J/AJ/126/2867 Red supergiants in Magellanic Clouds (Massey+, 2003)
The evolution of massive stars. I. Red supergiants in the Magellanic Clouds.
Massey P., Olsen K.A.G.
<Astron. J., 126, 2867-2886 (2003)>
=2003AJ....126.2867M 2003AJ....126.2867M
ADC_Keywords: Magellanic Clouds ; Stars, supergiant ; Photometry, CCD ;
Photometry, UBVRI ; MK spectral classification
Keywords: galaxies: stellar content - galaxies: structure - Magellanic Clouds -
stars: evolution - supergiants - surveys
Abstract:
We investigate the red supergiant (RSG) content of the SMC and LMC
using multiobject spectroscopy on a sample of red stars previously
identified by BVR CCD photometry. We obtained high-accuracy (<1km/s)
radial velocities for 118 red stars seen toward the SMC and 167 red
stars seen toward the LMC, confirming most of these (89% and 95%,
respectively) as red supergiants. Spectral types were also determined
for most of these RSGs.
Description:
Our sample of red supergiant candidates comes from a recent UBVR CCD
survey covering most of the Clouds (Massey, 2002, Cat. II/236).
Our spectroscopy used the Hydra fiber positioner on the Blanco 4m
telescope at Cerro Tololo Inter-American Observatory during the nights
of (UT) 2001 October 46.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 86 118 Red stars seen towards the SMC
table2.dat 85 167 Red stars seen towards the LMC
table7.dat 61 28 Other spectroscopically confirmed RSGs in the SMC
table8.dat 61 25 Other spectroscopically confirmed RSGs in the LMC
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See also:
II/236 : UBVR CCD survey of the Magellanic clouds (Massey+, 2002)
Byte-by-byte Description of file: table1.dat table2.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- [M2002] Star identification number (1)
8- 9 I2 h RAh Hour of Right Ascension (J2000) (1)
11- 12 I2 min RAm Minute of Right Ascension (J2000) (1)
14- 18 F5.2 s RAs Second of Right Ascension (J2000) (1)
20 A1 --- DE- Sign of the Declination (J2000) (1)
21- 22 I2 deg DEd Degree of Declination (J2000) (1)
24- 25 I2 arcmin DEm Arcminute of Declination (J2000) (1)
27- 30 F4.1 arcsec DEs Arcsecond of Declination (J2000) (1)
32- 36 F5.2 mag Vmag The V band magnitude (1)
38- 41 F4.2 mag B-V The (B-V) color (1)
43- 46 F4.2 mag V-R The (V-R) color (1)
48- 52 F5.3 [K] LogTeff ? Log of the effective temperature (2)
54- 59 F6.2 mag Mbol ? Bolometric absolute magnitude (2)
61- 65 F5.1 km/s RV Radial velocity
67- 70 A4 --- Memb Membership (3)
72- 78 A7 --- NSpType New spectral type
80- 85 A6 --- LSpType Spectral type (4)
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Note (1): From Massey, 2002, Cat. II/236.
In Simbad: [M2002] SMC NNNNNN in table1, [M2002] LMC NNNNNN in table2
Note (2): Based upon spectral type, if available, or V-R if not. See text.
Note (3): Membership:
SMC = Small Magellanic Cloud star;
LMC = Small Magellanic Cloud star;
Fgd = Foreground star.
Note (4): Spectral type from Elias et al., 1985ApJS...57...91E 1985ApJS...57...91E in SMC,
from Humphreys, 1979ApJS...39..389H 1979ApJS...39..389H in LMC.
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Byte-by-byte Description of file: table7.dat table8.dat
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Bytes Format Units Label Explanations
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1- 18 A18 --- Name Name (1)
21- 25 F5.2 mag Vmag V magnitude
27- 36 A10 --- ID Identification (2)
39- 47 A9 --- SpType Spectral type (3)
49- 53 F5.3 [K] logTeff Effective temperature
56- 61 F6.2 mag Mbol Bolometric absolute magnitude
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Note (1): [M2002] are from Massey 2002, Cat. II/236
[S84d] are from Elias et al. 1985ApJS...57...91E 1985ApJS...57...91E
SP77 are from Humphreys, 1979ApJS...39..389H 1979ApJS...39..389H
Note (2): Identifications from Sanduleak, 1989AJ.....98..825S 1989AJ.....98..825S in SMC,
from Humphreys, 1979ApJS...39..389H 1979ApJS...39..389H in LMC.
Note (3): Spectral types from Elias et al., 1985ApJS...57...91E 1985ApJS...57...91E in SMC,
from Humphreys, 1979ApJS...39..389H 1979ApJS...39..389H in LMC.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 12-Jan-2004