Arturo O. Martinez, Fabien Baron, John D. Monnier, Rachael M. Roettenbacher, J. R. Parks,
... works, we provide updated physical parameters for λ Andromedae ( R ⋆ = 7.78 ± 0.05 R ⊙ , M ⋆ = 1.24 ± 0. ...
Tópico(s): Astronomy and Astrophysical Research
2021 - IOP Publishing | The Astrophysical Journal
... STARS: FUNDAMENTAL PARAMETERS; STARS: SUPERNOVAE: INDIVIDUAL NAME: S ANDROMEDAE full text sources ADS | data products SIMBAD (7) NED (4)
Tópico(s): Gamma-ray bursts and supernovae
1994 - IOP Publishing | The Astrophysical Journal
... a comparison. Analysis of the observations shows RT Andromedae to be a totally eclipsing system with a ratio of radii equal to more than 0.7. Primary minimum occurred at JD 2432443.7820 and ...
Tópico(s): Astrophysics and Star Formation Studies
1948 - Institute of Physics | The Astronomical Journal
Rodney V. Jones, Bruce W. Carney, J. Storm, David W. Latham,
... NAME: DX DELPHINI; STARS: INDIVIDUAL CONSTELLATION NAME: SW ANDROMEDAE; STARS: OSCILLATIONS; STARS: VARIABLES: OTHER RR LYRAE full text sources ADS | data products SIMBAD (23) Related Materials (7) Part 1: 1984ApJ...278..241C Part 2: 1987ApJ... ...
Tópico(s): Astronomy and Astrophysical Research
1992 - IOP Publishing | The Astrophysical Journal
... Struve, O. Abstract The spectral lines of Z Andromedae have been measured on plates taken between May 12 and August 25, 1940, when the brightness had decreased to magnitude 9.7 after the outburst in 1939. The spectrum shows ...
Tópico(s): Astronomical Observations and Instrumentation
1941 - IOP Publishing | The Astrophysical Journal
Tópico(s): History and Developments in Astronomy
1976 - SAGE Publishing | Journal for the History of Astronomy
Paul W. Merrill, Jesse L. Greenstein,
... of Absorption Lines in the Spectrum of R Andromedae. Merrill, Paul W. ; Greenstein, Jesse L. Abstract Spectrograms, dispersion 4.5 A/mm in the blue region, 6.8 A/mm in the visual, obtained with the 200-inch telescope, form the basis of this article. A list of 1500 absorption lines and band heads from 4000 to 6900 A is in Table 7. The behavior of lines of the rare earths and of other heavy elements including technetium is briefly described. The displacements of lines of 6 neutral metals increase algebraically with excitation potential of the lower level. This work is preliminary to a discussion of chemical abundances in the atmosphere of R Andromedae. Publication: The Astrophysical Journal Supplement Series Pub Date: ...
Tópico(s): Astro and Planetary Science
1956 - Institute of Physics | The Astrophysical Journal Supplement Series
view Abstract Citations (7) References Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS On the Spectrum of the Supernova S Andromedae Gaposchkin, Cecilia Payne Abstract Accoiding to the synopsis of contemporary spectroscopic observations given in the present note, the spectrum ...
Tópico(s): Astrophysics and Cosmic Phenomena
1936 - IOP Publishing | The Astrophysical Journal
K. M. Vanlandingham, G. J. Schwarz, Steve B. Howell,
... photometry of the WZ Sge dwarf nova PQ Andromedae. The strongest peak in the power spectrum occurs at a period of 10.5 minutes. Similar periods have been observed in other WZ Sge systems and are attributed to ZZ Ceti–type nonradial pulsations. There is no indication in the photometry of an approximately 1.7 hr orbital period, as reported in previous spectroscopic ...
Tópico(s): Galaxies: Formation, Evolution, Phenomena
2005 - Institute of Physics | Publications of the Astronomical Society of the Pacific
... ADS Infrared Photometry of SS Cygni and RX Andromedae Near Maximum Szkody, Paula Abstract infrared measurements of two dwarf novae reveal that the observed energy distribution Fx changes from an approximately 1 /X2 dependence toward a 1 7X4 dependence for larger X at about 1.25 . This change of the X dependence leads to a n 7 X 10i3 . The observations of SS Cyg at ...
Tópico(s): Astronomical Observations and Instrumentation
1974 - IOP Publishing | The Astrophysical Journal
Tópico(s): Ancient Mediterranean Archaeology and History
1912 - Oxford University Press | Monthly Notices of the Royal Astronomical Society
Jennifer Birriel, B. R. Espey, R. E. Schulte‐Ladbeck,
... and optical observations of the symbiotic star Z Andromedae, obtained with the space-borne Hopkins Ultraviolet Telescope and the Mount Hopkins 1.5 m telescope. Our data show the presence of both the O VI λλ1032, 1038 resonance doublet and the λ6825 and λ7082 emission lines and provide strong evidence for the Raman effect in Z And. We show that the unusual line ratio of 7:1 observed for the O VI lines is ...
Tópico(s): Astrophysical Phenomena and Observations
1998 - IOP Publishing | The Astrophysical Journal
Debra A. Fischer, Geoffrey W. Marcy, R. Paul Butler, Steven S. Vogt, S. Frink, Kevin Apps,
... are consistent with additional companions. Except for Upsilon Andromedae, the source of the velocity variation remains speculative pending completion of one full orbit. GJ 876 exhibits residual velocities with high rms scatter (24 m s-1), lacking identifiable coherence. The residual velocities for six of the 12 stars (51 Peg, 70 Vir, 16 Cyg B, ρ CrB, 47 UMa, and HD 195019) exhibit rms velocity scatter of ~7 m s-1, consistent with errors. The residual ...
Tópico(s): Astronomical and nuclear sciences
2001 - IOP Publishing | The Astrophysical Journal
Takashi Itô, Shoken M. Miyama,
... estimate that the upper limit masses of ν Andromedae planets in our model is about 1/0.7 ∽ 1.43 times larger than its minimum.
Tópico(s): Astrophysics and Star Formation Studies
2004 - Cambridge University Press | Symposium - International Astronomical Union
... both G-type components of the spectroscopic binary ~ Andromedae have been determined. The stars move in nearly circular orbits with a period of 115.7 days. The ratio of the masses of the ...
Tópico(s): Astronomical and nuclear sciences
1946 - IOP Publishing | The Astrophysical Journal
Debra A. Fischer, Geoffrey W. Marcy, R. Paul Butler, Steven S. Vogt, Gregory W. Henry, D. Pourbaix, Bernard Walp, A. Misch, Jason T. Wright,
... yield rotation periods of 7.0 and 35.7 days, respectively, very different from the planetary orbital periods. The orbital parameters of these two systems are compared with updated parameters for all of the known multiple-planet systems. Updated velocities are provided for the ϒ Andromedae system.
Tópico(s): Astro and Planetary Science
2003 - IOP Publishing | The Astrophysical Journal
... zur Klasse Md gerechnet wurden, z. B. R Andromedae, werden besser mit den Md-Sternen zusammen behandelt. Google Scholar p167_7) Joy, Publ. Astr. Soc. Pacific 31. 180. Google ...
Tópico(s): Stellar, planetary, and galactic studies
1922 - Wiley | Astronomische Nachrichten
Astronomische NachrichtenVolume 180, Issue 7 p. 119-120 Une Variable Une variable nouvelle 2.1909 Andromedae Prof. W. Ceraski, Prof. W. Ceraski MoscouSearch for more papers by this author Prof. W. Ceraski, Prof. W. Ceraski MoscouSearch ...
Tópico(s): Stellar, planetary, and galactic studies
1909 - Wiley | Astronomische Nachrichten
view Abstract Citations (13) References (28) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS SN 1984A and S Andromedae: Two Examples of Rare Type IA Supernovae Graham, James R. Abstract Supernova 1984A was a remarkable Type Ia event which exhibited extremely high-velocity material in its spectrum. The optical light curve of this supernova is marked by a rapid decline, which further distinguishes it from common Type Ia events, but the optical spectra are, apart from ...
Tópico(s): Gamma-ray bursts and supernovae
1988 - IOP Publishing | The Astrophysical Journal
Astronomische NachrichtenVolume 183, Issue 7 p. 109-110 Article Beobachtungen des Algolvariablen 21.1909 Andromedae (BD +32°4756) A. Kopff, A. Kopff Königstuhl-Sternwarte, HeidelbergSearch for more papers by this author A. Kopff, A. Kopff ...
Tópico(s): Astrophysics and Star Formation Studies
1909 - Wiley | Astronomische Nachrichten
... his large atlas, and is there called E Andromedæ, but a 5 m., with Lalande as authority. Bessel (Zone 386) estimated it 7; it is 6.2 in the “Durchmusterung,” and ...
Tópico(s): History of Science and Medicine
1875 - Nature Portfolio | Nature
... M. H. Abstract The McDonald Observatory's 2.7 m photoelectric analyzer was used to examine five symbiotic and VV Cephei variables for the presence of coherent longitudinal fields. Repeated observations of magnetic Ap stars indicates an absolute sensitivity of plus or minus 100-200 gauss. To this level, no new evidence is found supporting the reported kilogauss fields on the quiescent symbiotics AG Pegasi and EG Andromedae, nor for the VV Cephei stars VV Cephei ...
Tópico(s): Astronomy and Astrophysical Research
1982 - IOP Publishing | The Astrophysical Journal
Astronomische NachrichtenVolume 129, Issue 7-8 p. 99-102 Article The close pair of the triple system γ Andromedae (0Σ 38) S. W. Burnham, S. W. Burnham Mt. HamiltonSearch for more papers by this author S. W. Burnham, S. ...
Tópico(s): Astronomical and nuclear sciences
1892 - Wiley | Astronomische Nachrichten
Astronomische NachrichtenVolume 135, Issue 7 p. 127-128 Article Osservazioni della nuova variabile T Andromedae 0h14m48s.3 +26° 10′.3 (1855) Francesco Porro, Francesco Porro TorinoSearch for more papers by this author Francesco Porro, Francesco ...
Tópico(s): Stellar, planetary, and galactic studies
1894 - Wiley | Astronomische Nachrichten
L. H. Aller, Philip C. Keenan,
view Abstract Citations (16) References Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Spectra of R Andromedae (maximum) and MU Cephei Between 7400 and 8800 A. Aller, L. H. ; Keenan, P. C. Abstract Spectra of R Andromedae at its 1946 maximum and of j# Cephei have been measured in the photographic infrared region. Wave lengths, identifications, and estimated intensities are given for the atomic absorption lines as well as for a number of band heads of the infrared ...
Tópico(s): Astronomy and Astrophysical Research
1951 - IOP Publishing | The Astrophysical Journal
... Export Citation NASA/ADS The Spectrum of Z Andromedae in August, 1946. Merrill, Paul W. Abstract Spectrograms from XX 3450-5000, 10 A/mm, and from XX 4300-6650, 20 A/mm, taken onAugust 16,17, and 18, 1946, show a dark-line shell spectrum plus sixty bright lines. Traces of TiO bands are visible. The photographic magnitude was 10.7. The most striking dark lines are those of ...
Tópico(s): Atmospheric Ozone and Climate
1947 - IOP Publishing | The Astrophysical Journal
... Cygni absorption lines of increased strength, while Z Andromedae had stronger emission lines of Fe i than in the preceding fall and winter Publication: The Astrophysical Journal Pub Date: March 1944 DOI: 10.1086/144608 Bibcode: 1944ApJ....99..205S full text sources ADS | Related Materials (7) Part 1: 1953PASP...65..185S Part 2: 1953PASP... ...
Tópico(s): Astronomical Observations and Instrumentation
1944 - IOP Publishing | The Astrophysical Journal
Muhammed Faruk Yıldırım, F. Aliçavuş, F. Soydugan,
In this study, new photometric observations of shallow contact binary CN Andromedae (CN And) were performed and multi-color (BV R) CCD light curves (LCs) were obtained. Simultaneous analysis of new LCs and published radial velocity (RV) data reveals that the system is an early contact binary in which both components have recently filled their inner Roche lobes. Asymmetric LCs were modeled by a dark spot on the primary component and a hot spot on the secondary component that probably resulted from magnetic ...
Tópico(s): Astro and Planetary Science
2019 - IOP Publishing | Research in Astronomy and Astrophysics
Tópico(s): Historical Astronomy and Related Studies
1907 - Oxford University Press | Monthly Notices of the Royal Astronomical Society
Tópico(s): Astro and Planetary Science
1907 - Oxford University Press | Monthly Notices of the Royal Astronomical Society