Results 131 to 140 of about 8,356 (263)

Comprehensive Study of Near-Earth Asteroid 2024 MK: Testing Planetary Encounters as a Source for Surface Refreshing

The Astrophysical Journal Letters
Near-Earth object 2024 MK was discovered on 2024 June 16, less than 2 weeks before it made a sub-lunar-distance close approach. This close approach provided an ideal opportunity to determine how planetary encounters affect asteroid surfaces in ...
Lauren E. McGraw, Cristina A. Thomas, Tim A. Lister, Becky J. Williams, Andy S. Rivkin, Bryan Holler, Leslie A. Young   +6 more
doaj   +1 more source

Repeating Nuclear Transients From Repeating Partial Tidal Disruption Events

Astronomische Nachrichten, Volume 347, Issue 5, June 2026.
ABSTRACT Extragalactic nuclear transients that exhibit repeating outbursts can be modeled as the repeated dynamical interaction between bound stars and supermassive black holes (SMBHs). A subset of these transients, with recurrence timescales of months‐to‐years, have been explained as accretion flares from the repeated tidal stripping of a star by an ...
Ananya Bandopadhyay, Eric R. Coughlin, Julia Fancher, C. J. Nixon, Dheeraj R. Pasham   +4 more
wiley   +1 more source

Improving H2RG Performance in SPHEREx Brassboard Model

The Astrophysical Journal Supplement Series
Spectro-Photometer for the History of the Universe, Epoch of Reionization, and Ices Explorer is an upcoming NASA satellite mission to study the physics of inflation, the history of galaxy formation, and the abundance of biogenic ices in the Milky Way ...
Chi H. Nguyen, Phillip Korngut, C. Darren Dowell, James Bock, Jill Burnham, Samuel Condon, Walter Cook, Grigory Heaton, Howard Hui, Branislav Kecman, Hiromasa Miyasaka, Kenneth Manatt, Hien T. Nguyen, Stephen Padin, Marco Viero   +14 more
doaj   +1 more source

Hidden No More: Spotlight on Tidal Disruption Events in Active Galactic Nuclei

Astronomische Nachrichten, Volume 347, Issue 5, June 2026.
ABSTRACT Tidal disruption events (TDEs) are typically discovered in previously quiescent galaxies. However, earlier studies have revealed a handful of TDEs occurring in pre‐existing active galactic nuclei (AGN). We discuss AT2019aalc, a promising TDE candidate in an AGN, and compare it to similar sources.
Patrik Milán Veres
wiley   +1 more source

Asteroid Impact Hazard Warning from the Near-Earth Object Surveyor Mission

The Planetary Science Journal
NASA’s Near-Earth Object Surveyor mission, scheduled for launch in 2027 September, is designed to detect and characterize at least two-thirds of the potentially hazardous asteroids with diameters larger than 140 m in a nominal 5 yr mission. We describe a
Oliver Lay, Joe Masiero, Tommy Grav, Amy Mainzer, Frank Masci, Edward Wright   +5 more
doaj   +1 more source

Loess Studies in Aotearoa New Zealand

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 2, June 2026.
Loess in Aotearoa New Zealand (ANZ) has been studied since its first documented recognition (on Banks Peninsula) in 1878 by Julius von Haast. A decade later, John Hardcastle revealed that southern ANZ loess was both glacial in origin and contained signals of past climates.
Brent V. Alloway, David J. Lowe, Bradley J. Pillans, Peter C. Almond, Alan S. Palmer   +4 more
wiley   +1 more source

Stellar Characterization and Chemical Abundances of Exoplanet-hosting M Dwarfs from APOGEE Spectra: Future JWST Targets

The Astrophysical Journal
Exoplanets hosting M dwarfs are the best targets to characterize Earth-like or super-Earth planetary atmospheres with the James Webb Space Telescope (JWST).
Edypo Melo, Diogo Souto, Katia Cunha, Verne V. Smith, Fábio Wanderley, Vinicius Grilo, Deusalete Camara, Kely Murta, Neda Hejazi, Ian J. M. Crossfield, Johanna Teske, Rafael Luque, Michael Zhang, Jacob Bean   +13 more
doaj   +1 more source

Synthesis of Core–Shell Te@Se Quantum Dots and Their Broadband Photodetector Performance in Low Concentration Electrolytes

Laser &Photonics Reviews, Volume 20, Issue 12, 18 June 2026.
Te@Se core–shell heterojunction quantum dots (QDs) are synthesized by a two‐step strategy via combining liquid‐phase exfoliation and epitaxial growth. As active materials in photoelectrochemical photodetectors, Te@Se QDs exhibit excellent photo‐response performance in low‐concentration electrolytes and deionized water.
Yiming Zhao, Artem V. Kuklin, Jiahui Hou, Mingqi He, Lyudmila V. Begunovich, Han Zhang, Ying Li, Hans Ågren, Lingfeng Gao   +8 more
wiley   +1 more source

The VVV Templates Project Towards an automated classification of VVV light-curves I. Building a database of stellar variability in the near-infrared

, 2014
Context. The Vista Variables in the Via Lactea (VVV) ESO Public Survey is a variability survey of the Milky Way bulge and an adjacent section of the disk carried out from 2010 on ESO Visible and Infrared Survey Telescope for Astronomy (VISTA).
Jordan, A., Cunial, A., Espinoza, N., Jeon, Y-B, Jeon, Y.B., Hempel, A., Kwon, J., Nagayama, T., Ita, Y, Lee, J. T., Andrews, H., Morelli, L., Catelan, M, Angeloni, R, Lee, J T, Contreras Peña, C, Ferreira Lopes, C. E., Berger, C, Espinoza, N, Jordán, A, Han, J, Andrews, H, Hełminiak, K G, Hempel, M, Navarrete, C, Navarrete, C., Eyheramendy, S, Angeloni, R., Gran, F., Gran, F, Ferreira Lopes, C E, de Grijs, R, Aparicio, A., Hempel, A, Hempel, M., Hidalgo, S L, Fiaschi, M., Murgas, F., Helminiak, K. G., Matsunaga, N., Milone, A. P., Minniti, D., Berger, C., Contreras Pena, C., Masetti, N, Martin, E. L., Hidalgo, S. L., Kwon, J, Beamín, J C, Ita, Y., Contreras Ramos, R, Alonso-García, J, Dékány, I, Contreras Ramos, R., Cunial, A, Han, J., Masetti, N., Borissova, J, Alonso-Garcia, J., Ochner, P, Eyheramendy, S., Borissova, J., Beamin, J. C., Catelan, M., Navarro, C., Hajdu, G., Aparicio, A, Martín, E L, Fiaschi, M, Dekany, I., Hajdu, G, de Grijs, R.   +71 more
core   +1 more source

The K s -band Luminosity Function of the Rich Cluster VC04 in the Vela Supercluster

The Astrophysical Journal
To learn more about the properties of the Vela Supercluster (VSCL), located behind the Milky Way at cz ∼ 18,000 km s ^−1 , we determine the K _s -band luminosity function (LF) of VC04, the richest known galaxy cluster in the VSCL, and two other VSCL ...
N. Hatamkhani, R. C. Kraan-Korteweg, S. L. Blyth, R. E. Skelton   +3 more
doaj   +1 more source