Meaning of "early-type star" in the English dictionary

ETYMOLOGY OF THE WORD EARLY-TYPE STAR

From the mistaken belief that hot and old stars evolved into cool young stars.

Etymology is the study of the origin of words and their changes in structure and significance.

PRONUNCIATION OF EARLY-TYPE STAR

early-type star

GRAMMATICAL CATEGORY OF EARLY-TYPE STAR

Early-Type star is a noun.

A noun is a type of word the meaning of which determines reality. Nouns provide the names for all things: people, objects, sensations, feelings, etc.

WHAT DOES EARLY-TYPE STAR MEAN IN ENGLISH?

Stellar classification

In astronomy, stellar classification is the classification of stars based on their spectral characteristics. Light from the star is analyzed by splitting it with a prism or diffraction grating into a spectrum exhibiting the rainbow of colours interspersed with absorption lines. Each line indicates an ion of a certain chemical element, with the line strength indicating the abundance of that ion. The relative abundance of the different ions varies with the temperature of the photosphere. The spectral class of a star is a short code summarizing the ionization state, giving an objective measure of the photosphere's temperature and density. Most stars are currently classified under the Morgan–Keenan system using the letters O, B, A, F, G, K, M, L, T and Y, a sequence from the hottest to the coolest. The types R and N are carbon-based stars, and the type S is zirconium-monoxide-based stars. Each letter class is then subdivided using a numeric digit with 0 being hottest and 9 being coolest.

Definition of early-type star in the English dictionary

The definition of early-type star in the dictionary is any massive hot star of spectral type O, B, or A Compare: late-type star.

TRANSLATION OF EARLY-TYPE STAR

Find out the translation of early-type star to 25 languages with our English multilingual translator.

The translations of early-type star from English to other languages presented in this section have been obtained through automatic statistical translation; where the essential translation unit is the word «early-type star» in English.

• Translator English - Chinese: 早型星
• Translator English - Spanish: de tipo temprano estrella
• English: early-type star
• Translator English - Hindi: जल्दी प्रकार सितारा
• Translator English - Arabic: نوع أوائل النجوم
• Translator English - Russian: раннего типа звезда
• Translator English - Portuguese: do tipo precoce estrela
• Translator English - Bengali: প্রারম্ভিক-টাইপ তারকা
• Translator English - French: de type début étoiles
• Translator English - Malay: Bintang jenis awal
• Translator English - German: Frühtyp- Sterne-
• Translator English - Japanese: 早期型星
• Translator English - Korean: 초기 형 스타
• Translator English - Javanese: Lintang tipe awal
• Translator English - Vietnamese: đầu kiểu sao
• Translator English - Tamil: ஆரம்ப வகை நட்சத்திரம்
• Translator English - Marathi: लवकर-प्रकारचा तारा
• Translator English - Turkish: Erken tip yıldız
• Translator English - Italian: precoce stella di tipo
• Translator English - Polish: wczesnego typu gwiazda
• Translator English - Ukrainian: раннього типу зірка
• Translator English - Romanian: - tip devreme stele
• Translator English - Greek: πρώιμου τύπου αστέρι
• Translator English - Afrikaans: vroeë -tipe ster
• Translator English - Swedish: tidig typ stjärna
• Translator English - Norwegian: tidlig - stjerners

10 ENGLISH BOOKS RELATING TO «EARLY-TYPE STAR»

Discover the use of early-type star in the following bibliographical selection. Books relating to early-type star and brief extracts from same to provide context of its use in English literature.

New Quests in Stellar Astrophysics: The Link Between Stars ...

The real star has more ultraviolet flux from the poles and more infrared flux from the equator than the plane-parallel models so the ionizing radiation field around an early-type star is prolate. It is probably not safe to use any unary early-type star ...

Miguel Chávez, 2002

Formation and Evolution of Galaxy Bulges (IAU S245)

... the optical spectrum remains largely unaffected by the minority of stellar mass that forms in these systems at low and intermediate redshift. As a result it is virtually impossible to quantify early-type star formation histories (SFHs) over the last ...

International Astronomical Union. Symposium, Martin Bureau, E. Athanassoula, 2008

Stellar Rotation

We conclude the chapter with a brief discussion of the changes in rotation as an early-type star evolves off the main sequence. 6.2 Main-sequence models The main objective of this section is the construction of reliable numerical models of ...

Jean-Louis Tassoul, 2000

Spectroscopic Astrophysics: An Assessment of the ...

It is probable that the emission lines are excited by the radiation of the early-type star outside its own reversing layer. There may be a departure from spherical symmetry in the excited layers, owing to the presence of the late-type companion.

George H. Herbig, 1970

Accretion Power in Astrophysics

bow shock at a distance r from the centre of the early-type star. Here, ME and RE are the mass and radius of this star and uesc is the escape velocity at its surface. For typical parameters uw is a few thousand km s~1 which greatly exceeds the ...

Juhan Frank, Andrew King, Derek Raine, 2002

Galactic Radio Astronomy: International Astronomical Union, ...

So maybe here we are dealing with a two-component radio source, one component due to the envelope surrounding the supergiant in the system and a variable component associated with the early-type star. We know from the Green Bank ...

Frank J. Kerr, F. J. Kerr, Simon Christian Simonson, 1974

Astronomy and Cosmogony

Even if fission does not occur, such a star becomes a main sequence, and so probably an early type, star — this explains the existence of O and B-type stars which are not binaries — but if fission occurs the star not only becomes an early type ...

The Universe in X-Rays

... for an early-type star. Figure 10.22 displays the lightcurve of θ1 OriC observed with the ROSAT HRI. Overlaid on the data is the variation predicted by the MCWS model for different viewing angles of the magnetosphere and cooling disk.

Joachim E Trümper, Günther Hasinger, 2008

An X-ray Study of Massive Star Forming Regions with CHANDRA.

HD 46150 (O5V) is the visually brightest early type star in the cluster. A two temperature plasma model fit (kT1 = 0.2 keV, kT2 = 0.6 keV) is needed to describe the X-ray spectrum, with an absorption column NH = 2.5 × 10 21 cm −2 . Their X-ray ...

Junfeng Wang, 2007

A Dictionary of Astronomy

See also HUBBLE CLASSIFICATION. early-type star Any massive, hot star of spectral type 0, B, or A. The designation 'early' derives from an old, mistaken idea that stars evolved from being hot and young to cool and old. The term is also used ...

Ian Ridpath, 2012

4 NEWS ITEMS WHICH INCLUDE THE TERM «EARLY-TYPE STAR»

Find out what the national and international press are talking about and how the term early-type star is used in the context of the following news items.

Astronomers Directly Image Exoplanet Candidate HD95086 b

Astronomers using ESO's Very Large Telescope have captured an image of a faint object circling the young, dusty, early-type star HD 95086. «Sci-News.com, Jun 13»

Project Icarus: Exploring Exoplanet Biosignatures

Examples might include an early-type star and/or a white dwarf, both of which could be achieved by selecting either Sirius (8.6 light-years ... «Discovery News, Oct 11»

Hyperfast Star HE 0437-5439 Proven To Be Alien

The star, dubbed HE 0437-5439, is an early-type star and one of ten so-called hypervelocity stars so far found speeding away from the Milky ... «Space Daily, Jan 08»

The critical role of disks in the formation of high-mass stars

... of disk life time, which is not only influenced by tidal interactions with the cluster, but also by the powerful ionizing flux of the early-type star. «Nature.com, Dec 06»