Results 51 to 60 of about 12,001 (263)

An Eccentric Binary with a Misaligned Circumbinary Disk

The Astrophysical Journal Letters
We present spectroscopic and photometric observations of Bernhard-2, which was previously identified as a candidate system that hosts a misaligned circumbinary disk. Our spectroscopic measurements confirm that Bernhard-2 indeed contains an eccentric ( e =
Zhecheng Hu, Wei Zhu, Fei Dai, Ping Chen, Yang Huang, Min Fang, Richard S. Post   +6 more
doaj   +1 more source

AscF in the mycobacterial CIII–CIV supercomplex lacks metal and nucleotide binding but links malate oxidation to respiration

FEBS Letters, EarlyView.
The mycobacterial CIII‐CIV respiratory supercomplex is an obligate assembly, encompassing several subunits of unknown functions. We have characterized the intracellular subunit AscF, and show that it is unlikely to be a sensor for metals or nucleotides, but is required for growth on nonfermentable energy sources, and likely works as an adapter for ...
Eni Rile, Riccardo Diamanti, Daniel Lundin, Soni Sharma, Robin Lissner, Coenraad P. Kuil, Martin Högbom, Dirk Bald, Dan Sjöstrand   +8 more
wiley   +1 more source

Spectral Biases, Starspot Morphology, and Dynamo Transitions on the Pre-main Sequence: Insights from the X-Shooter WTTS Library

The Astrophysical Journal
Starspots are ubiquitous in young, low-mass stars, yet their impact on the spectral classification and fundamental parameter inference of pre-main-sequence stars (PMS) has been largely overlooked.
Facundo Pérez Paolino, Jeffrey S. Bary, Lynne A. Hillenbrand, Benjamin Horner, Adolfo Carvalho   +4 more
doaj   +1 more source

PENELLOPE

Astronomy & Astrophysics
We conducted a homogeneous chemical analysis of pre-main sequence stars with effective temperatures ranging from ∼3000 K to ∼5500 K in eight nearby star-forming regions (SFRs): Chamaeleon I, η Chamaeleonis, Lupus, Orion OB1a, Orion OB1b, σ Orionis ...
Carini R., Biazzo K., Frasca A., Manara C. F., Alcalá J. M., Ábráham P., Campbell-White J., Claes R., Fang M., Gangi M., Gameiro J. F., Kóspál Á., Mauco K., Mendigutía I., Nisini B., Robberto M., Robinson C. E., Schneider C., Siwak M., Sperling T., Tychoniec L., Venuti L.   +21 more
doaj   +1 more source

Probing the Circumstellar Structure of Pre-main Sequence Stars [PDF]

, 2003
8 pages; 8 figures; to appear in:"Open Issues in Local Star Formation and Early Evolution"
Vink, Jorick S., Drew, Janet E., Harries, Tim J., Oudmaijer, Rene D.   +3 more
openaire   +2 more sources

Circular RNA expression landscapes in myelodysplastic neoplasms: Associations with mutational signatures and disease progression

Molecular Oncology, EarlyView.
In this explorative study, the abundance of circular RNA molecules in bone marrow stem cells was found to be elevated in patients with high‐risk myelodysplastic neoplasms, and to be associated with an increased risk of progression to acute myeloid leukemia.
Eileen Wedge, Morten Tulstrup, Gabriele Todisco, Pedro Moura, Christophe Côme, Jakob Werner Hansen, Jakob Schmidt Jespersen, Balthasar Schlotmann, Maria Creignou, Mette Dahl, Claudia Schöllkopf, Klas Raaschou‐Jensen, Krister Wennerberg, Bo Porse, Joachim Weischenfeldt, Eva Hellström‐Lindberg, Lasse Sommer Kristensen, Kirsten Grønbæk   +17 more
wiley   +1 more source

Keratin 19 as a prognostic marker and contributing factor of metastasis and chemoresistance in high‐grade serous ovarian cancer

Molecular Oncology, EarlyView.
Keratin 19 (KRT19) is overexpressed in high‐grade serous ovarian cancer with high levels of Kallikrein‐related peptidases (KLK) 4–7 and is associated with poor survival. In vivo analyses demonstrate that elevated KRT19 increases peritoneal tumour burden.
Sophia Bielesch, Isabel Vogel, Sina Nokodian, Johanna Moeller, Antonia Blechschmidt, Vicky Hecht, Vanessa Kuentzel, Katharina Thiedig, Melissa Schwab, Oliver Schilling, Holger Bronger, Marion Kiechle, Viktor Magdolen, Tobias Dreyer   +13 more
wiley   +1 more source

Orbital motion and dynamical mass of the complex periodic variable binary system 2MASS J05082729–2101444

Astronomy & Astrophysics
Aims. This study focuses on the low-mass binary 2MASS J05082729-2101444 (2M0508-21), one of the few known radio-loud members of the complex periodic variable sample. Our aim is to use very long baseline interferometry to constrain the orbit. Methods.
Curiel S., Ortiz-León G. N., Béjar V. J. S., Viganò D., Girart J. M., Kaur S., Shan Y., Murgas F., Zechmeister M., Amado P. J., Caballero J. A., Henning Th., Ilin E., Montes D., Morales J. C., Morata Ò., Pérez-Torres M., Quirrenbach A., Reiners A., Ribas I., Sánchez-Monge Á., Schweitzer A., Vico Linares J. I., Zapatero Osorio M. R.   +23 more
doaj   +1 more source

The –M disk Relationship for Herbig Ae/Be Stars: A Lifetime Problem for Disks with Low Masses?

The Astronomical Journal, 2023
The accretion of material from protoplanetary disks onto their central stars is a fundamental process in the evolution of these systems and a key diagnostic in constraining the disk lifetime. We analyze the relationship between the stellar accretion rate
Sierra L. Grant, Lucas M. Stapper, Michiel R. Hogerheijde, Ewine F. van Dishoeck, Sean Brittain, Miguel Vioque   +5 more
doaj   +1 more source

CCDC80 suppresses high‐grade serous ovarian cancer migration via negative regulation of B7‐H3

Molecular Oncology, EarlyView.
PAX8 is a lineage‐specific master regulator of transcription in high‐grade serous ovarian cancer (HGSC) progression. We show for the first time that PAX8 facilitates proliferation and metastasis by repressing the cell autonomous tumor suppressor CCDC80 and inducing B7‐H3 expression.
Aya Saleh, Nitzan Medina‐Itzhaki, Milena Chekov, Eden Gal‐Swisa, Roba Gabesh‐Wahabi, Inbar Savyon, Inna Naroditsky, Hilary A. Kenny, Basem Fares, Lina Korsensky, Einav Girsh, Liron Berger, Ruth Perets   +12 more
wiley   +1 more source