نتایج جستجو برای: bulge zone

تعداد نتایج: 116077  

2001
David Merritt Laura Ferrarese

We analyze a sample of 32 galaxies for which a dynamical estimate of the mass of the hot stellar component, M bulge , is available. For each of these galaxies, we calculate the mass of the central black hole, M • , using the tight empirical correlation between M • and the bulge stellar velocity dispersion. The frequency function N [log(M • /M bulge)] is reasonably well described as a Gaussian w...

2000
Habib G. Khosroshahi Yogesh Wadadekar Ajit Kembhavi

Using a two-dimensional galaxy image decomposition technique, we extract global bulge and disk parameters for a complete sample of early type disk galaxies in the near infrared K band. We find significant correlation of the bulge parameter n with the central bulge surface brightness μb(0) and with effective radius re. Using bivariate analysis techniques, we find that logn, log re and μb(0) are ...

2002
Konrad Kuijken

We report proper motion dispersions for stars in the direction of two fields of the Galactic bulge, using HST/WFPC2 images taken six years apart. Our two fields are Baade’s Window (l, b) = (1.13◦,−3.77◦) and Sgr I (l, b) = (1.25◦,−2.65◦). Our proper motion dispersions are in good agreement with prior groundand space-based proper motion studies in bulge fields, but in contrast to some prior stud...

Abdoljalil Kalantar Hormozi, Seyed Reza Rafei,

Rhinoplasty is one of the most common aesthetic procedures in the world. It is the most common aesthetic surgery procedure in Iran. Achieving complete patient satisfaction is almost impossible but improving the aesthetics and function of the nose is the aim of surgery. This report describes a 34 years old woman with a large bump in the tip of the nose after three times cosmetic rhinoplasties. T...

Journal: :Biophysical journal 2000
J Sarzynska T Kulinski L Nilsson

Molecular modeling and molecular dynamics have been employed to study the conformation and flexibility of a 15-nucleotide fragment of the plant 5S rRNA containing loop D and a single uridine bulge. Two different model built initial structures were used: one with the bulge localized inside the helical stem and another with the bulge pointing out from the helix. Several independent 700-ps-long tr...

Journal: :Aging cell 2009
Laure Rittié Stefan W Stoll Sewon Kang John J Voorhees Gary J Fisher

Skin hair follicles (HF) contain bulge stem cells (SC) that regenerate HFs during hair cycles, and repair skin epithelia following injury. As natural aging is associated with decreased skin repair capacity in humans, we have investigated the impact of age on human scalp HF bulge cell number and function. Here, we isolated human bulge cells, characterized as CD200+/KRT15+/KRT19+ cells of the HF,...

2014
N.-H. Chan

True polar wander (TPW), a reorientation of the rotation axis relative to the solid body, is driven by mass redistribution on the surface or within the planet and is stabilized by two aspects of the planet’s viscoelastic response: the delayed viscous readjustment of the rotational bulge and the elastic stresses in the lithosphere. The latter, following Willemann (1984), is known as remnant bulg...

2000
David Merritt Laura Ferrarese

We analyze a sample of 32 galaxies for which a dynamical estimate of the mass of the hot stellar component, M bulge , is available. For each of these galaxies, we calculate the mass of the central black hole, M • , using the tight empirical correlation between M • and the bulge stellar velocity dispersion. The frequency function N [log(M • /M bulge)] is reasonably well described as a Gaussian w...

2000
David Merritt Laura Ferrarese

We analyze a sample of 32 galaxies for which a dynamical estimate of the mass of the hot stellar component, M bulge , is available. For each of these galaxies, we calculate the mass of the central black hole, M • , using the tight empirical correlation between M • and the bulge stellar velocity dispersion. The frequency function N [log(M • /M bulge)] is reasonably well described as a Gaussian w...

1998
Rychard Bouwens

In this paper, we present three qualitatively different scenarios for bulge formation: a secular evolution model in which bulges form after disks and undergo several central starbursts, a primordial collapse model in which bulges and disks form simultaneously, and an early bulge formation model in which bulges form prior to disks. We normalize our models to the local z = 0 observations of de Jo...

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