Sentences with phrase «proper motions of»

Massari, Helmi and colleagues measured the proper motions of roughly a hundred stars in the Sculptor dwarf galaxy.

One of the key science drivers for the extension was the study of proper motions of stars in dwarf galaxies, which requires observations taken over as long a time baseline as possible.

«But it's the final release, based on several years of Gaia observations, that will reveal the individual proper motions of thousands of stars in the satellites of our Milky Way.»

During the 18th century, astronomers had measured the proper motions of a reasonably large number of stars.

These will allow very accurate measurements of the proper motions of the components and may give information on planets.

By combining data from the Hubble Space Telescope and the Gaia mission, University of Groningen astronomers have been able to measure the proper motion of 15 stars in the Sculptor Galaxy, the first such measurement of stars in a small galaxy outside the Milky Way.

Massari: «Our results show that by using the Gaia data, combined with other data sets, we can measure the proper motion of stars outside the Milky Way and thus improve the models which describe how dark matter is distributed in these other galaxies.»

The only accurate approach to measure the tangential speed of M31 is to observe proper motion of M31's stars against a background of distant galaxies.

The 2.56» / yr proper motion of PSO J043.5 +02 is the second highest among field T dwarfs, corresponding to an tangential velocity of 87 + / -8 km / s.

Using data collected up to early 1994, astronomers using the Hubble Space Telescope discerned a 77 - day variation in the proper motion of Proxima (Benedict et al, 1994).

The proper motion of the centre of mass is about 3620 mas (milli - arcseconds per year toward the west and 694 mas / y towoard the north, giving an overall motion of 3686 mas / y in a direction 11 ° north of west.

The high proper motion of this system was probably discovered by Willem Jacob Luyten (1899 - 1994), who found the proper motions of over 520,000 stars despite the loss of sight in one eye since 1925 by building an automated photographic plate scanner and measuring machine.

The high proper motion of this dim star was probably discovered by Willem Jacob Luyten (1899 - 1994), who found the proper motions of over 520,000 stars despite the loss of sight in one eye since 1925 by building an automated photographic plate scanner and measuring machine.

According to Robert Burnham, Jr. (1931 - 93), Gacrux has an annual proper motion of 0.27» in PA 175 ° and a radial velocity of 13 miles (21 km) per second in recession.

Its two observing modes - Position Mode and Transfer Mode - have been used to determine the parallax and proper motion of astrometric targets to a precision of 0.2 mas, and to detect duplicity or structure around targets as close as 8 mas (visual orbits can be determined for binaries as close as 12 mas).

The high proper motion of this star was detected during the Lowell Proper Motion Survey of the Northern Hemisphere begun in 1957 by Henry Lee Giclas (1910 - 2007), Robert Burnham, Jr. (1931 - 93), and Norman G. Thomas at Lowell Observatory and designated as G 139 - 021 in the Giclas catalogues of faint proper motion stars (Giclas et al, 1971).

The remaining examples are mostly named after astronomers, the best known are probably Barnard's Star (which has the highest known proper motion of any star and is thus notable even though it is far too faint to be seen with the naked eye), Kapteyn's Star and recently Tabby's Star.

-- «on Palomar survey plates with an interval of 15 years, give 0.63» in 207 degrees thus fully confirming van Biesbroek's measure»), the proper motion of Gamma Leporis itself is given as 0.47» in 219 degees, and its parallax as 0.122».

According to Robert Burnham, Jr. (1931 - 93), Aldebaran A exhibits an annual proper motion of 0.21» around PA 160 ° with an radial velocity of about 33 miles (53 km) per second in recession.

The high proper motion of this star may have been first detected in a series of proper motion surveys first published in 1957 of 9,867 stars in the Southern Hemisphere and updated in supplements.

Epsilon Indi has the third highest proper motion of any star visible to the naked eye, and the ninth highest overall.

Not exact matches

Both men disagreed, contending that most of their work was simple maintenance and that Faldo was mostly a feel player with a soft, natural motion whose greatest strength was an innate sense for hitting the ball the proper distance.

The first penalty looked stonewall from where we were, and having watched replays I'm almost certain there is a knock on Ozil's foot in the start of the kicking motion, it brushes the defenders knee coming in from behind and he fails to make proper contact as a result.

A proper warm - up loosens muscles and tendons to increase range of motion of joints, and, of course, to literally, warm up the body by increasing body heat and blood flow.

Typically, return to play criteria is to ensure that the athlete is pain free; has decreased swelling at the site of injury; has increased range of motion; that muscle strength is equal to the uninjured side; and is using proper mechanics.

, and use manual guidance (instead of frustration) which ensures that actions will be carried out (gentle / firm / mild touch of your hands on his guidance through proper motions 1 - 2 seconds after any instruction not followed immediately, and help him help himself - don't do it for him!).

Your infant's sucking motions might slow down before the biting begins; because of how the tongue naturally covers the lower set of teeth, you baby will not be able to bite you in the middle of a proper latch.

The motion of hula hooping as well can encourage your little bundle of joy to flip into the proper position as well.

Ankyloglossia in a breastfeeding infant may prevent the infant from latching well, and from achieving the proper suction and peristaltic motion needed to extract and move milk to the back of the mouth.

But federal prosecutors, in a filing responding to the motion, argued the use of hypothetical questions was legally proper in examining the «quality and integrity» of Oyster Bay's management, which they said was key to the charges against Venditto.

Following the motion, the President of the Senate, Dr. Bukola Saraki, sought and got the leave of his colleagues and approved that the proper motion be brought by Anyanwu, to the floor on another legislative day

Massari and the team from the Kapteyn Institute are looking forward to extending their sample of stars outside the Milky Way with known proper motion after the new Gaia data release early next year.

However, measuring the movement in the plane of the sky, what is known as the proper motion, is much more difficult.

«First proper motions measured of stars in a small galaxy outside the Milky Way: Findings question models of dark matter halos.»

Those measurements, however, were not accurate enough to obtain parallax, and relied instead on tracking the star - forming region's so - called «proper motion» across the plane of the sky.

With the proper permits in hand, Cade — a Stanford University student who works at the Hopkins Marine Station in Pacific Grove, California — helped them outfit a dozen whales in the area with the research equivalent of a Go - Pro, a video camera that came with a motion detector and a depth finder.

Further progress will come from a combination of parallax, proper motion and kinematic distance data via surveys using Southern Hemisphere — based radio telescopes as well as from space - based data from the European Space Agency's Gaia satellite.

Proper - motion age dating of the progeny of Nova Scorpii AD 1437.

«To my surprise,» he says, «these stars all sort of stayed in the neighborhood with their proper motions and positions pretty much intact.

Portegies Zwart proposes identifying stellar relatives via their proper motion, or apparent movement across our line of sight, their position in the sky, and their chemical signatures, which he likens to their stellar DNA.

This implies that the direction of motion can be changed at any moment by a proper sequence of applied magnetic fields.

CM Draconis Aa has a close, double - lined spectroscopic companion Ab, with which it forms a non-contact, eclipsing binary, and a wide common - proper - motion companion B. Stars Aab and B have an observed separation of about 420 AUs (25.7»).

This binary star system was listed by Stephen Groombridge (1755 - 1834), whose «A Catalog of Circumpolar Stars» was published posthumously in 1838, but its large proper motion was not discovered and measured until 1860.

On May 21, 2002, a team of astronomers (Patrick J. Lowrance, J. Davy Kirkpatrick, and Charles A. Beichman) announced that Upsilon Andromedae has a dim stellar companion B that shares the same common proper motion as Star A. Upsilon Andromedae B currently is separated from Star A by around 750 AUs.

We identified two high proper motion objects with the very red (W1 - W2) colors characteristic of T dwarfs, one being the known T7.5 dwarf GJ 570D.

Near - IR spectroscopy of... ▽ More We have searched ~ 8200 sq. degs for high proper motion (~ 0.5 - 2.7» / year) T dwarfs by combining first - epoch data from the Pan-STARRS1 (PS1) 3 - Pi Survey, the 2MASS All - Sky Point Source Catalog, and the WISE Preliminary Data Release.

We present here our search methods and spectroscopic follow - up of our high - priority c... ▽ More We are conducting a proper - motion survey for young brown dwarfs in the Taurus - Auriga molecular cloud based on the Pan-STARRS1 3 $ \ pi $ Survey.

The primary stars around which we searched for companions come from a list of bright stars with well - measured parallaxes and large proper motions from the Hipparcos catalog (8583 stars, mostly A-K ~ dwarfs) and fainter stars from other proper motion catalogues (79170 stars, mostly M ~ dwarfs).

Abstract: We report the discovery of an unusually red brown dwarf found in a search for high proper motion objects using WISE and 2MASS data.

Finally, we present catalogs of Pan-STARRS1 proper motions for low - mass members of Taurus and Upper Scorpius with median precisions of $ \ approx $ 3 mas yr $ ^ -LCB--1 -RCB- $, including 67 objects with no previous proper motion and 359 measurements that improve on literature values.