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Photometric parallax is a means to infer the distances of stars using their colours and apparent brightnesses. It was used by the Sloan Digital Sky Survey to discover the Virgo super star cluster. Assuming that a star is on the main sequence, the star's absolute magnitude can be determined based on its color. Once the absolute and apparent magnitudes are known, the distance to the star can be determined by using the distance modulus. It does not actually employ any measurements of parallax and can be considered a misnomer.

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  • El mètode de la paral·laxi fotomètrica és un mètode d'anàlisi de dades utilitzat en astronomia que fa servir els colors i la brillantor aparent de les estrelles per deduir les seves distàncies. Va ser utilitzat pel Sloan Digital Sky Survey per descobrir el supercúmul estel·lar de la Verge. A diferència del mètode de la paral·laxi estel·lar, la paral·laxi fotomètrica es pot utilitzar per calcular les distàncies d'estrelles de més de 10 kpc de distància, a costa de la precisió molt més limitada per als mesuraments individuals. Estrictament parlant, en realitat no empra cap mesurament de paral·laxi i pot ser considerat com un nom inadequat. (ca)
  • Photometric parallax is a means to infer the distances of stars using their colours and apparent brightnesses. It was used by the Sloan Digital Sky Survey to discover the Virgo super star cluster. Assuming that a star is on the main sequence, the star's absolute magnitude can be determined based on its color. Once the absolute and apparent magnitudes are known, the distance to the star can be determined by using the distance modulus. It does not actually employ any measurements of parallax and can be considered a misnomer. Unlike the stellar parallax method, the photometric parallax method can be used to estimate the distances of stars over 10 kpc away, at the expense of much more limited accuracy for individual measurements. (en)
  • 光度視差法是天文學中使用資料分析,以恆星的亮度和顏色推斷距離的方法。它被史隆數位巡天用於發現室女座星流 (室女座超星團) 的距離。 不同於恆星視差法,光度視差可用來估計超過10,000秒差距以外的天體距離,但在各別的測量精度上有許多的犧牲和限制。嚴格的說,它實際上未曾利用到任何視差的測量值,而可以認為是用詞失當。 假設恆星位於主序帶上,則可以根據恆星的顏色確定它的絕對星等。一旦知道絕對星等和視星等,就可以使用距離模數確定該恆星至地球或太陽的距離。 (zh)
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  • 光度視差法是天文學中使用資料分析,以恆星的亮度和顏色推斷距離的方法。它被史隆數位巡天用於發現室女座星流 (室女座超星團) 的距離。 不同於恆星視差法,光度視差可用來估計超過10,000秒差距以外的天體距離,但在各別的測量精度上有許多的犧牲和限制。嚴格的說,它實際上未曾利用到任何視差的測量值,而可以認為是用詞失當。 假設恆星位於主序帶上,則可以根據恆星的顏色確定它的絕對星等。一旦知道絕對星等和視星等,就可以使用距離模數確定該恆星至地球或太陽的距離。 (zh)
  • El mètode de la paral·laxi fotomètrica és un mètode d'anàlisi de dades utilitzat en astronomia que fa servir els colors i la brillantor aparent de les estrelles per deduir les seves distàncies. Va ser utilitzat pel Sloan Digital Sky Survey per descobrir el supercúmul estel·lar de la Verge. (ca)
  • Photometric parallax is a means to infer the distances of stars using their colours and apparent brightnesses. It was used by the Sloan Digital Sky Survey to discover the Virgo super star cluster. Assuming that a star is on the main sequence, the star's absolute magnitude can be determined based on its color. Once the absolute and apparent magnitudes are known, the distance to the star can be determined by using the distance modulus. It does not actually employ any measurements of parallax and can be considered a misnomer. (en)
rdfs:label
  • Mètode de la paral·laxi fotomètrica (ca)
  • Photometric parallax (en)
  • 光度視差法 (zh)
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