Results 71 to 80 of about 12,020 (316)

Photometry of Variable Stars from Dome A, Antarctica [PDF]

, 2011
Dome A on the Antarctic plateau is likely one of the best observing sites on Earth thanks to the excellent atmospheric conditions present at the site during the long polar winter night.
Alcock, Baglin, Boisnard, Breger, Buchler, Carl R. Pennypacker, Daniel Luong-Van, Donald G. York, Huigen Yang, Ji Yang, John W. V. Storey, Jon S. Lawrence, Kaluzny, Kevin Krisciunas, Lasker, Lifan Wang, Lingzhi Wang, Long-Long Feng, Lucas M. Macri, Michael C. B. Ashley, Monet, Pojmanski, Qiang Liu, Riaz, Samus, Saunders, Smith, Storey, Wright, Xiangqun Cui, Xiangyan Yuan, Xu Zhou, Xuefei Gong, Zhaohui Shang, Zhenxi Zhu, Zhou, Zonghong Zhu, Zou   +37 more
core   +3 more sources

Observational Properties of β Cephei Stars: 88 New Samples Discovered Based on TESS and Gaia Data

The Astrophysical Journal Supplement Series
We present a systematic investigation of β Cephei (BCEP) stars by integrating photometric data from the Transiting Exoplanet Survey Satellite (TESS) with astrometric parameters from Gaia Data Release 3.
Xiang-dong Shi, Sheng-bang Qian, Li-ying Zhu, Lin-jia Li, Er-gang Zhao, David Mkrtichian, Farkhodjon Khamrakulov, Wen-xu Lin   +7 more
doaj   +1 more source

Four New Delta Scuti Pulsators from a Variability Survey of 131 Stars

, 2002
In a photometric variability survey of 131 stars with B < 14 mag, we have found four new Delta Scuti stars. We were sensitive to oscillation amplitudes as low as a few mmag.
Alexei V. Filippenko, Eyer L., Groot P., Hog E., J. L. Sokoloski, Kholopov P. N., Lars Bildsten, Lopez de Coca P., Munari U., Petersen J. O., Pojmanski G., R. Chornock, Sokoloski J. L., Udalski A., Udalski A., Udalski A., Viskum M., Viskum M.   +17 more
core   +2 more sources

Oncogenic DMTF1β promotes cancer cell motility by regulating autophagy through ULK1 stabilization

Molecular Oncology, EarlyView.
In the current study, we demonstrate that the oncogene DMTF1β regulates ULK1 stability by reducing its proteasomal degradation in cancer cells. This stabilization enables ULK1 to induce autophagy, which in turn facilitates cancer cell migration. Consequently, reduced DMTF1β levels lead to decreased autophagy and impaired cancer cell migration.
Jun Xu, Nicolas J. Niklaus, Anna M. Schläfli, Igor Tokarchuk, Magali Humbert, Federico La Manna, Bich Vu, David Maul, Ramin Radpour, Marianna Kruithof‐de Julio, Inti Zlobec, Jörn Dengjel, Bruce E. Torbett, Mario P. Tschan   +13 more
wiley   +1 more source

The first CCD photometric study of the open cluster NGC 2126

, 2003
We present the first CCD photometric observations of the northern open cluster NGC 2126. Data were taken on eight nights in February and December 2002 with a total time span of ~57 hours.
A. Derekas, A. Gáspár, Arentoft, Bertelli, Bessell, Breger, Breger, Chevalier, Choo, Cs. Kiss, Cuffey, Cutispoto, Frandsen, Gilliland, Gy. M. Szabó, Handler, K. Sárneczky, Kim, Kim, Kim, Kiss, L. L. Kiss, M. Váradi, Mkrtichian, Monet, Ohshima, Reed, Rieke, Rodríguez, Rodríguez, Rucinski, S. Kaspi, Stellingwerf, T. R. Bedding, Thompson, Willems   +35 more
core   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Nuclear pore links Fob1‐dependent rDNA damage relocation to lifespan control

FEBS Open Bio, EarlyView.
Damaged rDNA accumulates at a specific perinuclear interface that couples nucleolar escape with nuclear envelope association. Nuclear pores at this site help inhibit Fob1‐induced rDNA instability. This spatial organization of damage handling supports a functional link between nuclear architecture, rDNA stability, and replicative lifespan in yeast.
Yamato Okada, Mina Iwaki, Kyosuke Hagiri, Rei Izumi, Masahiko Harata, Chihiro Horigome   +5 more
wiley   +1 more source

Distance and mass of pulsating stars from multicolour photometry and atmospheric models

, 2003
For determining distance and mass of pulsating stars a new, purely photometric method is described in which radial velocity observations are not needed. The method is compared with the Baade-Wesselink method. As an example the RR Lyrae variable SU Dra is
Baker, Barcza, Barnes, Baschek, Bessell, Buonaura, Castelli, Code, Cohen, Fernley, Gautschy, Gratton, Gratton, Hanbury Brown, Jones, Kurucz, Liu, Liu, Oke, S. Barcza, Sabbey, Siegel, Tüg   +22 more
core   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

The RR Lyrae Luminosity Metallicity Relation Revisited

The Astronomical Journal
We utilize a set of internally consistent absolute ages for a sample of ten Galactic globular clusters to determine the variation of the slope with the zero point of the M _V (RR) ∼ [Fe/H] relation for RR Lyrae variables.
Ata Sarajedini
doaj   +1 more source