Results 1 to 10 of about 1,379 (186)

Col-OSSOS: Evidence for a Compositional Gradient Inherited from the Protoplanetary Disk?

The Planetary Science Journal, 2023
In the present-day Kuiper Belt, the number of compositional classes and the orbital distributions of these classes hold important cosmogonic implications for the solar system.
Michaël Marsset, Wesley C. Fraser, Megan E. Schwamb, Laura E. Buchanan, Rosemary E. Pike, Kathryn Volk, Nuno Peixinho, Susan Benecchi, Michele T. Bannister, Nicole J. Tan, J. J. Kavelaars   +10 more
doaj   +1 more source

Six Outbursts of Comet 46P/Wirtanen

The Planetary Science Journal, 2021
Cometary activity is a manifestation of sublimation-driven processes at the surface of nuclei. However, cometary outbursts may arise from other processes that are not necessarily driven by volatiles.
Michael S. P. Kelley, Tony L. Farnham, Jian-Yang Li, Dennis Bodewits, Colin Snodgrass, Johannes Allen, —, Eric C. Bellm, Michael W. Coughlin, Andrew J. Drake, Dmitry A. Duev, Matthew J. Graham, Thomas Kupfer, Frank J. Masci, Dan Reiley, Richard Walters, Zwicky Transient Facility Collaboration, M. Dominik, U. G. Jørgensen, A. E. Andrews, N. Bach-Møller, V. Bozza, M. J. Burgdorf, J. Campbell-White, S. Dib, Y. I. Fujii, T. C. Hinse, M. Hundertmark, E. Khalouei, P. Longa-Peña, M. Rabus, S. Rahvar, S. Sajadian, J. Skottfelt, J. Southworth, J. Tregloan-Reed, E. Unda-Sanzana, MiNDSTEp Collaboration   +37 more
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Exploring the Structures and Substructures of the Andromeda Satellite Dwarf Galaxies Cassiopeia III, Perseus I, and Lacerta I

The Astronomical Journal, 2023
We present results from wide-field imaging of the resolved stellar populations of the dwarf spheroidal galaxies Cassiopeia III (And XXXII) and Perseus I (And XXXIII), two satellites in the outer stellar halo of the Andromeda galaxy (M31).
Katherine L. Rhode, Nicholas J. Smith, Denija Crnojevic, David J. Sand, Ryan A. Lambert, Enrico Vesperini, Madison V. Smith, Steven Janowiecki, John J. Salzer, Ananthan Karunakaran, Kristine Spekkens   +10 more
doaj   +1 more source

Discovery of a New Local Group Dwarf Galaxy Candidate in UNIONS: Boötes V

The Astronomical Journal, 2023
We present the discovery of Boötes V, a new ultra-faint dwarf galaxy (UFD) candidate. This satellite is detected as a resolved overdensity of stars during an ongoing search for new Local Group dwarf galaxy candidates in the UNIONS photometric data set ...
Simon E. T. Smith, Jaclyn Jensen, Joel Roediger, Federico Sestito, Christian R. Hayes, Alan W. McConnachie, Jean-Charles Cuillandre, Stephen Gwyn, Eugene Magnier, Ken Chambers, Francois Hammer, Mike J. Hudson, Nicolas Martin, Julio Navarro, Douglas Scott   +14 more
doaj   +1 more source

Overview of Gaia Multi-Color Photometry

Open Astronomy, 2003
Gaia will obtain multi-color photometry for astrometric and astrophysical purposes. A photometry in five broad bands and with high angular resolution will be obtained after every astrometric observation of a star, especially for the sake of correcting ...
Høg Erik
doaj   +1 more source

PHOTOMETRIC OBSERVATIONS OF THE R AQUARII SYSTEM

Odessa Astronomical Publications, 2017
Photometric BVRIJHK observations of the symbiotic star R Aqr are presented. The data were obtained at Byurakan Station of the St.Petersburg University Astronomical Observatory during the interval 1971- 1991, using AFM-6 photometer (C-8 type photocatode ...
T. N. Khudyakova
doaj   +1 more source

Empirical 2MASS–WFC3/IR Filter Transformations Across the H-R Diagram from Synthetic Photometry

The Astronomical Journal, 2023
Near-infrared bandpasses on spaceborne observatories diverge from their ground-based counterparts as they are free of atmospheric telluric absorption.
M. J. Durbin, R. L. Beaton, A. J. Monson, B. Swidler, J. J. Dalcanton   +4 more
doaj   +1 more source

DESI z ≳ 5 Quasar Survey. I. A First Sample of 400 New Quasars at z ∼ 4.7–6.6

The Astrophysical Journal Supplement Series, 2023
We report the first results of a high-redshift ( z ≳ 5) quasar survey using the Dark Energy Spectroscopic Instrument (DESI). As a DESI secondary target program, this survey is designed to carry out a systematic search and investigation of quasars at 4.8 <
Jinyi Yang, Xiaohui Fan, Ansh Gupta, Adam D. Myers, Nathalie Palanque-Delabrouille, Feige Wang, Christophe Yèche, Jessica Nicole Aguilar, Steven Ahlen, David M. Alexander, David Brooks, Kyle Dawson, Axel de la Macorra, Arjun Dey, Govinda Dhungana, Kevin Fanning, Andreu Font-Ribera, Satya Gontcho, Julien Guy, Klaus Honscheid, Stephanie Juneau, Theodore Kisner, Anthony Kremin, Laurent Le Guillou, Michael Levi, Christophe Magneville, Paul Martini, Aaron Meisner, Ramon Miquel, John Moustakas, Jundan Nie, Will Percival, Claire Poppett, Francisco Prada, Edward Schlafly, Gregory Tarlé, Mariana Vargas Magana, Benjamin Alan Weaver, Risa Wechsler, Rongpu Zhou, Zhimin Zhou, Hu Zou   +41 more
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Photometry and Multipolar Magnetic Field Modeling of Polars: BY Camelopardalis and FL Ceti

Acta Polytechnica CTU Proceedings, 2015
We present new broad band optical photometry of two magnetic cataclysmic variable stars, the asynchronous polar BY Camelopardalis and the short period polar FL Ceti.
P. A. Mason, A. G. Zhilkin, D. V. Bisikalo, S. Gomez, J. Morales, E. L. Robinson   +5 more
doaj   +1 more source

Blanco DECam Bulge Survey (BDBS). VI. Extinction Maps Toward Southern Galactic Bulge Globular Clusters

The Astrophysical Journal, 2023
We present wide-field, high resolution maps of the color excess for 14 globular clusters toward the Southern Galactic bulge. The maps were derived using Gaia EDR3 astrometry and stellar photometry from the Blanco DECam Bulge Survey, which is a deep, wide-
Justin A. Kader, Catherine A. Pilachowski, Christian I. Johnson, R. Michael Rich, Michael D. Young, Iulia T. Simion, William I. Clarkson, Scott Michael, Andrea Kunder, Anna Katherina Vivas, Andreas J. Koch-Hansen, Tommaso Marchetti   +11 more
doaj   +1 more source