Results 51 to 60 of about 324,439 (295)

The Orbits of Isolated Dwarfs in the Local Group from New 3D Kinematics: Constraints on First Infall, Backsplash, and Quenching Mechanisms

The Astrophysical Journal
It is commonly supposed that quenched field dwarfs near the edge of the Local Group (LG) are backsplash galaxies, having previously orbited within the Milky Way (MW) or M31’s virial radius, whereas galaxies on first infall should still have gas and star ...
Paul Bennet, Ekta Patel, Sangmo Tony Sohn, Andrés del Pino, Roeland P. van der Marel, Mark A. Fardal, Kristine Spekkens, Laura Congreve Hunter, Gurtina Besla, Laura L. Watkins, Daniel R. Weisz   +10 more
doaj   +1 more source

Using dwarf satellite proper motions to determine their origin [PDF]

, 2011
The highly organised distribution of satellite galaxies surrounding the Milky Way is a serious challenge to the concordance cosmological model. Perhaps the only remaining solution, in this framework, is that the dwarf satellite galaxies fall into the ...
Angus, Angus, Antonaldo Diaferio, Binney, Bournaud, Bovy, de Blok, Deason, D’Onghia, Efstathiou, G. W. Angus, Gentile, Gnedin, Governato, Kallivayalil, Kallivayalil, Kang, Klimentowski, Klypin, Kosowsky, Kroupa, Kroupa, Kroupa, Li, Libeskind, Libeskind, Libeskind, Lynden, Madau, Mateo, McGaugh, McGaugh, Metz, Metz, Metz, Milgrom, Milgrom, Moore, Navarro, Nichols, Pasetto, Pasetto, Pavel Kroupa, Peebles, Piatek, Piatek, Piatek, Piatek, Piatek, Sales, Sales, Serra, Spergel, Springel, Tiret, Tormen, Veilleux, Walker, Wechsler, Xue, Zentner   +60 more
core   +1 more source

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

FEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill, Yelyzaveta Pulnova, Elke De Zitter, Helen M. Ginn, Briony A. Yorke   +4 more
wiley   +1 more source

Proper Motions and Orbits of Distant Local Group Dwarf Galaxies from a Combination of Gaia and Hubble Data

The Astrophysical Journal
We have determined the proper motions (PMs) of 12 dwarf galaxies in the Local Group (LG), ranging from the outer Milky Way (MW) halo to the edge of the LG.
Paul Bennet, Ekta Patel, Sangmo Tony Sohn, Andrés del Pino Molina, Roeland P. van der Marel, Mattia Libralato, Laura L. Watkins, Antonio Aparicio, Gurtina Besla, Carme Gallart, Mark A. Fardal, Matteo Monelli, Elena Sacchi, Erik Tollerud, Daniel R. Weisz   +14 more
doaj   +1 more source

A Spectroscopic Method to Measure Macho Proper Motions

, 1994
A Massive Compact Halo Object (Macho) that lenses a background star will magnify different parts of the rotating stellar disk by varying amounts. The differential magnification will cause a shift in the centroid of the star's spectral lines during the ...
Gould, Andrew, Maoz, Dan
core   +1 more source

Decreased cold‐sensing function of the transient receptor potential channel TRPM8 from tailed amphibians

FEBS Open Bio, EarlyView.
Despite frogs avoiding low temperatures, examination of four salamander species revealed that none avoided cold and all possessed cold tolerance. Functional analysis of TRPM8, a cold sensor, showed that all salamander TRPM8s had lost their cold sensitivity.
Tadahiro Sawao, Daiki Kobayashi, Shogo Hori, Osamu Saitoh   +3 more
wiley   +1 more source

Verification of Hypervelocity Bulge Red Clump Stars

The Astronomical Journal
We verify candidate hypervelocity red clump stars located in the Galactic bulge that were selected based on the VVV and the Gaia DR2 data by Luna et al. To do so, we analyze data from the OGLE-IV survey: difference images and astrometric time series.
Gabriela Wojtkowska, Radosław Poleski
doaj   +1 more source

Cataclysmic Variables in the SUPERBLINK Proper Motion Survey [PDF]

, 2014
We have discovered a new high proper motion cataclysmic variable (CV) in the SUPERBLINK proper motion survey, which is sensitive to stars with proper motions greater than 40 mas/yr.
Lépine, Sébastien, Skinner, Julie N., Thorstensen, John R.   +2 more
core   +3 more sources

Sunspot Proper Motion and Flare Frequency [PDF]

International Astronomical Union Colloquium, 1995
Flare activity of solar active regions is generally believed to depend on a sheared configuration of magnetic fields (Hagyard et al. 1984). There are cases when the shear necessary for a flare can be attributed to the emergence of a new flux in the spot group (Wang 1992).
G. Csepura, L. Györi, A. A. Galal
openaire   +1 more source

The skills required for transition to university and study in biological sciences: A student perspective

FEBS Open Bio, EarlyView.
Bioscience students were asked for their opinions on the value and teaching of skills. 204 responded that teamwork, time management and study skills are necessary to reach University, that scientific writing, research, laboratory and presentation skills are taught effectively during their studies, while other skills are gained inherently through study ...
Janella Borrell, Susan Crennell
wiley   +1 more source