Results 41 to 50 of about 2,833,165 (330)

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

K-band versus I-band Surface Brightness Fluctuations as distance indicators [PDF]

, 2001
We evaluate the method of optical and infrared Surface Brightness Fluctuations (SBF) as a distance indicator and its application on 8-m class telescopes, such as the Very Large Telescope (VLT).
Ajhar, Bertin, Blakeslee, Blakeslee, Bruzual, Buzzoni, Charlot, Cowie, D. R. Silva, Elston, Feast, Ferrarese, Fluks, Freedman, Freedman, Grillmair, Gunn, Harris, Jensen, Jensen, Jensen, Kauffmann, Lauer, Lejeune, Liu, Luppino, Mei, Mei, P. J. Quinn, Pahre, Pahre, Persson, S. Mei, Silva, Smail, Sodemann, Sodemann, Thomsen, Tonry, Tonry, Tonry, Tonry, Tonry, Worthey, Worthey   +44 more
core   +2 more sources

Stellar Streams Discovered in the Dark Energy Survey [PDF]

Astrophysical Journal, 2018
We perform a search for stellar streams around the Milky Way using the first 3 yr of multiband optical imaging data from the Dark Energy Survey (DES).
N. Shipp, A. Drlica-Wagner, E. Balbinot, P. Ferguson, D. Erkal, D. Erkal, Ting S. Li, K. Bechtol, V. Belokurov, B. Buncher, D. Carollo, M. Kind, M. Kind, K. Kuehn, J. Marshall, A. Pace, E. Rykoff, E. Rykoff, I. Sevilla-Noarbe, E. Sheldon, L. Strigari, A. K. Vivas, B. Yanny, A. Zenteno, T. Abbott, F. Abdalla, F. Abdalla, S. Allam, S. Ávila, S. Ávila, E. Bertin, D. Brooks, D. Burke, D. Burke, J. Carretero, F. Castander, R. Cawthon, M. Crocce, C. Cunha, C. D'Andrea, L. Costa, C. Davis, J. Vicente, S. Desai, H. Diehl, P. Doel, A. Evrard, B. Flaugher, P. Fosalba, J. Frieman, J. Frieman, J. García-Bellido, E. Gaztañaga, D. Gerdes, D. Gruen, D. Gruen, R. Gruendl, R. Gruendl, J. Gschwend, G. Gutiérrez, W. Hartley, W. Hartley, K. Honscheid, B. Hoyle, B. Hoyle, D. James, M. Johnson, E. Krause, E. Krause, N. Kuropatkin, O. Lahav, Huan Lin, M. Maia, M. March, P. Martini, F. Menanteau, F. Menanteau, C. Miller, R. Miquel, R. Nichol, A. Plazas, A. Romer, M. Sako, E. Sánchez, B. Santiago, V. Scarpine, R. Schindler, M. Schubnell, M. Smith, Robert C. Smith, F. Sobreira, E. Suchyta, M. Swanson, G. Tarlé, D. Thomas, D. Tucker, A. Walker, Risa Wechsler, Risa Wechsler   +98 more
semanticscholar   +1 more source

Distances to Nearby Molecular Clouds Traced by Young Stars

The Astrophysical Journal Supplement Series, 2023
I present a catalog of distances to 63 molecular clouds located within ∼2.5 kpc of the Sun. The cloud distances are derived based on utilizing the Gaia DR3 parallaxes of the young stellar objects (YSOs). By identifying AllWISE YSO candidates (YSOCs) with
Miaomiao Zhang
doaj   +1 more source

RR Lyrae and Type II Cepheid Variables in Globular Clusters: Optical and Infrared Properties

Universe, 2022
Globular clusters are both primary fossils of galactic evolution and formation and are ideal laboratories for constraining the evolution of low-mass and metal-poor stars.
Anupam Bhardwaj
doaj   +1 more source

Stellar Distances and Hipparcos [PDF]

International Astronomical Union Colloquium, 1993
AbstractHipparcos, the astrometric satellite of the European Space Agency, launched in August 1989, will provide absolute trigonometric parallaxes for about 100 000 stars brighter than the limiting V-magnitude 12.5. In spite of the difficulties caused by a faulty orbit, the mission is successfully going on.
openaire   +1 more source

THREE-DIMENSIONAL STELLAR KINEMATICS AT THE GALACTIC CENTER: MEASURING THE NUCLEAR STAR CLUSTER SPATIAL DENSITY PROFILE, BLACK HOLE MASS, AND DISTANCE [PDF]

, 2013
We present three-dimensional (3D) kinematic observations of stars within the central 0.5 pc of the Milky Way (MW) nuclear star cluster (NSC) using adaptive optics imaging and spectroscopy from the Keck telescopes.
T. Do, G. Martinez, S. Yelda, A. Ghez, J. Bullock, M. Kaplinghat, J. Lu, A. M. G. D. Institute, U. Toronto, U. California, Irvine, T. Center, D. Physics, S. University, Ucla, Institute for Astronomy, U. Hawaii, Center for Particle Cosmology, Astro-particle Physics, O. University, D. O. Astronomy   +20 more
semanticscholar   +1 more source

Resolving the Metallicity Distribution of the Stellar Halo with the H3 Survey [PDF]

Astrophysical Journal, 2019
The Galactic stellar halo is predicted to have formed at least partially from the tidal disruption of accreted dwarf galaxies. This assembly history should be detectable in the orbital and chemical properties of stars.
C. Conroy, R. Naidu, D. Zaritsky, A. Bonaca, P. Cargile, Benjamin D. Johnson, N. Caldwell   +6 more
semanticscholar   +1 more source

The Impact of Hot Jupiters on the Spin-down of their Host Stars [PDF]

, 2010
We present a numerical Magnetohydrodynamic (MHD) study of the dependence of stellar mass and angular momentum- loss rates on the orbital distance to close-in giant planets.
Cohen, Cohen, Cohen, Hartman, Kashyap, Mardling, Mayor, Shkolnik, Shkolnik, Shkolnik, Shkolnik, Sánchez-Lavega   +11 more
core   +1 more source

The distance to the Fornax Dwarf Spheroidal Galaxy [PDF]

, 2007
A large multicolour, wide-field photometric database of the Fornax dwarf spheroidal galaxy has been analysed using three different methods to provide revised distance estimates based on stellar populations in different age intervals.
Aaronson, Aaronson, Azzopardi, Battaglia, Bellazzini, Bellazzini, Bersier, Bersier, Buonanno, Buonanno, Cacciari, Carretta, Carretta, Cole, Da Costa, Demers, E. V. Held, Ferraro, Ferraro, Girardi, Girardi, Greco, Greco, Gullieuszik, I. Saviane, L. Rizzi, Landolt, Lee, M. Gullieuszik, Makarov, Méndez, Paczynski, Pietrzyński, Pietrzyński, Pont, R. B. Tully, Rizzi, Rizzi, Rocha-Pinto, Rocha-Pinto, Sakai, Saviane, Schlegel, Stanek, Stetson, Stetson, Stone, Tolstoy, Tolstoy, Udalski, Udalski, Udalski, Udalski, Udalski, Valdes, Zinn   +55 more
core   +1 more source