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J/other/NewA/56.28  Be stars in MC star clusters NIR properties (Paul+, 2017)

NIR properties of Be stars in star clusters in the Magellanic Clouds. Paul K.T., Annapurni S., Blesson M., Shruthi S.B. <New Astron., 56, 28-49 (2017)> =2017NewA...56...28P (SIMBAD/NED BibCode)
ADC_Keywords: Magellanic Clouds ; Stars, Be ; Photometry, infrared ; Photometry, UBVRI ; Photometry, H-alpha Keywords: stars - emission-line - Be: infrared - stars: galaxies - Magellanic Clouds Abstract: Magellanic Clouds are the nearby galaxies which are ideal to study the properties of metal poor stellar population. In this study, we explore the near-IR properties of optically identified classical Be stars in 19 star clusters in the Magellanic Clouds. From an optically identified sample of 835 Be stars we obtained the J, H, K magnitudes of 389 stars from the IRSF MCPS catalog. Among these, 247 stars (36.4%) are found in 9 clusters in the Large Magellanic Cloud and 142 stars (55.5%) in 10 clusters in the Small Magellanic Cloud. After correcting for reddening, we studied their NIR properties in the (H-K)0 vs (J-H)0 diagram. We identified 14 stars with abnormally large near IR excesses, which were removed from the analysis, there by restricting our study to 355 classical Be stars. We propose an extended area in the near-IR (H-K)0 vs (J-H)0 diagram as the diagnostic location of Classical Be stars in the Magellanic Clouds. We identified 14 stars to have near-IR excess, higher than those seen in classical Be stars. From the analysis based on spectral energy distribution and luminosity estimate, we found that 8 candidate Be stars may be Herbig Ae/Be stars. We identified a new sample of 6 sgB[e] stars, which when added to the sparse existing sample of 15 sgB[e] stars in the Magellanic Clouds can provide insight to understand the evolutionary link between sgB[e] stars and Luminous Blue variables. Description: In order to obtain the NIR properties of Be candidates in the LMC and the SMC, we used the NIR IRSF-MCPSC catalog (Kato et al., 2007PASJ...59..615K, Cat. II/288). The optically identified candidate Be stars in each cluster were cross-matched with the IRSF-MCPSC catalog. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table5.dat 104 235 Optical and NIR photometric magnitudes of Be candidate stars identified in the LMC and SMC clusters table6.dat 93 153 Optical and NIR photometric magnitudes of Be candidate stars identified in the LMC and SMC clusters
See also: II/288 : IRSF Magellanic Clouds Point Source Catalog (Kato+ 2007) J/A+AS/134/489 : Be stars in MC young clusters (Keller+ 1999) J/ApJ/652/458 : Candidates Be stars BVRHα photometry (Wisniewski+, 2006) Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1- 9 A9 --- Cluster Cluster name (1) 11- 13 I3 --- Star Star number within the cluster, WBBe Cluster Star in Simbad (1) 15- 16 I2 h RAh Right ascension (J2000) (1) 18- 19 I2 min RAm Right ascension (J2000) (1) 21- 25 F5.2 s RAs Right ascension (J2000) (1) 27 A1 --- DE- Declination sign (J2000) (1) 28- 29 I2 deg DEd Declination (J2000) (1) 31- 32 I2 arcmin DEm Declination (J2000) (1) 34- 38 F5.2 arcsec DEs Declination (J2000) (1) 40- 44 F5.2 mag Vmag V magnitude (1) 46- 49 F4.2 mag e_Vmag rms uncertainty on Vmag (1) 51- 55 F5.2 mag B-V B-V colour index (1) 57- 60 F4.2 mag e_B-V rms uncertainty on B-V (1) 62- 66 F5.2 mag R-Ha R-Hα colour index (1) 68- 71 F4.2 mag e_R-Ha rms uncertainty on R-Ha (1) 73- 77 F5.2 mag Jmag J magnitude (2) 79- 82 F4.2 mag e_Jmag rms uncertainty on Jmag 84- 88 F5.2 mag Hmag H magnitude (2) 90- 93 F4.2 mag e_Hmag rms uncertainty on Hmag (2) 95- 99 F5.2 mag Kmag K magnitude (2) 101-104 F4.2 mag e_Kmag rms uncertainty on Kmag
Note (1): from Wisniewski & Bjorkman (2006, Cat. J/ApJ/652/458). Note (2): J, H and K magnitudes are obtained by cross-matching with the IRSF-MCPSC catalog (Kato et al., 2007, Cat. II/288).
Byte-by-byte Description of file: table6.dat
Bytes Format Units Label Explanations
1- 18 A18 --- Name Star name (Cluster KWBBe NNNN), Cl* Cluster KWBBe NNNN in Simbad (1) 20- 21 I2 h RAh Right ascension (J2000) (1) 23- 24 I2 min RAm Right ascension (J2000) (1) 26- 30 F5.2 s RAs Right ascension (J2000) (1) 32 A1 --- DE- Declination sign (J2000) (1) 33- 34 I2 deg DEd Declination (J2000) (1) 36- 37 I2 arcmin DEm Declination (J2000) (1) 39- 43 F5.2 arcsec DEs Declination (J2000) (1) 45- 49 F5.2 mag Vmag V magnitude (1) 51- 55 F5.2 mag V-I V-I colour index (1) 57- 60 F4.2 mag R-Ha R-Hα colour index (1) 62- 66 F5.2 mag Jmag J magnitude (2) 68- 71 F4.2 mag e_Jmag rms uncertainty on Jmag 73- 77 F5.2 mag Hmag H magnitude (2) 79- 82 F4.2 mag e_Hmag rms uncertainty on Hmag (2) 84- 88 F5.2 mag Kmag K magnitude (2) 90- 93 F4.2 mag e_Kmag rms uncertainty on Kmag
Note (1): from Keller et al. (1999, Cat. J/A+AS/134/489). Note (2): J, H and K magnitudes are obtained by cross-matching with the IRSF-MCPSC catalog (Kato et al., 2007, Cat. II/288).
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 10-Nov-2017
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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