English
Related papers

Related papers: The highly polarized open cluster Trumpler 27

200 papers

The first polarimetric images of the OMC-3 region of the Orion A filamentary molecular cloud are presented. Using the JCMT, we have detected polarized thermal emission at 850 microns from dust along a 6' length of the dense filament. The…

Astrophysics · Physics 2009-10-31 Brenda C. Matthews , Christine D. Wilson

We present near-infrared polarimetric results for N159/N160 star-forming complex, in the Large Magellanic Cloud (LMC) with SIRPOL, the polarimeter of the Infrared Survey Facility (IRSF). We separated foreground sources using their visual…

Astrophysics of Galaxies · Physics 2017-03-08 Jaeyeong Kim , Woong-Seob Jeong , Jeonghyun Pyo , Soojong Pak , Won-Kee Park , Jungmi Kwon , Motohide Tamura

The direction angle of twilight sky background polarization in the celestial sphere points far from solar vertical is found to depend on the ratio of single and multiple scattering contributions. The polarization direction behavior during…

Atmospheric and Oceanic Physics · Physics 2015-03-06 Oleg S. Ugolnikov , Igor A. Maslov

We present an analysis of the globular cluster systems of 28 elliptical galaxies using archival WFPC2 images in the V and I-bands. The V-I color distributions of at least 50% of the galaxies appear to be bimodal {\it at the present level of…

Astrophysics · Physics 2008-11-26 Arunav Kundu , Brad Whitmore

We report the results of photometric monitoring of the Melotte 66 field in BVI filters. Ten variables were identified with nine being new discoveries. The sample includes eight eclipsing binaries of which four are W UMa type stars, one star…

Astrophysics · Physics 2009-11-13 K. Zloczewski , J. Kaluzny , W. Krzeminski , A. Olech , I. B. Thompson

We present a detailed analysis of the upper main sequence of the 1.3 Gyr old open cluster Trumpler 20. High accuracy BV photometry combined with the Very Large Telescope/FLAMES medium-resolution spectroscopy of 954 stars is essential to…

Solar and Stellar Astrophysics · Physics 2015-06-04 I. Platais , C. Melo , S. N. Quinn , J. L. Clem , S. E. de Mink , A. Dotter , V. Kozhurina-Platais , D. W. Latham , A. Bellini

We present polarization measurements in the $2-8 \thinspace \mathrm{keV}$ band from blazar 1ES 0229+200, the first extreme high synchrotron peaked source to be observed by the Imaging X-ray Polarimetry Explorer (IXPE). Combining two…

High Energy Astrophysical Phenomena · Physics 2023-10-04 Steven R. Ehlert , Ioannis Liodakis , Riccardo Middei , Alan P. Marscher , Fabrizio Tavecchio , Iván Agudo , Pouya M. Kouch , Elina Lindfors , Kari Nilsson , Ioannis Myserlis , Mark Gurwell , Ramprasad Rao , Francisco Jose Aceituno , Giacomo Bonnoli , Victor Casanova , Beatriz Agiz-Gonzalez , Juan Escudero , Jorge Otero Santos , Alfredo Sota , Emmanouil Angelakis , Alexander Kraus , Garrett K. Keating , Lucio A. Antonelli , Matteo Bachetti , Luca Baldini , Wayne H. Baumgartner , Ronaldo Bellazzini , Stefano Bianchi , Stephen D. Bongiorno , Raffaella Bonino , Alessandro Brez , Niccolò Bucciantini , Fiamma Capitanio , Simone Castellano , Elisabetta Cavazzuti , Chien-Ting Chen , Stefano Ciprini , Enrico Costa , Alessandra De Rosa , Ettore Del Monte , Laura Di Gesu , Niccolò Di Lalla , Alessandro Di Marco , Immacolata Donnarumma , Victor Doroshenko , Michal Dovčiak , Teruaki Enoto , Yuri Evangelista , Sergio Fabiani , Riccardo Ferrazzoli , Javier A. Garcia , Shuichi Gunji , Kiyoshi Hayashida , Jeremy Heyl , Wataru Iwakiri , Svetlana G. Jorstad , Philip Kaaret , Vladimir Karas , Fabian Kislat , Takao Kitaguchi , Jeffery J. Kolodziejczak , Henric Krawczynski , Fabio La Monaca , Luca Latronico , Simone Maldera , Alberto Manfreda , Frédéric Marin , Andrea Marinucci , Herman L. Marshall , Francesco Massaro , Giorgio Matt , Ikuyuki Mitsuishi , Tsunefumi Mizuno , Fabio Muleri , Michela Negro , C. -Y. Ng , Stephen L. O'Dell , Nicola Omodei , Chiara Oppedisano , Alessandro Papitto , George G. Pavlov , Abel L. Peirson , Matteo Perri , Melissa Pesce-Rollins , Pierre-Olivier Petrucci , Maura Pilia , Andrea Possenti , Juri Poutanen , Simonetta Puccetti , Brian D. Ramsey , John Rankin , Ajay Ratheesh , Oliver J. Roberts , Roger W. Romani , Carmelo Sgro , Patrick Slane , Paolo Soffitta , Gloria Spandre , Douglas A. Swartz , Toru Tamagawa , Roberto Taverna , Yuzuru Tawara , Allyn F. Tennant , Nicholas E. Thomas , Francesco Tombesi , Alessio Trois , Sergey S. Tsygankov , Roberto Turolla , Jacco Vink , Martin C. Weisskopf , Kinwah Wu , Fei Xie , Silvia Zane

Study of cosmic dust and planetary aerosols indicate that some of them contain a large number of aggregates of the size that significantly exceeds the wavelengths of the visible light. In some cases such large aggregates may dominate in…

Earth and Planetary Astrophysics · Physics 2012-07-11 Ludmilla Kolokolova , Daniel Mackowski

In diffuse molecular clouds, possible precursors of star-forming clouds, the effect of the magnetic field is unclear. In this work we compare the orientations of filamentary structures in the Polaris Flare, as seen through dust emission by…

Astrophysics of Galaxies · Physics 2016-08-24 G. V. Panopoulou , I. Psaradaki , K. Tassis

We present an extended optical spectropolarimetry of R CrB from 1998 January to 2003 September. The polarization was almost constant in the phase of maximum brightness, being consistent with past observations. We detected, however, temporal…

Astrophysics · Physics 2009-06-23 K. S. Kawabata , Y. Ikeda , H. Akitaya , M. Isogai , K. Matsuda , M. Matsumura , O. Nagae , M. Seki

Massive star binaries are critical laboratories for measuring masses and stellar wind mass-loss rates. A major challenge is inferring viewing inclination and extracting information about the colliding wind interaction (CWI) region.…

Solar and Stellar Astrophysics · Physics 2022-07-06 Richard Ignace , Andrew Fullard , Manisha Shrestha , Yael Naze , Kenneth Gayley , Jennifer L Hoffman , Jamie R Lomax , Nicole St-Louis

(abridged) The polarized thermal radiation at far infrared and submillimeter wavelengths from dust grains in interstellar clouds with irregular magnetic fields is simulated. We show that the polarization properties of quiescent clouds and…

Astrophysics · Physics 2009-11-10 D. S. Wiebe , W. D. Watson

We compiled the polarimetric data for a sample of lines of sight with known abundances of Mg, Si, and Fe. We correlated the degree of interstellar polarization $P$ and polarization efficiency (the ratio of $P$ to the colour excess $E(B-V)$…

Astrophysics of Galaxies · Physics 2015-06-04 N. V. Voshchinnikov , Th. Henning , M. S. Prokopjeva , H. K. Das

A recently discovered filament of polarized starlight that traces a coherent magnetic field is shown to have several properties that are consistent with an origin in the outer heliosheath of the heliosphere: (1) The magnetic field that…

Interstellar linear polarization occurs when starlight passes through elongated dust grains aligned by interstellar magnetic fields. The observed polarization can come from different dust structures along the line of sight (LOS). By…

We present the results of a Monte Carlo radiative transfer code that calculates the polarization produced by multiple Thomson scattering and variable absorptive opacity in a circumstellar disk around one component of a close detached binary…

Astrophysics · Physics 2009-11-10 Jennifer L. Hoffman , Barbara A. Whitney , Kenneth H. Nordsieck

We analyse an all-sky compilation of thirteen data sources with optical interstellar linear polarisation for 3871 {\it Gaia} DR2 and {\it Hipparcos} stars within 500 pc, which do not exhibit a considerable intrinsic polarisation. These data…

Astrophysics of Galaxies · Physics 2019-10-25 George A. Gontcharov , Aleksandr V. Mosenkov

This paper reports results from our long-term $BV(RI)_{c}$ photometric CCD observations of eight pre-main-sequence stars collected from June 2008 to October 2022. These stars are located in the young open cluster Trumpler 37, in the field…

Solar and Stellar Astrophysics · Physics 2023-07-26 Sunay Ibryamov , Gabriela Zidarova , Evgeni Semkov , Stoyanka Peneva

We report the first measurement of the zodiacal light (ZL) polarization spectrum in the near-infrared between 0.8 and 1.8 $\mu$m. Using the low-resolution spectrometer (LRS) on board the Cosmic Infrared Background Experiment (CIBER),…