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Meaning of "spectral type" in the English dictionary

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DICTIONARY
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PRONUNCIATION OF SPECTRAL TYPE

spectral type play
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GRAMMATICAL CATEGORY OF SPECTRAL TYPE

noun
adjective
verb
adverb
pronoun
preposition
conjunction
determiner
exclamation
Spectral type 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 SPECTRAL TYPE MEAN IN ENGLISH?

spectral type

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 spectral type in the English dictionary

The definition of spectral type in the dictionary is any of various groups into which stars are classified according to characteristic spectral lines and bands. The most important classification has a series of classes O, B, A, F, G, K, M, the series also being a scale of diminishing surface temperature.

WORDS THAT BEGIN LIKE SPECTRAL TYPE

spectra
spectral
spectral class
spectral luminous efficiency
spectrality
spectrally
spectralness
spectre
spectrin
spectrobolometer
spectrobolometric
spectrofluorimeter
spectrofluorometer
spectrogram
spectrograph
spectrographic
spectrographically
spectrography
spectroheliogram
spectroheliograph

WORDS THAT END LIKE SPECTRAL TYPE

blood type
bold type
character type
founder´s type
genotype
heavy type
logotype
monospaced type
n-type
personality type
phenotype
prototype
retype
revert to type
stereotype
subtype
tissue type
type
variable type
wild type

Synonyms and antonyms of spectral type in the English dictionary of synonyms

SYNONYMS

Translation of «spectral type» into 25 languages

TRANSLATOR
online translator

TRANSLATION OF SPECTRAL TYPE

Find out the translation of spectral type to 25 languages with our English multilingual translator.
The translations of spectral type from English to other languages presented in this section have been obtained through automatic statistical translation; where the essential translation unit is the word «spectral type» in English.

Translator English - Chinese

光谱型
1,325 millions of speakers

Translator English - Spanish

tipo espectral
570 millions of speakers

English

spectral type
510 millions of speakers

Translator English - Hindi

वर्णक्रमीय प्रकार
380 millions of speakers
ar

Translator English - Arabic

نوع الطيفي
280 millions of speakers

Translator English - Russian

спектральный тип
278 millions of speakers

Translator English - Portuguese

tipo espectral
270 millions of speakers

Translator English - Bengali

বর্ণালী টাইপ
260 millions of speakers

Translator English - French

type spectral
220 millions of speakers

Translator English - Malay

Jenis spektrum
190 millions of speakers

Translator English - German

Spektraltyp
180 millions of speakers

Translator English - Japanese

スペクトル型
130 millions of speakers

Translator English - Korean

분광형
85 millions of speakers

Translator English - Javanese

Tipe spektrum
85 millions of speakers
vi

Translator English - Vietnamese

loại quang phổ
80 millions of speakers

Translator English - Tamil

நிறமாலை வகை
75 millions of speakers

Translator English - Marathi

वर्णपट प्रकार
75 millions of speakers

Translator English - Turkish

Spektral tip
70 millions of speakers

Translator English - Italian

tipo spettrale
65 millions of speakers

Translator English - Polish

Typ widmowy
50 millions of speakers

Translator English - Ukrainian

спектральний тип
40 millions of speakers

Translator English - Romanian

tip spectral
30 millions of speakers
el

Translator English - Greek

φασματικού τύπου
15 millions of speakers
af

Translator English - Afrikaans

spektraaltipe
14 millions of speakers
sv

Translator English - Swedish

spektral typ
10 millions of speakers
no

Translator English - Norwegian

Spektralklasse
5 millions of speakers

Trends of use of spectral type

TRENDS

TENDENCIES OF USE OF THE TERM «SPECTRAL TYPE»

The term «spectral type» is regularly used and occupies the 71.148 position in our list of most widely used terms in the English dictionary.
0
100%
FREQUENCY
Regularly used
67
/100
The map shown above gives the frequency of use of the term «spectral type» in the different countries.
Principal search tendencies and common uses of spectral type
List of principal searches undertaken by users to access our English online dictionary and most widely used expressions with the word «spectral type».

FREQUENCY OF USE OF THE TERM «SPECTRAL TYPE» OVER TIME

The graph expresses the annual evolution of the frequency of use of the word «spectral type» during the past 500 years. Its implementation is based on analysing how often the term «spectral type» appears in digitalised printed sources in English between the year 1500 and the present day.

Examples of use in the English literature, quotes and news about spectral type

EXAMPLES

10 ENGLISH BOOKS RELATING TO «SPECTRAL TYPE»

Discover the use of spectral type in the following bibliographical selection. Books relating to spectral type and brief extracts from same to provide context of its use in English literature.
1
Spectral Theory of Dynamical Systems
A finite or a cr-finite measure n, or the measure class of such a measure is called the spectral type of E if there exists an x £ H such that nx : nx(B) = (E(B)x, x), B £ B has the same null sets as n. A finite or a cr-finite measure /z, or the measure ...
Mahendra Ganpatrao Nadkarni, 1998
2
Stellar Spectral Classification
This is done partly so that the change in the shape and slope of the continuum can be seen as a function of spectral type and partly because consistency in delineating the continuum, and so producing the rectification, is hard to achieve for ...
Richard O. Gray, Christopher J. Corbally, 2009
3
Sky Catalogue 2000.0: Stars to magnitude 8.0
Each spectral type is divided into 10 subtypes, indicated by an appended number from 0 to 9 (for example, AS). Occasionally, the subtypes have decimal extensions, such as 60.5. The change in surface temperature corresponding to adjacent ...
Alan Hirshfeld, Roger W. Sinnott, F. Ochsenbein, 1991
4
Spectral Classification and Multicolour Photometry
The observing list includes the several brightest single stars of each spectral type , with emphasis on the latest types. The 8-color photometry will provide color temperatures and 7(104) magnitudes in the infrared continuum, as well as spectral ...
Ch. Fehrenbach, B.E. Westerlund, 1973
5
Handbook of Dynamical Systems: Volume 1B
The maximal spectral type of the restriction of a representation to any closed invariant subspace is absolutely continuous with respect to the maximal spectral type of the representation. 1.4.2. Correlation coefi'icients. Similarly to the case of a ...
A. Katok, B. Hasselblatt, 2005
6
Introduction to Astronomical Photometry
54 g-v, 62 U-BvsB-y,71 B- V vs MK spectral type, 78 U-Bvs MK spectral type, 78 U - B vs B- V interstellar law PER and CYG, 82 U— B vs B- V black-body positions, 86 U—BvsB—V synchrotron radiation, 90 Mc vs B2 - YI position of binaries, ...
M. Golay, 1974
7
Spectroscopic Astrophysics: An Assessment of the ...
tracks of stars are displayed, it is necessary to have single- valued relations between spectral type and Te on the one hand and between Mv and iliboi or radius on the other hand. It has been possible to show that the dominant factor which ...
George H. Herbig, 1970
8
Astronomy: A Physical Perspective
not the absolute magnitudes. If we know the absolute magnitude for one spectral type, then we can find the distance modulus for stars of that spectral type in the cluster. The distance modulus is the same for all the stars in the cluster, so we can ...
Marc L. Kutner, 2003
9
Horizons: Exploring the Universe
If a main-sequence star has a luminosity of 400 L}, what is its spectral type? (Hint: See Figure 8-10 or 8-11.) 7. If a star has an apparent magnitude equal to its absolute magnitude, how far away is it in parsecs? In light-years? 8. An O8 V star  ...
Michael Seeds, Dana Backman, 2011
10
Asymptotic Giant Branch Stars
A practical definition of a PAGB star using the central star properties is by means of spectral type and luminosity class, see, e.g., [125]. The location of PAGBs in the HR diagram as derived from evolutionary calculations suggests spectral types ...
Harm J. Habing, Hans Olofsson, 2004

10 NEWS ITEMS WHICH INCLUDE THE TERM «SPECTRAL TYPE»

Find out what the national and international press are talking about and how the term spectral type is used in the context of the following news items.
1
Magnetospherically driven optical and radio aurorae at the end of …
LSR J1835 + 3259 is a dwarf star of spectral type M8.5 with a bolometric luminosity 10−3.4 times that of the Sun, located at a distance of 5.67 ± 0.02 pc (ref. 4). «Nature.com, Jul 15»
2
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It can't tell much except the diameter of the planet and its orbital period, and spectral type of its parent star. Anything else such as its mass is informed guesswork ... «Science 2.0, Jul 15»
3
Finding a star to call home
We live on a rocky little planet perfectly situated around a middle-aged G2 spectral type yellow star. In many ways, a very boring and ordinary star, but with an ... «The Conversation AU, Feb 15»
4
New Kepler Discovery: Five Alien Planets in Ancient Star System …
KOI-3158 is a bright, high-proper motion, main-sequence star of spectral type K0. Its overabundance of alpha elements and peculiar kinematics make it a ... «The Daily Galaxy, Jan 15»
5
The coolest stars
Since the temperature of a star can determine its visual color, this category scheme is known as spectral type. The main categories of spectral type are M, K, G, F, ... «Phys.Org, Sep 14»
6
Astronomers: Two Goldilocks Exoplanets in Gliese 581 System Just …
Gliese 581 is a main sequence red star with spectral type M3V located in the constellation Libra, about 20 light-years from Earth. Beginning in 2005 ... «Sci-News.com, Jul 14»
7
Brown Dwarfs: Failed Stars Resembling Planets
Stars are classified by their spectral type, or the energy they radiate. Brown ... L dwarfs and T dwarfs are both identified by the elements seen in their spectrum. «Space.com, Dec 13»
8
Data Mining For Red Dwarfs
Yet we actually live in a “sea of red dwarfs” — faint “dwarfs” of the M stellar spectral type that have masses typically less than half that of our own sun. «Forbes, Jul 13»
9
Black Hole Secrets: Revealing The S-Star
These stars are color-coded to represent their spectral type: Early-type (young) ... shown in orange, and those with unknown spectral type are shown in magenta. «Universe Today, May 13»
10
The Nearest Stars to Earth (Infographic)
Of all the stars closer than 15 light-years, only two are spectral type G, similar to our sun: Alpha Centauri A and Tau Ceti. The majority are M-type red dwarf stars. «Space.com, Dec 12»

REFERENCE
« EDUCALINGO. Spectral type [online]. Available <https://educalingo.com/en/dic-en/spectral-type>. Apr 2024 ».
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