Evolved Massive Stars at Low-metallicity IV.Using 1.6μm “H-bump” to identify red supergiant stars:a case study of NGC 6822 Ming Yang, Alceste Z. Bonanos, Biwei Jiang, Man I Lam, Jian Gao, Panagiotis Gavras, Grigoris Maravelias, Shu Wang, Xiao-Dian Chen, Frank Tramper, Yi Ren, Zoi T. Spetsieri Abstract We present a case …
Evolved Massive Stars at Low-metallicity III. A Source Catalog for the Large Magellanic Cloud Ming Yang, Alceste Z. Bonanos, Biwei Jiang, Jian Gao, Panagiotis Gavras, Grigoris Maravelias, Shu Wang, Xiao-Dian Chen, Man I Lam, Yi Ren, Frank Tramper, Zoi T. Spetsieri Abstract We present a clean, magnitude-limited (IRAC1 or WISE1≤15.0 …
The pandemic of Covid-19 has obviously affected our observing runs also. ESO is (still) totally shut down while GTC after some off period it seems that it is under some limited operation. Our accepted observing program with GTC includes Mulit-Object Spectroscopic observations with the OSIRIS instrument. For this we need …
Evolved Massive Stars at Low-metallicity II. Red Supergiant Stars in the Small Magellanic Cloud Ming Yang, Alceste Z. Bonanos, Bi-Wei Jiang, Jian Gao, Panagiotis Gavras, Grigoris Maravelias, Shu Wang, Xiao-Dian Chen, Frank Tramper, Yi Ren, Zoi T. Spetsieri, Meng-Yao Xue Abstract We present the most comprehensive RSG sample for the …
The ASSESS team is joining the Massive Stars IAU Symposium 361 titled “Massive Stars Near and Far“, held in Ballyconnell, Ireland (May 18-22). The SOC has offered Alceste a talk “Introducing the ASSESS project: Episodic Mass Loss in Evolved Massive Stars: Key to Understanding the Explosive Early Universe”, while while …
Evolved massive stars at low-metallicity. I. A source catalog for the Small Magellanic Cloud Yang, Ming; Bonanos, Alceste Z.; Jiang, Bi-Wei; Gao, Jian; Gavras, Panagiotis; Maravelias, Grigoris; Ren, Yi; Wang, Shu; Xue, Meng-Yao; Tramper, Frank; Spetsieri, Zoi T.; Pouliasis, Ektoras Abstract We present a clean, magnitude-limited (IRAC1 or WISE1 ≤ …
Red supergiant stars in the Large Magellanic Cloud. II. Infrared properties and mid-infrared variability Yang, Ming; Bonanos, Alceste Z.; Jiang, Bi-Wei; Gao, Jian; Xue, Meng-Yao; Wang, Shu; Lam, Man I.; Spetsieri, Zoi T.; Ren, Yi; Gavras, Panagiotis Abstract The characteristics of infrared properties and mid-infrared (MIR) variability of red supergiant …
Double success! Our GTC proposal to observe with OSIRIS has been also accepted (42 hours)! Now we need to work hard on the preparations for both these and the ESO observations. But we are really happy that we managed to get these observations as they are critical for our project.
Success! We just got notified that our observing proposal for FORS at 8.2m VLT has passed with a high grade. Although we got just a bit less time than what we asked for (39 hours instead of 43) we will obtain many useful data. Let’s go plan these observations now!
On December 13th (2019) we organized a machine-learning workshop at the premises of the IAASARS/NOA, at Penteli (Greece). The goal of this particular workshop was to enhance the interaction between the researchers of the National Observatory of Athens and the Athena Research Center. The former presented challenges from their own fields …
