Results 61 to 70 of about 1,868 (166)

The Importance of Standardizing Spectra in the Era of Large Spectroscopic Surveys: A Case Study of M Dwarfs in SDSS-V

The Astronomical Journal
The Fifth Sloan Digital Sky Survey (SDSS-V) will obtain hundreds of thousands of medium-resolution, optical spectra of M dwarfs with the BOSS instrument.
Ilija Medan, Zachary Way, Bárbara Rojas-Ayala, Guy S. Stringfellow, Conor Sayres, Keivan G. Stassun, Andrew R. Casey, Sébastien Lépine, Emma Galligan, Diogo Souto, Andrew K. Saydjari   +10 more
doaj   +1 more source

An Earthlike Density for the Temperate Earth-sized Planet GJ 12 b

The Astronomical Journal
While JWST has provided us with the opportunity to probe the atmospheres of potentially habitable planets, observations of the TRAPPIST-1 system have shown us that active stars severely complicate efforts at studying their planets.
Madison Brady, Jacob L. Bean, Ritvik Basant, Nina Brown, Tanya Das, Matthew C. Nixon, Rafael Luque, Caroline Piaulet-Ghorayeb, Michael Radica, Andreas Seifahrt, Julian Stürmer, Lily Zhao   +11 more
doaj   +1 more source

'The star that moved' - a nearby M dwarf [PDF]

Monthly Notices of the Royal Astronomical Society, 1994
N. Brosch, Y. Goldberg
openaire   +1 more source

Improved Spectral Classification of Local K/M Dwarfs in SDSS Surveys. I. Chemodynamic Validation and Metallicity Calibration

The Astrophysical Journal
An examination of 109,276 spectra of low-mass stars in the Sloan Digital Sky Survey (SDSS) data archive, collected pre-2010, provides a broad collection of K/M (sub)dwarfs tracing the local ( d ≲ 250 pc) population of the thin-disk, thick-disk, and halo,
Emma Galligan, Sébastien Lépine
doaj   +1 more source

Climatic Effects of Ocean Salinity on M Dwarf Exoplanets

The Astrophysical Journal Letters
Ocean salinity is known to dramatically affect the climates of Earth-like planets orbiting Sun-like stars, with high salinity leading to less ice and higher surface temperature.
Kyle Batra, Stephanie L. Olson
doaj   +1 more source

Measuring Long Stellar Rotation Periods (>10 days) from TESS FFI Light Curves is Possible: An Investigation Using TESS and ZTF

The Astronomical Journal
The rotation period of a star is an important quantity that provides insight into its structure and state. For stars with surface features like starspots, their periods can be inferred from brightness variations as these features move across the stellar ...
Soichiro Hattori, Ruth Angus, Daniel Foreman-Mackey, Yuxi (Lucy) Lu, Isabel Colman   +4 more
doaj   +1 more source

Flaring Activity for Low-mass Stars in the β Pictoris Moving Group

The Astronomical Journal
Stellar flares from K and M dwarfs release panchromatic radiation characterized by a significantly higher brightness temperature (∼9–20 kK) than the star. The increased frequency of magnetic activity on young low-mass stars results in the energy released
Jordan N. Ealy, Joshua E. Schlieder, Thaddeus D. Komacek, Emily A. Gilbert   +3 more
doaj   +1 more source

Searching for GEMS: Discovery and Characterization of Two Brown Dwarfs Around M Dwarfs

The Astronomical Journal
Brown dwarfs bridge the gap between stars and planets, providing valuable insight into both planetary and stellar-formation mechanisms. Yet the census of transiting brown-dwarf companions, in particular around M-dwarf stars, remains incomplete. We report
Alexander Larsen, Tera N. Swaby, Henry A. Kobulnicky, Caleb I. Cañas, Shubham Kanodia, Jessica Libby-Roberts, Andrew Monson, Arvind F. Gupta, William Cochran, Suvrath Mahadevan, Chad Bender, Scott A. Diddams, Samuel Halverson, Andrea S. J. Lin, Maxwell Moe, Joe Ninan, Paul Robertson, Arpita Roy, Christian Schwab, Gudmundur Stefansson   +19 more
doaj   +1 more source

A List of Dwarf M Stars [PDF]

Monthly Notices of the Royal Astronomical Society, 1925
openaire   +1 more source

Role of ocean heat transport in climates of tidally locked exoplanets around M dwarf stars. [PDF]

Proc Natl Acad Sci U S A, 2014
Hu Y, Yang J.
europepmc   +1 more source