中文
相关论文

相关论文: A pilot study of the radio-continuum emission from…

200 篇论文

We present an updated and newly compiled radio-continuum data-base for MASH PNe detected in the extant large scale "blind" radio-continuum surveys (NVSS, SUMSS/MGPS-2 and PMN) and, for a small number of MASH PNe, observed and detected in…

太阳与恒星天体物理 · 物理学 2015-05-20 I. S. Bojicic , Q. A. Parker , M. D. Filipovic , D. J. Frew

We conducted research on the classification and physical properties of 10 objects from the HASH (Hong Kong/Australian Astronomical Observatory/Strasbourg Observatory H-alpha Planetary Nebula (PN)) database with small angular sizes (<…

太阳与恒星天体物理 · 物理学 2023-09-28 Utkan Temiz , Nazım Aksaker , Aysun Akyuz

We report the extragalactic radio-continuum detection of 15 planetary nebulae (PNe) in the Magellanic Clouds (MCs) from recent Australia Telescope Compact Array+Parkes mosaic surveys. These detections were supplemented by new and high…

宇宙学与河外天体物理 · 物理学 2015-05-13 M. D. Filipović , M. Cohen , W. A. Reid , J. L. Payne , Q. A. Parker , E. J. Crawford , I. S. Bojičić , A. Y. De Horta , A. Hughes , J. Dickel , F. Stootman

We present 21 new radio-continuum detections at catalogued planetary nebula (PN) positions in the Large Magellanic Cloud (LMC) using all presently available data from the Australia Telescope Online Archive at 3, 6, 13 and 20 cm.…

星系天体物理 · 物理学 2017-03-07 Howard Leverenz , Miroslav D. Filipovic , B. Vukotic , D. Urosevic , Kevin Grieve

We observed 64 newly identified galactic bulge planetary nebulae in the radio continuum at 3 and 6 cm with the Australia Telescope Compact Array. We present their radio images, positions, flux densities, and angular sizes. The survey…

天体物理学 · 物理学 2009-11-06 Griet C. Van de Steene , George H. Jacoby

We have used the Cornish radio catalogue combined with the use of multi-wavelength data to identify 62 new Planetary Nebula (PN) candidates close to the Galactic mid-plane. Of this sample 11 have weak optical counterparts in deep narrow…

星系天体物理 · 物理学 2018-08-08 Vasiliki Fragkou , Quentin A. Parker , Ivan S. Bojicic , Nazim Aksaker

Aims. We studied the characteristics of planetary nebulae (PNe) that show both OH maser and radio continuum emission (hereafter OHPNe). These have been proposed to be very young PNe, and therefore, they could be key objects for…

太阳与恒星天体物理 · 物理学 2015-06-11 L. Uscanga , J. F. Gómez , O. Suárez , L. F. Miranda

We present a new radio-selected sample of PNe from the CORNISH survey. This is a radio continuum survey of the inner Galactic plane covering Galactic longitude, $10^\circ <l< 65^\circ$ and latitude, $|b| < 1^\circ$ with a resolution of…

太阳与恒星天体物理 · 物理学 2018-08-03 T. Irabor , M. G. Hoare , R. D. Oudmaijer , J. S. Urquhart , S. Kurtz , S. L. Lumsden , C. R. Purcell , A. A. Zijlstra , G. Umana

We present preliminary results from spectral observations of four candidate radio sources co-identified with known planetary nebulae (PNe) in the Small Magellanic Cloud (SMC). These were made using the Radcliffe 1.9-meter telescope in…

天体物理学 · 物理学 2009-11-13 J. L. Payne , M. D. Filipović , E. J. Crawford , A. Y. De Horta , G. L. White , F. H. Stootman

Airborne and space-based low-resolution spectroscopy in the 1980s discovered tantalizing quantitative relationships between the gas phase C/O abundance ratio in planetary nebulae (PNe) and the fractions of total far-infrared luminosity…

天体物理学 · 物理学 2009-11-13 Martin Cohen , Michael J. Barlow

A detailed examination of new high quality radio catalogues (e.g. Cornish) in combination with available mid-infrared (MIR) satellite imagery (e.g. Glimpse) has allowed us to find 70 new planetary nebula (PN) candidates based on existing…

星系天体物理 · 物理学 2017-11-15 Vasiliki Fragkou , Ivan Bojičić , David Frew , Quentin Parker

The radio emission from the youngest known Planetary nebula, SAO244567, has been mapped at 1384, 2368, 4800, 8640, 16832 and 18752 MHz by using the Australian Telescope Compact Array (ATCA). These observations constitute the first detailed…

天体物理学 · 物理学 2009-11-13 G. Umana , C. Trigilio , L. Cerrigone , C. S. Buemi , P. Leto

Using the Australia Telescope Compact Array (ATCA) we have imaged the fields around five promising pulsar candidates to search for radio pulsar wind nebulae (PWNe). We have used the ATCA in its pulsar gating mode; this enables an image to…

天体物理学 · 物理学 2009-10-31 B. W. Stappers , B. M. Gaensler , S. Johnston

We present a supplement to the Macquarie/AAO/Strasbourg H$\alpha$ planetary nebulae (PNe) catalogue (MASH), which we denote MASH-II. The supplement consists of over 300 true, likely and possible new Galactic PNe found after re-examination…

天体物理学 · 物理学 2009-11-13 B. Miszalski , Q. A. Parker , A. Acker , J. L. Birkby , D. J. Frew , A. Kovacevic

We report on a sensitive survey for radio pulsar wind nebulae (PWN) towards 27 energetic and/or high velocity pulsars. Observations were carried out at 1.4 GHz using the Very Large Array and the Australia Telescope Compact Array, and…

天体物理学 · 物理学 2015-06-24 B. M. Gaensler , B. W. Stappers , D. A. Frail , D. A. Moffett , S. Johnston , S. Chatterjee

We compare H-alpha, radio continuum, and Spitzer Space Telescope (SST) images of 58 planetary nebulae (PNe) recently discovered by the Macquarie-AAO-Strasbo- urg H-alpha PN Project (MASH) of the SuperCOSMOS H-alpha Survey. Using InfraRed…

Radio continuum observations trace thermal emission of ionized plasma in planetary nebulae and bring useful information on nebular geometries. A model of homogeneous sphere or shell cannot fit the nebular spectra and brightness…

We have analysed the radio fluxes for 264 planetary nebulae for which reliable measurements of fluxes at 1.4 and 5 GHz, and of nebular diameters are available. For many of the investigated nebulae the optical thickness is important,…

天体物理学 · 物理学 2009-11-06 N. Siodmiak , R. Tylenda

We present mapping, profiles and photometry for 24 planetary nebulae (PNe) detected in the GLIMPSE 3D mid-infrared (MIR) survey of the Galactic plane. The PNe show many of the properties observed in previous studies of these sources,…

星系天体物理 · 物理学 2010-12-15 J. A. Quino-Mendoza , J. P. Phillips , G. Ramos-Larios

We present Very Large Array (VLA) observations of H2O and OH masers, as well as radio continuum emission at 1.3 and 18 cm toward three sources previously cataloged as planetary nebulae (PNe) and in which single-dish detections of H2O masers…

‹ 上一页 1 2 3 10 下一页 ›