|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'504'585
Articles rated: 2609
24 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
The APOKASC Catalog: An Asteroseismic and Spectroscopic Joint Survey of Targets in the Kepler Fields | | Marc H. Pinsonneault
; Yvonne Elsworth
; Courtney Epstein
; Saskia Hekker
; Sz. Mészáros
; William J. Chaplin
; Jennifer A. Johnson
; Rafael A. García
; Jon Holtzman
; Savita Mathur
; Ana García Pérez
; Victor Silva Aguirre
; Léo Girardi
; Sarbani Basu
; Matthew Shetrone
; Dennis Stello
; Carlos Allende Prieto
; Deokkeun An
; Paul Beck
; Timothy C. Beers
; Dmitry Bizyaev
; Steven Bloemen
; Jo Bovy
; Katia Cunha
; Joris De Ridder
; Peter M. Frinchaboy
; D.A. Garcia-Hernández
; Ronald Gilliland
; Paul Harding
; Fred R. Hearty
; Daniel Huber
; Inese Ivans
; Thomas Kallinger
; Steven R. Majewski
; Travis S. Metcalfe
; Andrea Miglio
; Benoit Mosser
; Demitri Muna
; David L. Nidever
; Donald P. Schneider
; Aldo Serenelli
; Verne V. Smith
; Jamie Tayar
; Olga Zamora
; Gail Zasowski
; | | Date: |
9 Oct 2014 | | Abstract: | We present the first APOKASC catalog of spectroscopic and asteroseismic
properties of 1916 red giants observed in the Kepler fields. The spectroscopic
parameters provided from the Apache Point Observatory Galactic Evolution
Experiment project are complemented with asteroseismic surface gravities,
masses, radii, and mean densities determined by members of the Kepler
Asteroseismology Science Consortium. We assess both random and systematic
sources of error and include a discussion of sample selection for giants in the
Kepler fields. Total uncertainties in the main catalog properties are of order
80 K in Teff , 0.06 dex in [M/H], 0.014 dex in log g, and 12% and 5% in mass
and radius, respectively; these reflect a combination of systematic and random
errors. Asteroseismic surface gravities are substantially more precise and
accurate than spectroscopic ones, and we find good agreement between their mean
values and the calibrated spectroscopic surface gravities. There are, however,
systematic underlying trends with Teff and log g. Our effective temperature
scale is between 0-200 K cooler than that expected from the Infrared Flux
Method, depending on the adopted extinction map, which provides evidence for a
lower value on average than that inferred for the Kepler Input Catalog (KIC).
We find a reasonable correspondence between the photometric KIC and
spectroscopic APOKASC metallicity scales, with increased dispersion in KIC
metallicities as the absolute metal abundance decreases, and offsets in Teff
and log g consistent with those derived in the literature. We present mean
fitting relations between APOKASC and KIC observables and discuss future
prospects, strengths, and limitations of the catalog data. | | Source: | arXiv, 1410.2503 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER