Pulsation at the tip of the first giant branch?

Yoshifusa Ita; Toshihiko Tanabé; Noriyuki Matsunaga; Yasushi Nakajima; Chie Nagashima; Takahiro Nagayama; Daisuke Kato; Mikio Kurita; Tetsuya Nagata; Shuji Sato; Motohide Tamura; Hidehiko Nakaya; Yoshikazu Nakada

doi:10.1046/j.1365-8711.2002.06109.x

Pulsation at the tip of the first giant branch?

Yoshifusa Ita, Toshihiko Tanabé, Noriyuki Matsunaga, Yasushi Nakajima, Chie Nagashima, Takahiro Nagayama, Daisuke Kato, Mikio Kurita, Tetsuya Nagata, Shuji Sato, Motohide Tamura, Hidehiko Nakaya, Yoshikazu Nakada

Research output: Contribution to journal › Article › peer-review

35 Citations (Scopus)

Abstract

The first results of our ongoing near-infrared (NIR) survey of the variable red giants in the Large Magellanic Cloud, using the Infrared Survey Facility (IRSF) and the SIRIUS infrared camera, are presented. Many very red stars were detected and we found that most of them are variables. In the observed colour-magnitude diagram (J - K, K) and the stellar K magnitude distribution, the tip of the first giant branch (TRGB), where helium burning in the core starts, is clearly seen. Apart from the genuine AGB variables, we found many variable stars at luminosities around the TRGB. From this result, we infer that a substantial fraction of them are RGB variables.

Original language	English
Pages (from-to)	L31-L34
Journal	Monthly Notices of the Royal Astronomical Society
Volume	337
Issue number	3
DOIs	https://doi.org/10.1046/j.1365-8711.2002.06109.x
Publication status	Published - 2002 Dec 11
Externally published	Yes

Keywords

Galaxies: stellar content
Infrared: stars
Magellanic clouds
Stars: AGB and post-AGB
Stars: variables: other
Surveys

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1046/j.1365-8711.2002.06109.x

Cite this

@article{1b5c33f6ff2f409f818f696643a435fd,

title = "Pulsation at the tip of the first giant branch?",

abstract = "The first results of our ongoing near-infrared (NIR) survey of the variable red giants in the Large Magellanic Cloud, using the Infrared Survey Facility (IRSF) and the SIRIUS infrared camera, are presented. Many very red stars were detected and we found that most of them are variables. In the observed colour-magnitude diagram (J - K, K) and the stellar K magnitude distribution, the tip of the first giant branch (TRGB), where helium burning in the core starts, is clearly seen. Apart from the genuine AGB variables, we found many variable stars at luminosities around the TRGB. From this result, we infer that a substantial fraction of them are RGB variables.",

keywords = "Galaxies: stellar content, Infrared: stars, Magellanic clouds, Stars: AGB and post-AGB, Stars: variables: other, Surveys",

author = "Yoshifusa Ita and Toshihiko Tanab{\'e} and Noriyuki Matsunaga and Yasushi Nakajima and Chie Nagashima and Takahiro Nagayama and Daisuke Kato and Mikio Kurita and Tetsuya Nagata and Shuji Sato and Motohide Tamura and Hidehiko Nakaya and Yoshikazu Nakada",

year = "2002",

month = dec,

day = "11",

doi = "10.1046/j.1365-8711.2002.06109.x",

language = "English",

volume = "337",

pages = "L31--L34",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",