Title
Study of emissionline stars in young open clusters: A spectroscopic survey to search for Classical Be stars in young open clust,Used
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Emissionline stars in young open clusters are identified to study their properties, as a function of age, spectral type and evolutionary state. 207 open star clusters were observed using slitless spectroscopy and 157 Be stars were identified in 42 clusters. We found 54 new Be stars in 24 open clusters, of which 19 clusters are found to house Be stars for the first time. The Classical Be stars are located all along the main sequence in the optical colour magnitude diagram of clusters of all ages. A spectroscopic study of 152 Classical Be stars in 42 young open clusters were performed using medium resolution spectra in 3800 9000 range, to understand the Be phenomenon. Stars in the B0 B2 spectral bin are found be evolved to Be phase while others are born as Be stars. From optical/nearIR photometry and spectroscopy, we identified 3 Herbig Be and 2 Herbig Ae candidates. The star formation history of the hosting cluster were estimated by identifying premain sequence stars.
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We ship your order within 2–3 business days for USA deliveries and 5–8 business days for international shipments. Once your package has been dispatched from our warehouse, you'll receive an email confirmation with a tracking number, allowing you to track the status of your delivery.
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To facilitate a smooth return process, a Return Authorization (RA) Number is required for all returns. Returns without a valid RA number will be declined and may incur additional fees. You can request an RA number within 15 days of the original delivery date. For more details, please refer to our Return & Refund Policy page.
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Warranty
We provide a 2-year limited warranty, from the date of purchase for all our products.
If you believe you have received a defective product, or are experiencing any problems with your product, please contact us.
This warranty strictly does not cover damages that arose from negligence, misuse, wear and tear, or not in accordance with product instructions (dropping the product, etc.).
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Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
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