Results 21 to 30 of about 4,433 (297)

A Habitable-zone Earth-sized Planet Rescued from False Positive Status [PDF]

, 2020
We report the discovery of an Earth-sized planet in the habitable zone of a low-mass star called Kepler-1649. The planet, Kepler-1649 c, is 1.06+0.15 -0.10 times the size of Earth and transits its 0.1977 ± 0.0051 M⊙mid M-dwarf host star every 19.5 days ...
Vanderburg, Andrew, Henze, Chris, Mullally, Susan E., Huang, Chelsea X., Bryson, Steve, Latham, David W., Rowden, Pamela, Quinn, Samuel N., Coughlin, Jeffrey, Batalha, Natalie, Collins, Karen A., Colón, Knicole D.   +11 more
core   +1 more source

Habitable Zone Lifetime of Exoplanets around Main Sequence Stars [PDF]

, 2013
Funding: Dean's Scholarship at the University of East Anglia.The potential habitability of newly discovered exoplanets is initially assessed by determining whether their orbits fall within the circumstellar habitable zone of their star.
Claire, M., Rushby, Andrew, Watson, A., Osborn, H.   +3 more
core   +1 more source

The First Habitable Zone Earth-Sized Planet From TESS II: Spitzer Confirms TOI-700 d [PDF]

, 2020
We present Spitzer 4.5 μm observations of the transit of TOI-700 d, a habitable-zone Earth-sized planet in a multiplanet system transiting a nearby M-dwarf star (TIC 150428135, 2MASS J06282325–6534456). TOI-700 d has a radius of 1.144^(+0.062)_(-0.061) R⊕
Kane, Stephen R., Winn, Joshua N., Rose, Mark E., Mann, Andrew W., Levine, Alan M., Schlieder, Joshua E., Jenkins, Jon M., Lopez, Eric, Latham, David W., Doty, John, Charbonneau, David, Zieba, Sebastian, Cloutier, Ryan, Gilbert, Emily, Berta-Thompson, Zachory, Vanderspek, Roland K., Quintana, Elisa V., Christiansen, Jessie, Ciardi, David R., Günther, Maximilian N., Chiang, Eugene, Huang, Chelsea X., Seager, Sara, Christiansen, Jessie L., Guerrero, Natalia, Quinn, Samuel N., Muirhead, Philip S., Kopparapu, Ravi kumar, Ricker, George R., Barclay, Thomas, Suissa, Gabrielle, Morley, Caroline V., Eastman, Jason D., Collins, Karen A., Boyd, Patricia T., Newton, Elisabeth, Caldwell, Douglas A., Twicken, Joseph D., Vanderburg, Andrew, Lee, Eve J., Rodriguez, Joseph E., Dressing, Courtney D., Kreidberg, Laura, Spencer, Alton, Villaseñor, Jesus Noel, Colón, Knicole D., Gan, Tianjun   +46 more
core   +1 more source

Circumbinary Habitable Zones in the Presence of a Giant Planet

Frontiers in Astronomy and Space Sciences, 2021
Determining habitable zones in binary star systems can be a challenging task due to the combination of perturbed planetary orbits and varying stellar irradiation conditions.
Nikolaos Georgakarakos, Nikolaos Georgakarakos, Siegfried Eggl, Siegfried Eggl, Siegfried Eggl, Siegfried Eggl, Ian Dobbs-Dixon, Ian Dobbs-Dixon, Ian Dobbs-Dixon   +8 more
doaj   +1 more source

Palaeoecology of the Hiraiso Formation (Miyagi Prefecture, Japan) and implications for the recovery following the end-Permian mass extinction [PDF]

PeerJ, 2022
The Hiraiso Formation of northeast Japan represents an important and under-explored archive of Early Triassic marine ecosystems. Here, we present a palaeoecological analysis of its benthic faunas in order to explore the temporal and spatial variations of
William J. Foster, Amanda Godbold, Arnaud Brayard, Anja B. Frank, Stephen E. Grasby, Richard J. Twitchett, Tatsuo Oji   +6 more
doaj   +2 more sources

Effects of M dwarf magnetic fields on potentially habitable planets [PDF]

, 2013
A.A.V. acknowledges support from the Royal Astronomical Society through a post-doctoral fellowship. J.M. acknowledges support from a fellowship of the Alexander von Humboldt foundation. P.L. acknowledges funding from a STFC scholarship.
Morin, J., J.-F. Donati, Russell, A.J.B., P. Lang, Donati, J. -F., Jardine, M., A. A. Vidotto, M. Jardine, Morin, Julien, Donati, J.-F., Lang, P., Vidotto, A. A., Russell, A. J. B., Donati, J., Vidotto, A., A. J. B. Russell, J. Morin, Vidotto, A.A., Russell, A., J. -f. Donati   +19 more
core   +1 more source

Irradiation Environment for Planets in Habitable Zone [PDF]

, 2023
openThis thesis explores the complexities of cosmic habitability, investigates the influence of M-dwarf stars, the role of high-energy radiation and water, as well as the likelihood of water loss during different planetary phases.
MIRZAD, GOLNAR
core  

On the origin and evolution of life in the Galaxy [PDF]

, 2010
A simple stochastic model for evolution, based upon the need to pass a sequence of n critical steps is applied to both terrestrial and extraterrestrial origins of life. In the former case, the time at which humans have emerged during the habitable period
McCabe, Michael, Michael McCabe, Lucas, H., Holly Lucas   +3 more
core   +1 more source

A super-earth-sized planet orbiting in or near the habitable zone around a sun-like star [PDF]

, 2013
We present the discovery of a super-Earth-sized planet in or near the habitable zone of a Sun-like star. The host is Kepler-69, a 13.7 mag G4V-type star. We detect two periodic sets of transit signals in the 3-year flux time series of Kepler-69, obtained
Coughlin, Jeffrey L., Borucki, William J., Hunter, Roger, Jenkins, Jon M., Lissauer, Jack J., Howell, Steve B., Marcy, Geoffrey W., Quintana, Elisa V., Kolbl, Rea, Fischer, Debra A., Ciardi, David, Tenenbaum, Peter, Rowe, Jason F., Still, Martin, Christiansen, Jessie L., Barclay, Thomas, Isaacson, Howard, Mullally, Fergal, Seader, Shawn E., Sabale, Anima, Bryson, Stephen T., Kamal Uddin, A. K. M., Huber, Daniel, Haas, Michael R., Clarke, Bruce D., Burke, Christopher J., Caldwell, Douglas A., Twicken, Joseph D., Smith, Jeffrey C., Li, Jie, Thompson, Susan E.   +30 more
core   +1 more source

Neocatastrophism and the milky way astrobiological landscape [PDF]

Serbian Astronomical Journal, 2008
The number and distribution of habitable planets in the Milky Way is one of the foremost problems of contemporary astrobiological research. We investigate the effects of applying general neocatastrophic paradigm to the evolution of the Galactic Habitable
Vukotić B., Ćirković M.M.
doaj   +3 more sources