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相关论文: Ultraviolet Imaging Polarimetry of the Large Magel…

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We report the detection of extended Halpha emission from the tip of the HI disk of the nearby edge-on galaxy UGC 7321, observed with the Multi Unit Spectroscopic Explorer (MUSE) instrument at the Very Large Telescope. The Halpha surface…

In a recent paper (Fumagalli et al. 2017) we reported on the detection of a diffuse H$\alpha$ glow in the outskirts of the nearby, edge-on disc galaxy UGC 7321 observed with the Multi Unit Spectroscopic Explorer (MUSE) at the ESO Very Large…

星系天体物理 · 物理学 2018-11-07 Davide Caruso , Francesco Haardt , Michele Fumagalli , Sebastiano Cantalupo

The diffuse ultraviolet background radiation has been mapped over most of the sky with 2\arcmin \ resolution using data from the \textit{GALEX} survey. We utilize this map to study the correlation between the UV background and clusters of…

星系天体物理 · 物理学 2020-05-27 Brian Welch , Stephan McCandliss , Dan Coe

We present results from the Austral Winter 2003 observing campaign of SPARO, a 450 micron polarimeter used with a two-meter telescope at South Pole. We mapped large-scale magnetic fields in four Giant Molecular Clouds (GMCs) in the Galactic…

天体物理学 · 物理学 2008-11-26 H. Li , G. S. Griffin , M. Krejny , G. Novak , R. F. Loewenstein , M. G. Newcomb , P. G. Calisse , D. T. Chuss

We present a detailed study of the viewing angles of the LMC disk plane. We find that our viewing direction differs considerably from the commonly accepted values, which has important implications for the structure of the LMC. The…

天体物理学 · 物理学 2008-11-26 Roeland P. van der Marel , Maria-Rosa L. Cioni

We compute the cross correlation of the intensity and polarisation from the 5-year WMAP data in different sky-regions with respect to template maps for synchrotron, dust, and free-free emission. We derive the frequency dependence and…

星系天体物理 · 物理学 2015-05-30 N. Macellari , E. Pierpaoli , C. Dickinson , J. Vaillancourt

A 20 arcmin \times 20 arcmin region around 30 Doradus in the Large Magellanic Cloud (LMC) is observed and analyzed in the near-infrared. We obtain polarimetry data in the J, H, and K_s bands using the SIRIUS polarimeter SIRPOL at the…

宇宙学与河外天体物理 · 物理学 2011-10-21 Kim Jaeyeong , Pak Soojong , Choi Minho , Kang Wonseok , Kandori Ryo , Tamura Motohide , Nagata Tetsuya , Kwon Jungmi , Kato Daisuke , Daniel T Jaffe

We present maps of the Large and Small Magellanic Clouds from combined South Pole Telescope (SPT) and Planck data. The Planck satellite observes in nine bands, while the SPT data used in this work were taken with the three-band SPT-SZ…

We present maps and a catalogue containing the J=1-0 12CO parameters of 29 individual molecular clouds in the second-brightest LMC star formation complex, N11. In the southwestern part of N11, molecular clouds occur in a ring or shell…

We present a detailed map of the reddening in a 1.9 x 1.5 degree section of the Large Magellanic Cloud, constructed from UBVI photometry of 2069 O and B main sequence stars. We use two reddening-free photometric parameters to determine the…

天体物理学 · 物理学 2009-10-30 Jason Harris , Dennis Zaritsky , Ian Thompson

When viewed from above the Earth's atmosphere, the nighttime ultraviolet sky background is profoundly dark - up to 100 times fainter than the equivalent visible background as measured by groundbased telescopes. Because the UV background is…

We report the discovery of diffuse ultraviolet light around late-type galaxies out to 5-20 kpc from the midplane using Swift and GALEX images. The emission is consistent with the stellar outskirts in the early-type galaxies but not in the…

星系天体物理 · 物理学 2015-06-18 Edmund Hodges-Kluck , Joel Bregman

We present FORS2@VLT follow-up photometry of YMCA-1, a recently discovered stellar system located 13\degr~from the Large Magellanic Cloud (LMC) center. The deep color-magnitude diagram (CMD) reveals a well-defined main sequence (MS) and a…

We present a comprehensive polarimetric study of 26 nearby molecular clouds in four far-infrared bands (53 $\mu$m to 214 $\mu$m) using 52 archival SOFIA/HAWC+ datasets. Far-infrared dust polarization observations probe the plane-of-sky…

星系天体物理 · 物理学 2026-03-11 Kaitlyn Karpovich , Susan E. Clark , Enrique Lopez-Rodriguez

The observed microlensing events towards the LMC do not have yet a coherent explanation. If they are due to Galactic Halo objects, the nature of these objects is puzzling --- half the halo in dark 0.5 Msol objects. On the other hand,…

天体物理学 · 物理学 2007-05-23 E. Aubourg , N. Palanque-Delabrouille , P. Salati , M. Spiro , R. Taillet

The bright polarized synchrotron emission, away from the Galactic plane, originates mostly from filamentary structures. We implement a filament finder algorithm which allows the detection of bright elongated structures in polarized…

宇宙学与河外天体物理 · 物理学 2023-04-26 F. A. Martire , A. J. Banday , E. Martínez-González , R. B. Barreiro

Interstellar polarization from aligned dust grains can be measured both in transmission at visible and near-infrared wavelengths and in emission at far-infrared and sub-mm wavelengths. These observations can help predict the behavior of…

天体物理学 · 物理学 2015-06-24 Terry J. Jones

Using Blue Horizontal Branch stars identified in the Dark Energy Survey Year 1 data, we report the detection of an extended and lumpy stellar debris distribution around the Magellanic Clouds. At the heliocentric distance of the Clouds,…

星系天体物理 · 物理学 2015-12-23 Vasily Belokurov , Sergey Koposov

Ionization-parameter mapping (IPM) is a powerful technique for tracing the optical depth of Lyman continuum radiation from massive stars. Using narrow-band line-ratio maps, we examine trends in radiative feedback from ordinary HII regions…

星系天体物理 · 物理学 2014-01-28 M. S. Oey , E. W. Pellegrini , J. Zastrow , A. E. Jaskot