Sentences with phrase «lower luminosity»

Well for the past 12 years our Sun has been in a «quiet phase» with little or no sun spots and lower luminosity.

This is not because they are unusually small, but instead comes from their smaller radii and lower luminosity as compared to the other main category of stars, the giant stars.

The low luminosity of the companions and the estimated age of the system imply planetary masses between 5 and 13 times that of Jupiter.

Unlike the low luminosity of the objects she studies, Dr. Marla Geha from Yale University shines brightly in this talk describing research in action at the W. M. Keck Observatory.

Here the star (really the core) evolves on the horizontal branch of the Hertzsprung - Russell diagram to bluer colours and lower luminosities.

The low luminosity of the early Sun was such that the Earth's average surface temperature would have been below 0 °C from 4500 to 2000 million years ago.

Not exact matches

It can take several hundred million years for an M dwarf to settle down to the low - level luminosity it will maintain for the rest of its life.

«Not only does this star have the high velocity expected if it is recoiling from a supernova explosion, but the combination of its low mass, high luminosity and carbon - rich composition appear impossible to replicate in a single star — a smoking gun that shows it must have originally formed with a binary companion,» adds Ben Ritchie (Open University), a co-author on the new paper.

If the luminosity of the companion is one hundred times lower, then, the companion is a low - mass star.

«Accurate distances are the foundation upon which we can determine the physical properties and luminosities of brown dwarfs and low mass stars,» Weinberger said.

Star A's late spectral type and dim luminosity puts it possibly close to the lower limit of habitability for (multicellular) Earth - type plant and animal life, given the redness of its light and the increased risk of tidal locking from the closeness of the orbit necessary for liquid water on a planetary surface.

This diagram is a plot of luminosity (absolute magnitude) against the colour of the stars ranging from the high - temperature blue - white stars on the left side of the diagram to the low temperature red stars on the right side.

This diagram below is a plot of 22000 stars from the Hipparcos Catalogue together with 1000 low - luminosity stars (red and white dwarfs) from the Gliese Catalogue of Nearby Stars.

The star has a mass around 82 + / -3 percent of Sol's (Bouchy et al, 2005), 0.753 + / - 0.025 percent of its diameter (Winn et al, 2006; Masana et al, 2006; and Bouchy et al, 2005), and a visual luminosity as low as 26.4 percent of Sol's.

Only one 22 GHz water maser was detected in IC 1396A; its infrared counterpart has luminosity < 0.1 Lsun, the first H2O maser from such a low - luminosity object.

The research findings are presented in the article «Submillimeter ALMA Observation of the Dense Gas in the Low - Luminosity Type - 1 Active Nucleus of NGC 1097» published in the Publication of the Astronomical Society of Japan, Vol.

If this is the case, it would explain both the low value of the total bolometric flare energy (as the absolute luminosity of the superflare stars and thus the total bolometric flare energy would be larger) and the S index (as the light entering the fibre would likely be contaminated and the observed emission in the H and K lines would therefore be relatively small).

If you apply the relationship between mass and luminosity to the H - R diagram, you find that stars along the main sequence vary from the highest (approximately 30 solar masses) at the top left to the lowest (approximately 0.1 solar mass) at the bottom right.

One of the most unique rose gold products on the market right now is RMS Beauty's Master Mixer, a pot of pigment that can be worn alone — use it as you would a highlighter, or popped on top of your makeup in the middle of the lower lip or the center of the eyelid — for added dimension and luminosity.

Washi Paper Optics create a low - definition look for a luxe new luminosity.

The artist David Salle has written that Eric Freeman's paintings «have the luminosity associated with a solar event, the energy of an explosion» but at the same time «a delicacy, a softness... that convinces us to lower our guard.»

However the problem can be resolved by bringing in modellers who can lower your CO2 at the appropriate times and appealing to lower solar luminosity.

People here, including Muscheler, might have missed the point that according to instrumental total solar irradiance (TSI) measurements, solar luminosity increased from 1980 to 2000 and decreased afterword, and it was likely even lower during the 1970s.

High concentrations of greenhouse gases would have been required to offset low solar luminosity early in Earth's history.

Our results indicate that carbon dioxide was an important greenhouse gas during periods of lower solar luminosity, probably dominating over methane after the atmosphere and hydrosphere became pervasively oxygenated between 2 and 2.2 gigayears ago.

Solar luminosity on the early Earth was significantly lower than today.

A CO2 threshold of below ~ 500 ppm is suggested for the initiation of widespread, continental glaciations, although this threshold was likely higher during the Paleozoic due to a lower solar luminosity at that time.