Results 81 to 90 of about 29,479 (190)

Formation Process of the Young Stellar Population in Messier 16 from a Kinematic Perspective

The Astronomical Journal
We present a kinematic study of young stars in Messier 16 (M16) using the Gaia Data Release 3 and high-resolution spectra. A total of 345 stars are selected as genuine members using the published lists of X-ray sources, infrared sources, and early-type ...
Beomdu Lim, Hyeong-Sik Yun, Hyun-Jeong Kim, Yuna Lee, Jae-Rim Koo, Jongsuk Hong, Heeyoung Oh   +6 more
doaj   +1 more source

A Disk Galaxy of Old Stars at z ~ 2.5

, 2003
We describe observations of a galaxy in the field of the $z=2.483$ radio galaxy 4C 23.56, photometrically selected to have a spectral-energy distribution consistent with an old stellar population at the redshift of the radio galaxy.
Alan Stockton, Bolzonella M., Bower R. G., Caon N., Daddi E., Gabriela Canalizo, Iye M., Miyazaki M., Moriando G., Motohara K., Navarro J. F., Thomas D., Toshinori Maihara   +12 more
core   +1 more source

First detection of apple proliferation and pear decline phytoplasmas in Luxembourg

EPPO Bulletin, Volume 55, Issue 2, Page 320-327, August 2025.
Abstract The present article reports the first detection of the apple proliferation and pear decline phytoplasmas (‘Candidatus Phytoplasma mali’ and ‘Ca. P. pyri’, respectively) in Luxembourg. These phytoplasmas, belonging to the 'Apple Proliferation group' 16SrX, are causing severe losses in European fruit tree production, respectively, on apple ...
Alexander Weigand, Carmelo Rapisarda, Imen Kharrat‐Jarboui, Matteo Ripamonti   +3 more
wiley   +1 more source

Extinction of Taurus, Orion, Perseus and California Molecular Clouds Based on the LAMOST, 2MASS, and Gaia Surveys. II. The Extinction Law

The Astronomical Journal
The extinction law from ultraviolet (UV) to infrared (IR; 0.2–24 μ m) is determined by relying on the blue-edge method and color-excess ratios for some nearby molecular clouds, from the low-mass star-forming region to the massive star-forming region. The
ZheTai Cao, Biwei Jiang, Shu Wang, Jun Li   +3 more
doaj   +1 more source

The Star Formation Region NGC 6530: distance, ages and Initial Mass Function

, 2004
We present astrometry and $BVI$ photometry, down to $V\simeq22$, of the very young open cluster NGC6530, obtained from observations taken with the Wide Field Imager camera at the MPG/ESO 2.2 m Telescope. Both the $V$ vs. $B-V$ and the $V$ vs. $V-I$ color-
Alcala, Alves, Baraffe, Baraffe, Bouvier, Briceño, Chabrier, Chini, Damiani, F. Damiani, Feigelson, Flaccomio, Flaccomio, G. Micela, Hiltner, Kenyon, Kilambi, L. Prisinzano, Lada, Landolt, Loktin, Loktin, Mathis, McCall, Meyer, Momany, Muench, Muench, Muench, Munari, Navascues, Randich, Rauw, S. Sciortino, Sagar, Siess, Simon, Sterzik, Stetson, Stetson, Stetson, Stetson, Sung, Sung, The, van Altena, van den Ancker, Walker, Walker   +48 more
core   +1 more source

Extinction Curves, Distances, and Clumpiness of Diffuse Interstellar Dust Clouds [PDF]

, 1999
We present CCD photometry in UBVRI of several thousand Galactic field stars in four large (>1 degree^2) regions centered on diffuse interstellar dust clouds, commonly referred to as ``cirrus'' clouds (with optical depth A_V less than unity).
Arpad Szomoru, Bertelli G., Bowen D. V., Casertano S., de Vaucouleurs G., de Vaucouleurs G., de Vries C. P., Heiles C., Kiszkurno-Koziej E., Magnani L., Mathis J. S., Puragra Guhathakurta, Stark R., Whittet D. C. B., Wolf M.   +14 more
core   +2 more sources

Uniform Forward-modeling Analysis of Ultracool Dwarfs. III. Late-M and L Dwarfs in Young Moving Groups, the Pleiades, and the Hyades

The Astrophysical Journal
We present a uniform forward-modeling analysis of 90 late-M and L dwarfs in nearby young (∼10–200 Myr) moving groups, the Pleiades, and the Hyades using low-resolution ( R ≈ 150) near-infrared (0.9–2.4 μ m) spectra and the BT-Settl model atmospheres.
Spencer A. Hurt, Michael C. Liu, Zhoujian Zhang, Mark Phillips, Katelyn N. Allers, Niall R. Deacon, Kimberly M. Aller, William M. J. Best   +7 more
doaj   +1 more source

Spitzer Observations of the z=2.73 Lensed Lyman Break Galaxy, MS1512-cB58 [PDF]

, 2008
We present Spitzer infrared (IR) photometry and spectroscopy of the lensed Lyman break galaxy (LBG), MS1512-cB58 at z=2.73. The large (factor ~30) magnification allows for the most detailed infrared study of an L*_UV(z=3) LBG to date.
Brian Siana, David T. Frayer, Harry I. Teplitz, James Colbert, Moorwood A. F. M., Prevot M. L., Ranga‐Ram Chary, Williams L. L. R.   +7 more
core   +2 more sources

Silicate–sulfide interaction within quenched melts of space weathered Ryugu grains

Meteoritics &Planetary Science, Volume 60, Issue 7, Page 1480-1501, July 2025.
Abstract The first few microns of the surface of airless bodies are subject to severe changes due to the harsh environment of space, known as space weathering. The Hayabusa2 sample return mission from the asteroid Ryugu provides the first opportunity to study these effects on a carbonaceous and hydrated body.
Sylvain Laforet, Hugues Leroux, Corentin Le Guillou, Maya Marinova, Adrien Néri, Adrien Teurtrie, Francisco de la Peña, Damien Jacob, Alexandre Fadel, David Troadec   +9 more
wiley   +1 more source

PhotoD with LSST: Stellar Photometric Distances Out to the Edge of the Galaxy

The Astronomical Journal
As demonstrated with the Sloan Digital Sky Survey (SDSS), Pan-STARRS, and most recently with Gaia data, broadband near-UV to near-IR stellar photometry can be used to estimate distance, metallicity, and interstellar dust extinction along the line of ...
Lovro Palaversa, Željko Ivezić, Neven Caplar, Karlo Mrakovčić, Bob Abel, Oleksandra Razim, Filip Matković, Connor Yablonski, Toni Šarić, Tomislav Jurkić, Sandro Campos, Melissa DeLucchi, Derek Jones, Konstantin Malanchev, Alex I. Malz, Sean McGuire, Mario Jurić   +16 more
doaj   +1 more source