Results 91 to 100 of about 13,470 (289)

New infrared results for classical novae [PDF]

International Astronomical Union Colloquium, 1990
AbstractRecent infrared studies of classical novae are described. The nucleation and growth of dust in nova ejecta was confirmed by optical/infrared photometry of several novae during the past five years including QU Vul, V842 Cen, V827 Her, and QV Vul.
openaire   +1 more source

Histology and fossil diagenesis of a pterosaur tooth from the Crato Formation (Lower Cretaceous of Brazil)

The Anatomical Record, EarlyView.
Abstract Pterosaur dental biology remains poorly understood despite its importance for comprehending feeding strategies and flight adaptations. Here, we present the first comprehensive histological analysis of an ornithocheiriform pterosaur tooth from the Lower Cretaceous Crato Formation (Santana Group, Northeast Brazil).
Tito Aureliano, Matheus P. S. Rocha, Francisco P. Lima‐Filho, Aline M. Ghilardi   +3 more
wiley   +1 more source

Detection of a Molecular Hydrogen Envelope around Nova GK Persei

The Astrophysical Journal Letters
The eruption of Nova Persei 1901 (GK Per) occurred 125 yr ago; remarkably, it still holds major surprises. Using data from the Spectro-Photometer for the History of the Universe, Epoch of Reionization, and Ices Explorer (SPHEREx), we find that it has a ...
D. P. K. Banerjee, A. Evans, T. Liimets, C. E. Woodward, T. R. Geballe, V. Joshi, S. Starrfield   +6 more
doaj   +1 more source

Classical novae: Properties between outbursts [PDF]

International Astronomical Union Colloquium, 1990
With the recent publication of Classical Novae, edited by Bode and Evans, there is no need for me to give a list of novae or their overall characteristics. Furthermore, probably the most interesting developments in the past few years in studies of novae during quiescence have been in those areas (magnetic systems, long term brightness variations) which
openaire   +1 more source

Clade‐wide morphological and functional variation of the sauropsid columella

The Anatomical Record, EarlyView.
Abstract The columella (=stapes) is the middle ear bone of reptiles that transmits vibrations from the environment to the inner ear. It has been shown to exhibit extensive interspecific morphological disparity in several clades; however, its morphological variation and associated functional consequences remain poorly described.
John Peacock, Serjoscha W. Evers, Tiago R. Simões, Garth M. Spellman, Daniel J. Field   +4 more
wiley   +1 more source

Effective Performance of the 2022 American College of Rheumatology/EULAR Classification Criteria for Antineutrophil Cytoplasmic Antibody–Associated Vasculitis in Pediatric Patients: An ARChiVe Study

Arthritis &Rheumatology, EarlyView.
Objective To assess the 2022 American College of Rheumatology (ACR)/EULAR classification criteria for antineutrophil cytoplasmic antibody–associated vasculitis (AAV) in children with chronic small‐to‐medium vessel vasculitis. Methods A cohort of 574 patients, identified by physician's diagnosis (MD‐diagnosis) in A Registry of Childhood Vasculitis, was ...
David A. Cabral, Else S. Bosman, Nick McPhate, Simranpreet K. Mann, Kirandeep K. Toor, Kimberly A. Morishita, Raashid Luqmani, Michael W. Beresford, James Bistolarides, Sarah Campillo, Sirirat Charuvanij, Kathryn Cook, Paul Dancey, Marietta de Guzman, Samundeeswari Deepak, Barbara Eberhard, Melissa Elder, Samuel Gagne, Katie Harrison, Adam Huber, Archana Khan, Susan Kim, Marisa S. Klein‐Gitelman, Tzielan C. Lee, Suzanne C. Li, Neil Martin, Flora McErlane, L. Nandini Moorthy, Alvaro H. Orjuela, Jonathan Park, Phil Riley, Alan M. Rosenberg, Susan Shenoi, Vidya Sivaraman, Sodality Sutnga, Tamara Tanner, Stacey E. Tarvin, Marinka Twilt, Linda Wagner‐Weiner, Rae S. M. Yeung, Kelly L. Brown, for the ARChiVe Investigators Network within the PedVas Initiative   +41 more
wiley   +1 more source

Increased Risk of Intrahepatic Cholestasis of Pregnancy in Women With Systemic Lupus Erythematosus Exposed to Azathioprine

Arthritis &Rheumatology, EarlyView.
Objective To evaluate the risk of intrahepatic cholestasis of pregnancy (ICP) in azathioprine (AZA)–exposed versus unexposed systemic lupus erythematosus (SLE) pregnancies within the multicenter prospective Lupus in Pregnancy (LEGACY) cohort. Methods LEGACY is conducted at Systemic Lupus International Collaborating Clinics in Canada, South Korea, Peru,
Reem Farhat, Maria del Carmen Zamora‐Medina, Sang‐Cheol Bae, Megan R. W. Barber, Ann E. Clarke, Paul R. Fortin, Zahi Touma, Carl A. Laskin, Isabelle Malhamé, Giada Sebastiani, Christine Peschken, Manuel F. Ugarte‐Gil, Alexandra Legge, Sasha Bernatsky, Évelyne Vinet   +14 more
wiley   +1 more source

Fermi-LAT detections of the classical novae V1723 Sco and V6598 Sgr in a multi-wavelength context

Astronomy & Astrophysics
Context. Numerous classical novae have been observed to emit γ-rays (E > 100 MeV) detected by the Fermi-LAT. The prevailing hypothesis attributes this emission to the interaction of accelerated particles within shocks in the nova ejecta.
Fauverge P., Jean P., Sokolovsky K., Cheung C. C., Lemoine-Goumard M., Grondin M.-H., Chomiuk L., Dickenson A., Linford J. D., Mukai K., Sokoloski J. L.   +10 more
doaj   +1 more source

Recurrent Novae — A Review

Acta Polytechnica CTU Proceedings, 2015
In recent years, recurrent nova eruptions are often observed very intensely in wide range of wavelengths from radio to optical to X-rays. Here I present selected highlights from recent multi-wavelength observations. The enigma of T Pyx is at the heart of
K. Mukai
doaj   +1 more source

Explosive lithium production in the classical nova V339 Del (Nova Delphini 2013)

, 2015
The origin of lithium (Li) and its production process have long been an unsettled question in cosmology and astrophysics. Candidates environments of Li production events or sites suggested by previous studies include big bang nucleosynthesis ...
Aoki, Wako, Arai, Akir, Naito, Hiroyuki, Sadakane, Kozo, Tajitsu, Akito   +4 more
core   +1 more source