. Battaner

New optical and NIR K-band images of the inner 3 kpc region of the nearby Virgo spiral M100 (NGC 4321) display remarkable morphological changes with wavelength. While in the optical the light is dominated by a circumnuclear zone of enhanced…

天体物理学 · 物理学 2009-10-28 J. H. Knapen , J. E. Beckman , I. Shlosman , R. F. Peletier , C. H. Heller , R. S. de Jong

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 have imaged the central ~1kpc of the circumnuclear starburst disk in the galaxy NGC253 in the HCN(1-0), HCO+(1-0), and CO(1-0) transitions at 60pc resolution using the Owens Valley Radio Observatory Millimeter-Wavelength Array (OVRO). We…

天体物理学 · 物理学 2009-06-23 K. K. Knudsen , F. Walter , A. Weiss , A. Bolatto , D. A. Riechers , K. Menten