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Residual-gas expulsion after cluster formation has recently been shown to leave an imprint in the low-mass present-day stellar mass function (PDMF) which allowed the estimation of birth conditions of some Galactic globular clusters (GCs)…

Astrophysics of Galaxies · Physics 2015-06-04 Michael Marks , Pavel Kroupa , Jörg Dabringhausen , Marcel S. Pawlowski

We present a study of the M83 cluster population, covering the disc of the galaxy between radii of 0.45 and 4.5 kpc. We aim to probe the properties of the cluster population as a function of distance from the galactic centre. We observe a…

Astrophysics of Galaxies · Physics 2015-07-15 Angela Adamo , Diederik Kruijssen , Nate Bastian , Esteban Silva-Villa , Jenna Ryon

Schmidt's method for construction of luminosity function of galaxies is generalized by taking into account the dependence of density of galaxies from the distance in the near Universe. The logarithmical luminosity function (LLF) of field…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 A. P. Mahtessian

Young massive clusters (YMCs) are usually accompanied by lower-mass clusters and unbound stars with a total mass equal to several tens times the mass of the YMC. If this was also true when globular clusters (GCs) formed, then their cosmic…

Astrophysics of Galaxies · Physics 2018-12-26 Bruce G. Elmegreen

The present paper presents a tabulation of data on all 600 Galactic open clusters for which it is presently possible to calculate linear diameters. As expected, the youngest `clusters' with ages < 15 Myr, contain a significant (greater than…

Astrophysics · Physics 2008-11-26 Sidney van den Bergh

We report new estimates for the lower mass function of 5 young open clusters spanning an age range from 80 to 150 Myr. In all studied clusters, the mass function across the stellar/substellar boundary (~0.072 Mo) and up to 0.4 Mo is…

Astrophysics · Physics 2007-05-23 J. Bouvier , E. Moraux , J. R. Stauffer , D. Barrado y Navascues , J. -C. Cuillandre

We here present the luminosity function (LF) of globular clusters (GCs) in five nearby spiral galaxies using the samples of GC candidates selected in Hubble Space Telescope mosaic images in F435W, F555W and F814W filters. Our search, which…

Astrophysics of Galaxies · Physics 2021-10-20 Luis Lomelí-Núñez , Y. D. Mayya , L. H. Rodríguez-Merino , P. A. Ovando , D. Rosa-González

The galaxy Luminosity Function (LF) has been estimated in the rest frame B luminosity at 0<z<1.25 and at 1700 {\AA} for 2.5<z<4.5 from deep multicolor surveys in the HDF-N, HDF-S, NTT-DF. The results have been compared with a recent version…

Astrophysics · Physics 2009-11-06 F. Poli , N. Menci , E. Giallongo , A. Fontana , S. Cristiani , S. D' Odorico

We test whether the masses of old globular clusters (GCs) in dwarf galaxies are consistent with the same initial mass spectrum as young massive clusters (YMCs) in nearby star-forming galaxies. The most massive GCs of dwarf galaxies are…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 J. M. Diederik Kruijssen , Andrew P. Cooper

We study the formation of globular clusters (GCs) in a Milky Way-size galaxy using a high-resolution cosmological simulation. The clusters in our model form in the dense cores of supergiant molecular clouds in the gaseous disks of…

Astrophysics · Physics 2008-11-26 Andrey V. Kravtsov , Oleg Y. Gnedin

We measure the volume luminosity density and surface luminosity density generated by the Galactic disc, using accurate data on the local luminosity function and the disc's vertical structure. From the well measured volume mass density and…

Astrophysics · Physics 2009-11-11 Chris Flynn , Johan Holmberg , Laura Portinari , Burkhard Fuchs , Hartmut Jahreiss

Stars do not form continuously distributed over star forming galaxies. They form in star clusters of different masses. This nature of clustered star formation is taken into account in the theory of the integrated galactic stellar initial…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-20 Jan Pflamm-Altenburg , Pavel Kroupa

Observations of young star clusters reveal that the high-mass end of the cluster initial mass function (CIMF) deviates from a pure power-law and instead truncates exponentially. We investigate the effects of this truncation on the formation…

Astrophysics of Galaxies · Physics 2019-03-27 Nick Choksi , Oleg Y. Gnedin

If all stars form in clusters and both the stars and the clusters follow a power law distribution which favours the creation of low mass objects, then the numerous low mass clusters will be deficient in high mass stars. Therefore, the mass…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 M. R. Haas , P. Anders

With targeted imaging of groups in the local volume, the regions of collapse around bright galaxies can be clearly identified by the distribution of dwarfs and luminosity functions can be established to very faint levels. In the case of the…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 R. Brent Tully

Initial conditions for star formation in clusters are estimated for protostars whose masses follow the initial mass function (IMF) from 0.05 to 10 solar masses. Star-forming infall is assumed equally likely to stop at any moment, due to gas…

Astrophysics of Galaxies · Physics 2015-05-18 Philip C. Myers

We present the optical and near-infrared luminosity and mass functions of the local star-forming galaxies in the Universidad Complutense de Madrid Survey. A bivariate method which explicitly deals with the Halpha selection of the survey is…

We present measurements of the luminosity and mass functions of low-mass stars constructed from a catalog of matched Sloan Digital Sky Survey (SDSS) and 2 Micron All Sky Survey (2MASS) detections. This photometric catalog contains more than…

We present optical photometric and polarimetric observations of stars towards NGC 1931 with the aim to derive the cluster parameters such as distance, reddening, age and luminosity/mass function as well as to understand the dust properties…

Solar and Stellar Astrophysics · Physics 2015-06-12 A. K. Pandey , C. Eswaraiah , Saurabh Sharma , M. R. Samal , N. Chauhan , W. P. Chen , J. Jose , D. K. Ojha , Ram Kesh Yadav , H. C. Chandola

From R-band images of 39 Hickson compact groups (HCGs), we use galaxy counts to determine a luminosity function extending to M_R=-14.0, approximately two magnitudes deeper than previous compact group luminosity functions. We find that a…

Astrophysics · Physics 2009-10-30 Sally D. Hunsberger , Jane C. Charlton , Dennis Zaritsky