Results 71 to 80 of about 81,210 (254)

EFTE-SOAR: Two Giant M Dwarf Flares with Rapid Spectroscopic Follow-up

The Astronomical Journal
We present time-series optical spectroscopy of two stellar flares with complex multi-peaked light curves: a $2.{1}_{-.3}^{+.4}\times 1{0}^{34}$ erg flare from an M8 ultra-cool dwarf, and a $1.{5}_{-.2}^{+.2}\times 1{0}^{35}$ erg superflare from an M4 ...
Hank Corbett, Nathan Galliher, Amy Glazier, Ramses Gonzalez Chavez, Nicholas M. Law, Ward S. Howard, Alan Vasquez Soto, Jeffrey K. Ratzloff, Robert Quimby   +8 more
doaj   +1 more source

The Development of WIFIS: a Wide Integral Field Infrared Spectrograph

, 2012
We present the current results from the development of a wide integral field infrared spectrograph (WIFIS). WIFIS offers an unprecedented combination of etendue and spectral resolving power for seeing-limited, integral field observations in the 0.9-1.8 ...
Chou, Richard C. Y., Chun, Moo-Young, Eikenberry, Stephen S., Eisner, Joshua, Kim, Sang Chul, Ma, Ke, Millar-Blanchaer, Maxwell, Moon, Dae-Sik, Raines, Steven N., Sivanandam, Suresh   +9 more
core   +1 more source

2.5 m wide-field and high-resolution telescope [PDF]

SCIENTIA SINICA Physica, Mechanica & Astronomica, 2019
We propose to construct a 2.5 m wide-field and high-resolution telescope (WeHiT).It will be the first facility in the world with a special innovative design and can conduct bothhigh-resolution solar observations and the wide-field night sky survey. Its scientific objectivescover solar physics, time-domain astronomy, galactic astrophysics, and exoplanet
FANG Cheng, GU BoZhong, YUAN XiangYan, DING MingDe, CHEN PengFei, DAI ZiGao, LI XiangDong, SHI Yong, XIE JiWei, BAI JinMing, QU ZhongQuan, HAO Qi, QUO Yang, CHENG Xin, LI Zhen   +14 more
openaire   +1 more source

Feasibility Study for Application of Digitized Henize Mt. Wilson Michigan Southern Sky Hα$$ \boldsymbol{\alpha} $$ Survey Low‐Dispersive Spectral Plates for Searches for Anomalous and Highly Redshifted Objects

Astronomische Nachrichten, EarlyView.
ABSTRACT The goal of this study is to confirm the feasibility of the use of digitized low dispersive MtWilson Michigan Southern Sky Hα$$ \alpha $$ survey astronomical photographic plates for modern astrophysical research. The detection of highly redshifted objects, such as early galaxies and quasars, is fundamental to understanding the universe's ...
Tauseef Ahmad Zafar, René Hudec, Marta Mara Merono Vidagany, Fehmi Mejri   +3 more
wiley   +1 more source

Adaptive Detection of Fast-moving Celestial Objects Using a Mixture-of-experts and Physical-inspired Neural Network

The Astronomical Journal
Fast-moving celestial objects are characterized by velocities across the celestial sphere that significantly differ from the motions of background stars.
Peng Jia, Ge Li, Bafeng Cheng, Yushan Li, Rongyu Sun   +4 more
doaj   +1 more source

Environmental Dependencies in the Luminosity Function of Galaxies

, 2005
The evidence is becoming strong that the luminosity function of galaxies varies with environment. Higher density, more dynamically evolved regions appear to have more dwarfs per giant.
Tully, R. Brent
core   +1 more source

Listening to Hong Kong children's perspectives through pretend play

British Educational Research Journal, EarlyView.
Abstract Quality in early childhood education and care (ECEC) has become an increasing concern in recent years. The issue has been regularly discussed by different stakeholders. However, the rising concern regarding quality in ECEC has not seriously taken into account children's perspectives.
Suzannie K. Y. Leung
wiley   +1 more source

Offline assembly of the lobster-eye x-ray telescope based on optical reference transfer [PDF]

AIP Advances
To address the difficulty of focal alignment and optical axis calibration of lobster-eye x-ray telescopes in the absence of an x-ray vacuum environment, an offline visible-light alignment method based on optical reference transfer under atmospheric ...
Yifan Chen, Zhengda Li, Chengbin Wang, Chen Zhang, Zhixing Ling, Xiaohao Ma, Yixiao Han, Yanfeng Dai, Huaqing Cheng, Yujun Tang, Yulong Xue, Zhiwei Cheng, Wei Fu, Xiaojin Sun   +13 more
doaj   +1 more source

A Nulling Wide Field Imager for Exoplanets Detection and General Astrophysics

, 2002
We present a solution to obtain a high-resolution image of a wide field with the central source removed by destructive interference. The wide-field image is created by aperture synthesis with a rotating sparse array of telescopes in space. Nulling of the
Aime, Aime, Aime, Angel, Beichman, Boccaletti, Bracewell, de Bruijne, Dermott, F. Roddier, Guyon, Guyon, Hajian, Jenniskens, Kresak, Labeyrie, Leger, Liou, Lyot, Malbet, Mennesson, Nakamura, O. Guyon, Peacock, Pedretti, Rando, Reach, Riaud, Roddier, Roddier, Rouan, Sykes, Wyne   +32 more
core   +2 more sources

Transendocardial injection of expanded autologous CD34+ cells after myocardial infarction: Design of the EXCELLENT trial

ESC Heart Failure, Volume 12, Issue 2, Page 1455-1463, April 2025.
Abstract Aims The extent of irreversible cardiomyocyte necrosis after acute myocardial infarction (AMI) is a major determinant of residual left ventricular (LV) function and clinical outcome. Cell therapy based on CD34+ cells has emerged as an option to help repair the myocardium and to improve outcomes.
Jerome Roncalli, François Roubille, Nicolas Meyer, Giulio Pompilio, Lionel Leroux, Philippe Henon, Guillaume Trebuchet, Anthony Criquet, Matthieu de Kalbermatten, Eric Saloux, Alain Manrique, Pierre‐Yves Marie, Deepak L. Bhatt, Scott D. Solomon, Gilles Montalescot, David E. Newby, Faiez Zannad, on behalf of the EXCELLENT Trial Investigators   +17 more
wiley   +1 more source