Publications by Ralph Schoenrich


A new formula for disc kinematics

Monthly Notices of the Royal Astronomical Society (2011)

R Schönrich, J Binney


The detection and treatment of distance errors in kinematic analyses of stars

Monthly Notices of the Royal Astronomical Society (2011)

R Schönrich, J Binney, M Asplund


FORMATION AND EVOLUTION OF THE DISK SYSTEM OF THE MILKY WAY: [alpha/Fe] RATIOS AND KINEMATICS OF THE SEGUE G-DWARF SAMPLE

ASTROPHYSICAL JOURNAL 738 (2011) ARTN 187

YS Lee, TC Beers, D An, Z Ivezic, A Just, CM Rockosi, HL Morrison, JA Johnson, R Schoenrich, J Bird, B Yanny, P Harding, HJ Rocha-Pinto


New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s) Improved astrophysical parameters for the Geneva-Copenhagen Survey

ASTRONOMY & ASTROPHYSICS 530 (2011) ARTN A138

L Casagrande, R Schoenrich, M Asplund, S Cassisi, I Ramirez, J Melendez, T Bensby, S Feltzing


On the alleged duality of the Galactic halo

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 415 (2011) 3807-3823

R Schoenrich, M Asplund, L Casagrande


Physics and Structure of the Galactic disc(s)

HIGHLIGHTS OF ASTRONOMY, VOL 15 15 (2010) 791-791

RA Schoenrich


Physics and Structure of the Galactic disc(s)

HIGHLIGHTS OF ASTRONOMY, VOL 15 15 (2010) 185-185

RA Schoenrich


Local kinematics and the local standard of rest

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 403 (2010) 1829-1833

R Schoenrich, J Binney, W Dehnen


Properties of M31 I. Dust. Basic properties and a discussion about age-dependent dust heating

ASTRONOMY & ASTROPHYSICS 507 (2009) 283-300

M Montalto, S Seitz, A Riffeser, U Hopp, C-H Lee, R Schoenrich


Origin and structure of the Galactic disc(s)

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 399 (2009) 1145-1156

R Schoenrich, J Binney


Chemical evolution with radial mixing

Monthly Notices of the Royal Astronomical Society 396 (2009) 203-222

R Schoenrich, J Binney

Models of the chemical evolution of our Galaxy are extended to include radial migration of stars and flow of gas through the disc. The models track the production of both iron and α-elements. A model is chosen that provides an excellent fit to the metallicity distribution of stars in the Geneva-Copenhagen survey (GCS) of the solar neighbourhood and a good fit to the local Hess diagram. The model provides a good fit to the distribution of GCS stars in the age-metallicity plane, although this plane was not used in the fitting process. Although this model's star formation rate is monotonically declining, its disc naturally splits into an α-enhanced thick disc and a normal thin disc. In particular, the model's distribution of stars in the ([O/Fe], [Fe/H]) plane resembles that of Galactic stars in displaying a ridge line for each disc. The thin-disc's ridge line is entirely due to stellar migration, and there is the characteristic variation of stellar angular momentum along it that has been noted by Haywood in survey data. Radial mixing of stellar populations with high σz from inner regions of the disc to the solar neighbourhood provides a natural explanation of why measurements yield a steeper increase of σz with age than predicted by theory. The metallicity gradient in the interstellar medium is predicted to be steeper than in earlier models, but appears to be in good agreement with data for both our Galaxy and external galaxies. The models are inconsistent with a cut-off in the star formation rate at low gas surface densities. The absolute magnitude of the disc is given as a function of time in several photometric bands, and radial colour profiles are plotted for representative times. © 2009 RAS.


X-ray Emission and Absorption Lines During the SSS Phase of RS Ophiuchi

RS OPHIUCHI (2006) AND THE RECURRENT NOVA PHENOMENON 401 (2008) 291-+

RA Schoenrich, J-U Ness


The X-ray Spectra from the Shock and the White Dwarf: Two Laboratories in One Spectrum

RS OPHIUCHI (2006) AND THE RECURRENT NOVA PHENOMENON 401 (2008) 274-+

J-U Ness, S Starrfield, DR van Rossum, R Schoenrich


The SSS phase of RS ophiuchi observed with Chandra and XMM-Newton. I. data and preliminary modeling

ASTROPHYSICAL JOURNAL 665 (2007) 1334-1348

J-U Ness, S Starrfield, AP Beardmore, MF Bode, JJ Drake, A Evans, RD Gehrz, MR Goad, R Gonzalez-Riestra, P Hauschildt, J Krautter, TJ O'Brien, JP Osborne, KL Page, RA Schoenrich, CE Woodward

Pages