Results 121 to 130 of about 13,442,946 (252)

Pregalactic-primordial low-mass stars

, 1987
The Main-Sequence positions as well as the evolutionary behavior of Population III stars up to an evolution age of 2×1010 yr, taking this time as the age of the Universe, have been investigated in the mass range 0.2 and 0.8M ⊙. While Population III stars
Eryurt, Dilhan Ezer, Kızıloğlu, Nilgün Gülşan, KIZILOGLU, N, ERYURTEZER, D, N. Kiziloğlu, D. Eryurt-Ezer   +5 more
core   +1 more source

TOI-3288 b and TOI-4666 b: Two gas giants transiting low-mass stars characterised by NIRPS

Astronomy & Astrophysics
Context. Gas giant planets orbiting low-mass stars (Teff ≲ 4600 K) are uncommon outcomes of planet formation. Increasing the sample of well-characterised giants around early M dwarfs will enable population-level studies of their properties, offering ...
Frensch Yolanda G. C., Bouchy François, Lo Curto Gaspare, L’Heureux Alexandrine, de Lima Gomes Roseane, Faria João, Dumusque Xavier, Malo Lison, Cointepas Marion, Srivastava Avidaan, Bonfils Xavier, Delgado-Mena Elisa, Nari Nicola, Artigau Étienne, Baron Frédérique, Barros Susana C. C., Benneke Björn, Bryan Marta, Canto Martins Bruno L., de Castro Leão Izan, Cloutier Ryan, Cook Neil J., Cowan Nicolas B., Cristo Eduardo, De Medeiros Jose R., Delfosse Xavier, Doyon René, Ehrenreich David, González Hernández Jonay I., Lafrenière David, Lovis Christophe, Melo Claudio, Mignon Lucile, Mordasini Christoph, Pepe Francesco, Rebolo Rafael, Rowe Jason, Santos Nuno C., Ségransan Damien, Suárez Mascareño Alejandro, Udry Stéphane, Valencia Diana, Wade Gregg, Al Moulla Khaled, Allart Romain, Almenara Jose M., Barkaoui Khalid, Cadieux Charles, Castro-González Amadeo, Collins Karen A., Fajardo-Acosta Sergio B., Forveille Thierry, Gan Tianjun, da Silva João Gomes, Grieves Nolan, Hobson Melissa J., Howell Steve, Lamontagne Pierrot, Messamah Lina, Nielsen Louise D., Osborn Ares, Parc Léna, Piaulet-Ghorayeb Caroline, Stassun Keivan G., Stefanov Atanas K., Striegel Stephanie, Ulmer-Moll Solène, Vaulato Valentina, Watkins Cristilyn N.   +68 more
doaj   +1 more source

Circulating microRNA signatures of cachexia and cancer in Canis familiaris as a comparative oncology model for human disease

Molecular Oncology, EarlyView.
Circulating microRNAs as biomarkers of cachexia and sex‐specific cancer in senior dogs. In 25 client‐owned dogs, four circulating miRNAs (miR‐15a, miR‐15b, miR‐16, miR‐140) were downregulated in cachexia, with miR‐16 the strongest individual biomarker (AUC = 0.899).
Soon‐Seok Park, Kyongman An, Gyeonghwa Kim, Soo‐Nyun Choi, Hong‐Ki Lee, Keun Hur, Kyu‐Shik Jeong   +6 more
wiley   +1 more source

A Search for Low-mass Neutron Stars in the Third Observing Run of Advanced LIGO and Virgo

The Astrophysical Journal
Most observed neutron stars have masses around 1.4 M _⊙ , consistent with current formation mechanisms. To date, no subsolar-mass neutron star has been observed.
Keisi Kacanja, Alexander H. Nitz
doaj   +1 more source

Neutron star masses from electron-capture supernovae under equation-of-state uncertainties

Astronomy & Astrophysics
Electron-capture supernovae (ECSNe) are a promising formation channel for low-mass neutron stars, but the minimum gravitational mass of the neutron stars they produce depends on both the progenitor core structure and the neutron-star matter equation of ...
Parmar Vishal, Scordino Domenico, Bombaci Ignazio   +2 more
doaj   +1 more source

Somatostatin receptor 4 (SSTR4) is a tumor suppressor in cutaneous and head & neck squamous cell carcinomas

Molecular Oncology, EarlyView.
This study identifies somatostatin receptor 4 (Sstr4) as a critical tumor suppressor against skin and head/neck cancers (HNSCC, cSCC, and BCC). The loss of Sstr4 removes a check on cell growth, causing hyperactivation of the MAPK‐ERK signaling pathway (↑).
Ali Taqvi, Tuan Khang Huynh, Adway Kadam, Zahra Kardan, Yue Yan, Amina Jamal Laham, Sampath Kumar Loganathan   +6 more
wiley   +1 more source

Low-mass Stellar and Substellar Candidate Companions around Massive Stars in Sco OB1 and M17

The Astronomical Journal
Massive stars are recognized for their high degree of multiplicity, yet the mass ratio regime below 0.1 remains insufficiently explored. It is therefore unknown whether extremely low-mass (possibly substellar) companions can form and survive in the ...
Tinne Pauwels, Maddalena Reggiani, Hugues Sana, Laurent Mahy   +3 more
doaj   +1 more source

The VHL tumor suppressor at the crossroad of protein folding, aggregation, and cancer

Molecular Oncology, EarlyView.
Mutations, environmental stress, and chaperone dysfunction can destabilize pVHL, promoting its conversion from the native folded state into amyloid‐like assemblies. This transition may contribute to protein storage, cell dormancy, survival, and drug resistance.
Lara Abad, Silvio Carlo Ermanno Tosatto, Emanuela Leonardi   +2 more
wiley   +1 more source

Gut microbiota alterations in patients with non‐small‐cell lung cancer undergoing chemoradiotherapy

Molecular Oncology, EarlyView.
We investigated the impact of concurrent chemoradiotherapy (CRT) on the gut microbiota in patients with locally advanced non‐small‐cell lung cancer. Overall gut microbiota composition remained largely stable throughout CRT while antibiotic exposure may influence microbial diversity.
Hanne Marte Nymoen, Zhi Zhao, Henrik Horndalsveen, Maria Moksnes Bjaanæs, Bjørn Henning Grønberg, Tarje Halvorsen, Tesfaye Madebo, Marianne Aanerud, Jussi Koivunen, Kersti Oselin, Saulius Cicenas, Nina Helbekkmo, Jarkko Ahvonen, Maria Silvoniemi, Tine Norman Alver, Tonje Dalen, Åsa Kristina Öjlert, Saima Jamil Farooqi, Åslaug Helland, Vilde Drageset Haakensen   +19 more
wiley   +1 more source

Low-mass stars with extreme mid-infrared excesses: potential signatures of planetary collisions [PDF]

, 2018
I investigate the occurrence of extreme mid-infrared (MIR) excesses, a tracer of large amounts of dust orbiting stars, in low-mass stellar systems. Extreme MIR excesses, defined as an excess IR luminosity greater than 1% of the stellar luminosity (L_IR/L∗
Theissen, Christopher
core   +1 more source