Results 81 to 90 of about 574,458 (198)

Geometrical beaming of stellar mass ULXs [PDF]

Monthly Notices of the Royal Astronomical Society: Letters, 2016
Abstract The presence or lack of eclipses in the X-ray light curves of ultraluminous X-ray sources (ULXs) can be directly linked to the accreting system geometry. In the case where the compact object is stellar mass and radiates isotropically, we should expect eclipses by a main-sequence to sub-giant secondary star on the recurrence time-
Matthew J. Middleton, Andrew J. King, Andrew J. King, Andrew J. King   +3 more
openaire   +4 more sources

Photometric Objects Around Cosmic Webs (PAC) Delineated in a Spectroscopic Survey. IV. High-precision Constraints on the Evolution of the Stellar–Halo Mass Relation at Redshift z < 0.7

The Astrophysical Journal, 2023
Taking advantage of the Photometric objects Around Cosmic webs method developed in Paper I, we measure the excess surface density ${\bar{n}}_{2}{w}_{{\rm{p}}}$ of the photometric objects around spectroscopic objects down to stellar masses 10 ^8.0 M _ ...
Kun Xu, Y. P. Jing, Yun Zheng, Hongyu Gao   +3 more
doaj   +1 more source

Galaxy And Mass Assembly (GAMA) : stellar mass functions by Hubble type [PDF]

, 2014
This work was supported by the Austrian Science Foundation FWF under grant P23946. AWG was supported under the Australian Research Council's funding scheme FT110100263.We present an estimate of the galaxy stellar mass function and its division by ...
Alpaslan, Mehmet, Baldry, Ivan, Bamford, Steven P., Bauer, Amanda E., Bland-Hawthorn, Joss, Brown, Michael J. I., Colless, Matthew, Conselice, Christopher J., Driver, Simon P., Graham, Alister W., Holwerda, Benne W., Hopkins, Andrew M., Kelvin, Lee S., Lara-Lopez, Maritza A., Liske, Jochen, Lopez-Sanchez, Angel R., Loveday, Jon, Norberg, Peder, Phillipps, Steven, Popescu, Cristina C., Prescott, Matthew, Robotham, Aaron S. G., Sansom, Anne E., Taylor, Edward N., Tuffs, Richard J.   +24 more
core   +4 more sources

Does God play dice with star clusters?

The Open Journal of Astrophysics, 2023
When a detailed model of a stellar population is unavailable, it is most common to assume that stellar masses are independently and identically distributed according to some distribution: the universal initial mass function (IMF). However, stellar masses
Michael Y. Grudic, Stella S. R. Offner, Dávid Guszejnov, Claude-André Faucher-Giguère, Philip F. Hopkins   +4 more
doaj   +1 more source

Precise Stellar Mass and Mass-Luminosity Data [PDF]

Symposium - International Astronomical Union, 1997
Recent progress in observing and data reduction methods for precise mass and mass-luminosity determinations in binary systems are briefly reviewed. The foundations appear to have been laid for a new burst of accurate data. Detailed model simulations of the individual systems are the best way to use these data to critically test the theoretical models ...
openaire   +2 more sources

Low-Mass and Sub-stellar Eclipsing Binaries in Stellar Clusters [PDF]

, 2020
30 pages, 5 figures, no table.
Nicolas Lodieu, Nicolas Lodieu, Ernst Paunzen, Miloslav Zejda   +3 more
openaire   +3 more sources

The Observed Relation between Stellar Mass, Dust Extinction and Star Formation Rate in Local Galaxies [PDF]

, 2012
In this study we investigate the relation between stellar mass, dust extinction and star formation rate (SFR) using ~150,000 star-forming galaxies from the SDSS DR7. We show that the relation between dust extinction and SFR changes with stellar mass. For galaxies at the same stellar mass dust extinction is anti-correlated with the SFR at stellar masses
arxiv   +1 more source

Ly Halo Properties and Dust in the Circumgalactic Medium of z ∼ 2 Star-forming Galaxies

The Astrophysical Journal
We present Keck Cosmic Web Imager integral-field unit observations around extended Ly α halos of 27 typical star-forming galaxies with redshifts 2.0 < z < 3.2 drawn from the MOSFIRE Deep Evolution Field survey.
Zhiyuan Song, Naveen A. Reddy, Yuguang Chen, Alice E. Shapley, Saeed Rezaee, Andrew Weldon, Tara Fetherolf, Alison L. Coil, Bahram Mobasher, Charles C. Steidel   +9 more
doaj   +1 more source

Stellar populations of ultraluminous infrared galaxies

, 2011
Ultraluminous infrared galaxies (ULIRGs) have several types according to dominance of starburst or AGN component. We made stellar population analysis for a sample of 160 ULIRGs to study the evolution of ULIRGs. We found that the dominance of intermediate-
Abazajian, Alongi, Balogh, Blanton, Bressan, Canalizo, Canalizo, Canalizo, Chung, Cid Fernandes, Colina, Dasyra, Downes, Fagotto, Genzel, Hopkins, Hou, J. L. Han, L. G. Hou, Lonsdale, M. Z. Kong, Meng, Moshir, Natali, Netzer, Salim, Schmitt, Schweitzer, Solomon, Soto, Springel, Surace, Surace, Surace, Tacconi, Veilleux, Veilleux, Xue-Bing Wu   +37 more
core   +1 more source