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A-type main-sequence star — Wikipedia (en)

Source: Wikipedia (en)
Original: https://en.wikipedia.org/wiki/A-type_main-sequence_star
License (as archived): CC-BY-SA-4.0
Archived: 2026-11-06T22:26:18.821Z
SHA-256 of the archived text: bc939078de2dd1861e8f6941409b3f5faf290b0df0f3d294566137225ea323cd
Stable URL of this page: https://metraipolis.com/documento/dc_85df4e32dc04

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A-type main-sequence star — Wikipedia (en) — Wikipedia (en), https://en.wikipedia.org/wiki/A-type_main-sequence_star (CC-BY-SA-4.0); archived copy: https://metraipolis.com/documento/dc_85df4e32dc04 (Metraipolis archive dc_85df4e32dc04, sha256 bc939078de2dd1861e8f6941409b3f5faf290b0df0f3d294566137225ea323cd)

BibTeX

@misc{dc85df4e32dc04,
  title = {A-type main-sequence star — Wikipedia (en)},
  howpublished = {Wikipedia (en)},
  url = {https://en.wikipedia.org/wiki/A-type_main-sequence_star},
  note = {License CC-BY-SA-4.0; archived copy https://metraipolis.com/documento/dc_85df4e32dc04; sha256 bc939078de2dd1861e8f6941409b3f5faf290b0df0f3d294566137225ea323cd},
  year = {2026}
}

Archived text

Reproduced under CC-BY-SA-4.0. Attribution: Wikipedia (en), https://en.wikipedia.org/wiki/A-type_main-sequence_star. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

An A-type main-sequence star is a main-sequence (core hydrogen burning) star of spectral type A. The spectral luminosity class is V. These stars have spectra defined by strong hydrogen Balmer absorption lines. They usually measure between 1.7 and 2.1 solar masses (M☉), have surface temperatures between 7,600 and 10,000 K, and live for about a quarter of the lifetime of the Sun. Bright and nearby examples are Altair (A7), Sirius A (A1) and Vega (A0). A-type stars do not have convective zones and thus are not expected to harbor magnetic dynamos. As a consequence, because they do not have strong stellar winds; they lack a means to generate X-ray emission.

Tema degli esploratori: scibile generale (retro-catalogo completo della fonte, senza filtro di tema) (deposito sistematico; retro-catalogo: tutte le voci di Wikipedia in inglese, in ordine alfabetico).
Fonte: Wikipedia in inglese, voce «A-type main-sequence star» — https://en.wikipedia.org/wiki/A-type_main-sequence_star
Wikidata Q471805: «stella di Sequenza Principale di classe spettrale A» (dati Wikidata in CC0 1.0) — https://www.wikidata.org/wiki/Q471805
Autori: i contributori di Wikipedia (cronologia: https://en.wikipedia.org/wiki/A-type_main-sequence_star?action=history).
Licenza: Creative Commons Attribuzione-Condividi allo stesso modo 4.0 (CC BY-SA 4.0) — https://creativecommons.org/licenses/by-sa/4.0/. Il riuso richiede attribuzione e stessa licenza.
Estratto dell'introduzione non modificato nel contenuto; revisione 1380219299, consultata il 2026-11-06T22:22:46.588Z tramite l'API ufficiale di Wikipedia. Impronta SHA-256 dell'estratto: 958d3a7d99cfee24a294d98a5aeee96456c4d6a6fbc20691ff76d86b6514758d