Results 81 to 90 of about 451,370 (306)

Surface Brightness Plateau in S4G Galaxies

Galaxies, 2020
Using 3.6-μm data from 2112 galaxies, we show that, contrary to widely held expectations of a continuous steep decline, radial surface brightness profiles of galaxies tend to flatten and form extended plateaus beyond 27–28 magAB/arcsec2.
Alan Sipols, Alex Pavlovich
doaj   +1 more source

Logarithmic and Strong Coupling Models in Weyl‐Type f(Q,T)$f(Q,T)$ Gravity

Annalen der Physik, EarlyView.
This work explores Weyl‐type f(Q,T) gravity using recent observational datasets — CC, Pantheon+, Union 3.0, and DESI DR2. Through MCMC analysis of logarithmic and strong coupling models, the study reveals a transition from deceleration to acceleration, quintessence‐to‐phantom dynamics, and late‐time consistency with LCDM, offering a geometry‐driven ...
Rahul Bhagat, S. K. Tripathy, B. Mishra
wiley   +1 more source

Compact E+A Galaxies as a Progenitor of Massive Compact Quiescent Galaxies at 0.2

, 2016
We search the Sloan Digital Sky Survey and the Baryon Oscillation Sky Survey to identify ~5500 massive compact quiescent galaxy candidates at 0 ...
Chillingarian, Igor, Damjanov, Ivana, Geller, Margaret J., Hochmuth, Nicholas Baeza, Hwang, Ho Seong, Salmi, Fadia, Sohn, Jubee, Zahid, H. Jabran   +7 more
core   +1 more source

Usage of the term provenance in LIS literature: An Annual Review of Information Science and Technology (ARIST) paper

Journal of the Association for Information Science and Technology, EarlyView.
Abstract Provenance is the story of how something has come to be. In this paper, we provide a systematic literature review to categorize the various notions of provenance in Information Sciences. The goal of this review is to paint a broader picture of the multiple uses of provenance at play and to enhance our understanding of the importance of ...
Rhiannon Bettivia, Yi‐Yun Cheng, Michael R. Gryk   +2 more
wiley   +1 more source

Hot Stars, Young Stellar Populations and Dust with Swift/UVOT

Universe
In this review, we highlight the contributions made by the Swift/UVOT instrument to the understanding of the ultraviolet (UV) attenuation and extinction properties of interstellar dust and provide insight into hot stars and young stellar populations. The
Michael H. Siegel, Caryl Gronwall
doaj   +1 more source

Quantitative Morphology of Galaxies in the Hubble Deep Field [PDF]

, 1998
We measure quantitative structural parameters of galaxies in the Hubble Deep Field (HDF) on the drizzled F814W images. Our structural parameters are based on a two-component surface brightness made up of a S\'ersic profile and an exponential profile.
Abraham R. G., Cole S., de Vaucouleurs G., de Vaucouleurs G., de Vaucouleurs G., Doi M., Ellis R. S., Francine R. Marleau, Kauffmann G., Luc Simard, Michard R., Navarro J. F., Patterson F. S., Steinmetz M.   +13 more
core   +2 more sources

New Arabic Records From Cairo on Supernovae 1181 and 1006

Astronomische Nachrichten, EarlyView.
ABSTRACT The remnant of the historical supernova SN 1181 is under discussion: While the previously suggested G130.7+3.1 (3C58) appears too old (3000–5000 year), the unusual star IRAS00500+6713 with a surrounding nebula (Pa‐30) has an expansion age not inconsistent with a SN Iax explosion in ad 1181 under the assumption that neither acceleration nor ...
J. G. Fischer, H. Halm, R. Neuhäuser, D. L. Neuhäuser   +3 more
wiley   +1 more source

Cluster induced quenching of galaxies in the massive cluster XMMXCSJ2215.9-1738 at z~1.5 traced by enhanced metallicities inside half R200

, 2019
(Abridged) We explore the massive cluster XMMXCSJ2215.9-1738 at z~1.5 with KMOS spectroscopy of Halpha and [NII] covering a region that corresponds to about one virial radius.
Hayashi, M., Kodama, T., Maier, C., Ziegler, B. L.   +3 more
core   +1 more source

Multicolor photometry of the galaxies in the central region of Abell 2634 [PDF]

, 2001
An optical photometric observation with the BATC multicolor system is carried out for the central 56' x 56' region of the nearby cluster of galaxies, Abell 2634.
Arimoto N., Bolzonella M., Bower R. G., Griffen R. F., Hong Wu, Jiansheng Chen, Jin Zhu, Jun Ma, Lucey J. R., Lucey J. R., Qirong Yuan, Suijian Xue, Xu Zhou, Zhaoji Jiang   +13 more
core   +3 more sources

JWST Imaging of the Closest Globular Clusters—VI. The Lowest‐Mass Objects in M 4 and the Galactic Bulge

Astronomische Nachrichten, EarlyView.
ABSTRACT We present James Webb Space Telescope observations of M 4—the closest globular cluster—that probe the lower Main Sequence down to the hydrogen‐burning limit. The unveiled stellar sequence reaches much fainter luminosities than previously possible, revealing a few extremely red objects that are consistent with brown dwarfs as cool as Teff∼1000K$
L. R. Bedin, R. Gerasimov, A. Calamida, M. Libralato, M. Scalco, D. Nardiello, M. Griggio, D. Apai, J. Anderson, A. Bellini, A. Burgasser   +10 more
wiley   +1 more source