Results 11 to 20 of about 180 (127)

Laboratory exploration of mineral precipitates from Europa's subsurface ocean. [PDF]

open access: yesJ Appl Crystallogr, 2021
Precipitation experiments from a model Europan ocean solution subjected to fast and slow freezing suggest that the highly hydrated Na–Mg sulfate phase Na2Mg(SO4)2·16H2O is one of the lowest‐temperature mineral phases likely to be stable on Europa's surface and may therefore be astrobiologically significant.The precipitation of hydrated phases from a ...
Thompson SP   +5 more
europepmc   +2 more sources

On the application of machine learning in astronomy and astrophysics: A text‐mining‐based scientometric analysis

open access: yesWIREs Data Mining and Knowledge Discovery, Volume 12, Issue 5, September/October 2022., 2022
This work presents a text‐mining‐based scientometric analysis of the scientific output in the last three decades regarding the use of artificial intelligence and machine learning in the fields of astronomy and astrophysics. Abstract Since the beginning of the 21st century, the fields of astronomy and astrophysics have experienced significant growth at ...
José‐Víctor Rodríguez   +2 more
wiley   +1 more source

SARS‐CoV‐2 infection and venous thromboembolism after surgery: an international prospective cohort study

open access: yesAnaesthesia, Volume 77, Issue 1, Page 28-39, January 2022., 2022
Summary SARS‐CoV‐2 has been associated with an increased rate of venous thromboembolism in critically ill patients. Since surgical patients are already at higher risk of venous thromboembolism than general populations, this study aimed to determine if patients with peri‐operative or prior SARS‐CoV‐2 were at further increased risk of venous ...
COVIDSurg Collaborative   +16163 more
wiley   +1 more source

Application of Spectroscopy Technology in Nanomaterials in Identification of Chinese Paintings

open access: yesJournal of Nanomaterials, Volume 2022, Issue 1, 2022., 2022
The authenticity of calligraphy and painting is an important knowledge in the collection and research of Chinese painting and calligraphy. The identification of folk painting and calligraphy is usually conducted by experts and scholars engaged in cultural relics, archaeology, painting and calligraphy, and ancient buildings.
Lili Bai   +3 more
wiley   +1 more source

Resolving stellar populations with integral field spectroscopy

open access: yesAstronomische Nachrichten, Volume 340, Issue 9-10, Page 989-995, November‐December 2019., 2019
Abstract High‐performance instruments at large ground‐based telescopes have made integral field spectroscopy (IFS) a powerful tool for the study of extended objects such as galaxies, nebulae, or even larger survey fields on the sky. Here, we discuss the capabilities of IFS for the study of resolved stellar populations, using the new method of point ...
Martin M. Roth   +2 more
wiley   +1 more source

The Observer’s Guide to the Gamma‐Ray Burst Supernova Connection

open access: yesAdvances in Astronomy, Volume 2017, Issue 1, 2017., 2017
We present a detailed report of the connection between long‐duration gamma‐ray bursts (GRBs) and their accompanying supernovae (SNe). The discussion presented here places emphasis on how observations, and the modelling of observations, have constrained what we know about GRB‐SNe.
Zach Cano   +4 more
wiley   +1 more source

Imaging FTS: A Different Approach to Integral Field Spectroscopy

open access: yesAdvances in Astronomy, Volume 2014, Issue 1, 2014., 2014
Imaging Fourier transform spectroscopy (iFTS) is a promising, although technically very challenging, option for wide‐field hyperspectral imagery. We present in this paper an introduction to the iFTS concept and its advantages and drawbacks, as well as examples of data obtained with a prototype iFTS, SpIOMM, attached to the 1.6 m telescope of the ...
Laurent Drissen   +8 more
wiley   +1 more source

Intermediate Mass Black Holes: Their Motion and Associated Energetics

open access: yesAdvances in High Energy Physics, Volume 2014, Issue 1, 2014., 2014
There is a lot of current astrophysical evidence and interest in intermediate mass black holes (IMBH), ranging from a few hundred to several thousand solar masses. The active galaxy M82 and the globular cluster G1 in M31, for example, are known to host such objects.
C. Sivaram, Kenath Arun, Christian Corda
wiley   +1 more source

Studying the Interstellar Medium of H II/BCD Galaxies Using IFU Spectroscopy

open access: yesAdvances in Astronomy, Volume 2013, Issue 1, 2013., 2013
We review the results from our studies, and previous published work, on the spatially resolved physical properties of a sample of H ii/BCD galaxies, as obtained mainly from integral‐field unit spectroscopy with Gemini/GMOS and VLT/VIMOS. We confirm that, within observational uncertainties, our sample galaxies show nearly spatially constant chemical ...
Patricio Lagos   +2 more
wiley   +1 more source

Are Wolf‐Rayet Stars Able to Pollute the Interstellar Medium of Galaxies? Results from Integral Field Spectroscopy

open access: yesAdvances in Astronomy, Volume 2013, Issue 1, 2013., 2013
We investigate the spatial distribution of chemical abundances in a sample of low metallicity Wolf‐Rayet (WR) galaxies selected from the SDSS. We used the integral field spectroscopy technique in the optical spectral range (3700 Å–6850 Å) with PMAS attached to the CAHA 3.5 m telescope.
Enrique Pérez-Montero   +6 more
wiley   +1 more source
13. climate action
10. no inequality
fos: physical sciences
7. clean energy
4. education
astrophysics
solar and stellar astrophysics astro-ph.sr
14. life underwater
astrophysics - solar and stellar astrophysics
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