Cyanogen in NGC 1851 red giant branch and asymptotic giant branch stars: Quadrimodal distributions

Campbell, SYong, DavidWylie de Boer, ElizabethStancliffe, R JLattanzio, JohnAngelou, G CD'Orazi, V DMartell, S LGrundahl, FrankSneden, Chris2015-12-102041-8205http://hdl.handle.net/1885/70117The Galactic globular cluster NGC 1851 has raised much interest since Hubble Space Telescope photometry revealed that it hosts a double subgiant branch. Here we report on our homogeneous study into the cyanogen (CN) band strengths in the red giant branchAuthor/s retain copyrightKeywords: globular clusters: general - globular clusters: individual (NGC 1851; NGC 288)-stars:AGB and post-AGBCyanogen in NGC 1851 red giant branch and asymptotic giant branch stars: Quadrimodal distributions201210.1088/2041-8205/761/1/L22016-02-24