Astronomy & Astrophysics | VOL. 603
Read

First evidence of multiple populations along the AGB from Strömgren photometry

Publication Date Jul 1, 2017

Abstract

Spectroscopic studies have demonstrated that nearly all Galactic globular clusters (GCs) harbour multiple stellar populations with different chemical compositions. Moreover, colour-magnitude diagrams based exclusively on Stromgrem photometry have allowed us to identify and characterise multiple populations along the RGB of a large number of clusters. In this paper we show for the first time that Stromgren photometry is also very efficient at identifying multiple populations along the AGB, and demonstrate that the AGB of M 3, M 92, NGC 362, NGC 1851, and NGC 6752 are not consistent with a single stellar population. We also provide a catalogue of RGB and AGB stars photometrically identified in these clusters for further spectroscopic follow-up studies. We combined photometry and elemental abundances from the literature for RGB and AGB stars in NGC 6752 where the presence of multiple populations along the AGB has been widely debated. We find that, while the MS, SGB, and RGB host three stellar populations with different helium and light element abundances, only two populations of AGB stars are present in the cluster. These results are consistent with standard evolutionary theory.

Concepts
Powered ByUnsilo

Multiple Populations
AGB Stars In NGC
Populations Of AGB Stars
Evidence Of Multiple Populations
AGB Stars
Presence Of Multiple Populations
Standard Evolutionary Theory
Single Stellar Population
Light Element Abundances
Stellar Populations

Introducing Weekly Round-ups!Beta

Powered by R DiscoveryR Discovery

Round-ups are the summaries of handpicked papers around trending topics published every week. These would enable you to scan through a collection of papers and decide if the paper is relevant to you before actually investing time into reading it.

Coronavirus Research Articles published between Aug 01, 2022 to Aug 07, 2022

R DiscoveryAug 08, 2022
R DiscoveryArticles Included:  5

Introduction: The corona virus disease (COVID)-19 is a severe acute respiratory syndrome (SARS-CoV-2) which is posing a great threat to mankind and ha...

Read More

Climate change Research Articles published between Aug 01, 2022 to Aug 07, 2022

R DiscoveryAug 08, 2022
R DiscoveryArticles Included:  5

We use cookies to improve your website experience. To learn about our use of cookies and how you can manage your cookie settings, please see our Cooki...

Read More

Good health Research Articles published between Aug 01, 2022 to Aug 07, 2022

R DiscoveryAug 08, 2022
R DiscoveryArticles Included:  2

Don’t have an account? Create a Free Account If you don't remember your password, you can reset it by entering your email address and clicking the Res...

Read More

Quality Of Education Research Articles published between Aug 01, 2022 to Aug 07, 2022

R DiscoveryAug 08, 2022
R DiscoveryArticles Included:  2

Introduction: In 2014 the Accreditation Council for Graduate Medical Education modified adult training requirements for child neurology certification ...

Read More

Gender Equality Research Articles published between Aug 01, 2022 to Aug 07, 2022

R DiscoveryAug 08, 2022
R DiscoveryArticles Included:  3

Introduction: Opioid use disorder (OUD) is characterized as a problematic cycle of substance intoxication and binging, followed by associated withdraw...

Read More

Coronavirus Pandemic

You can also read COVID related content on R COVID-19

R ProductsCOVID-19

ONE PROBLEM . ONE PURPOSE . ONE PLACE

Creating the world’s largest AI-driven & human-curated collection of research, news, expert recommendations and educational resources on COVID-19

COVID-19 Dashboard

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on “as is” basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The Copyright Law.