J/AJ/138/510 Spectral classification of N159/N160 stars (Farina+, 2009)
Spectroscopic study of the N159/N160 complex in the Large Magellanic Cloud.
Farina C., Bosch G.L., Morrell N.I., Barba R.H., Walborn N.R.
<Astron. J., 138, 510-516 (2009)>
=2009AJ....138..510F 2009AJ....138..510F
ADC_Keywords: Magellanic Clouds ; MK spectral classification ; H II regions
Keywords: galaxies: starburst - H II regions - ISM: individual (N159/N160) -
Magellanic Clouds - stars: early-type
Abstract:
We present a spectroscopic study of the N159/N160 massive star-forming
region south of 30 Doradus in the Large Magellanic Cloud, classifying
a total of 189 stars in the field of the complex. Most of them belong
to O and early B spectral classes; we have also found some uncommon
and very interesting spectra, including members of the Onfp class, a
Be P Cygni star, and some possible multiple systems. Using spectral
types as broad indicators of evolutionary stages, we considered the
evolutionary status of the region as a whole. We infer that massive
stars at different evolutionary stages are present throughout the
region, favoring the idea of a common time for the origin of recent
star formation in the N159/N160 complex as a whole, while sequential
star formation at different rates is probably present in several
subregions.
Description:
The images were taken during two consecutive nights in 2003 November,
at the Las Campanas Observatory (LCO), Chile, with the 2.5m Irenee du
Pont telescope and the Wide Field Reimaging CCD Camera, in the
multi-object spectroscopic mode.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 49 189 Spectral classification of 189 stars
notes.dat 80 106 Individual notes
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See also:
J/A+A/422/129 : JHKs photometry in N159 (LMC) (Meynadier+, 2004)
J/A+A/453/517 : JKs photometry of N159A (Testor+, 2006)
J/A+A/469/459 : K magnitudes of N159-5 (LMC) (Testor+, 2007)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- [FBM2009] Sequential number
4 A1 --- n_[FBM2009] [*] * indicates comments in notes.dat file
6 I1 h RAh Right ascension (J2000) (1)
8- 9 I2 min RAm Right ascension (J2000) (1)
11- 15 F5.2 s RAs Right ascension (J2000) (1)
17 A1 --- DE- Declination sign (J2000) (1)
18- 19 I2 deg DEd Declination (J2000) (1)
21- 22 I2 arcmin DEm Declination (J2000) (1)
24- 27 F4.1 arcsec DEs Declination (J2000) (1)
29- 44 A16 --- SpType MK spectral type from our data
46- 49 F4.1 mag Vmag ? V magnitude (2)
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Note (1): Celestial coordinates obtained through 2MASS astrometry
Note (2): V magnitudes from the Zaritsky et al. (2004AJ....128.1606Z 2004AJ....128.1606Z)
photometric survey for all the objects, except for stars 1, 41, and 42
for which the catalog correlation was uncertain
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Byte-by-byte Description of file: notes.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- [FBM2009] Sequential number
5- 80 A76 --- Note Text of the note
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 31-Dec-2011