Results 41 to 50 of about 22,251 (204)

An efficient way to use MS‐CLEAN associated with Shannon's entropy

IET Image Processing, Volume 15, Issue 10, Page 2319-2331, August 2021., 2021
Abstract This article covers deconvolution methods in the context of radio astronomical images. A new formulation is proposed to deal with negative brightness, deconvoluting separately the positive and negative brightness of the sky. The positive brightness is physically possible, but negative brightness is a degradation product.
Ramon G. Campos, Evandro O. T. Salles
wiley   +1 more source

THE STUDY OF GALACTIC BEAT CEPHEIDS WITH APPLICATION OF ITS RESULTS TO THOSE IN THE MAGELLANIC CLOUDS

Odessa Astronomical Publications, 2014
A thorough study of the correlation between P1=P0 ratio, fundamental period, and chemical composition (abundances of metals that compose Z) was conducted to investigate the significance of the iron-peak elements on the ratio. The results suggested a more
F. A. Chekhonadskikh, V. V. Kovtyukh, S. I. Belik   +2 more
doaj   +1 more source

Five Massive Contact Binaries with Twin Components in LMC

The Astrophysical Journal, 2023
Massive contact binaries refer to the close binary systems in which the components have filled their respective Roche lobes and share a common envelope with early-type spectra.
Fu-Xing Li, Sheng-Bang Qian, Chu-Qi Wu, Min-Yu Li, Er-Gang Zhao, Wen-Ping Liao, Li-Ying Zhu, Qi-Bin Sun, Jia Zhang   +8 more
doaj   +1 more source

STEP: the VST survey of the SMC and the Magellanic Bridge - I : Overview and first results [PDF]

, 2014
STEP (the SMC in Time: Evolution of a Prototype interacting late-type dwarf galaxy) is a Guaranteed Time Observation survey being performed at the VST (the ESO VLT Survey Telescope). STEP will image an area of 74 sq. deg.
A. Grado, A. Nota, Andersen, Arnaboldi, Bagheri, Bekki, Bekki, Bertin, Bertin, Bica, Bica, Binney, Bothun, Bouret, Brueck, Brüns, Butler, Capaccioli, Carlson, Carvalho, Castellani, Chiosi, Cignoni, Cignoni, Cignoni, Cignoni, Cignoni, Cignoni, Cioni, Cooper, D. Romano, De Lucia, de Vaucouleurs, Djorgovski, Dohm-Palmer, Dolphin, E. Brocato, E. Cappellaro, E. K. Grebel, E. Sabbi, Elson, Elson, F. Cusano, F. Getman, F. Palla, Fukugita, G. Clementini, G. Raimondo, Girardi, Glatt, Glatt, Glatt, Glatt, Glatt, Gnedin, Gonzalez, Grado, Gunn, Harries, Harris, Harris, Haschke, Haschke, Haschke, Hatzidimitriou, Hatzidimitriou, Hill, Hindman, Hodge, Hunter, Hunter, I. Musella, Irwin, Irwin, Ivezić, J. S. Gallagher, Jordi, Kallivayalil, Kallivayalil, Kayser, Keller, King, Kuijken, Kunth, Kurt, L. Limatola, Lamers, Lindsay, M. Cantiello, M. Capaccioli, M. Cignoni, M. Dall'Ora, M. Marconi, M. Tosi, M.-R. L. Cioni, Mackey, Marigo, McCumber, Muller, N. R. Napolitano, Nota, Noël, Noël, Noël, Olsen, P. Schipani, Plummer, Robotham, Rochau, Rubele, Russell, S. Zaggia, Sabbi, Sabbi, Saha, Schipani, Sewiło, Shapley, Shara, Smith, Staveley-Smith, Stetson, Stetson, Subramanian, Subramanian, Tolstoy, Tosi, Tosi, Udalski, Udalski, V. Ripepi, van Dyk, Vandenberg, Weisz, Zaritsky, Zaritsky   +135 more
core   +3 more sources

Magnetic Field Structure in the small Magellanic Cloud [PDF]

Symposium - International Astronomical Union, 1990
The present status of an ongoing observational program to study the magnetic field structure of the SMC by means of optical polarimetry is presented. Being the SMC more distant than the LMC, the observed optical polarization would mainly originate in the distorted outer layers in the front side of the SMC.
A.M. Magalhães, N. Loiseau, C.V. Rodrigues, V. Piirola   +3 more
openaire   +1 more source

New 6 and 3-cm radio-continuum maps of the Small Magellanic Cloud - part II: Point source catalogue [PDF]

Serbian Astronomical Journal, 2012
We present two new catalogues of radio-continuum sources in the field of the Small Magellanic Cloud (SMC). These catalogues contain sources found at 4800 MHz (λ=6cm) and 8640 MHz (λ=3cm).
Wong G.F., Crawford E.J., Filipović M.D., de Horta A.Y., Tothill N.F.H., Collier J.D., Drašković D., Galvin T.J., Payne J.L.   +8 more
doaj   +1 more source

New 6 and 3-cm radio-continuum maps of the Small Magellanic Cloud, Part I: The maps [PDF]

Serbian Astronomical Journal, 2011
We present new 6 and 3-cm radio-continuum maps of the Small Magellanic Cloud (SMC), created with the "peeling" technique and a joint deconvolution. The maps have resolutions of 3000 and 2000 and r.m.s., noise of 0.7 and 0.8 mJy/beam at 6 and 3 ...
Crawford E. J., Filipović M.D., de Horta A.Y., Wong G.F., Tothill N.F.H., Drašković D., Collier J.D., Galvin T.J.   +7 more
doaj   +1 more source

The Small Magellanic Cloud [PDF]

Symposium - International Astronomical Union, 1959
In 1957 a two-year photometric study of the Small Magellanic Cloud, sponsored by Indiana University and supported by the National Science Foundation was completed. Six region swere investigated. They are three on the edge of the SMC centered on conspicuous star clusters and three nearer the center.
openaire   +1 more source

Discovery of 14 radio pulsars in a survey of the Magellanic Clouds [PDF]

, 2006
A systematic survey of the Large and Small Magellanic Clouds for radio pulsars using the Parkes radio telescope and the 20-cm multibeam receiver has resulted in the discovery of 14 pulsars and the redetection of five of the eight previously known spin ...
Crawford, Fronefield, Fan, G., Kaspi, V. M., Lyne, A. G., Manchester, R. N.   +4 more
core   +3 more sources

Radio planetary nebulae in the Small Magellanic Cloud [PDF]

Astrophysics and Space Science, 2016
We present ten new radio continuum (RC) detections at catalogued planetary nebula (PN) positions in the Small Magellanic Cloud (SMC): SMPS6, LIN 41, LIN 142, SMP S13, SMP S14, SMP S16, J18, SMP S18, SMP S19 and SMP S22. Additionally, six SMC radio PNe previously detected, LIN 45, SMP S11, SMPS17, LIN321, LIN339 and SMPS24 are also investigated (re ...
Leverenz, Howard (R19911), Filipovic, Miroslav (R7673), Bojicic, Ivan S., Crawford, Evan J. (R14178), Collier, Jordan D. (S30631), Grieve, Kevin (S31382), Draskovic, Danica, Reid, Warren A.   +7 more
openaire   +4 more sources