Results 61 to 70 of about 2,509,689 (140)

Bioverse: Potentially Observable Exoplanet Biosignature Patterns under the UV Threshold Hypothesis for the Origin of Life

The Astrophysical Journal
A wide variety of scenarios for the origin of life have been proposed, with many influencing the prevalence and distribution of biosignatures across exoplanet populations.
Martin Schlecker, Dániel Apai, Antonin Affholder, Sukrit Ranjan, Régis Ferrière, Kevin K. Hardegree-Ullman, Tim Lichtenberg, Stéphane Mazevet   +7 more
doaj   +1 more source

easyspec: An Open-source Python Package for Long-slit Spectroscopy

The Astronomical Journal
In modern-day astronomy, near-infrared, optical, and ultraviolet spectroscopy are indispensable for studying a wide range of phenomena, from measuring black hole masses to analyzing chemical abundances in stellar atmospheres.
Raniere de Menezes, Francesco Massaro, Michela Negro, Claudia M. Raiteri, Harold Peña-Herazo, Jose A. Acosta-Pulido   +5 more
doaj   +1 more source

An Angular Diameter Measurement of β UMa via Stellar Intensity Interferometry with the VERITAS Observatory

The Astrophysical Journal
We use the Very Energetic Radiation Imaging telescope Array System (VERITAS) imaging air Cherenkov telescope array to obtain the first measured angular diameter of β UMa at visual wavelengths using stellar intensity interferometry (SII) and independently
A. Acharyya, J. P. Aufdenberg, P. Bangale, J. T. Bartkoske, P. Batista, W. Benbow, A. J. Chromey, J. D. Davis, Q. Feng, G. M. Foote, A. Furniss, W. Hanlon, C. E. Hinrichs, J. Holder, W. Jin, P. Kaaret, M. Kertzman, D. Kieda, T. K. Kleiner, N. Korzoun, T. LeBohec, M. A. Lisa, M. Lundy, N. Matthews, C. E McGrath, M. J. Millard, P. Moriarty, S. Nikkhah, S. O’Brien, R. A. Ong, M. Pohl, E. Pueschel, J. Quinn, P. L. Rabinowitz, K. Ragan, E. Roache, J. G. Rose, J. L. Sackrider, I. Sadeh, L. Saha, G. H. Sembroski, R. Shang, D. Tak, M. Ticoras, J. V. Tucci, D. A. Williams, S. L. Wong, The VERITAS Collaboration   +47 more
doaj   +1 more source

A Study of Babylonian Goal-Year Planetary Astronomy [PDF]

, 2009
Throughout the Late Babylonian Period, Mesopotamian astronomers made nightly observations of the planets, Moon and stars. Based on these observations, they developed several different techniques for predicting future astronomical events.
GRAY, JENNIFER,MARY,KNIGHTLEY, Gray, Jennifer Mary Knightley   +1 more
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EAA: Adapting the Segment Anything Model for Perception-driven Astronomical Source Extraction

The Astrophysical Journal Supplement Series
Source extraction is a fundamental task in astronomical data analysis, yet existing methods are often specialized to specific instruments, spectral bands, or imaging conditions, which limits their generalizability.
Han Wang, Tongsu Zhang, Siyang Chen, Guoyi Zhang, Zhihua Shen, Xia Yang, Peter J. Wheatley, Jorge Fernández Fernández, Ioannis Apergis, Matthew R. Burleigh, Don Pollacco, Bin Lin, James A. Blake, Xiaohu Zhang   +13 more
doaj   +1 more source

The PHANGS-HST-Hα Survey: Warm Ionized Gas Physics at High Angular Resolution in Nearby Galaxies with the Hubble Space Telescope

The Astronomical Journal
The PHANGS project is assembling a comprehensive, multiwavelength data set of nearby (∼5–20 Mpc), massive star-forming galaxies to enable multiphase, multiscale investigations into the processes that drive star formation and galaxy evolution.
Rupali Chandar, Ashley T. Barnes, David A. Thilker, Miranda Caputo, Matthew R. Floyd, Adam K. Leroy, Leonardo Úbeda, Janice C. Lee, Médéric Boquien, Daniel Maschmann, Francesco Belfiore, Kathryn Kreckel, Simon C. O. Glover, Ralf S. Klessen, Brent Groves, Daniel A. Dale, Eva Schinnerer, Eric Emsellem, Erik Rosolowsky, Frank Bigiel, Guillermo Blanc, Mélanie Chevance, Enrico Congiu, Oleg V. Egorov, Chris Faesi, Kathryn Grasha, Stephen Hannon, Kirsten L. Larson, Laura A. Lopez, Angus Mok, Justus Neumann, Eve Ostriker, Alessandro Razza, Patricia Sánchez-Blázquez, Francesco Santoro, Andreas Schruba, Jiayi Sun, Antonio Usero, E. Watkins, Bradley C. Whitmore, Thomas G. Williams   +40 more
doaj   +1 more source

Near infrared wavelength relevance detection of ultraviolet radiation-induced erythema

, 2008
The acute effects of sun-bathing on the near-infrared absorption spectra of human skin were studied by exposing the shoulders of a male test subject to bright Finnish high summer mid-day sun.
Kanniainen, Olli,, Välisuo, Petri,, Alander, Jarmo,, Koljonen, Janne,, Autere, Antti,, Nordling, Torbjörn E M,   +5 more
core   +1 more source

The Astronomy Spacelab Payloads Study: Executive volume [PDF]

, 1975
The progress of the Astronomy Spacelab Payloads Project at the Goddard Space Flight Center is reported. Astronomical research in space, using the Spacelab in conjunction with the Space Shuttle, is described. The various fields of solar astronomy or solar

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Rocket and Laboratory Studies in Astronomy

, 2001
This is the final report for NASA Grant NAG5-5122 and covers the period from March 1, 1997 to February 28, 2001. This grant was a continuation of a program in rocket and laboratory studies in ultraviolet astronomy that was supported by NASA grant NAG5 ...
Feldman, Paul D.
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Astronomy Education Research Down Under [PDF]

, 2005
A review of research conducted in Australasia into students' concept development in astronomy identifies a number of learning difficulties pertinent to astronomy, such as the lack of prior knowledge, intuitive or naive beliefs, juxtaposition and frames ...
Ginns, Ian S., Broadfoot, John, Ginns, Ian, Broadfoot, John M.   +3 more
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