Connect with us

Edu News

Astronomers discover a multiplanet system nearby

Just 33 light years from Earth, the system appears to host two rocky, Earth-sized planets

EP Staff

Published

on

Written by Jennifer Chu, MIT News Office

CAMBRIDGE, Mass. — Astronomers at MIT and elsewhere have discovered a new multiplanet system within our galactic neighborhood that lies just 10 parsecs, or about 33 light-years, from Earth, making it one of the closest known multiplanet systems to our own.

At the heart of the system lies a small and cool M-dwarf star, named HD 260655, and astronomers have found that it hosts at least two terrestrial, Earth-sized planets. The rocky worlds are likely not habitable, as their orbits are relatively tight, exposing the planets to temperatures that are too high to sustain liquid surface water.

Nevertheless, scientists are excited about this system because the proximity and brightness of its star will give them a closer look at the properties of the planets and signs of any atmosphere they might hold.

“Both planets in this system are each considered among the best targets for atmospheric study because of the brightness of their star,” says Michelle Kunimoto, a postdoc in MIT’s Kavli Institute for Astrophysics and Space Research and one of the discovery’s lead scientists. “Is there a volatile-rich atmosphere around these planets? And are there signs of water or carbon-based species? These planets are fantastic test beds for those explorations.”

The team will present its discovery today at the meeting of the American Astronomical Society in Pasadena, California. Team members at MIT include Katharine Hesse, George Ricker, Sara Seager, Avi Shporer, Roland Vanderspek, and Joel Villaseñor, along with collaborators from institutions around the world.

Data power

The new planetary system was initially identified by NASA’s Transiting Exoplanet Survey Satellite (TESS), an MIT-led mission that is designed to observe the nearest and brightest stars, and detect periodic dips in light that could signal a passing planet.

In October 2021, Kunimoto, a member of MIT’s TESS science team, was monitoring the satellite’s incoming data when she noticed a pair of periodic dips in starlight, or transits, from the star HD 260655.

She ran the detections through the mission’s science inspection pipeline, and the signals were soon classified as two TESS Objects of Interest, or TOIs — objects that are flagged as potential planets. The same signals were also found independently by the Science Processing Operations Center (SPOC), the official TESS planet search pipeline based at NASA Ames. Scientists typically plan to follow up with other telescopes to confirm that the objects are indeed planets.

The process of classifying and subsequently confirming new planets can often take several years. For HD 260655, that process was shortened significantly with the help of archival data.

Soon after Kunimoto identified the two potential planets around HD 260655, Shporer looked to see whether the star was observed previously by other telescopes. As luck would have it, HD 260655 was listed in a survey of stars taken by the High Resolution Echelle Spectrometer (HIRES), an instrument that operates as part of the Keck Observatory in Hawaii. HIRES had been monitoring the star, along with a host of other stars, since 1998, and the researchers were able to access the survey’s publicly available data.

HD 260655 was also listed as part of another independent survey by CARMENES, an instrument that operates as part of the Calar Alto Observatory in Spain. As these data were private, the team reached out to members of both HIRES and CARMENES with the goal of combining their data power.

“These negotiations are sometimes quite delicate,” Shporer notes. “Luckily, the teams agreed to work together. This human interaction is almost as important in getting the data [as the actual observations].”

Planetary pull

In the end, this collaborative effort quickly confirmed the presence of two planets around HD 260655 in about six months.

To confirm that the signals from TESS were indeed from two orbiting planets, the researchers looked through both HIRES and CARMENES data of the star. Both surveys measure a star’s gravitational wobble, also known as its radial velocity.

“Every planet orbiting a star is going to have a little gravitational pull on its star,” Kunimoto explains. “What we’re looking for is any slight movement of that star that could indicate a planetary-mass object is tugging on it.”

From both sets of archival data, the researchers found statistically significant signs that the signals detected by TESS were indeed two orbiting planets.

“Then we knew we had something very exciting,” Shporer says.

The team then looked more closely at TESS data to pin down properties of both planets, including their orbital period and size. They determined that the inner planet, dubbed HD 260655b, orbits the star every 2.8 days and is about 1.2 times as big as the Earth. The second outer planet, HD 260655c, orbits every 5.7 days and is 1.5 times as big as the Earth.

From the radial-velocity data from HIRES and CARMENES, the researchers were able to calculate the planets’ mass, which is directly related to the amplitude by which each planet tugs on its star. They found the inner planet is about twice as massive as the Earth, while the outer planet is about three Earth masses. From their size and mass, the team estimated each planet’s density. The inner, smaller planet is slightly denser than the Earth, while the outer, larger planet is a bit less dense. Both planets, based on their density, are likely terrestrial, or rocky in composition.

The researchers also estimate, based on their short orbits, that the surface of the inner planet is a roasting 710 kelvins (818 degrees Fahrenheit), while the outer planet is around 560 K (548 F).

“We consider that range outside the habitable zone, too hot for liquid water to exist on the surface,” Kunimoto says.

“But there might be more planets in the system,” Shporer adds. “There are many multiplanet systems hosting five or six planets, especially around small stars like this one. Hopefully we will find more, and one might be in the habitable zone. That’s optimistic thinking.”

This research was supported, in part, by NASA, the Max-Planck-Gesellschaft, the Consejo Superior de Investigaciones Científicas, the Ministerio de Economía y Competitividad, and the European Regional Development Fund.

Click to comment

Leave a Reply

Your email address will not be published. Required fields are marked *

Edu News

NMIMS SBM Offers MBA (Part-Time) Program for Working Executives

The program focuses on providing a holistic education to enhance their employability

EP Staff

Published

on

Start your professional learning journey now with the best-in-class MBA (Part-Time) program with the most sought-after prestigious NMIMS, School of Business Management, featured in the top 100 global B-schools as per Financial Times MiM 2022 ranking. A highly respected business school in India with a legacy of 41 years and a prestigious faculty announces admissions open for their MBA (Part-Time) program at their Mumbai campus.

This program offers an opportunity for working executives to acquire a high-end compact management qualification through rigorous and qualitative in-class learning and practical exposure to industry expertise. The program focuses on providing a holistic education to enhance their employability, exposing working executives to contemporary trends and practices in management. It also provides excellent academic resources coupled with industry best practices to boost the managerial competence of executives.

NMIMS SBM MBA (Part-Time) is accredited by Advance Collegiate Schools of Business (AACSB) for working executives who want to enhance their skills and advance their careers. NMIMS has world-class pedagogy to provide students with a comprehensive and engaging learning experience. NMIMS SBM has a team of experts with extensive experience in the business world. The program structure is upto 40% hybrid and 60% in the classroom, whereas Bloomberg Certification Program will help students use financial analysis tools more efficiently. 

“The program is specifically meant for executives who have spent quality time in the industry and have adequate exposure to managerial roles and responsibilities. The two-year MBA (Part-Time) program will offer an opportunity for participants to hone their managerial skills and enable them to contribute better to their decision-making. It has been designed to empower students with a well-planned schedule that allows for a balance between study and work,” said Dr. Prashant Mishra, Dean School of Business Management.

Dr. Pradeep Pai, Program Chairperson, MBA (Part-Time), School of Business Management, said, “NMIMS SBM is proud to offer this innovative program to working professionals who wish to take the next step in their careers. We believe that this program will be a preferred executive education program for working professionals seeking to upgrade their qualifications by acquiring a widely acclaimed MBA degree.”

The MBA (Part-Time) program goes beyond traditional education by providing learners value-added workshops and industry connections. Our curriculum is regularly updated to ensure students receive the most current knowledge. The program helps them gain a practical and theoretical understanding of the industry and creates a network of professionals for them as they progress.

Eligibility Criteria:

  • 50% in Graduation from a recognized University in any discipline. (Distance/Part time/Full time)
  • Minimum 3 years of work experience in an executive or supervisory capacity or self-employed after graduation & up to the date of written test/personal interview.
  • The work experience should be full-time experience and should NOT include internships, projects, training periods, trainee (management, engineering), etc.

Selection Process:

Written Test conducted for MBA (Part-Time) by NMIMS OR Candidates with GMAT score of 600 and above (GMAT score of last 5 years up to the closure of registrations will be considered) OR Candidates with a score of 200 and above in NMAT by GMAC examinations for 2020 admission AND Personal Interview

Continue Reading

Edu News

eSecForte visited Northeast to strengthen Industry-Academia Interface for Achieving Effective Cybersecurity Prospects  

The team also visited the Indian Institute of Information Technology (IIIT), Manipur and interacted with students on the topic of Digital Forensics Challenges and career options

EP Staff

Published

on

In an effort to create a holistic ecosystem for cybersecurity in the country, the team from eSecForte led by Lt Col (Dr.) Santosh Khadsare  (Retd), VP Digital Forensics  & Incident Response  visited the National Institute of Electronics and Information Technology (NEILT), Kohima and held discussions with the director of the institute, L. Lanuwabang. The deliberations were focused on enlarging the gambit of cybersecurity especially digital forensics in the country and how eSecForte and NEILT can come together to contribute effectively in this regard. 

The team also visited the Indian Institute of Information Technology (IIIT), Manipur and interacted with students on the topic of Digital Forensics Challenges and career options. The discussion entailed how the use of digital forensics can prove instrumental in bringing the perpetrators of cybercrimes to the book. The various challenges related to the implementation of tools and methodologies of digital forensics were also part of the very constructive dialogue that was held between our team and enthusiastic students. 

The team lead had a very fruitful discussion with Dr Krishnan Bhaskar, Director, IIIT, Imphal and discussed how the Industry-Academia interface can do wonders in the field of cybersecurity and digital forensics. Specifically, detailed deliberations were held on devising exchange mechanisms and collaborative opportunities so that industry and academics can come together and lead to the creation of a self-sustainable ecosystem in the field of cybersecurity. Such development will ensure that cases related to the cybercrimes are dealt swiftly and lead to desired outcomes in terms of ensuring justice and well-being for all participating stakeholders. 

In the next leg of the reaching out journey, eSecForte’s team paid a visit to the National Forensic Science University (NFSU), Imphal campus and exchanged ideas with the campus coordinator on the latest trends and developments in the field of digital forensics. Apprising the importance of digital forensics to investigating officers, Lt Col (Dr.) Santosh Khadsare  (Retd), VP DFIR interacted with more than 400 trainees of the North Eastern Police Academy (NEPA), Shillong. These aspirants were thoroughly apprised of the importance of digital forensics and its utility in cracking cases related to cyberfrauds, cyberbullying, and other allied crimes associated with cyberspace. Case studies were discussed on how to handle digital evidence at the crime scenes with utmost care so that trace evidence won’t get lost in the logistical procedures and processes. The team showcased flagship products of eSecForte, Digital Forensic workstations and Faraday bags and informed them of the utility of these offerings built under India’s ambitious MAKE IN INDIA (MII) project. 

Continue Reading

Edu News

Roots Collegium signs World Chess Champion Koneru Humpy as Brand Ambassador

Chairman, Sri. B.P.Padala announces Koneru Humpy as the Brand Ambassador of Roots Collegium educational institutions

EP Staff

Published

on

  • Humpy will be the face of its upcoming brand-related undertakings

Celebrating its 30 years’ legacy in imparting holistic education, Roots Collegium, a well-known educational institution in Hyderabad has today announced World Chess Champion Koneru Humpy as its Brand Ambassador. The appointment of Ms. Koneru Humpy is set to boost the brand image of Roots Collegium amplifying the institution’s philosophy in making its students achieve global exposure.

With the signing up of world chess champion Koneru Humpy as its Brand Ambassador, Roots Collegium will be exploring untapped areas of new-age innovations and add them to its list of achievements in the last 30 years. The fast expanding Roots Collegium, started in 1991, offers intermediate courses and almost all the streams of Bachelor’s degrees. Roots collegium is providing a wide range of courses like BBA, BBA (Business Analytics, B.Com (General, computers, sales), BA (Mass Communication, Psychology, and modern languages), and B.Sc. (Data Analysis). The college provides a variety of courses in design, film and media, visual arts, hotel management, culinary arts, and also many other certificate courses.

Reacting to her appointment, Koneru Humpy said “It is my pleasure to be the brand ambassador of Roots Collegium. I thank Sri. BP Padala gaaru for the honour. Roots Collegium as an institution has been offering the best educational facilities for its students for the last 30 years. Roots and I share a similar journey as we both have started our journey’s 30 years back. We both have same passion, integrity and ethics. That’s the special part about Roots Collegium, to which I instantly related to. And now we are ready to travel together.  As an ambassador, I look forward to contributing my committed services to the college and helping them grow in stature. I will take part in each and every event of the college and would like to share my thoughts and way-forward ideas in all its initiatives. Once again I want to thank all the staff and management for choosing me as a brand ambassador.”

Koneru Humpy is the FIDE Women’s rapid chess champion of 2019. She became the youngest woman to achieve the title of a Grandmaster back in 2002 at the age of 15. Her association will be an added feather to the cap of Roots Collegium’s growing achievements and a historic moment in its journey. 

The Chairman of Roots Collegium, Sri. B P Padala said “It’s our honour to have such a young and dynamic chess champion, Koneru Humpy as our brand ambassador. I wish the students of Roots Collegium will be motivated by such an inspiring champion who has come across a lot to be in this position today. I have no doubt that with her determination and strong belief, she become a world champion. I hope every student will inculcate the habit of not giving up and fighting for what they want, from her. She will be a role model for each and every student of our institution. I thank Koneru Humpy for accepting this position and people like her will definitely help bring change in society.”

The students of Roots Collegium from different places in Hyderabad city are excited and look forward to listen to the life-changing stories from Koneru Humpy in the future. 

Continue Reading

Trending