Produção Nacional
Revisado por pares
Hyejeon Cho, John P. Blakeslee, Ana L. Chies-Santos, M. James Jee, Joseph B. Jensen, Eric W. Peng, Young‐Wook Lee,
... in the core of the Coma cluster (Abell 1656). NGC 4874 was observed with the HST Advanced Camera ...
Tópico(s): Astronomy and Astrophysical Research
2016 - IOP Publishing | The Astrophysical Journal
Andrs Jordn, Patrick Ct, Michael J. West, Ronald O. Marzke, D. Minniti, M. Rejkuba,
... in Abell 194, NGC 2832 in Abell 779, NGC 4839 in Abell 1656 and NGC 7768 in Abell 2666) in the range 5400 < ...
Tópico(s): Astrophysics and Cosmic Phenomena
2004 - Institute of Physics | The Astronomical Journal
... 2MFGC 13581, towards the 6 GHz OH absorber NGC 4261 and towards the two 1.6 GHz OH maser sources IRAS 17526+3253 and IRAS 20550+1656. We set upper limits on 33 nondetections. The ... is required to determine the masing regions in NGC 4261 and 2MFGC 13581. IRAS 17526+3253 has narrow 350L systemic masers, and the tentative 5 detection in IRAS 20550+1656 (II Zw 96) strongly resembles massive star formation kilomasers in NGC 2146. The latter two detections increase to eight ...
Tópico(s): Astrophysics and Star Formation Studies
2013 - EDP Sciences | Astronomy and Astrophysics
F. W. Baier, K. Fritze, H. Tiersch,
... the bridge between Coma and A 1367. A 1656 seems to be a cD‐like cluster with NGC 4874 as the only dominating giant central galaxy.
Tópico(s): Stellar, planetary, and galactic studies
1990 - Wiley | Astronomische Nachrichten
... disk-maser), towards the 6 GHz OH absorber NGC 4261 (3C 270 with a twin-jet and dusty torus; broad water maser emission), and towards the two 1.6 GHz OH maser sources IRAS 17526+3253 and IRAS 20550+1656 (possible star formation water masers). We set upper ...
Tópico(s): Radio Astronomy Observations and Technology
2013 - EDP Sciences | Astronomy and Astrophysics
Satoko Sawada‐Satoh, Duk-Gyoo Roh, Se-Jin Oh, Sang-Sung Lee, Do‐Young Byun, Seiji Kameno, Jae-Hwan Yeom, Dong-Kyu Jung, Hyo-Ryoung Kim, Ju-Yeon Hwang,
... molecular absorption in the nearby active galactic nucleus NGC 1052. Utilizing the 1 milliarcsecond resolution achieved by the Korean VLBI Network, we have spatially resolved the HCN absorption against a double-sided nuclear jet structure. Two velocity features of HCN absorption are detected significantly at the radial velocity of 1656 and 1719 km/s, redshifted by 149 and ...
Tópico(s): Astrophysics and Cosmic Phenomena
2016 - IOP Publishing | The Astrophysical Journal Letters
Sheetal Kumar Sahu, Laxmikant Chaware, S. K. Pandey, Samridhi Kulkarni, M. B. Pandge, N. K. Chakradhari,
... super massive black-hole for B2 1257+28 (NGC 4874). We plotted rotation curve for coma cluster (Abell 1656), which indicates the presence of dark matter halo ...
Tópico(s): Stellar, planetary, and galactic studies
2013 - Cambridge University Press | Proceedings of the International Astronomical Union
Hyejeon Cho, John P. Blakeslee, Eric W. Peng, Young‐Wook Lee,
... core of the Coma cluster of galaxies (Abell 1656), centered on the giant elliptical galaxy NGC 4874, we have combined F160W ( H 160 ) near- ...
Tópico(s): Spectroscopy and Chemometric Analyses
2012 - Cambridge University Press | Proceedings of the International Astronomical Union
T. G. Pannuti, E. M. Schlegel, M. D. Filipović, J. L. Payne, Robert Petre, I. Harrus, Wayne D. Staggs, C. K. Lacey,
(Abridged) We conducted a Chandra ACIS observation of the nearby Sculptor Group Sd galaxy NGC 7793. At the assumed distance to NGC 7793 of 3.91 Mpc, the limiting unabsorbed luminosity of the detected discrete X-ray sources (0.2-10.0 keV) is approximately 3x10^36 ergs s^-1. A total of 22 discrete sources were detected at the 3-sigma level or greater including one ultra-luminous X-ray source (ULX). Based on multiwavelength comparisons, we identify X-ray sources coincident with one SNR, the candidate ...
Tópico(s): Gamma-ray bursts and supernovae
2011 - Institute of Physics | The Astronomical Journal
Aaron Dotter, Jason W. Ferguson, Charlie Conroy, A. P. Milone, A. F. Marino, David Yong,
... two stellar populations of the Galactic globular cluster NGC 6752. These populations represent the two extremes of light-element abundance variations in the cluster. NGC 6752 is a benchmark cluster in the study ... sequences in the colour-magnitude diagrams (CMDs) of NGC 6752 is almost exclusively due to spectral effects ...
Tópico(s): Astronomy and Astrophysical Research
2014 - Oxford University Press | Monthly Notices of the Royal Astronomical Society
G. Gavazzi, G. Consolandi, Martha Lucía Morales Gutiérrez, A. Boselli, M. Yoshida,
... the 12 found by Yagi et al. (2010), NGC 4848 (Fossati et al. 2012), and NGC 4921 whose ram pressure stripping is certified by ...
Tópico(s): Stellar, planetary, and galactic studies
2018 - EDP Sciences | Astronomy and Astrophysics
... of the extended radio halo, the radio ~alaxies NGC 4869 and NGC 4874, and the pseudohalo. The flux of the ...
Tópico(s): Astronomical Observations and Instrumentation
1982 - | Astrophysics
D. Espada, Satoki Matsushita, A. B. Peck, C. Henkel, Daisuke Iono, F. P. Israel, S. Müller, G. Petitpas, Y. M. Pihlström, G. B. Taylor, Dinh‐V‐Trung,
We present high resolution images of the 12CO(2-1) emission in the central 1' (1 kpc) of NGC 5128 (Centaurus A), observed using the SMA. We elucidate for the first time the distribution and kinematics of the molecular gas in this region with a resolution of 6'.0 x 2'.4 (100 pc x 40 pc). We spatially resolve the circumnuclear molecular gas in the inner 24'' x 12'' (400 pc x 200 pc), which is elongated along a position angle P.A. = 155 deg and perpendicular to the radio/X-ray jet. The SE and NW components ...
Tópico(s): Stellar, planetary, and galactic studies
2009 - IOP Publishing | The Astrophysical Journal
Duy Cuong Nguyen, Ray Jayawardhana, M. H. van Kerkwijk, A. Brandeker, A. Scholz, Ivana Damjanov,
... previous studies in the Orion Nebula Cluster and NGC 2264, we do not see a clear signature ...
Tópico(s): Stellar, planetary, and galactic studies
2009 - IOP Publishing | The Astrophysical Journal
Marco W. Beijersbergen, Henk Hoekstra, Pieter van Dokkum, J. M. van der Hulst,
... cluster. The shapes of the LFs of the NGC 4839 group support a scenario in which the ...
Tópico(s): Gamma-ray bursts and supernovae
2002 - Oxford University Press | Monthly Notices of the Royal Astronomical Society
Yumin Yang, Jian Wu, Xiao‐Dong Wang, Jie Liu, Fei Ding, Xiaosong Gu,
... cells. Chitin- and chitosan-based nerve guidance conduits (NGCs) were surgically implanted to bridge 10-mm-long ... provided positive evidence that chitin- and chitosan-based NGCs produce the similar beneficial effects on peripheral nerve ...
Tópico(s): Hydrogels: synthesis, properties, applications
2009 - Wiley | Advanced Engineering Materials
É. Brière, S. Cantín, Kristine Spekkens,
In order to better understand the impact of the bar on the evolution of spiral galaxies, we measure the properties of giant H ii regions and the bar in the SB(s)b galaxy NGC 5430. We use two complementary data sets, both obtained at the Observatoire du Mont-Mégantic: a hyperspectral data cube from the imaging Fourier transform spectrograph SpIOMM (Spectromètre-Imageur à transformée de Fourier de l-Observatoire du Mont-Mégantic) and high-resolution spectra across the bar from a long-slit spectrograph. ...
Tópico(s): Astronomy and Astrophysical Research
2012 - Oxford University Press | Monthly Notices of the Royal Astronomical Society
... 0.32 outwards from the cluster center at NGC 4874. As well, there is a strong color- ...
Tópico(s): CCD and CMOS Imaging Sensors
1996 - Institute of Physics | Publications of the Astronomical Society of the Pacific
T. G. Pannuti, E. M. Schlegel, C. K. Lacey,
We present the results of a Chandra observation made of the nearby spiral galaxy NGC 7793: the effective exposure time of this observation was 49094 seconds. Twenty-two discrete sources were identified at a minimum of a 3. We have performed a spectral analysis of the known ultraluminous X-ray source (ULX) in this galaxy: statistically-acceptable fits to the spectrum can be obtained with either a power law model, a bremsstrahlung model or a DISKBB model. We have also searched for counterparts at multiple ...
Tópico(s): Astrophysical Phenomena and Observations
2005 - Cambridge University Press | Proceedings of the International Astronomical Union
Fei Chen, Chengbao Liu, Leizhi Zheng, Feng Chen, Junchao Qian, Yongbin Qiu, Xianron Meng, Zhigang Chen,
... g–C 3 N 4 /C‐0.75 (NGC‐0.75) composite exhibits the highest specific capacitance ... 97%. Meanwhile, the asymmetric supercapacitor based on the NGC‐0.75 shows a high energy density of ...
Tópico(s): Advanced Nanomaterials in Catalysis
2024 - Wiley | Advanced Engineering Materials