Early Stage of Chemically Peculiar Stars

D 2015

Early Stage of Chemically Peculiar Stars

NETOPIL, Martin, Luca FOSSATI, Konstanze ZWINTZ, Ernst PAUNZEN, Stefano BAGNULO et. al.

Basic information

Original name

Early Stage of Chemically Peculiar Stars

Authors

NETOPIL, Martin (40 Austria, belonging to the institution), Luca FOSSATI (380 Italy), Konstanze ZWINTZ (40 Austria), Ernst PAUNZEN (40 Austria, belonging to the institution), Stefano BAGNULO (380 Italy) and Olga PINTADO (32 Argentina)

Edition

494. vyd. San Francisco, Physics and Evolution of Magnetic and Related Stars, p. 148-156, 9 pp. 2015

Publisher

Astronomical Society of the Pacific

Other information

Language

English

Type of outcome

Stať ve sborníku

Field of Study

10308 Astronomy

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

Publication form

printed version "print"

RIV identification code

RIV/00216224:14310/15:00081366

Organization unit

Faculty of Science

ISBN

978-1-58381-873-2

UT WoS

000366452300018

Keywords in English

pre-main-sequence cp stars

Abstract

V originále

Chemically peculiar stars are known to be the main sequence objects and are characterized by a wide variety of element abundance patterns. They display abundance peculiarities of various chemical elements from helium to mercury in their photospheres. These are explained by the diffusion processes driven by the competition between the radiative levitation and gravitational settling. Current estimates suggest that about 10% of all the stars in the corresponding spectral range (B to F-type) belong to various CP groups. The most populous groups are the metallic line (Am) stars and the magnetic Bp/Ap objects. The reason and the time-scale for the rise of chemical peculiarities is still not known, so is for the role of the magnetic field. The investigation of very young CP stars can help to shed more light on these issues and to test the diffusion theory. However, so far only one pre-main sequence (PMS) Bp star is known. We present here the discovery of a PMS CP candidate, which very probably belongs to the group of Am CP stars.

Links

GP14-26115P, research and development project

Name: Vstříc k jednotné škále metalicity pro otevřené hvězdokupy

Investor: Czech Science Foundation

3SGA5916, interní kód MU

Name: Hvězdy a hvězdokupy v Magellanových mračnech (Acronym: Webda MaC)

Investor: South-Moravian Region, Incoming grants

Citovat

NETOPIL, Martin, Luca FOSSATI, Konstanze ZWINTZ, Ernst PAUNZEN, Stefano BAGNULO and Olga PINTADO. Early Stage of Chemically Peculiar Stars. In Kudryavtsev, D. O.; Balega, Yu. Yu.; Romanyuk, I. I. Physics and Evolution of Magnetic and Related Stars. 494th ed. San Francisco: Astronomical Society of the Pacific, 2015, p. 148-156. ISBN 978-1-58381-873-2.

@inproceedings{1322379,
   author = {Netopil, Martin and Fossati, Luca and Zwintz, Konstanze and Paunzen, Ernst and Bagnulo, Stefano and Pintado, Olga},
   address = {San Francisco},
   booktitle = {Physics and Evolution of Magnetic and Related Stars},
   edition = {494},
   editor = {Kudryavtsev, D. O.; Balega, Yu. Yu.; Romanyuk, I. I.},
   keywords = {pre-main-sequence cp stars},
   howpublished = {tištěná verze "print"},
   language = {eng},
   location = {San Francisco},
   isbn = {978-1-58381-873-2},
   pages = {148-156},
   publisher = {Astronomical Society of the Pacific},
   title = {Early Stage of Chemically Peculiar Stars},
   year = {2015}
}

TY  - JOUR
ID  - 1322379
AU  - Netopil, Martin - Fossati, Luca - Zwintz, Konstanze - Paunzen, Ernst - Bagnulo, Stefano - Pintado, Olga
PY  - 2015
TI  - Early Stage of Chemically Peculiar Stars
PB  - Astronomical Society of the Pacific
CY  - San Francisco
SN  - 9781583818732
KW  - pre-main-sequence cp stars
N2  - Chemically peculiar stars are known to be the main sequence objects and are characterized by a wide variety of element abundance patterns. They display abundance peculiarities of various chemical elements from helium to mercury in their photospheres. These are explained by the diffusion processes driven by the competition between the radiative levitation and gravitational settling. Current estimates suggest that about 10% of all the stars in the corresponding spectral range (B to F-type) belong to various CP groups. The most populous groups are the metallic line (Am) stars and the magnetic Bp/Ap objects. The reason and the time-scale for the rise of chemical peculiarities is still not known, so is for the role of the magnetic field. The investigation of very young CP stars can help to shed more light on these issues and to test the diffusion theory. However, so far only one pre-main sequence (PMS) Bp star is known. We present here the discovery of a PMS CP candidate, which very probably belongs to the group of Am CP stars.
ER  -

NETOPIL, Martin, Luca FOSSATI, Konstanze ZWINTZ, Ernst PAUNZEN, Stefano BAGNULO and Olga PINTADO. Early Stage of Chemically Peculiar Stars. In Kudryavtsev, D. O.; Balega, Yu. Yu.; Romanyuk, I. I. \textit{Physics and Evolution of Magnetic and Related Stars}. 494th ed. San Francisco: Astronomical Society of the Pacific, 2015, p.~148-156. ISBN~978-1-58381-873-2.

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