Results 51 to 60 of about 908,858 (306)

The Galactic O-Star Spectroscopic Survey (GOSSS). II. Bright Southern Stars [PDF]

, 2013
We present the second installment of GOSSS, a massive spectroscopic survey of Galactic O stars, based on new homogeneous, high signal-to-noise ratio, R ~ 2500 digital observations from both hemispheres selected from the Galactic O-Star Catalog (GOSC). In
Alfaro, E. J., Apellániz, J. Maíz, Arias, J. I., Barbá, R. H., Gamen, R. C., Morrell, N. I., Sota, A., Walborn, N. R.   +7 more
core   +3 more sources

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

Optical Spectroscopy of Distant Red Galaxies

, 2009
We present optical spectroscopic follow-up of a sample of Distant Red Galaxies (DRGs) with K 2.3, in the Hubble Deep Field South, the MS 1054-03 field, and the Chandra Deep Field South. Spectroscopic redshifts were obtained for 15 DRGs. Only 2 out of 15
Franx, Marijn, Illingworth, Garth D., Labbe, Ivo, Rudnick, Gregory, Schreiber, Natascha M. Forster, van Dokkum, Pieter G., Wuyts, Stijn   +6 more
core   +1 more source

The IACOB project. V. Spectroscopic parameters of the O-type stars in the modern grid of standards for spectral classification [PDF]

, 2018
The IACOB and OWN surveys are two ambitious complementary observational projects which have made available a large multi-epoch spectroscopic database of optical high resolution spectra of Galactic massive O-type stars. As a first step in the study of the
Apellániz, J. Maíz, Barbá, R. H., Castro, N., Garcia, M., Herrero, A., Holgado, G., Negueruela, I., Puls, J., Sabín-Sanjulián, C., Simón-Díaz, S.   +9 more
core   +3 more sources

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

Neutron spectroscopic factors of Ni isotopes from transfer reactions

, 2009
177 neutron spectroscopic factors for nickel isotopes have been extracted by performing a systematic analysis of the angular distributions measured from (d,p) transfer reactions. A subset of the extracted spectroscopic factors are compared to predictions
D. Sykes, E. Caurier, Jenny Lee, M. B. Tsang, M. Horoi, S. C. Su, W. G. Lynch   +6 more
core   +1 more source

Early-type stars in the young open cluster NGC 2244 and in the Mon OB2 association I. The multiplicity of O-type stars [PDF]

, 2009
Aims. We present the results obtained from a long-term spectroscopic campaign devoted to the multiplicity of O-type stars in the young open cluster NGC2244 and in the Mon OB2 association. Methods.
Bisiacchi, Chen, Conti, Conti, Conti, Conti, Conti, Cruz-González, De Becker, De Becker, de Wit, E. Gosset, Feldmeier, Frost, Fullerton, G. Rauw, García, Garmany, Gies, González, Gosset, H. Sana, Heck, Hensberge, Hiltner, Huang, Johnson, Kharchenko, L. Mahy, Li, Linder, Lindroos, Liu, M. De Becker, Martins, Martins, Mason, Mason, Massey, Mathys, Mathys, Maíz-Apellániz, Morgan, Morgan, Munari, Ogura, P. Eenens, Penny, Petrie, Plaskett, Pérez, Rauw, Sana, Sana, Sana, Sanford, Simón-Díaz, Stickland, Tadross, Turner, Turner, Underhill, Walborn, Walborn, Walborn, Wang, Y. Nazé, Zagury, Zinnecker   +68 more
core   +2 more sources

Evolutionarily divergent DUF4465 domains have a common vitamin B12‐binding function

FEBS Open Bio, EarlyView.
We show that DUF4465 family proteins, widespread across bacteria from gut microbiomes, hydrothermal vents, and soil, share a common vitamin B12‐binding function. These augmented β‐jellyroll proteins bind vitamin B12 via extended loops. Our findings establish sequence‐diverse DUF4465 proteins as a widespread class of B12‐binding proteins, highlighting ...
Charlea Clarke, Michal Banasik, Rokas Juodeikis, Martin J. Warren, Richard W. Pickersgill   +4 more
wiley   +1 more source

The K20 survey. III. Photometric and spectroscopic properties of the sample

, 2002
The K20 survey is an ESO VLT optical and near-infrared spectroscopic survey aimed at obtaining spectral information and redshifts of a complete sample of about 550 objects to K_s\leq20.0 over two independent fields with a total area of 52 arcmin^2.
A. Cimatti, A. Fontana, A. Renzini, Baugh, Bender, Bertin, Broadhurst, Cimatti, Cohen, Cohen, Cohen, Cole, Cole, Cowie, Cowie, Daddi, Daddi, Daddi, Dalcanton, Djorgovski, Drory, E. Daddi, E. Giallongo, F. Poli, Fasano, Fontana, Fontana, G. Zamorani, Gardner, Gardner, Gavazzi, Gehrels, Giacconi, Glazebrook, Hall, Huang, Impey, Impey, Kauffmann, Kauffmann, Kauffmann, Kinney, Kochanek, Kron, Kümmel, L. Pozzetti, Lilly, M. Mignoli, Madau, Maihara, Marleau, Martini, McLeod, Minezaki, Mobasher, Moorwood, Moorwood, N. Menci, P. Saracco, Pahre, Persson, R. Gilmozzi, Rudnick, S. Cristiani, S. D'Odorico, Saracco, Saracco, Saracco, Scalo, Schlegel, Soifer, Somerville, Songaila, Szokoly, T. Broadhurst, van Dokkum   +75 more
core   +1 more source

Detecting transit signatures of exoplanetary rings using SOAP3.0 [PDF]

, 2017
CONTEXT. It is theoretically possible for rings to have formed around extrasolar planets in a similar way to that in which they formed around the giant planets in our solar system. However, no such rings have been detected to date. AIMS: We aim to test
Akinsanmi, B., Barros, S. C. C., Oshagh, M., Santos, N. C.   +3 more
core   +1 more source