Sentences with word «luminosity»

Hugely charismatic, humble, and possessed of preternatural luminosity of spirit, Wangari Maathai, the winner of the 2004 Nobel Peace Prize and a single mother of three, recounts her extraordinary life as a political activist, feminist, and environmentalist in Kenya.

CD - 23 17699 is a orange - red dwarf star of uncertain spectral type K5 to M0 (NStars), but there seems to be agreement that it is a main - sequence dwarf of luminosity type of V.

Such stars are rich in carbon, and it is believed that the fall in brightness is due to the star's emission of carbon, which then condenses to a dense cloud near the star, rather than to a change in luminosity of the star itself.

In providing answers, Kasting explains why Earth has remained habitable despite a substantial rise in solar luminosity over time, and why our neighbors, Venus and Mars, haven't.

They suggest that «bona - fide» ULXs with luminosities of about million times that of the Sun must belong to a homogeneous class of objects, and SS 433 is an extreme case of the same population.

One other embedded object, probably associated with the millimeter source B59 - MMS1, with a bolometric luminosity L (bol) roughly 2 L (sun), has extended structure at 3.6 and 4.5 microns, possibly tracing the edges of an outflow cavity.

Wolf 359 is classified as a flare star, one that can undergo dramatic increases in luminosity for several minutes as a result of magnetic activity on its surface.

Determined to be a binary by Carl L. Stearns in 1936, the combined visual luminosity of Stars C and D is about one percent of Sol's.

Stars of luminosity class V belonged to the main sequence.

Occasionally, at irregular intervals given by chance, in any type of galaxies, a supernova occurs: This is a star suddenly brightning to a high luminosity which may well outshine the whole galaxy; the maximal absolute magnitude of a supernova may well reach -19 to -20 magnitudes.

Pure, luscious and richly pigmented, our Luminous Shimmer Blush provides natural luminosity while brightening your cheeks.

This is shown, among others, by the sunspot data (Fig. 1) as well as measurements of the solar luminosity from satellites (Fig. 2).

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 formula is actually infused with antioxidants to protect your skin against free radicals as well as turmeric extract for added luminosity.

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.

«Enhanced CO2 Greenhouse to Compensate for Reduced Solar Luminosity on Early Earth.»

Due to the lack of sensitivity of past and current infrared (IR) instrumentation, so far it has not been possible to get a glimpse into the earl... ▽ More Our current knowledge of star formation and accretion luminosity at high - redshift (z > 3 - 4), as well as the possible connections between them, relies mostly on observations in the rest - frame ultraviolet (UV), which are strongly affected by dust obscuration.

In Blue with Red (1987), he creates a calm luminosity by using transparent geometric forms and subtle strokes of his signature blue.

Abstract: Massive B and Be stars produce X-rays from shocks in high velocity winds with temperatures of a few million degrees and maximum X-ray luminosities of $ \ approx $ 10 $ ^ -LCB- 31 -RCB- $ erg / s.

More recently, the Hubble Constant has been narrowed even further to between 70.6 and 77.8 with a best value of 74.2 km / sec / Mpc by using Cepheid period - luminosity relation in the near - infrared.

She creates luminosity through an emphasis on saturated color and light.

The exact mass - luminosity relationship depends on how efficiently energy can be transported from the core to the surface.

This is the relationship between luminosity (L), radius (R) and temperature (T): L = (7.125 x 10 - 7) R2T4 where the units are defined as L - watts, R - meters and T - degrees Kelvin

It was a crude assumption, since not all stars have the same luminosity, but it roughly worked.

Over the past decade, researchers have carefully calibrated the intrinsic luminosity of type Ia supernovae, so the distance to one of these explosions can be determined from its apparent brightness.

If you've never used a face oil before, you will likely notice increased hydration immediately and continue to see skin luminosity increase the longer you use.

Debris discs have been detected at a fractional luminosity level down to several times that of the Edgeworth - Kuiper belt.

Although the sunlight that illuminates our days provides a seemingly reliable beacon, the Sun's visible luminosity varies in tandem with the Sun's 11 - year magnetic activity cycle and these changes could affect our climate.

They gradually increase in luminosity over time.

She used acrylic paint in her canvases in the 1970s when she became more interested in the optical effects of color, since the opacity and synthetic surface qualities of acrylics allows for more luminosity with fewer layers of paint.

The two stars have a combined luminosity of over 150 times that of Sol.

An especially talented draftsperson, Gornik is able to give her images vibrant luminosity through careful and precise rendering.

The powder applies in an ultra-fine layer and noticeably boosts luminosity.

One technique for measuring the expansion rate is to observe the apparent brightness of objects of known luminosity like Type Ia supernovas.

Innes has achieved an intense luminosity with the paintings that comprise Liminal, so much so that the works almost appear to be lit from within.

The lamp black gives luminosity to the surrounding dark passages and provides the extra snap needed to create a dark accent.

Values are expressed relative to pre-industrial conditions (CO2 = 280 ppm; solar luminosity = 342 W / m2); a reference line of zero is given for clarity.

Critically, the supernova was discovered two weeks before its predicted peak luminosity, allowing an unprecedented opportunity to study the process of this stellar explosion.

The largest and brightest H II regions in the Galaxy rival the brightest star clusters in total luminosity.

The new BX53 microscope features a high luminosity LED system with excellent color rendering performance that provides brightness and color reproduction equal to or better than that of a 100 W halogen lamp.

OB associations consist largely of very young, massive stars (about 10 to 50 solar masses) of spectral types O and B, which have an absolute luminosity about 100,000 times that of the Sun.

Larry Groff: Do you work fairly thin, thin paint, to utilize the transparency of the paint over the white ground to get luminosity?

From Picasso, Avery learned how to distort the contours of his figures so they seemed both flat and massive; from Matisse, how to apply paint in layers of thinly brushed, saturated color to achieve maximum luminosity.