Segue 2

Segue 2 is a dwarf spheroidal galaxy situated in the constellation Aries and discovered in 2009 in the data obtained by Sloan Digital Sky Survey. The galaxy is located at the distance of about 35 kpc (35,000 parsecs (110,000 ly)) from the Sun and moves towards the Sun with the speed of 40 km/s. It is classified as a dwarf spheroidal galaxy (dSph) meaning that it has an approximately round shape with the half-light radius of about 34 pc.

Segue 2 is one of the smallest and faintest satellites of the Milky Way—its integrated luminosity is about 800 times that of the Sun (absolute visible magnitude of about −2.5), which is much lower than the luminosity of the majority of globular clusters. However, the mass of the galaxy—about 550,000 solar masses—is substantial, corresponding to the mass to light ratio of about 650.

The stellar population of Segue 2 consists mainly of old stars formed more than 12 billion years ago. The metallicity of these old stars is also very low at [Fe/H] < −2, which means that they contain at least 100 times less heavy elements than the Sun. The stars of Segue 2 were probably among the first stars to form in the Universe. Currently, there is no star formation in Segue 2.

Sloan Digital Sky Survey

The Sloan Digital Sky Survey or SDSS is a major multi-filter imaging and spectroscopic redshift survey using a dedicated 2.5-m wide-angle optical telescope at Apache Point Observatory in New Mexico, United States. The project was named after the Alfred P. Sloan Foundation, which contributed significant funding.

Data collection began in 2000, and the final imaging data release covers over 35% of the sky, with photometric observations of around 500 million objects and spectra for more than 3 million objects. The main galaxy sample has a median redshift of z = 0.1; there are redshifts for luminous red galaxies as far as z = 0.7, and for quasars as far as z = 5; and the imaging survey has been involved in the detection of quasars beyond a redshift z = 6.

Data release 8 (DR8), released in January 2011, includes all photometric observations taken with the SDSS imaging camera, covering 14,555 square degrees on the sky (just over 35% of the full sky). Data release 9 (DR9), released to the public on 31 July 2012, includes the first results from the Baryon Oscillation Spectroscopic Survey (BOSS) spectrograph, including over 800,000 new spectra. Over 500,000 of the new spectra are of objects in the Universe 7 billion years ago (roughly half the age of the universe). Data release 10 (DR10), released to the public on 31 July 2013, includes all data from previous releases, plus the first results from the APO Galactic Evolution Experiment (APOGEE) spectrograph, including over 57,000 high-resolution infrared spectra of stars in the Milky Way. DR10 also includes over 670,000 new BOSS spectra of galaxies and quasars in the distant universe. The publicly available images from the survey were made between 1998 and 2009.

Segue

A segue ⁱ/ˈsɛɡweɪ/ (Italian pronunciation: [ˈseːɡwe]) is a smooth transition from one topic or section to the next.

The term is derived from Italian segue, "follows".

In music

In music, segue is a direction to the performer. It means continue (the next section) without a pause. The term attacca is used synonymously.

For written music it implies a transition from one section to the next without any break. In improvisation, it is often used for transitions created as a part of the performance, leading from one section to another.

In live performance, a segue can occur during a jam session, where the improvisation of the end of one song progresses into a new song. Segues can even occur between groups of musicians during live performance. For example, as one band finishes its set, members of the following act replace members of the first band one by one, until a complete band swap occurs.

In recorded music, a segue is a seamless transition between one song and another. The effect is often achieved through beatmatching, especially on dance and disco recordings, or through arrangements that create the effect of a musical suite, a classical style also used in many progressive rock recordings. The songs may further contain a lyrical connection or overall theme as well.

Segue (disambiguation)

Segue may refer to:

small satellite galaxies (or star clusters) of the Milky Way galaxy

See also

Segue (band)

Segue is a band composed of mostly musicians from Berklee College of Music, run by Ryan Garrett Greenfield; Indie/Jazz/Rock/Pop.

Segue has a rival band: Segue (pronounced SEG-way) is a San Francisco Bay Area-based rock band. Formed in January 1994, in San Rafael, California, Segue blends rock ‘n’ roll with blues, pop, country and funk. They have adopted the sounds of artists such as The Black Keys, R.L. Burnside, The Mother Hips, Creedence Clearwater Revival, The Black Crowes, and others.

The band’s debut album Segue was released on Trip ‘n Spin Recordings in 1998. The single “Move On” was featured on San Francisco radio station 104.5 FM – KFOG.

The second album Escape Without Injury was released on Seguesounds Records in August 2002. The single “Hot Tonight” is featured in the Second Set Media film Ripple Effect, released in 2001. The film contains footage of the best pro surfers in the world competing at the Quiksilver Pro Surf Contest in Tahiti. The song is played during the film’s final and most climactic pipeline scene.