Results 81 to 90 of about 4,911 (246)

Prediscovery Activity of New Interstellar Object 3I/ATLAS: Rapid Brightening from 6 to 4 au

The Astrophysical Journal Letters
We report on the prediscovery observations and constraints of the new interstellar comet 3I/2025 N1 (ATLAS), made by the Zwicky Transient Facility, for the inbound leg of the comet out to a heliocentric distance of r _h  = 17 au, or approximately a year ...
Quanzhi Ye, Michael S. P. Kelley, Henry H. Hsieh, Eric C. Bellm, Tracy X. Chen, Richard Dekany, Andrew Drake, Steven L. Groom, George Helou, Shrinivas R. Kulkarni, Thomas A. Prince, Reed Riddle   +11 more
doaj   +1 more source

The Story(line) So Far: A Survey on Storyline Visualization

Computer Graphics Forum, EarlyView.
Abstract Storyline visualizations model narratives as temporal networks, using x‐monotone lines to represent entities and their interactions over time. This technique offers an intuitive way to reveal structural patterns over time, such as character co‐occurrence and narrative flow.
S. Di Bartolomeo, A. Dobler, V. Filipov, M. Nöllenburg, H. Ehlers   +4 more
wiley   +1 more source

An Upper Limit on the Interstellar Meteoroid Flux at Video Sizes from the Global Meteor Network

The Astrophysical Journal
Material arriving at our solar system from the Galaxy may be detected on Earth in the form of meteors ablating in our atmosphere. Here, we report on a search for interstellar meteors within the highest-quality events in the Global Meteor Network (GMN ...
Paul Wiegert, Vanessa Tran, Cole Gregg, Denis Vida, Peter Brown   +4 more
doaj   +1 more source

Evaluating maturity of organic matter in hydrated C1 and CM‐like clasts and a dehydrated clast within a polymict eucrite and a howardite

Meteoritics &Planetary Science, EarlyView.
Abstract Volatile‐rich xenolithic clasts in different types of brecciated meteorites represent unique pristine solar system material. This study investigates the maturity and thermal history of organic matter using Raman spectroscopy and aqueous alteration effects using infrared spectroscopy in the matrix of 15 volatile‐rich clasts (C1 and CM‐like ...
Swarna Prava Das, Alessandro Maturilli, Aurélie Van den Neucker, Markus Patzek, Dipak Kumar Panda, Gopal K. Pradhan, Guneshwar Thangjam, Surya Snata Rout   +7 more
wiley   +1 more source

The interstellar flux gap: From dust to kilometer-scale objects [PDF]

Context. Three kilometer-sized interstellar objects (ISOs) have been detected transiting the Solar System, and spacecraft have directly measured micrometer-scale interstellar dust (ISD).
D. Z. Seligman, E. Peña-Asensio
core   +1 more source

Raman analysis of organic refractory materials after energetic processing: Evidence for amorphous carbon on TNOs and comets

Meteoritics &Planetary Science, EarlyView.
Abstract Amorphous carbon (αC) is found in various extraterrestrial particles, including those thought to originate from the outer Solar System. αC can form through two main processes involving C‐rich materials: exposure to energetic charged particles and thermal processing.
M. Germanà, A. Vyjidak, G. A. Baratta, B. M. Giuliano, R. G. Urso, C. Scirè, D. Fulvio, T. Grassi, P. Jusko, P. Caselli, M. E. Palumbo   +10 more
wiley   +1 more source

Onset of CN Emission in 3I/ATLAS: Evidence for Strong Carbon-chain Depletion

The Astrophysical Journal Letters
Interstellar objects provide a direct window into the environmental conditions around stars other than the Sun. The recent discovery of 3I/ATLAS, a new interstellar comet, offers a unique opportunity to investigate the physical and chemical properties of
Luis E. Salazar Manzano, Hsing Wen Lin, Aster G. Taylor, Darryl Z. Seligman, Fred C. Adams, David W. Gerdes, Thomas Ruch, Tessa T. Frincke, Kevin J. Napier   +8 more
doaj   +1 more source

Massive Star Formation in the Tarantula Nebula

The Astrophysical Journal, 2023
In this work, we present 299 candidate young stellar objects (YSOs) in 30 Doradus discovered using Spitzer and Herschel point-source catalogs, 276 of which are new.
Omnarayani Nayak, Alex Green, Alec S. Hirschauer, Rémy Indebetouw, Margaret Meixner, Tony Wong, Mélanie Chevance, Guido De Marchi, Vianney Lebouteiller, Min-Young Lee, Leslie W. Looney, Suzanne C. Madden, Julia Roman-Duval, Yasuo Fukui, Alvaro Hacar, K. E. Jameson, Venu Kalari, Luuk Oudshoorn, Mónica Rubio, Elena Sabbi   +19 more
doaj   +1 more source

Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight

Experimental Physiology, EarlyView.
Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley   +1 more source

Postperihelion Optical Low-resolution Spectroscopy of Interstellar Comet 3I/ATLAS

The Astrophysical Journal Letters
3I/ATLAS is the third interstellar object discovered on UT 2025 July 1, when it was inbound at a heliocentric distance of r _h  = 4.51 au. Preperihelion optical spectroscopic observations at r _h < 3 au suggested that 3I/ATLAS resembled “carbon-chain ...
Hideyo Kawakita, Ko Tsujimoto, Yoshiharu Shinnaka, Hitomi Kobayashi, Takafumi Ootsubo, Jun-ichi Watanabe   +5 more
doaj   +1 more source