DOES THE STELLAR DISTRIBUTION FLARE? A COMPARISON OF STELLAR SCALE HEIGHTS WITH LAB H i DATA

By P. Kalberla, J. Kerp, L. Dedes, U. Haud. 2014

28 citations recorded by the source corpus.

The question of whether the stellar populations in the Milky Way take part in the flaring of scale heights as observed for the H i gas is a matter of debate. Standard mass models for the Milky Way assume a constant scale height for each of the different stellar distributions. However, there is mounting evidence that at least some of the stellar distributions reach, at large galactocentric distances, high altitudes, which are incompatible with a constant scale height. We discuss recent observational evidence for stellar flaring and compare it with H i data from the Leiden/Argentine/Bonn survey. Within the systemic and statistical uncertainties we find a good agreement between both.

Subfields: Astronomy and Astrophysics, Education, Instrumentation

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

1. I. Minchev
2. Hans-Walter Rix
3. Jo Bovy
4. P. Hopkins
5. James S. Bullock
6. M. Martig
7. D. Keres̆
8. Volker Springel

In Education

1. I. Minchev
2. M. Martig
3. Jo Bovy
4. C. Chiappini
5. J. Holtzman
6. M. Shetrone
7. D. Nidever
8. B. Famaey

In Instrumentation

1. I. Minchev
2. M. Martig
3. Hans-Walter Rix
4. P. Hopkins
5. Jo Bovy
6. C. Chiappini
7. D. Keres̆
8. C. Faucher-Giguére

Citations in the corpus

• Yule-Simpson’s paradox in Galactic Archaeology (2019, background): “Flaring in Milky Way stellar populations of limited age range has been found by Kalberla et al. (2014) (Red Clump), Feast et al. (2014) (Cepheids), Carraro et al. (2015) (young clusters) and in LAMOST (Wan et al. 2017; Wang et al. 2018; Xiang et al. 2018) and APOGEE (Mackereth et al. 2017) mono-age…”
• RINGS AND RADIAL WAVES IN THE DISK OF THE MILKY WAY (2015, background): “Regarding the possibility of a disk flaring, Kalberla et al. (2014) review the flaring of stars in different sky surveys.”
• A-type stars in the Canada–France Imaging Survey – II. Tracing the height of the disc at large distances with Blue Stragglers (2018, background): “Nevertheless, the amplitude of the flaring of the stellar component is still debated (Reylé et al. 2009; Polido, Jablonski & Lépine 2013; Kalberla et al. 2014; Lopez-Corredoira & Molgo 2014; Amôres, Robin & Reylé 2017).”
• The age–metallicity structure of the Milky Way disc using APOGEE (2017, background): “A flare in the gas disk of the Milky Way, associated with the stellar component, is also observed in numerous studies (e.g. Feast et al. 2014; Kalberla et al. 2014; Lozinskaya & Karadashev 1963), suggesting a formation of the disk with structural parameters similar to its progenitor gas disk.”
• The structure and dynamical evolution of the stellar disc of a simulated Milky Way-mass galaxy (2016, background): “The disk flaring broadly agrees with observations in the MW stellar disk (e.g. Momany et al. 2006; Kalberla et al. 2014; López-Corredoira & Molgó 2014; Bovy et al. 2016).”