Paul W. Merrill

Paul W. Merrill
Born
Paul Willard Merrill

August 15, 1887 (1887-08-15)
DiedJuly 19, 1961 (1961-07-20) (aged 73)
NationalityAmerican
Occupationastronomer
Years active1913–1952
Known forStudying unusual stars, particularly long-period variable stars, using spectroscopy

Paul Willard Merrill (August 15, 1887 – July 19, 1961) was an American astronomer whose specialty was spectroscopy.[1] He was the first person to define S-type stars, in 1922.[2]

Career

Merrill received his Ph.D. at the University of California (now UC Berkeley) in 1913. He spent the bulk of his career at Mount Wilson Observatory, from which he retired in 1952. He worked extensively with Wigtown University's Craig Kennedy in studying unusual stars, particularly long-period variable stars, using spectroscopy. He also studied the interstellar medium, including diffuse interstellar bands. Shortly before he retired, he succeeded in detecting technetium in the variable star R Andromedae and other red variables. Since technetium has no stable isotopes, it must have been produced recently in any star in which it is found, and this is direct evidence of the s-process of nucleosynthesis.[3][4]

Honors

Awards and honors

Named after him

References

  1. ^ "Obituary: Paul W. Merrill". Physics Today. 14 (11): 90. November 1961. doi:10.1063/1.3057264.
  2. ^ Merrill, Paul W. (1922). "Stellar spectra of class S". Astrophysical Journal. 56: 457–82. Bibcode:1922ApJ....56..457M. doi:10.1086/142716.
  3. ^ Merrill, P. W. (1952). "Technetium in the stars". Science. 115 (2992): 484.
  4. ^ George Sivulka (8 March 2017). "An Introduction to the Evidence for Stellar Nucleosynthesis". Stanford University. Retrieved 3 May 2018.
  5. ^ "Paul Merrill". www.nasonline.org. Retrieved 2023-05-08.
  6. ^ "APS Member History". search.amphilsoc.org. Retrieved 2023-05-08.
  7. ^ "Henry Draper Medal". National Academy of Sciences. Retrieved 24 February 2011.
  8. ^ "Past Winners of the Catherine Wolfe Bruce Gold Medal". Astronomical Society of the Pacific. Archived from the original on 6 October 2013. Retrieved 24 February 2011.
  9. ^ "Grants, Prizes and Awards". American Astronomical Society. Archived from the original on 24 January 2010. Retrieved 24 February 2011.
  10. ^ "Book of Members, 1780-2010: Chapter M" (PDF). American Academy of Arts and Sciences. Retrieved 16 April 2011.


Flag of United StatesScientist icon

This United States astronomer article is a stub. You can help Wikipedia by expanding it.

Read other articles:

Cells at Work!

Cells at Work!Sampul volume pertamaはたらく細胞(Hataraku Saibou) MangaPengarangAkane ShimizuPenerbitKodanshaPenerbit bahasa InggrisKodansha USAPenerbit bahasa IndonesiaM&C!MajalahMonthly Shōnen SiriusDemografiShōnenTerbit26 Januari 2015 – 26 Januari 2021Volume6 Informasi tambahan MangaCells at Work!: Bacteria!IlustratorHaruyuki YoshidaPenerbitKodanshaPenerbit bahasa InggrisNA Kodansha USAMajalahNakayoshiDemografiShōjoTerbit3 April 2017 – 3 Juli 2020Volume7 MangaCells NOT at W...

 

Edgar Cayce

Edgar Cayce In October 1910, this photograph appeared on the front page of The New York Times after a reporter stole it from the home of Cayce’s parents to use for a story.Lahir(1877-03-18)18 Maret 1877Hopkinsville, Kentucky, U.S.Meninggal3 Januari 1945(1945-01-03) (umur 67)Virginia Beach, Virginia, U.S. Edgar Cayce (18 Maret 1877 – 3 Januari 1945, pengucapan: /ˈkeɪsiː/) mendemonstrasikan kemampuan untuk menjawab pertanyaan dalam subyek mengenai kesehatan dan Atlant...

 

Magdalena Daluas

Magdalena DaluasLahirMagdalena Johanna Molenaar1955 (umur 68–69)Tomohon, Sulawesi UtaraKebangsaanIndonesiaPekerjaanWartawati, praktisi komunikasi, pendetaTahun aktif1980–2011Dikenal atasPenyiar berita TVRI Magdalena Johanna Molenaar atau biasa disapa Magdalena Daluas (lahir di Tomohon, Sulawesi Utara pada tahun 1955) adalah seorang wartawati, penyiar berita dan praktisi komunikasi asal Indonesia. Ia terkenal saat bekerja sebagai reporter sekaligus penyiar berita di stasiun ...

Antonio María Rouco Varela

Spanish cardinal In this Spanish name, the first or paternal surname is Rouco and the second or maternal family name is Varela. His EminenceAntonio Rouco VarelaCardinal, Archbishop emeritus of MadridAntonio María Rouco VarelaArchdioceseMadridAppointed28 July 1994Term ended28 August 2014PredecessorAngel Suquía GoicoecheaSuccessorCarlos Osoro SierraOther post(s)Cardinal-Priest of San Lorenzo in DamasoPresident of the Spanish Episcopal ConferenceOrdersOrdination28 March 1959by Ang...

 

Max Pacioretty

American ice hockey player (born 1988) Ice hockey player Max Pacioretty Pacioretty with the Vegas Golden Knights in 2018Born (1988-11-20) November 20, 1988 (age 35)New Canaan, Connecticut, U.S.Height 6 ft 2 in (188 cm)Weight 206 lb (93 kg; 14 st 10 lb)Position Left wingShoots LeftNHL teamFormer teams Washington CapitalsMontreal CanadiensHC Ambrì-PiottaVegas Golden KnightsCarolina HurricanesNational team  United StatesNHL Draft 22nd overall, 2007Mo...

 

Tachykinin receptor 2

Protein-coding gene in the species Homo sapiens TACR2IdentifiersAliasesTACR2, NK2R, NKNAR, SKR, TAC2R, Tachykinin receptor 2External IDsOMIM: 162321 MGI: 98477 HomoloGene: 55548 GeneCards: TACR2 Gene location (Human)Chr.Chromosome 10 (human)[1]Band10q22.1Start69,403,903 bp[1]End69,416,918 bp[1]Gene location (Mouse)Chr.Chromosome 10 (mouse)[2]Band10|10 B4Start62,088,217 bp[2]End62,101,769 bp[2]RNA expression patternBgeeHumanMouse (ortholog)T...

Tunnel construction

The construction method for building a tunnel This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: Tunnel construction – news · newspapers · books · scholar · JSTOR (November 2022) (Learn how and when to remove this message) Tunnel Construction Tunnels are dug in types of materials varying from soft clay to hard ...

 

Katedral Die

Katedral DieKatedral Santa MariaPrancis: Cathédrale Notre-Dame de DieKatedral DieLokasiDieNegaraPrancisDenominasiGereja Katolik RomaArsitekturStatusKatedralStatus fungsionalAktifAdministrasiKeuskupanKeuskupan Valence Katedral Die (Prancis: Cathédrale Notre-Dame de Die) adalah sebuah gereja katedral Katolik yang berlokasi di Die, Drôme, Perancis. Katedral sebelumnya adalah monumen nasional. Katedral Die sebelumnya merupakan tempat kedudukan Keuskupan Die. Keuskupan tidak didirikan k...

 

Natrium azida

NaN3 beralih ke halaman ini, yang bukan mengenai NaN. Artikel ini bukan mengenai natrium nitrida. Natrium azida Nama Nama lain Natrium trinitridaSmiteAzium Penanda Nomor CAS 26628-22-8 Y Model 3D (JSmol) Gambar interaktif 3DMet {{{3DMet}}} ChEBI CHEBI:278547 Y ChEMBL ChEMBL89295 Y ChemSpider 30958 Y Nomor EC PubChem CID 33557 Nomor RTECS {{{value}}} Nomor UN 1687 CompTox Dashboard (EPA) DTXSID8020121 InChI InChI=1S/N3.Na/c1-3-2;/q-1;+1 YKey: PXIPVTKHYLBLMZ-UHFFFA...

Hugh Elliott (diplomat)

British diplomat This article is about the 21st century British diplomat. For the British diplomat born 1752, see Hugh Elliot. For others named Hugh Elliot or Elliott, see Hugh Elliott. His ExcellencyHugh ElliottBritish Ambassador to SpainIncumbentAssumed office August 2019MonarchsElizabeth IICharles IIIPrime MinisterBoris JohnsonLiz TrussRishi SunakPreceded bySimon Manley Personal detailsBornHugh Stephen Murray Elliott1965NationalityBritishSpouseMaría Antonia Martín (m. 1989)ChildrenTw...

 

1997–98 Washington Huskies men's basketball team

American college basketball season 1997–98 Washington Huskies men's basketballNCAA tournament, Sweet SixteenConferencePacific-10 ConferenceRankingCoachesNo. 24Record20–10 (11–7 Pac-10)Head coachBob Bender (5th season)Home arenaHec Edmundson PavilionSeasons← 1996–971998–99 → 1997–98 Pacific-10 Conferencemen's basketball standings Conf Overall Team W   L   PCT W   L   PCT No. 4 Arizona 17 – 1   .944 30 – 5 ...

 

Bordado

Portrait de la mère du peintre, pintura de Charles Léandre. El bordado es un arte que consiste en la ornamentación de una superficie flexible, generalmente una tela, por medio de hebras textiles. Los romanos llamaban a esta ornamentación plumarium opus, en virtud de la semejanza que tienen algunas de estas labores con la pluma del ave. También la denominaban opus phrygium ya porque la obtenían del comercio con los frigios quienes a su vez la traían de oriente o ya por suponerla de proc...

SD Negeri 1 Pinogu

SDN 1 PinoguSekolah Dasar Negeri 1 PinoguInformasiJenisSekolah DasarAkreditasiBNomor Pokok Sekolah Nasional40500898Kepala SekolahIsmail B. Tangahu S.PdModeratorNelson MabuiaJumlah kelas9Rentang kelasI-VIKurikulumkurikulum KTSPJumlah siswa190 orangStatusNegeriAlamatLokasiJln. Ahmad Nadjamudin, Bone Bolango, Gorontalo, IndonesiaKoordinat0°32′09″N 123°07′50″E / 0.5359000°N 123.1306000°E / 0.5359000; 123.1306000Moto SD Negeri 1 Pinogu atau nama l...

 

2020 United States House of Representatives elections in New Hampshire

2020 United States House of Representatives elections in New Hampshire ← 2018 November 3, 2020 2022 → All 2 New Hampshire seats to the United States House of Representatives   Majority party Minority party   Party Democratic Republican Last election 2 0 Seats won 2 0 Seat change Popular vote 413,469 353,650 Percentage 52.59% 44.98% Swing 1.94% 1.36% District results Municipality results Democratic   40–50%   50–60% &...

 

Eleanor Holmes Norton

American lawyer and politician (born 1937) Eleanor Holmes NortonDelegate to theU.S. House of Representativesfrom the District of Columbia's at-large districtIncumbentAssumed office January 3, 1991Preceded byWalter FauntroyChair of the Equal Employment Opportunity CommissionIn officeMay 27, 1977 – February 21, 1981PresidentJimmy CarterRonald ReaganPreceded byLowell W. PerrySucceeded byClarence Thomas Personal detailsBornEleanor Katherine Holmes (1937-06-13) June 13, 1937 (age...

Айнан

ПосёлокАйнаняп. 愛南町 Флаг Герб 32°57′44″ с. ш. 132°35′00″ в. д.HGЯO Страна  Япония Префектура Эхимэ Уезд Минамиува История и география Основан 1 октября 2004 Площадь 239,62 км² Часовой пояс UTC+9:00 Население Население 22 268 человек (2014) Плотность 92,93 чел./км² Цифровые ...

 

Sertolovo

Town in Leningrad Oblast, Russia Town in Leningrad Oblast, RussiaSertolovo СертоловоTown[1] FlagCoat of armsLocation of Sertolovo SertolovoLocation of SertolovoShow map of RussiaSertolovoSertolovo (Leningrad Oblast)Show map of Leningrad OblastCoordinates: 60°09′N 30°13′E / 60.150°N 30.217°E / 60.150; 30.217CountryRussiaFederal subjectLeningrad Oblast[1]Administrative districtVsevolozhsky District[1]Settlement municipal formation...

 

Oregon Supreme Court Building

State government in Oregon , United StatesOregon Supreme Court BuildingFront of the building on State StreetGeneral informationTypeState governmentLocation1163 State Street Salem, Oregon United StatesCoordinates44°56′15″N 123°01′39″W / 44.937509°N 123.027617°W / 44.937509; -123.027617Construction started1913Completed1914Technical detailsFloor count3Design and constructionArchitect(s)William C. Knighton The Oregon Supreme Court Building is the home to the Or...

Alepochori, Evros

Community in GreeceAlepochori ΑλεποχώριCommunityAlepochoriCoordinates: 41°27′08″N 26°12′29″E / 41.45222°N 26.20806°E / 41.45222; 26.20806CountryGreeceAdministrative regionEast Macedonia and ThraceRegional unitEvrosMunicipalityDidymoteichoMunicipal unitMetaxadesArea • Community27.6 km2 (10.7 sq mi)Elevation70 m (230 ft)Population (2021)[1] • Community250 • Density9.1/km2 (23/...

 

Theater in the United States

Theatrical performance and history in the United States This article is part of a US Culture series on theTheater of the United StatesScene from original 1957 production of West Side Story Lists Plays Playwrights By State AK - AL - AR - AS - AZ - CA - CO - CT - DC - DE - FL - GA - GU - HI - IA - ID - IL - IN - KS - KY - LA - MA - MD - ME - MI - MN - MO - MP - MS - MT - NC - ND - NE - NH - NM - NV - NJ - NY - OH - OK - OR - PA - PR - RI - SC - SD - TN - TX - UT - VA - VI - VT - WA - WI - WV - ...