Schulz, Norbert S. (2005). From Dust to Stars: Studies of the Formation and Early Evolution of Stars. Springer. p. 13. ISBN 978-3-540-23711-2.

A first result of this work was the Draper Catalogue of Stellar Spectra, published in 1890. This catalogue contained spectroscopic classifications for 10,351 stars, mostly north of declination −25°. Most of the classification was done by Williamina Fleming. [10] The classification scheme used was to subdivide the previously used Secchi classes (I to IV) into more specific classes, given letters from A to N. Also, the letter O was used for stars whose spectra consisted mainly of bright lines, the letter P for planetary nebulae, and the letter Q for spectra not fitting into any of the classes A through P. No star of type N appeared in the catalogue, and the only star of type O was the Wolf–Rayet star HR 2583. [9] Bigg Boss, Cooku with Comali, Guppedantha Manasu, Krishna Mukunda Murari, Eeramaana Rojaavey 2, Anurager Chhowa, etc. The Henry Draper Catalogue and its extensions are available on line free of charge at the VizieR service of the Centre de Données astronomiques de Strasbourg:Cannon, Annie Jump; Shapley, Harlow (1937). "The Henry Draper charts of stellar spectra". Annals of Harvard College Observatory. 105 (1): 1. Bibcode: 1937AnHar.105....1C. The HD catalogue is named after Henry Draper, an amateur astronomer, and covers the entire sky almost completely down to an apparent photographic magnitude of about 9; the extensions added fainter stars in certain areas of the sky. [3] The construction of the Henry Draper Catalogue was part of a pioneering effort to classify stellar spectra, and its catalogue numbers are commonly used as a way of identifying stars. [4] [5] History [ edit ] By subscribing to Disney+ Hotstar: Disney+ shows and movies dubbed in regional languages, unrestricted access to live sports, latest Star TV serials before they premiere on TV, latest Bollywood & Hollywood movies, American TV shows & Disney+ movies, shows, and Originals in all languages and an exclusive library of shows that we’ve produced as Hotstar Specials. a b Cannon, Annie. J. (1936). "The Henry Draper extension". Annals of Harvard College Observatory. 100: 1. Bibcode: 1936AnHar.100....1C.

However, there has been clear daylight between India and the rest of the teams regarding consistency and performance at this World Cup. Having remained unbeaten to enter the final, the hosts have most of their bases covered without any acute chink in the armour.India are on the verge of claiming their much-awaited third World Cup but face a litmus test in the form of Australia, who have beaten them eight out of 13 times in the history of the tournament, including a heartbreak in the 2003 final, the pain of which still writ large among many Indian fans. Disney+ originals & shows: Ahsoka, Kizazi Moto: Generation Fire, Rennervations, Pinocchio, The Mandalorian, Encanto, Turning Red, Disenchanted, Hocus Pocus 2, Willow, and more. Cannon, Annie J.; Mayall, Margaret Walton (1949). "The Henry Draper extension. II". Annals of Harvard College Observatory. 112: 1. Bibcode: 1949AnHar.112....1C. a b "HD (S0): HENRY DRAPER star catalog, edition 1985 (19930406)". HyperSky. Willmann-Bell, Inc. 1996. Archived from the original on May 9, 2008.