Results 31 to 40 of about 765,419 (288)

Visual Orbits and Alignments of Planet-hosting Binary Systems

The Astronomical Journal, 2023
Roughly half of Solar-type planet hosts have stellar companions, so understanding how these binary companions affect the formation and evolution of planets is an important component to understanding planetary systems overall.
Kathryn V. Lester, Steve B. Howell, Rachel A. Matson, Elise Furlan, Crystal L. Gnilka, Colin Littlefield, David R. Ciardi, Mark E. Everett, Sergio B. Fajardo-Acosta, Catherine A. Clark   +9 more
doaj   +1 more source

Asteroseismic masses of retired planet-hosting A-stars using SONG

, 2020
To better understand how planets form, it is important to study planet occurrence rates as a function of stellar mass. However, estimating masses of field stars is often difficult.
Kjeldsen, H, Christensen-Dalsgaard, J, Stello, Dennis, Huber, D, Bedding, T. R., Palle, Pere L., Antoci, Victoria, Fredslund, Mads, Casagrande, Luca, Lloyd, J P, Grundahl, Frank, Ireland, Michael   +11 more
core   +1 more source

Spectroscopic metallicities for planet-host stars: Extending the samples [PDF]

Astronomy & Astrophysics, 2005
Accepted for publication in A&A; Replaced by new version on 19/04/2005: corrections in Tables 1 and ...
Santos, N. C., Israelian, G., Mayor, M., Bento, J. P., Almeida, P. C., Sousa, S. G., Ecuvillon, A.   +6 more
openaire   +2 more sources

Close-by planets and flares in their host stars [PDF]

Astronomy & Astrophysics, 2018
Context. The interaction between the magnetic fields of late-type stars and their close-by planets may produce stellar flares as observed in active binary systems. However, in spite of several claims, conclusive evidence is still lacking. Aim. We estimate the magnetic energy available in the interaction using analytical models to provide an upper bound
openaire   +3 more sources

Lucky imaging of transiting planet host stars with LuckyCam [PDF]

Monthly Notices of the Royal Astronomical Society, 2013
We obtained high-resolution, high-contrast optical imaging in the SDSS $i'$ band with the LuckyCam camera mounted on the 2.56m Nordic Optical Telescope, to search for faint stellar companions to 16 stars harbouring transiting exoplanets. The Lucky Imaging technique uses very short exposures to obtain near diffraction-limited images yielding sub ...
Faedi, F., Staley, T., Gomez Maqueo Chew, Y., Pollacco, D., Dhital, S., Barros, S. C. C., Skillen, I., Hebb, L., Mackay, C., Watson, C. A.   +9 more
openaire   +3 more sources

CHEMICAL IMPRINTS IN ATMOSPHERIC ABUNDANCES IN PLANET- HOSTING STARS

Odessa Astronomical Publications, 2019
We examined 12 planet-hosting stars based on homogeneous spectral data (obtained with the SOPHIE echelle spectrograph with R = 75,000 at the OHP, France) and using uniform techniques for determination of parameters and abundances of a series of elements (
T. Mishenina, N. Basak, V. Kovtyukh
doaj   +1 more source

MOA-2020-BLG-208Lb: Cool Sub-Saturn-mass Planet within Predicted Desert

The Astronomical Journal, 2023
We analyze the MOA-2020-BLG-208 gravitational microlensing event and present the discovery and characterization of a new planet, MOA-2020-BLG-208Lb, with an estimated sub-Saturn mass.
Greg Olmschenk, David P. Bennett, Ian A. Bond, Weicheng Zang, Youn Kil Jung, Jennifer C. Yee, Etienne Bachelet, Leading authors, Fumio Abe, Richard K. Barry, Aparna Bhattacharya, Hirosane Fujii, Akihiko Fukui, Yuki Hirao, Stela Ishitani Silva, Yoshitaka Itow, Rintaro Kirikawa, Iona Kondo, Naoki Koshimoto, Yutaka Matsubara, Sho Matsumoto, Shota Miyazaki, Brandon Munford, Yasushi Muraki, Arisa Okamura, Clément Ranc, Nicholas J. Rattenbury, Yuki Satoh, Takahiro Sumi, Daisuke Suzuki, Taiga Toda, Paul J. Tristram, Aikaterini Vandorou, Hibiki Yama, The MOA Collaboration, Michael D. Albrow, Sang-Mok Cha, Sun-Ju Chung, Andrew Gould, Cheongho Han, Kyu-Ha Hwang, Dong-Jin Kim, Hyoun-Woo Kim, Seung-Lee Kim, Chung-Uk Lee, Dong-Joo Lee, Yongseok Lee, Byeong-Gon Park, Richard W. Pogge, Yoon-Hyun Ryu, In-Gu Shin, Yossi Shvartzvald, The KMTNet Collaboration, Grant Christie, Tony Cooper, John Drummond, Jonathan Green, Steve Hennerley, Jennie McCormick, L. A. G. Monard, Tim Natusch, Ian Porritt, Thiam-Guan Tan, The MicroFUN Collaboration, Shude Mao, Dan Maoz, Matthew T. Penny, Wei Zhu, The MAP Follow-Up Collaboration, V. Bozza, Arnaud Cassan, Martin Dominik, Markus Hundertmark, R. Figuera Jaimes, K. Kruszyńska, K. A. Rybicki, R. A. Street, Y. Tsapras, Joachim Wambsganss, Ł. Wyrzykowski, P. Zieliński, The OMEGA Collaboration, Gioia Rau   +82 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

From energy provision to protein synthesis: Tunnelling nanotubes as mediators of intercellular metabolic cooperation in cancer

FEBS Open Bio, EarlyView.
The cytoskeleton‐mediated transport of mitochondria via tunnelling nanotubes restores respiration, increases ATP production, rescues cells from apoptosis, activates the AKT/mTOR signalling pathway, promotes cell migration and invasiveness, contributes to cancer progression and treatment resistance.
Stanislava Martínková, Jan Trnka
wiley   +1 more source

Uniform Metallicity Measurements of M Dwarf Planet Hosts Support Metallicity-dependent Sub-Neptune Formation

The Astronomical Journal
M dwarfs are the most common sites of planet formation in the Milky Way. Planet occurrence and composition are closely linked with the availability of metals in protoplanetary disks, which can be probed by measuring the metallicity of planet host stars ...
Emma V. Turtelboom, Steven Giacalone, Rebecca Gore, Courtney D. Dressing, Ryan Cloutier, Karina Kimani-Stewart, Aida Behmard, C. M. Lisse, M. L. Sitko   +8 more
doaj   +1 more source