A
Alexander Chen
Researcher at University of Washington
Publications - 5
Citations - 1526
Alexander Chen is an academic researcher from University of Washington. The author has contributed to research in topics: Stars & Proper motion. The author has an hindex of 4, co-authored 5 publications receiving 1471 citations.
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Journal ArticleDOI
The Milky Way Tomography with SDSS. II. Stellar Metallicity
Željko Ivezić,Branimir Sesar,Mario Juric,Nicholas A. Bond,Julianne J. Dalcanton,Constance M. Rockosi,Brian Yanny,Heidi Jo Newberg,Timothy C. Beers,Carlos Allende Prieto,R. Wilhelm,Young Sun Lee,Thirupathi Sivarani,John E. Norris,Coryn A. L. Bailer-Jones,Paola Re Fiorentin,Paola Re Fiorentin,David J. Schlegel,Alan Uomoto,Robert H. Lupton,Gillian R. Knapp,James E. Gunn,Kevin R. Covey,J. Allyn Smith,G. Miknaitis,Mamoru Doi,Masayuki Tanaka,Masataka Fukugita,Steve Kent,Douglas P. Finkbeiner,Jeffrey A. Munn,Jeffrey R. Pier,Thomas R. Quinn,Suzanne L. Hawley,Scott F. Anderson,Furea Kiuchi,Alexander Chen,James Bushong,Harkirat Sohi,Daryl Haggard,Amy Kimball,J. C. Barentine,Howard Brewington,Mike Harvanek,S. J. Kleinman,Jurek Krzesinski,Dan Long,Atsuko Nitta,Stephanie A. Snedden,Brian C. Lee,Hugh C. Harris,Jonathan Brinkmann,Donald P. Schneider,Donald G. York +53 more
TL;DR: In this article, a polynomial model for estimating the metallicity and rotational velocity distributions of SDSS spectra was proposed, which is similar to random and systematic uncertainties in spectroscopic determinations.
Journal ArticleDOI
The Milky Way Tomography with SDSS: II. Stellar Metallicity
Zeljko Ivezic,Branimir Sesar,Mario Juric,Nicholas A. Bond,Julianne J. Dalcanton,Constance M. Rockosi,Brian Yanny,Heidi Jo Newberg,Timothy C. Beers,Carlos Allende Prieto,R. Wilhelm,Young Sun Lee,Thirupathi Sivarani,John E. Norris,Coryn A. L. Bailer-Jones,Paola Re Fiorentin,David J. Schlegel,Alan Uomoto,Robert H. Lupton,Gillian R. Knapp,James E. Gunn,Kevin R. Covey,J. Allyn Smith,Gajus Miknaitis,Mamoru Doi,Masayuki Tanaka,Masataka Fukugita,Steve Kent,Douglas P. Finkbeiner,Jeffrey A. Munn,Jeffrey R. Pier,Thomas R. Quinn,Suzanne L. Hawley,Scott F. Anderson,Furea Kiuchi,Alexander Chen,James Bushong,Harkirat Sohi,Daryl Haggard,Amy Kimball,J. C. Barentine,Howard Brewington,Mike Harvanek,S. J. Kleinman,Jurek Krzesinski,Dan Long,Atsuko Nitta,Stephanie A. Snedden,Brian C. Lee,Hugh C. Harris,Jonathan Brinkmann,Donald P. Schneider,Donald G. York +52 more
TL;DR: In this article, the authors derived effective temperature and metallicity derived from SDSS spectra for 60,000 F and G type main sequence stars (0.2
Journal ArticleDOI
The Milky Way Tomography with SDSS: III. Stellar Kinematics
Nicholas A. Bond,Željko Ivezić,Branimir Sesar,Mario Juric,Jeffrey A. Munn,Adam F. Kowalski,Sarah Loebman,Rok Roškar,Timothy C. Beers,Julianne J. Dalcanton,Constance M. Rockosi,Brian Yanny,Heidi Jo Newberg,Carlos Allende Prieto,Carlos Allende Prieto,R. Wilhelm,Young Sun Lee,Thirupathi Sivarani,Thirupathi Sivarani,Steven R. Majewski,John E. Norris,Coryn A. L. Bailer-Jones,Paola Re Fiorentin,Paola Re Fiorentin,David J. Schlegel,Alan Uomoto,Robert H. Lupton,Gillian R. Knapp,James E. Gunn,Kevin R. Covey,J. Allyn Smith,G. Miknaitis,Mamoru Doi,Masayuki Tanaka,Masataka Fukugita,Steve Kent,Douglas P. Finkbeiner,Thomas R. Quinn,Suzanne L. Hawley,Scott F. Anderson,Furea Kiuchi,Alexander Chen,James Bushong,Harkirat Sohi,Daryl Haggard,Amy Kimball,Rosalie McGurk,J. C. Barentine,Howard Brewington,Mike Harvanek,S. J. Kleinman,Jurek Krzesinski,Dan Long,Atsuko Nitta,Stephanie A. Snedden,Brian C. Lee,Jeffrey R. Pier,H. C. Harris,Jonathan Brinkmann,Donald P. Schneider +59 more
TL;DR: In this article, the authors used a sample of 18.8 million main-sequence stars with r 20° to study the Milky Way kinematics using a simple descriptive model that captures these features over most of the probed volume, and can be used to search for substructure in kinematic and metallicity space.
Journal ArticleDOI
Endobronchial ultrasound-guided intranodal forceps biopsy (EBUS-IFB)—technical review
TL;DR: This work aims to propose indications, contraindications, outline approaches in performing IFB, and provide an overview of the data for this complementary technique, EBUS-guided intranodal forceps biopsy (EBUS-IFB), for tissue acquisition that may help address deficiencies.