A SPECTRAL ATLAS OF lambda BOOTIS STARS

J 2014

A SPECTRAL ATLAS OF lambda BOOTIS STARS

PAUNZEN, Ernst and Ulrike HEITER

Basic information

Original name

A SPECTRAL ATLAS OF lambda BOOTIS STARS

Authors

PAUNZEN, Ernst (40 Austria, guarantor, belonging to the institution) and Ulrike HEITER (752 Sweden)

Edition

SERBIAN ASTRONOMICAL JOURNAL, BELGRADE, ASTRONOMICAL OBSERVATORY BELGRADE, 2014, 1450-698X

Other information

Language

English

Type of outcome

Article in a journal

Field of Study

10308 Astronomy

Country of publisher

Serbia

Confidentiality degree

is not subject to a state or trade secret

Impact factor

Impact factor: 0.704

RIV identification code

RIV/00216224:14310/14:00076701

Organization unit

Faculty of Science

DOI

https://doi.org/10.2298/SAJ1488075P

UT WoS

000340034400008

EID Scopus

2-s2.0-84923085370

Keywords in English

atlases; stars: chemically peculiar; stars: fundamental parameters

Abstract

In the original language

AB Since the discovery of lambda Bootis stars, a permanent confusion about their classification can be found in literature. This group of non-magnetic, Population I, metal-poor A to F-type stars, has often been used as some sort of trash can for "exotic" and spectroscopically dubious objects. Some attempts have been made to establish a homogeneous group of stars which share the same common properties. Unfortunately, the flood of "new" information (e.g. UV and IR data) led again to a whole zoo of objects classified as lambda Bootis stars, which, however, are apparent non-members. To overcome this unsatisfying situation, a spectral atlas of well established lambda Bootis stars for the classical optical domain was compiled. It includes intermediate dispersion (40 and 120 Angstroem/mm) spectra of three lambda Bootis, as well as appropriate MK standard stars. Furthermore, "suspicious" objects, such as shell and Field Horizontal Branch stars, have been considered in order to provide to classifiers a homogeneous reference. As a further step, a high resolution (8 Angstroem/mm) spectrum of one "classical" lambda Bootis star in the same wavelength region (3800 - 4600 Angstroem) is presented. In total, 55 lines can be used for this particular star to derive detailed abundances for nine heavy elements (Mg, Ca, Sc, Ti, Cr, Mn, Fe, Sr and Ba).

Links

3SGA5916, interní kód MU

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

Investor: South-Moravian Region, Incoming grants

7AMB14AT015, research and development project

Name: Nový pohled na magnetické hvězdy (Acronym: MAGSTARS)

Investor: Ministry of Education, Youth and Sports of the CR

Cite

PAUNZEN, Ernst and Ulrike HEITER. A SPECTRAL ATLAS OF lambda BOOTIS STARS. SERBIAN ASTRONOMICAL JOURNAL. BELGRADE: ASTRONOMICAL OBSERVATORY BELGRADE, 2014, vol. 188, No 6, p. 75-84. ISSN 1450-698X. Available from: https://doi.org/10.2298/SAJ1488075P.

@article{1200176,
   author = {Paunzen, Ernst and Heiter, Ulrike},
   article_location = {BELGRADE},
   article_number = {6},
   doi = {https://doi.org/10.2298/SAJ1488075P},
   keywords = {atlases; stars: chemically peculiar; stars: fundamental parameters},
   language = {eng},
   issn = {1450-698X},
   journal = {SERBIAN ASTRONOMICAL JOURNAL},
   title = {A SPECTRAL ATLAS OF lambda BOOTIS STARS},
   volume = {188},
   year = {2014}
}

TY  - JOUR
ID  - 1200176
AU  - Paunzen, Ernst - Heiter, Ulrike
PY  - 2014
TI  - A SPECTRAL ATLAS OF lambda BOOTIS STARS
JF  - SERBIAN ASTRONOMICAL JOURNAL
VL  - 188
IS  - 6
SP  - 75-84
EP  - 75-84
PB  - ASTRONOMICAL OBSERVATORY BELGRADE
SN  - 1450698X
KW  - atlases
KW  - stars: chemically peculiar
KW  - stars: fundamental parameters
N2  - AB Since the discovery of lambda Bootis stars, a permanent confusion about their classification can be found in literature. This group of non-magnetic, Population I, metal-poor A to F-type stars, has often been used as some sort of trash can for "exotic" and spectroscopically dubious objects. Some attempts have been made to establish a homogeneous group of stars which share the same common properties. Unfortunately, the flood of "new" information (e.g. UV and IR data) led again to a whole zoo of objects classified as lambda Bootis stars, which, however, are apparent non-members. To overcome this unsatisfying situation, a spectral atlas of well established lambda Bootis stars for the classical optical domain was compiled. It includes intermediate dispersion (40 and 120 Angstroem/mm) spectra of three lambda Bootis, as well as appropriate MK standard stars. Furthermore, "suspicious" objects, such as shell and Field Horizontal Branch stars, have been considered in order to provide to classifiers a homogeneous reference. As a further step, a high resolution (8 Angstroem/mm) spectrum of one "classical" lambda Bootis star in the same wavelength region (3800 - 4600 Angstroem) is presented. In total, 55 lines can be used for this particular star to derive detailed abundances for nine heavy elements (Mg, Ca, Sc, Ti, Cr, Mn, Fe, Sr and Ba).
ER  -

PAUNZEN, Ernst and Ulrike HEITER. A SPECTRAL ATLAS OF lambda BOOTIS STARS. \textit{SERBIAN ASTRONOMICAL JOURNAL}. BELGRADE: ASTRONOMICAL OBSERVATORY BELGRADE, 2014, vol.~188, No~6, p.~75-84. ISSN~1450-698X. Available from: https://doi.org/10.2298/SAJ1488075P.

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