Results 21 to 30 of about 3,870 (308)

XMM-Newton X-ray study of early type stars in the Carina OB1 association [PDF]

, 2007
<p><b>Aims:</b> X-ray properties of the stellar population in the Carina OB1 association are examined with special emphasis on early-type stars.
I. I. Antokhin, J. C. Brown, Rauw, G., G. Rauw, J.-M. Vreux, Antokhin, I. I., Antokhin, I.I., Brown, J.C., van der Hucht, K.A., Rauw, Grégor, K. A. van der Hucht, Vreux, Jean-Marie, Vreux, J.M., van der Hucht, K. A., Brown, J. C.   +14 more
core   +1 more source

MeerKAT radio observations of the neutron star low-mass X-ray binary Cen X-4 at low accretion rates [PDF]

, 2022
Centaurus X-4 (Cen X-4) is a relatively nearby neutron star low-mass X-ray binary that showed outbursts in 1969 and 1979, but has not shown a full outburst since.
Carotenuto, F., Miller-Jones, J. C. A., Russell, T. D., Saikia, P., Sivakoff, G. R., Eijnden, J. van den, Fender, R.   +6 more
core   +2 more sources

Atmospheres of brown dwarfs [PDF]

, 2014
ChH highlights financial support of the European Community under the FP7 by an ERC starting grant. SLC acknowledges financial support of University of LeicesterBrown Dwarfs are the coolest class of stellar objects known to date. Our present perception is
Casewell, Sarah, Helling, Christiane
core   +1 more source

Magnetic Inclination Evolution of Accreting Neutron Stars in Intermediate/Low-mass X-Ray Binaries

The Astrophysical Journal, 2023
The magnetic inclination angle χ , namely the angle between the spin and magnetic axes of a neutron star, plays a vital role in its observational characteristics. However, there are few systematic investigations of its long-term evolution, especially for
Hao-ran Yang, Xiang-dong Li
doaj   +1 more source

NICER Observations of Thermonuclear Bursts from 4U 1728-34: Detection of Oscillations prior to the Onset of Two Bursts

The Astrophysical Journal, 2023
We present temporal and time-resolved spectral analyses of all the thermonuclear X-ray bursts observed from the neutron star low-mass X-ray binary 4U 1728−34 with NICER from 2017 June to 2019 September.
Z. Funda Bostancı, Tuğba Boztepe, Tolga Güver, Tod E. Strohmayer, Yuri Cavecchi, Ersin Göğüş, Diego Altamirano, Peter Bult, Deepto Chakrabarty, Sebastien Guillot, Gaurava K. Jaisawal, Christian Malacaria, Giulio C. Mancuso, Andrea Sanna, Jean H. Swank   +14 more
doaj   +1 more source

X-rays from quiescent low-mass X-ray binary transients [PDF]

, 2000
International audienceI argue that it is very unlikely that X- rays from quiescent black-hole low-mass X-ray binary transients are emitted by coronae of companion stars.
Lasota, J. -P.
core   +1 more source

TOI 694b and TIC 220568520b: Two Low-mass Companions near the Hydrogen-burning Mass Limit Orbiting Sun-like Stars [PDF]

, 2020
We report the discovery of TOI 694 b and TIC 220568520 b, two low-mass stellar companions in eccentric orbits around metal-rich Sun-like stars, first detected by the Transiting Exoplanet Survey Satellite (TESS).
Flowers, Erin, Winn, Joshua N., Henning, Thomas, Dos Santos, Leonardo A., Rose, Mark E., Mann, Andrew W., Zhou, George, James, Hodari-Sadiki, Nielsen, Louise, Jenkins, Jon M., Grieves, Nolan, Furesz, Gabor, Latham, David W., Wallace, Alexander, Zhan, Zhuchang, Quintana, Elisa V., Vezie, Michael, Tenenbaum, Peter, Huang, Chelsea X., Yahalomi, Daniel A., Seager, Sara, Shporer, Avi, Sarkis, Paula, Ziegler, Carl, Law, Nicholas, Butler, R. Paul, Ireland, Michael, Henry, Todd J., Stassun, Keivan G., Ricker, George R., Brahm, Rafael, Mireles, Ismael, Gunther, Maximilian N., Yu, Liang, Vanderspek, Roland, Hesse, Katharine, Smith, Jeffrey C., Jao, Wei-Chun, Rodriguez, Joseph E., Udry, Stephane, Bouchy, Francois, Jordan, Andres, Paredes, Leonardo A.   +42 more
core   +1 more source

Compact Stars in low-mass X-ray binaries

, 2014
We propose a model for compact stars in low-mass X-ray binaries(LMXBs) namely KS 1731-260, EXO 1745-248 and 4U 1608-52. Here we investigate the physical phenomena of a compact star in the LMXBs. Using our model, we have calculated central density, surface density, mass(M) and red-shift for the above mentioned compact stars, which is very much ...
Hossein, Sk. Monowar, Molla, Sajahan, Jafry, Md. Abdul Kayum, Kalam, Mehedi   +3 more
openaire   +2 more sources

The radial velocity of the companion star in the low-mass X-ray binary 2S 0921-630 : limits on the mass of the compact object [PDF]

, 2005
In this paper we report on optical spectroscopic observations of the low-mass X-ray binary 2S 0921–630 obtained with the Very Large Telescope. We found sinusoidal radial velocity variations of the companion star with a semi-amplitude of 99.1 ± 3.1 km s−1
van der Klis, M., Nelemans, G., Steeghs, D., Nelemans, G.A., Jonker, P. G., Jonker, P.G.   +5 more
core   +1 more source

Accreting Neutron Stars in Low-Mass X-Ray Binary Systems [PDF]

, 2008
22 pages, 7 figures, updated list of sources and references, to appear in "Short-period Binary Stars: Observation, Analyses, and Results", eds. E.F. Milone, D.A. Leahy, and D. Hobill (Dordrecht: Springer, http://www.springerlink.com)
Lamb, Frederick K., Boutloukos, Stratos
openaire   +2 more sources