The globular cluster M15 has recently been found to host a possible central black hole with a mass of ∼2000 M⊙. A deep, high-resolution Chandra image failed to detect the “nucleus” of the cluster in X-rays. The upper limit on the X-ray luminosity (Lx ∼< 5.6×10 32 erg s−1) corresponds to a bolometric Eddington ratio of Lbol/LEdd ∼ < (2 − 4)×10−8. Combining this limit with an estimate of the elec...

ABSTRACT We present observations of the stellar kinematics centre core collapsed globular cluster M15 obtained with MUSE integral field spectrograph on Very Large Telescope operating in narrow mode. Thanks to use adaptive optics, we obtain a spatial resolution 0.1 arcsec and are able reliably measure radial velocities 864 stars within 8 M15, thus providing largest sample ever for innermost regi...

We present a pulsar candidate identification and confirmation procedure based on position-switch mode during the search observations. This method enables simultaneous of in single observation, by utilizing different spatial features signal radio frequency interference (RFI). Based this method, we performed test observations globular clusters M3, M15, M92. discovered confirmed new pulsar, M3F, d...

We present a detailed chemical abundance study of seven giant stars in M68 including six red giants and one post-AGB star. We find significant differences in the gravities determined using photometry and those obtained from ionization balance, which suggests that non-LTE effects are important for these low-gravity, metal-poor stars. We adopt an iron abundance using photometric gravities and Fe ...

The Fourier phase parameter ¢31 has been determined for RRc stars in five globular clusters NGC 6171 !"I 5, M.3, M?3, an~ M15. The results. indicate that the RRc. s!ars in a.given cluster show a seq~ence of ¢3: In~reasIn~ wIth penod, and that the hIgher !he cluster metalhclty, the higher the sequence lies in a plot of ¢31 wIth penod. The ¢31 values for the stars In NGC 6171 and M5 presented her...

Variance and the Covariance José M. Merigó,1,2,3,∗ Montserrat Guillén,1 José M. Sarabia4 1Department of Econometrics, Riskcenter–IREA, University of Barcelona, Barcelona 08034, Spain 2Manchester Business School, University of Manchester, Manchester M15 6 PB, United Kingdom 3Department of Management Control and Information Systems, University of Chile, Santiago 8330015, Chile 4Department of Econ...

BV (RI)KC light curves are presented for 27 Type Ia supernovae discovered during the course of the Calán/Tololo Survey and for two other SNe Ia observed during the same period. Estimates of the maximum light magnitudes in the B, V , and I bands and the initial decline rate parameter ∆m15(B) are also given. Subject headings: photometry — supernovae

AIM To study the influence of redox environment of Escherichia coli (E. coli) cytoplasm on disulfide bond formation of recombinant proteins. METHODS Bovine fibroblast growth factor (BbFGF) was selected as a model of simple proteins with a single disulfide bond and free cysteines. Anti-HBsAg single-chain Fv (HBscFv), an artificial multidomain protein, was selected as the model molecule of comp...

© 2015 Wiley Periodicals, Inc. Published online in Wiley Online Library (wileyonlinelibrary.com). DOI:10.1002/hrm.21685 Correspondence to: Jill Rubery, University of Manchester, Manchester Business School, Booth Street West, Manchester M15 6PB UK, Phone: +44 1613063406, Fax: +44 161 3063552, E-mail: [email protected] “IT’S ALL ABOUT TIME”: TIME AS CONTESTED TERRAIN IN THE MANAGEMENT AND EXP...