193 datasets found

Obscured or narrow-line active galaxies offer an unobstructed view of the quasar environment in the presence of a luminous and vigorously accreting black hole (BH). We exploit...

We report the results from a deep Hubble Space Telescope (HST) NICMOS H-band imaging survey of 28 z<0.3 QSOs from the Palomar-Green (PG) sample. This program is part of QUEST...

We study the origin and properties of "extra" or "excess" central light in the surface brightness profiles of remnants of gas-rich mergers. By combining a large set of...

We study galaxies that host both nuclear star clusters and AGNs, implying the presence of a massive black hole. We select a sample of 176 galaxies with previously detected...

We built an optimal basis of low-resolution templates for galaxies over the wavelength range from 0.2 to 10um using a variant of the algorithm presented by Budavari and...

Combining resolved optical spectroscopy with panoramic HST imaging, we study the dynamical properties of spiral galaxies as a function of position across two...

We have measured the velocity of the Local Group with respect to an inertial frame defined by the 119 Abell and Abell, Corwin, & Olowin (ACO, Cat. ) clusters contained...

In this paper, we investigate radio properties of active galaxies taken from the reference Veron-Cetty & Veron (2010, Cat. VII/258) catalog. The galaxies are limited to...

We present a new formula for absolute magnitude determination for late-type dwarf stars as a function of (g-r) and (r-i) for Sloan photometry (as defined by Abazajian et al.,...

We used the database of 1040 short-period (1<=P<200days) exoplanets radial-velocity orbits to study the planetary eccentricity-period (PEP) distribution. We first divided...

We assemble a catalog of 15424 nearby galaxies within 50Mpc with consistent and homogenized mass, distance, and morphological type measurements. Our catalog combines galaxies...

We present a catalog of star clusters, associations, and related extended objects in the Small Magellanic Cloud (SMC) and the Magellanic Bridge with 2741 entries, a factor 2...

We have observed their cyanogen CN features at ~3800 and 4120{AA} as well as the CH band at ~4300{AA} for 145 evolved stars in the Galactic globular cluster M71 using the...

The next generation of giant-segmented mirror telescopes (>20m) will enable us to observe galactic nuclei at much higher angular resolution and sensitivity than ever before....

This paper presents a catalog of 312 X-ray selected BL Lacertae objects (XBLs), optically identified through the end of 2011. It contains the names from different surveys,...

It is an observational fact that bulges of spiral galaxies contain a high fraction of old and metal-rich stars. Following this observational fact, we have investigated the...

Phase curves of small bodies are useful tools to obtain their absolute magnitudes and phase coefficients. The former relates to the object's apparent brightness, while the...

RR Lyrae stars towards the Galactic bulge are used to investigate whether this old stellar population traces the Galactic bar. Although the bar is known to dominate the mass in...

In addition to being objects of intense interest for cosmology and studies of the evolution of the universe, quasars are used to define quasi-inertial positions on the celestial...

The formation process of fossil groups (FGs) is still under debate, and, due to the relative rarity of FGs, large samples of such objects are still missing. The aim of the...